modularize repo, use pnpm, improve typechecking

author: Florian Dold <florian.dold@gmail.com> 2020-08-03 13:00:48 +0530
committer: Florian Dold <florian.dold@gmail.com> 2020-08-03 13:01:05 +0530
commit: ffd2a62c3f7df94365980302fef3bc3376b48182 (patch)
tree: 270af6f16b4cc7f5da2afdba55c8bc9dbea5eca5 /src/crypto
parent: aa481e42675fb7c4dcbbeec0ba1c61e1953b9596 (diff)
11 files changed, 0 insertions, 4482 deletions
diff --git a/src/crypto/primitives/kdf.ts b/src/crypto/primitives/kdf.ts
deleted file mode 100644
index edc681bc1..000000000
--- a/src/crypto/primitives/kdf.ts
+++ /dev/null
@@ -1,92 +0,0 @@
-/*
- This file is part of GNU Taler
- (C) 2019 GNUnet e.V.
-
- GNU Taler is free software; you can redistribute it and/or modify it under the
- terms of the GNU General Public License as published by the Free Software
- Foundation; either version 3, or (at your option) any later version.
-
- GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
- WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
- A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License along with
- GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
- */
-
-import * as nacl from "./nacl-fast";
-import { sha256 } from "./sha256";
-
-export function sha512(data: Uint8Array): Uint8Array {
-  return nacl.hash(data);
-}
-
-export function hmac(
-  digest: (d: Uint8Array) => Uint8Array,
-  blockSize: number,
-  key: Uint8Array,
-  message: Uint8Array,
-): Uint8Array {
-  if (key.byteLength > blockSize) {
-    key = digest(key);
-  }
-  if (key.byteLength < blockSize) {
-    const k = key;
-    key = new Uint8Array(blockSize);
-    key.set(k, 0);
-  }
-  const okp = new Uint8Array(blockSize);
-  const ikp = new Uint8Array(blockSize);
-  for (let i = 0; i < blockSize; i++) {
-    ikp[i] = key[i] ^ 0x36;
-    okp[i] = key[i] ^ 0x5c;
-  }
-  const b1 = new Uint8Array(blockSize + message.byteLength);
-  b1.set(ikp, 0);
-  b1.set(message, blockSize);
-  const h0 = digest(b1);
-  const b2 = new Uint8Array(blockSize + h0.length);
-  b2.set(okp, 0);
-  b2.set(h0, blockSize);
-  return digest(b2);
-}
-
-export function hmacSha512(key: Uint8Array, message: Uint8Array): Uint8Array {
-  return hmac(sha512, 128, key, message);
-}
-
-export function hmacSha256(key: Uint8Array, message: Uint8Array): Uint8Array {
-  return hmac(sha256, 64, key, message);
-}
-
-export function kdf(
-  outputLength: number,
-  ikm: Uint8Array,
-  salt: Uint8Array,
-  info: Uint8Array,
-): Uint8Array {
-  // extract
-  const prk = hmacSha512(salt, ikm);
-
-  // expand
-  const N = Math.ceil(outputLength / 32);
-  const output = new Uint8Array(N * 32);
-  for (let i = 0; i < N; i++) {
-    let buf;
-    if (i == 0) {
-      buf = new Uint8Array(info.byteLength + 1);
-      buf.set(info, 0);
-    } else {
-      buf = new Uint8Array(info.byteLength + 1 + 32);
-      for (let j = 0; j < 32; j++) {
-        buf[j] = output[(i - 1) * 32 + j];
-      }
-      buf.set(info, 32);
-    }
-    buf[buf.length - 1] = i + 1;
-    const chunk = hmacSha256(prk, buf);
-    output.set(chunk, i * 32);
-  }
-
-  return output.slice(0, outputLength);
-}
diff --git a/src/crypto/primitives/nacl-fast.ts b/src/crypto/primitives/nacl-fast.ts
deleted file mode 100644
index 8d4aaeb63..000000000
--- a/src/crypto/primitives/nacl-fast.ts
+++ /dev/null
@@ -1,1941 +0,0 @@
-// Ported in 2014 by Dmitry Chestnykh and Devi Mandiri.
-// TypeScript port in 2019 by Florian Dold.
-// Public domain.
-//
-// Implementation derived from TweetNaCl version 20140427.
-// See for details: http://tweetnacl.cr.yp.to/
-
-const gf = function (init: number[] = []): Float64Array {
-  const r = new Float64Array(16);
-  if (init) for (let i = 0; i < init.length; i++) r[i] = init[i];
-  return r;
-};
-
-//  Pluggable, initialized in high-level API below.
-let randombytes = function (x: Uint8Array, n: number): void {
-  throw new Error("no PRNG");
-};
-
-const _9 = new Uint8Array(32);
-_9[0] = 9;
-
-// prettier-ignore
-const gf0 = gf();
-const gf1 = gf([1]);
-const _121665 = gf([0xdb41, 1]);
-const D = gf([
-  0x78a3,
-  0x1359,
-  0x4dca,
-  0x75eb,
-  0xd8ab,
-  0x4141,
-  0x0a4d,
-  0x0070,
-  0xe898,
-  0x7779,
-  0x4079,
-  0x8cc7,
-  0xfe73,
-  0x2b6f,
-  0x6cee,
-  0x5203,
-]);
-const D2 = gf([
-  0xf159,
-  0x26b2,
-  0x9b94,
-  0xebd6,
-  0xb156,
-  0x8283,
-  0x149a,
-  0x00e0,
-  0xd130,
-  0xeef3,
-  0x80f2,
-  0x198e,
-  0xfce7,
-  0x56df,
-  0xd9dc,
-  0x2406,
-]);
-const X = gf([
-  0xd51a,
-  0x8f25,
-  0x2d60,
-  0xc956,
-  0xa7b2,
-  0x9525,
-  0xc760,
-  0x692c,
-  0xdc5c,
-  0xfdd6,
-  0xe231,
-  0xc0a4,
-  0x53fe,
-  0xcd6e,
-  0x36d3,
-  0x2169,
-]);
-const Y = gf([
-  0x6658,
-  0x6666,
-  0x6666,
-  0x6666,
-  0x6666,
-  0x6666,
-  0x6666,
-  0x6666,
-  0x6666,
-  0x6666,
-  0x6666,
-  0x6666,
-  0x6666,
-  0x6666,
-  0x6666,
-  0x6666,
-]);
-const I = gf([
-  0xa0b0,
-  0x4a0e,
-  0x1b27,
-  0xc4ee,
-  0xe478,
-  0xad2f,
-  0x1806,
-  0x2f43,
-  0xd7a7,
-  0x3dfb,
-  0x0099,
-  0x2b4d,
-  0xdf0b,
-  0x4fc1,
-  0x2480,
-  0x2b83,
-]);
-
-function ts64(x: Uint8Array, i: number, h: number, l: number): void {
-  x[i] = (h >> 24) & 0xff;
-  x[i + 1] = (h >> 16) & 0xff;
-  x[i + 2] = (h >> 8) & 0xff;
-  x[i + 3] = h & 0xff;
-  x[i + 4] = (l >> 24) & 0xff;
-  x[i + 5] = (l >> 16) & 0xff;
-  x[i + 6] = (l >> 8) & 0xff;
-  x[i + 7] = l & 0xff;
-}
-
-function vn(
-  x: Uint8Array,
-  xi: number,
-  y: Uint8Array,
-  yi: number,
-  n: number,
-): number {
-  let i,
-    d = 0;
-  for (i = 0; i < n; i++) d |= x[xi + i] ^ y[yi + i];
-  return (1 & ((d - 1) >>> 8)) - 1;
-}
-
-function crypto_verify_32(
-  x: Uint8Array,
-  xi: number,
-  y: Uint8Array,
-  yi: number,
-): number {
-  return vn(x, xi, y, yi, 32);
-}
-
-function set25519(r: Float64Array, a: Float64Array): void {
-  let i;
-  for (i = 0; i < 16; i++) r[i] = a[i] | 0;
-}
-
-function car25519(o: Float64Array): void {
-  let i,
-    v,
-    c = 1;
-  for (i = 0; i < 16; i++) {
-    v = o[i] + c + 65535;
-    c = Math.floor(v / 65536);
-    o[i] = v - c * 65536;
-  }
-  o[0] += c - 1 + 37 * (c - 1);
-}
-
-function sel25519(p: Float64Array, q: Float64Array, b: number): void {
-  let t;
-  const c = ~(b - 1);
-  for (let i = 0; i < 16; i++) {
-    t = c & (p[i] ^ q[i]);
-    p[i] ^= t;
-    q[i] ^= t;
-  }
-}
-
-function pack25519(o: Uint8Array, n: Float64Array): void {
-  let i, j, b;
-  const m = gf(),
-    t = gf();
-  for (i = 0; i < 16; i++) t[i] = n[i];
-  car25519(t);
-  car25519(t);
-  car25519(t);
-  for (j = 0; j < 2; j++) {
-    m[0] = t[0] - 0xffed;
-    for (i = 1; i < 15; i++) {
-      m[i] = t[i] - 0xffff - ((m[i - 1] >> 16) & 1);
-      m[i - 1] &= 0xffff;
-    }
-    m[15] = t[15] - 0x7fff - ((m[14] >> 16) & 1);
-    b = (m[15] >> 16) & 1;
-    m[14] &= 0xffff;
-    sel25519(t, m, 1 - b);
-  }
-  for (i = 0; i < 16; i++) {
-    o[2 * i] = t[i] & 0xff;
-    o[2 * i + 1] = t[i] >> 8;
-  }
-}
-
-function neq25519(a: Float64Array, b: Float64Array): number {
-  const c = new Uint8Array(32),
-    d = new Uint8Array(32);
-  pack25519(c, a);
-  pack25519(d, b);
-  return crypto_verify_32(c, 0, d, 0);
-}
-
-function par25519(a: Float64Array): number {
-  const d = new Uint8Array(32);
-  pack25519(d, a);
-  return d[0] & 1;
-}
-
-function unpack25519(o: Float64Array, n: Uint8Array): void {
-  let i;
-  for (i = 0; i < 16; i++) o[i] = n[2 * i] + (n[2 * i + 1] << 8);
-  o[15] &= 0x7fff;
-}
-
-function A(o: Float64Array, a: Float64Array, b: Float64Array): void {
-  for (let i = 0; i < 16; i++) o[i] = a[i] + b[i];
-}
-
-function Z(o: Float64Array, a: Float64Array, b: Float64Array): void {
-  for (let i = 0; i < 16; i++) o[i] = a[i] - b[i];
-}
-
-function M(o: Float64Array, a: Float64Array, b: Float64Array): void {
-  let v,
-    c,
-    t0 = 0,
-    t1 = 0,
-    t2 = 0,
-    t3 = 0,
-    t4 = 0,
-    t5 = 0,
-    t6 = 0,
-    t7 = 0,
-    t8 = 0,
-    t9 = 0,
-    t10 = 0,
-    t11 = 0,
-    t12 = 0,
-    t13 = 0,
-    t14 = 0,
-    t15 = 0,
-    t16 = 0,
-    t17 = 0,
-    t18 = 0,
-    t19 = 0,
-    t20 = 0,
-    t21 = 0,
-    t22 = 0,
-    t23 = 0,
-    t24 = 0,
-    t25 = 0,
-    t26 = 0,
-    t27 = 0,
-    t28 = 0,
-    t29 = 0,
-    t30 = 0;
-  const b0 = b[0],
-    b1 = b[1],
-    b2 = b[2],
-    b3 = b[3],
-    b4 = b[4],
-    b5 = b[5],
-    b6 = b[6],
-    b7 = b[7],
-    b8 = b[8],
-    b9 = b[9],
-    b10 = b[10],
-    b11 = b[11],
-    b12 = b[12],
-    b13 = b[13],
-    b14 = b[14],
-    b15 = b[15];
-
-  v = a[0];
-  t0 += v * b0;
-  t1 += v * b1;
-  t2 += v * b2;
-  t3 += v * b3;
-  t4 += v * b4;
-  t5 += v * b5;
-  t6 += v * b6;
-  t7 += v * b7;
-  t8 += v * b8;
-  t9 += v * b9;
-  t10 += v * b10;
-  t11 += v * b11;
-  t12 += v * b12;
-  t13 += v * b13;
-  t14 += v * b14;
-  t15 += v * b15;
-  v = a[1];
-  t1 += v * b0;
-  t2 += v * b1;
-  t3 += v * b2;
-  t4 += v * b3;
-  t5 += v * b4;
-  t6 += v * b5;
-  t7 += v * b6;
-  t8 += v * b7;
-  t9 += v * b8;
-  t10 += v * b9;
-  t11 += v * b10;
-  t12 += v * b11;
-  t13 += v * b12;
-  t14 += v * b13;
-  t15 += v * b14;
-  t16 += v * b15;
-  v = a[2];
-  t2 += v * b0;
-  t3 += v * b1;
-  t4 += v * b2;
-  t5 += v * b3;
-  t6 += v * b4;
-  t7 += v * b5;
-  t8 += v * b6;
-  t9 += v * b7;
-  t10 += v * b8;
-  t11 += v * b9;
-  t12 += v * b10;
-  t13 += v * b11;
-  t14 += v * b12;
-  t15 += v * b13;
-  t16 += v * b14;
-  t17 += v * b15;
-  v = a[3];
-  t3 += v * b0;
-  t4 += v * b1;
-  t5 += v * b2;
-  t6 += v * b3;
-  t7 += v * b4;
-  t8 += v * b5;
-  t9 += v * b6;
-  t10 += v * b7;
-  t11 += v * b8;
-  t12 += v * b9;
-  t13 += v * b10;
-  t14 += v * b11;
-  t15 += v * b12;
-  t16 += v * b13;
-  t17 += v * b14;
-  t18 += v * b15;
-  v = a[4];
-  t4 += v * b0;
-  t5 += v * b1;
-  t6 += v * b2;
-  t7 += v * b3;
-  t8 += v * b4;
-  t9 += v * b5;
-  t10 += v * b6;
-  t11 += v * b7;
-  t12 += v * b8;
-  t13 += v * b9;
-  t14 += v * b10;
-  t15 += v * b11;
-  t16 += v * b12;
-  t17 += v * b13;
-  t18 += v * b14;
-  t19 += v * b15;
-  v = a[5];
-  t5 += v * b0;
-  t6 += v * b1;
-  t7 += v * b2;
-  t8 += v * b3;
-  t9 += v * b4;
-  t10 += v * b5;
-  t11 += v * b6;
-  t12 += v * b7;
-  t13 += v * b8;
-  t14 += v * b9;
-  t15 += v * b10;
-  t16 += v * b11;
-  t17 += v * b12;
-  t18 += v * b13;
-  t19 += v * b14;
-  t20 += v * b15;
-  v = a[6];
-  t6 += v * b0;
-  t7 += v * b1;
-  t8 += v * b2;
-  t9 += v * b3;
-  t10 += v * b4;
-  t11 += v * b5;
-  t12 += v * b6;
-  t13 += v * b7;
-  t14 += v * b8;
-  t15 += v * b9;
-  t16 += v * b10;
-  t17 += v * b11;
-  t18 += v * b12;
-  t19 += v * b13;
-  t20 += v * b14;
-  t21 += v * b15;
-  v = a[7];
-  t7 += v * b0;
-  t8 += v * b1;
-  t9 += v * b2;
-  t10 += v * b3;
-  t11 += v * b4;
-  t12 += v * b5;
-  t13 += v * b6;
-  t14 += v * b7;
-  t15 += v * b8;
-  t16 += v * b9;
-  t17 += v * b10;
-  t18 += v * b11;
-  t19 += v * b12;
-  t20 += v * b13;
-  t21 += v * b14;
-  t22 += v * b15;
-  v = a[8];
-  t8 += v * b0;
-  t9 += v * b1;
-  t10 += v * b2;
-  t11 += v * b3;
-  t12 += v * b4;
-  t13 += v * b5;
-  t14 += v * b6;
-  t15 += v * b7;
-  t16 += v * b8;
-  t17 += v * b9;
-  t18 += v * b10;
-  t19 += v * b11;
-  t20 += v * b12;
-  t21 += v * b13;
-  t22 += v * b14;
-  t23 += v * b15;
-  v = a[9];
-  t9 += v * b0;
-  t10 += v * b1;
-  t11 += v * b2;
-  t12 += v * b3;
-  t13 += v * b4;
-  t14 += v * b5;
-  t15 += v * b6;
-  t16 += v * b7;
-  t17 += v * b8;
-  t18 += v * b9;
-  t19 += v * b10;
-  t20 += v * b11;
-  t21 += v * b12;
-  t22 += v * b13;
-  t23 += v * b14;
-  t24 += v * b15;
-  v = a[10];
-  t10 += v * b0;
-  t11 += v * b1;
-  t12 += v * b2;
-  t13 += v * b3;
-  t14 += v * b4;
-  t15 += v * b5;
-  t16 += v * b6;
-  t17 += v * b7;
-  t18 += v * b8;
-  t19 += v * b9;
-  t20 += v * b10;
-  t21 += v * b11;
-  t22 += v * b12;
-  t23 += v * b13;
-  t24 += v * b14;
-  t25 += v * b15;
-  v = a[11];
-  t11 += v * b0;
-  t12 += v * b1;
-  t13 += v * b2;
-  t14 += v * b3;
-  t15 += v * b4;
-  t16 += v * b5;
-  t17 += v * b6;
-  t18 += v * b7;
-  t19 += v * b8;
-  t20 += v * b9;
-  t21 += v * b10;
-  t22 += v * b11;
-  t23 += v * b12;
-  t24 += v * b13;
-  t25 += v * b14;
-  t26 += v * b15;
-  v = a[12];
-  t12 += v * b0;
-  t13 += v * b1;
-  t14 += v * b2;
-  t15 += v * b3;
-  t16 += v * b4;
-  t17 += v * b5;
-  t18 += v * b6;
-  t19 += v * b7;
-  t20 += v * b8;
-  t21 += v * b9;
-  t22 += v * b10;
-  t23 += v * b11;
-  t24 += v * b12;
-  t25 += v * b13;
-  t26 += v * b14;
-  t27 += v * b15;
-  v = a[13];
-  t13 += v * b0;
-  t14 += v * b1;
-  t15 += v * b2;
-  t16 += v * b3;
-  t17 += v * b4;
-  t18 += v * b5;
-  t19 += v * b6;
-  t20 += v * b7;
-  t21 += v * b8;
-  t22 += v * b9;
-  t23 += v * b10;
-  t24 += v * b11;
-  t25 += v * b12;
-  t26 += v * b13;
-  t27 += v * b14;
-  t28 += v * b15;
-  v = a[14];
-  t14 += v * b0;
-  t15 += v * b1;
-  t16 += v * b2;
-  t17 += v * b3;
-  t18 += v * b4;
-  t19 += v * b5;
-  t20 += v * b6;
-  t21 += v * b7;
-  t22 += v * b8;
-  t23 += v * b9;
-  t24 += v * b10;
-  t25 += v * b11;
-  t26 += v * b12;
-  t27 += v * b13;
-  t28 += v * b14;
-  t29 += v * b15;
-  v = a[15];
-  t15 += v * b0;
-  t16 += v * b1;
-  t17 += v * b2;
-  t18 += v * b3;
-  t19 += v * b4;
-  t20 += v * b5;
-  t21 += v * b6;
-  t22 += v * b7;
-  t23 += v * b8;
-  t24 += v * b9;
-  t25 += v * b10;
-  t26 += v * b11;
-  t27 += v * b12;
-  t28 += v * b13;
-  t29 += v * b14;
-  t30 += v * b15;
-
-  t0 += 38 * t16;
-  t1 += 38 * t17;
-  t2 += 38 * t18;
-  t3 += 38 * t19;
-  t4 += 38 * t20;
-  t5 += 38 * t21;
-  t6 += 38 * t22;
-  t7 += 38 * t23;
-  t8 += 38 * t24;
-  t9 += 38 * t25;
-  t10 += 38 * t26;
-  t11 += 38 * t27;
-  t12 += 38 * t28;
-  t13 += 38 * t29;
-  t14 += 38 * t30;
-  // t15 left as is
-
-  // first car
-  c = 1;
-  v = t0 + c + 65535;
-  c = Math.floor(v / 65536);
-  t0 = v - c * 65536;
-  v = t1 + c + 65535;
-  c = Math.floor(v / 65536);
-  t1 = v - c * 65536;
-  v = t2 + c + 65535;
-  c = Math.floor(v / 65536);
-  t2 = v - c * 65536;
-  v = t3 + c + 65535;
-  c = Math.floor(v / 65536);
-  t3 = v - c * 65536;
-  v = t4 + c + 65535;
-  c = Math.floor(v / 65536);
-  t4 = v - c * 65536;
-  v = t5 + c + 65535;
-  c = Math.floor(v / 65536);
-  t5 = v - c * 65536;
-  v = t6 + c + 65535;
-  c = Math.floor(v / 65536);
-  t6 = v - c * 65536;
-  v = t7 + c + 65535;
-  c = Math.floor(v / 65536);
-  t7 = v - c * 65536;
-  v = t8 + c + 65535;
-  c = Math.floor(v / 65536);
-  t8 = v - c * 65536;
-  v = t9 + c + 65535;
-  c = Math.floor(v / 65536);
-  t9 = v - c * 65536;
-  v = t10 + c + 65535;
-  c = Math.floor(v / 65536);
-  t10 = v - c * 65536;
-  v = t11 + c + 65535;
-  c = Math.floor(v / 65536);
-  t11 = v - c * 65536;
-  v = t12 + c + 65535;
-  c = Math.floor(v / 65536);
-  t12 = v - c * 65536;
-  v = t13 + c + 65535;
-  c = Math.floor(v / 65536);
-  t13 = v - c * 65536;
-  v = t14 + c + 65535;
-  c = Math.floor(v / 65536);
-  t14 = v - c * 65536;
-  v = t15 + c + 65535;
-  c = Math.floor(v / 65536);
-  t15 = v - c * 65536;
-  t0 += c - 1 + 37 * (c - 1);
-
-  // second car
-  c = 1;
-  v = t0 + c + 65535;
-  c = Math.floor(v / 65536);
-  t0 = v - c * 65536;
-  v = t1 + c + 65535;
-  c = Math.floor(v / 65536);
-  t1 = v - c * 65536;
-  v = t2 + c + 65535;
-  c = Math.floor(v / 65536);
-  t2 = v - c * 65536;
-  v = t3 + c + 65535;
-  c = Math.floor(v / 65536);
-  t3 = v - c * 65536;
-  v = t4 + c + 65535;
-  c = Math.floor(v / 65536);
-  t4 = v - c * 65536;
-  v = t5 + c + 65535;
-  c = Math.floor(v / 65536);
-  t5 = v - c * 65536;
-  v = t6 + c + 65535;
-  c = Math.floor(v / 65536);
-  t6 = v - c * 65536;
-  v = t7 + c + 65535;
-  c = Math.floor(v / 65536);
-  t7 = v - c * 65536;
-  v = t8 + c + 65535;
-  c = Math.floor(v / 65536);
-  t8 = v - c * 65536;
-  v = t9 + c + 65535;
-  c = Math.floor(v / 65536);
-  t9 = v - c * 65536;
-  v = t10 + c + 65535;
-  c = Math.floor(v / 65536);
-  t10 = v - c * 65536;
-  v = t11 + c + 65535;
-  c = Math.floor(v / 65536);
-  t11 = v - c * 65536;
-  v = t12 + c + 65535;
-  c = Math.floor(v / 65536);
-  t12 = v - c * 65536;
-  v = t13 + c + 65535;
-  c = Math.floor(v / 65536);
-  t13 = v - c * 65536;
-  v = t14 + c + 65535;
-  c = Math.floor(v / 65536);
-  t14 = v - c * 65536;
-  v = t15 + c + 65535;
-  c = Math.floor(v / 65536);
-  t15 = v - c * 65536;
-  t0 += c - 1 + 37 * (c - 1);
-
-  o[0] = t0;
-  o[1] = t1;
-  o[2] = t2;
-  o[3] = t3;
-  o[4] = t4;
-  o[5] = t5;
-  o[6] = t6;
-  o[7] = t7;
-  o[8] = t8;
-  o[9] = t9;
-  o[10] = t10;
-  o[11] = t11;
-  o[12] = t12;
-  o[13] = t13;
-  o[14] = t14;
-  o[15] = t15;
-}
-
-function S(o: Float64Array, a: Float64Array): void {
-  M(o, a, a);
-}
-
-function inv25519(o: Float64Array, i: Float64Array): void {
-  const c = gf();
-  let a;
-  for (a = 0; a < 16; a++) c[a] = i[a];
-  for (a = 253; a >= 0; a--) {
-    S(c, c);
-    if (a !== 2 && a !== 4) M(c, c, i);
-  }
-  for (a = 0; a < 16; a++) o[a] = c[a];
-}
-
-function pow2523(o: Float64Array, i: Float64Array): void {
-  const c = gf();
-  let a;
-  for (a = 0; a < 16; a++) c[a] = i[a];
-  for (a = 250; a >= 0; a--) {
-    S(c, c);
-    if (a !== 1) M(c, c, i);
-  }
-  for (a = 0; a < 16; a++) o[a] = c[a];
-}
-
-function crypto_scalarmult(
-  q: Uint8Array,
-  n: Uint8Array,
-  p: Uint8Array,
-): number {
-  const z = new Uint8Array(32);
-  const x = new Float64Array(80);
-  let r;
-  let i;
-  const a = gf(),
-    b = gf(),
-    c = gf(),
-    d = gf(),
-    e = gf(),
-    f = gf();
-  for (i = 0; i < 31; i++) z[i] = n[i];
-  z[31] = (n[31] & 127) | 64;
-  z[0] &= 248;
-  unpack25519(x, p);
-  for (i = 0; i < 16; i++) {
-    b[i] = x[i];
-    d[i] = a[i] = c[i] = 0;
-  }
-  a[0] = d[0] = 1;
-  for (i = 254; i >= 0; --i) {
-    r = (z[i >>> 3] >>> (i & 7)) & 1;
-    sel25519(a, b, r);
-    sel25519(c, d, r);
-    A(e, a, c);
-    Z(a, a, c);
-    A(c, b, d);
-    Z(b, b, d);
-    S(d, e);
-    S(f, a);
-    M(a, c, a);
-    M(c, b, e);
-    A(e, a, c);
-    Z(a, a, c);
-    S(b, a);
-    Z(c, d, f);
-    M(a, c, _121665);
-    A(a, a, d);
-    M(c, c, a);
-    M(a, d, f);
-    M(d, b, x);
-    S(b, e);
-    sel25519(a, b, r);
-    sel25519(c, d, r);
-  }
-  for (i = 0; i < 16; i++) {
-    x[i + 16] = a[i];
-    x[i + 32] = c[i];
-    x[i + 48] = b[i];
-    x[i + 64] = d[i];
-  }
-  const x32 = x.subarray(32);
-  const x16 = x.subarray(16);
-  inv25519(x32, x32);
-  M(x16, x16, x32);
-  pack25519(q, x16);
-  return 0;
-}
-
-function crypto_scalarmult_base(q: Uint8Array, n: Uint8Array): number {
-  return crypto_scalarmult(q, n, _9);
-}
-
-// prettier-ignore
-const K = [
-  0x428a2f98, 0xd728ae22, 0x71374491, 0x23ef65cd,
-  0xb5c0fbcf, 0xec4d3b2f, 0xe9b5dba5, 0x8189dbbc,
-  0x3956c25b, 0xf348b538, 0x59f111f1, 0xb605d019,
-  0x923f82a4, 0xaf194f9b, 0xab1c5ed5, 0xda6d8118,
-  0xd807aa98, 0xa3030242, 0x12835b01, 0x45706fbe,
-  0x243185be, 0x4ee4b28c, 0x550c7dc3, 0xd5ffb4e2,
-  0x72be5d74, 0xf27b896f, 0x80deb1fe, 0x3b1696b1,
-  0x9bdc06a7, 0x25c71235, 0xc19bf174, 0xcf692694,
-  0xe49b69c1, 0x9ef14ad2, 0xefbe4786, 0x384f25e3,
-  0x0fc19dc6, 0x8b8cd5b5, 0x240ca1cc, 0x77ac9c65,
-  0x2de92c6f, 0x592b0275, 0x4a7484aa, 0x6ea6e483,
-  0x5cb0a9dc, 0xbd41fbd4, 0x76f988da, 0x831153b5,
-  0x983e5152, 0xee66dfab, 0xa831c66d, 0x2db43210,
-  0xb00327c8, 0x98fb213f, 0xbf597fc7, 0xbeef0ee4,
-  0xc6e00bf3, 0x3da88fc2, 0xd5a79147, 0x930aa725,
-  0x06ca6351, 0xe003826f, 0x14292967, 0x0a0e6e70,
-  0x27b70a85, 0x46d22ffc, 0x2e1b2138, 0x5c26c926,
-  0x4d2c6dfc, 0x5ac42aed, 0x53380d13, 0x9d95b3df,
-  0x650a7354, 0x8baf63de, 0x766a0abb, 0x3c77b2a8,
-  0x81c2c92e, 0x47edaee6, 0x92722c85, 0x1482353b,
-  0xa2bfe8a1, 0x4cf10364, 0xa81a664b, 0xbc423001,
-  0xc24b8b70, 0xd0f89791, 0xc76c51a3, 0x0654be30,
-  0xd192e819, 0xd6ef5218, 0xd6990624, 0x5565a910,
-  0xf40e3585, 0x5771202a, 0x106aa070, 0x32bbd1b8,
-  0x19a4c116, 0xb8d2d0c8, 0x1e376c08, 0x5141ab53,
-  0x2748774c, 0xdf8eeb99, 0x34b0bcb5, 0xe19b48a8,
-  0x391c0cb3, 0xc5c95a63, 0x4ed8aa4a, 0xe3418acb,
-  0x5b9cca4f, 0x7763e373, 0x682e6ff3, 0xd6b2b8a3,
-  0x748f82ee, 0x5defb2fc, 0x78a5636f, 0x43172f60,
-  0x84c87814, 0xa1f0ab72, 0x8cc70208, 0x1a6439ec,
-  0x90befffa, 0x23631e28, 0xa4506ceb, 0xde82bde9,
-  0xbef9a3f7, 0xb2c67915, 0xc67178f2, 0xe372532b,
-  0xca273ece, 0xea26619c, 0xd186b8c7, 0x21c0c207,
-  0xeada7dd6, 0xcde0eb1e, 0xf57d4f7f, 0xee6ed178,
-  0x06f067aa, 0x72176fba, 0x0a637dc5, 0xa2c898a6,
-  0x113f9804, 0xbef90dae, 0x1b710b35, 0x131c471b,
-  0x28db77f5, 0x23047d84, 0x32caab7b, 0x40c72493,
-  0x3c9ebe0a, 0x15c9bebc, 0x431d67c4, 0x9c100d4c,
-  0x4cc5d4be, 0xcb3e42b6, 0x597f299c, 0xfc657e2a,
-  0x5fcb6fab, 0x3ad6faec, 0x6c44198c, 0x4a475817
-];
-
-function crypto_hashblocks_hl(
-  hh: Int32Array,
-  hl: Int32Array,
-  m: Uint8Array,
-  n: number,
-): number {
-  const wh = new Int32Array(16),
-    wl = new Int32Array(16);
-  let bh0,
-    bh1,
-    bh2,
-    bh3,
-    bh4,
-    bh5,
-    bh6,
-    bh7,
-    bl0,
-    bl1,
-    bl2,
-    bl3,
-    bl4,
-    bl5,
-    bl6,
-    bl7,
-    th,
-    tl,
-    i,
-    j,
-    h,
-    l,
-    a,
-    b,
-    c,
-    d;
-
-  let ah0 = hh[0],
-    ah1 = hh[1],
-    ah2 = hh[2],
-    ah3 = hh[3],
-    ah4 = hh[4],
-    ah5 = hh[5],
-    ah6 = hh[6],
-    ah7 = hh[7],
-    al0 = hl[0],
-    al1 = hl[1],
-    al2 = hl[2],
-    al3 = hl[3],
-    al4 = hl[4],
-    al5 = hl[5],
-    al6 = hl[6],
-    al7 = hl[7];
-
-  let pos = 0;
-  while (n >= 128) {
-    for (i = 0; i < 16; i++) {
-      j = 8 * i + pos;
-      wh[i] = (m[j + 0] << 24) | (m[j + 1] << 16) | (m[j + 2] << 8) | m[j + 3];
-      wl[i] = (m[j + 4] << 24) | (m[j + 5] << 16) | (m[j + 6] << 8) | m[j + 7];
-    }
-    for (i = 0; i < 80; i++) {
-      bh0 = ah0;
-      bh1 = ah1;
-      bh2 = ah2;
-      bh3 = ah3;
-      bh4 = ah4;
-      bh5 = ah5;
-      bh6 = ah6;
-      bh7 = ah7;
-
-      bl0 = al0;
-      bl1 = al1;
-      bl2 = al2;
-      bl3 = al3;
-      bl4 = al4;
-      bl5 = al5;
-      bl6 = al6;
-      bl7 = al7;
-
-      // add
-      h = ah7;
-      l = al7;
-
-      a = l & 0xffff;
-      b = l >>> 16;
-      c = h & 0xffff;
-      d = h >>> 16;
-
-      // Sigma1
-      h =
-        ((ah4 >>> 14) | (al4 << (32 - 14))) ^
-        ((ah4 >>> 18) | (al4 << (32 - 18))) ^
-        ((al4 >>> (41 - 32)) | (ah4 << (32 - (41 - 32))));
-      l =
-        ((al4 >>> 14) | (ah4 << (32 - 14))) ^
-        ((al4 >>> 18) | (ah4 << (32 - 18))) ^
-        ((ah4 >>> (41 - 32)) | (al4 << (32 - (41 - 32))));
-
-      a += l & 0xffff;
-      b += l >>> 16;
-      c += h & 0xffff;
-      d += h >>> 16;
-
-      // Ch
-      h = (ah4 & ah5) ^ (~ah4 & ah6);
-      l = (al4 & al5) ^ (~al4 & al6);
-
-      a += l & 0xffff;
-      b += l >>> 16;
-      c += h & 0xffff;
-      d += h >>> 16;
-
-      // K
-      h = K[i * 2];
-      l = K[i * 2 + 1];
-
-      a += l & 0xffff;
-      b += l >>> 16;
-      c += h & 0xffff;
-      d += h >>> 16;
-
-      // w
-      h = wh[i % 16];
-      l = wl[i % 16];
-
-      a += l & 0xffff;
-      b += l >>> 16;
-      c += h & 0xffff;
-      d += h >>> 16;
-
-      b += a >>> 16;
-      c += b >>> 16;
-      d += c >>> 16;
-
-      th = (c & 0xffff) | (d << 16);
-      tl = (a & 0xffff) | (b << 16);
-
-      // add
-      h = th;
-      l = tl;
-
-      a = l & 0xffff;
-      b = l >>> 16;
-      c = h & 0xffff;
-      d = h >>> 16;
-
-      // Sigma0
-      h =
-        ((ah0 >>> 28) | (al0 << (32 - 28))) ^
-        ((al0 >>> (34 - 32)) | (ah0 << (32 - (34 - 32)))) ^
-        ((al0 >>> (39 - 32)) | (ah0 << (32 - (39 - 32))));
-      l =
-        ((al0 >>> 28) | (ah0 << (32 - 28))) ^
-        ((ah0 >>> (34 - 32)) | (al0 << (32 - (34 - 32)))) ^
-        ((ah0 >>> (39 - 32)) | (al0 << (32 - (39 - 32))));
-
-      a += l & 0xffff;
-      b += l >>> 16;
-      c += h & 0xffff;
-      d += h >>> 16;
-
-      // Maj
-      h = (ah0 & ah1) ^ (ah0 & ah2) ^ (ah1 & ah2);
-      l = (al0 & al1) ^ (al0 & al2) ^ (al1 & al2);
-
-      a += l & 0xffff;
-      b += l >>> 16;
-      c += h & 0xffff;
-      d += h >>> 16;
-
-      b += a >>> 16;
-      c += b >>> 16;
-      d += c >>> 16;
-
-      bh7 = (c & 0xffff) | (d << 16);
-      bl7 = (a & 0xffff) | (b << 16);
-
-      // add
-      h = bh3;
-      l = bl3;
-
-      a = l & 0xffff;
-      b = l >>> 16;
-      c = h & 0xffff;
-      d = h >>> 16;
-
-      h = th;
-      l = tl;
-
-      a += l & 0xffff;
-      b += l >>> 16;
-      c += h & 0xffff;
-      d += h >>> 16;
-
-      b += a >>> 16;
-      c += b >>> 16;
-      d += c >>> 16;
-
-      bh3 = (c & 0xffff) | (d << 16);
-      bl3 = (a & 0xffff) | (b << 16);
-
-      ah1 = bh0;
-      ah2 = bh1;
-      ah3 = bh2;
-      ah4 = bh3;
-      ah5 = bh4;
-      ah6 = bh5;
-      ah7 = bh6;
-      ah0 = bh7;
-
-      al1 = bl0;
-      al2 = bl1;
-      al3 = bl2;
-      al4 = bl3;
-      al5 = bl4;
-      al6 = bl5;
-      al7 = bl6;
-      al0 = bl7;
-
-      if (i % 16 === 15) {
-        for (j = 0; j < 16; j++) {
-          // add
-          h = wh[j];
-          l = wl[j];
-
-          a = l & 0xffff;
-          b = l >>> 16;
-          c = h & 0xffff;
-          d = h >>> 16;
-
-          h = wh[(j + 9) % 16];
-          l = wl[(j + 9) % 16];
-
-          a += l & 0xffff;
-          b += l >>> 16;
-          c += h & 0xffff;
-          d += h >>> 16;
-
-          // sigma0
-          th = wh[(j + 1) % 16];
-          tl = wl[(j + 1) % 16];
-          h =
-            ((th >>> 1) | (tl << (32 - 1))) ^
-            ((th >>> 8) | (tl << (32 - 8))) ^
-            (th >>> 7);
-          l =
-            ((tl >>> 1) | (th << (32 - 1))) ^
-            ((tl >>> 8) | (th << (32 - 8))) ^
-            ((tl >>> 7) | (th << (32 - 7)));
-
-          a += l & 0xffff;
-          b += l >>> 16;
-          c += h & 0xffff;
-          d += h >>> 16;
-
-          // sigma1
-          th = wh[(j + 14) % 16];
-          tl = wl[(j + 14) % 16];
-          h =
-            ((th >>> 19) | (tl << (32 - 19))) ^
-            ((tl >>> (61 - 32)) | (th << (32 - (61 - 32)))) ^
-            (th >>> 6);
-          l =
-            ((tl >>> 19) | (th << (32 - 19))) ^
-            ((th >>> (61 - 32)) | (tl << (32 - (61 - 32)))) ^
-            ((tl >>> 6) | (th << (32 - 6)));
-
-          a += l & 0xffff;
-          b += l >>> 16;
-          c += h & 0xffff;
-          d += h >>> 16;
-
-          b += a >>> 16;
-          c += b >>> 16;
-          d += c >>> 16;
-
-          wh[j] = (c & 0xffff) | (d << 16);
-          wl[j] = (a & 0xffff) | (b << 16);
-        }
-      }
-    }
-
-    // add
-    h = ah0;
-    l = al0;
-
-    a = l & 0xffff;
-    b = l >>> 16;
-    c = h & 0xffff;
-    d = h >>> 16;
-
-    h = hh[0];
-    l = hl[0];
-
-    a += l & 0xffff;
-    b += l >>> 16;
-    c += h & 0xffff;
-    d += h >>> 16;
-
-    b += a >>> 16;
-    c += b >>> 16;
-    d += c >>> 16;
-
-    hh[0] = ah0 = (c & 0xffff) | (d << 16);
-    hl[0] = al0 = (a & 0xffff) | (b << 16);
-
-    h = ah1;
-    l = al1;
-
-    a = l & 0xffff;
-    b = l >>> 16;
-    c = h & 0xffff;
-    d = h >>> 16;
-
-    h = hh[1];
-    l = hl[1];
-
-    a += l & 0xffff;
-    b += l >>> 16;
-    c += h & 0xffff;
-    d += h >>> 16;
-
-    b += a >>> 16;
-    c += b >>> 16;
-    d += c >>> 16;
-
-    hh[1] = ah1 = (c & 0xffff) | (d << 16);
-    hl[1] = al1 = (a & 0xffff) | (b << 16);
-
-    h = ah2;
-    l = al2;
-
-    a = l & 0xffff;
-    b = l >>> 16;
-    c = h & 0xffff;
-    d = h >>> 16;
-
-    h = hh[2];
-    l = hl[2];
-
-    a += l & 0xffff;
-    b += l >>> 16;
-    c += h & 0xffff;
-    d += h >>> 16;
-
-    b += a >>> 16;
-    c += b >>> 16;
-    d += c >>> 16;
-
-    hh[2] = ah2 = (c & 0xffff) | (d << 16);
-    hl[2] = al2 = (a & 0xffff) | (b << 16);
-
-    h = ah3;
-    l = al3;
-
-    a = l & 0xffff;
-    b = l >>> 16;
-    c = h & 0xffff;
-    d = h >>> 16;
-
-    h = hh[3];
-    l = hl[3];
-
-    a += l & 0xffff;
-    b += l >>> 16;
-    c += h & 0xffff;
-    d += h >>> 16;
-
-    b += a >>> 16;
-    c += b >>> 16;
-    d += c >>> 16;
-
-    hh[3] = ah3 = (c & 0xffff) | (d << 16);
-    hl[3] = al3 = (a & 0xffff) | (b << 16);
-
-    h = ah4;
-    l = al4;
-
-    a = l & 0xffff;
-    b = l >>> 16;
-    c = h & 0xffff;
-    d = h >>> 16;
-
-    h = hh[4];
-    l = hl[4];
-
-    a += l & 0xffff;
-    b += l >>> 16;
-    c += h & 0xffff;
-    d += h >>> 16;
-
-    b += a >>> 16;
-    c += b >>> 16;
-    d += c >>> 16;
-
-    hh[4] = ah4 = (c & 0xffff) | (d << 16);
-    hl[4] = al4 = (a & 0xffff) | (b << 16);
-
-    h = ah5;
-    l = al5;
-
-    a = l & 0xffff;
-    b = l >>> 16;
-    c = h & 0xffff;
-    d = h >>> 16;
-
-    h = hh[5];
-    l = hl[5];
-
-    a += l & 0xffff;
-    b += l >>> 16;
-    c += h & 0xffff;
-    d += h >>> 16;
-
-    b += a >>> 16;
-    c += b >>> 16;
-    d += c >>> 16;
-
-    hh[5] = ah5 = (c & 0xffff) | (d << 16);
-    hl[5] = al5 = (a & 0xffff) | (b << 16);
-
-    h = ah6;
-    l = al6;
-
-    a = l & 0xffff;
-    b = l >>> 16;
-    c = h & 0xffff;
-    d = h >>> 16;
-
-    h = hh[6];
-    l = hl[6];
-
-    a += l & 0xffff;
-    b += l >>> 16;
-    c += h & 0xffff;
-    d += h >>> 16;
-
-    b += a >>> 16;
-    c += b >>> 16;
-    d += c >>> 16;
-
-    hh[6] = ah6 = (c & 0xffff) | (d << 16);
-    hl[6] = al6 = (a & 0xffff) | (b << 16);
-
-    h = ah7;
-    l = al7;
-
-    a = l & 0xffff;
-    b = l >>> 16;
-    c = h & 0xffff;
-    d = h >>> 16;
-
-    h = hh[7];
-    l = hl[7];
-
-    a += l & 0xffff;
-    b += l >>> 16;
-    c += h & 0xffff;
-    d += h >>> 16;
-
-    b += a >>> 16;
-    c += b >>> 16;
-    d += c >>> 16;
-
-    hh[7] = ah7 = (c & 0xffff) | (d << 16);
-    hl[7] = al7 = (a & 0xffff) | (b << 16);
-
-    pos += 128;
-    n -= 128;
-  }
-
-  return n;
-}
-
-function crypto_hash(out: Uint8Array, m: Uint8Array, n: number): number {
-  const hh = new Int32Array(8);
-  const hl = new Int32Array(8);
-  const x = new Uint8Array(256);
-  const b = n;
-
-  hh[0] = 0x6a09e667;
-  hh[1] = 0xbb67ae85;
-  hh[2] = 0x3c6ef372;
-  hh[3] = 0xa54ff53a;
-  hh[4] = 0x510e527f;
-  hh[5] = 0x9b05688c;
-  hh[6] = 0x1f83d9ab;
-  hh[7] = 0x5be0cd19;
-
-  hl[0] = 0xf3bcc908;
-  hl[1] = 0x84caa73b;
-  hl[2] = 0xfe94f82b;
-  hl[3] = 0x5f1d36f1;
-  hl[4] = 0xade682d1;
-  hl[5] = 0x2b3e6c1f;
-  hl[6] = 0xfb41bd6b;
-  hl[7] = 0x137e2179;
-
-  crypto_hashblocks_hl(hh, hl, m, n);
-  n %= 128;
-
-  for (let i = 0; i < n; i++) x[i] = m[b - n + i];
-  x[n] = 128;
-
-  n = 256 - 128 * (n < 112 ? 1 : 0);
-  x[n - 9] = 0;
-  ts64(x, n - 8, (b / 0x20000000) | 0, b << 3);
-  crypto_hashblocks_hl(hh, hl, x, n);
-
-  for (let i = 0; i < 8; i++) ts64(out, 8 * i, hh[i], hl[i]);
-
-  return 0;
-}
-
-/**
- * Incremental version of crypto_hash.
- */
-export class HashState {
-  private hh = new Int32Array(8);
-  private hl = new Int32Array(8);
-
-  private next = new Uint8Array(128);
-  private p = 0;
-  private total = 0;
-
-  constructor() {
-    this.hh[0] = 0x6a09e667;
-    this.hh[1] = 0xbb67ae85;
-    this.hh[2] = 0x3c6ef372;
-    this.hh[3] = 0xa54ff53a;
-    this.hh[4] = 0x510e527f;
-    this.hh[5] = 0x9b05688c;
-    this.hh[6] = 0x1f83d9ab;
-    this.hh[7] = 0x5be0cd19;
-
-    this.hl[0] = 0xf3bcc908;
-    this.hl[1] = 0x84caa73b;
-    this.hl[2] = 0xfe94f82b;
-    this.hl[3] = 0x5f1d36f1;
-    this.hl[4] = 0xade682d1;
-    this.hl[5] = 0x2b3e6c1f;
-    this.hl[6] = 0xfb41bd6b;
-    this.hl[7] = 0x137e2179;
-  }
-
-  update(data: Uint8Array): HashState {
-    this.total += data.length;
-    let i = 0;
-    while (i < data.length) {
-      const r = 128 - this.p;
-      if (r > data.length - i) {
-        for (let j = 0; i + j < data.length; j++) {
-          this.next[this.p + j] = data[i + j];
-        }
-        this.p += data.length - i;
-        break;
-      } else {
-        for (let j = 0; this.p + j < 128; j++) {
-          this.next[this.p + j] = data[i + j];
-        }
-        crypto_hashblocks_hl(this.hh, this.hl, this.next, 128);
-        i += 128 - this.p;
-        this.p = 0;
-      }
-    }
-    return this;
-  }
-
-  finish(): Uint8Array {
-    const out = new Uint8Array(64);
-    let n = this.p;
-    const x = new Uint8Array(256);
-    const b = this.total;
-    for (let i = 0; i < n; i++) x[i] = this.next[i];
-    x[n] = 128;
-
-    n = 256 - 128 * (n < 112 ? 1 : 0);
-    x[n - 9] = 0;
-    ts64(x, n - 8, (b / 0x20000000) | 0, b << 3);
-    crypto_hashblocks_hl(this.hh, this.hl, x, n);
-
-    for (let i = 0; i < 8; i++) ts64(out, 8 * i, this.hh[i], this.hl[i]);
-    return out;
-  }
-}
-
-function add(p: Float64Array[], q: Float64Array[]): void {
-  const a = gf(),
-    b = gf(),
-    c = gf(),
-    d = gf(),
-    e = gf(),
-    f = gf(),
-    g = gf(),
-    h = gf(),
-    t = gf();
-
-  Z(a, p[1], p[0]);
-  Z(t, q[1], q[0]);
-  M(a, a, t);
-  A(b, p[0], p[1]);
-  A(t, q[0], q[1]);
-  M(b, b, t);
-  M(c, p[3], q[3]);
-  M(c, c, D2);
-  M(d, p[2], q[2]);
-  A(d, d, d);
-  Z(e, b, a);
-  Z(f, d, c);
-  A(g, d, c);
-  A(h, b, a);
-
-  M(p[0], e, f);
-  M(p[1], h, g);
-  M(p[2], g, f);
-  M(p[3], e, h);
-}
-
-function cswap(p: Float64Array[], q: Float64Array[], b: number): void {
-  let i;
-  for (i = 0; i < 4; i++) {
-    sel25519(p[i], q[i], b);
-  }
-}
-
-function pack(r: Uint8Array, p: Float64Array[]): void {
-  const tx = gf(),
-    ty = gf(),
-    zi = gf();
-  inv25519(zi, p[2]);
-  M(tx, p[0], zi);
-  M(ty, p[1], zi);
-  pack25519(r, ty);
-  r[31] ^= par25519(tx) << 7;
-}
-
-function scalarmult(p: Float64Array[], q: Float64Array[], s: Uint8Array): void {
-  let b, i;
-  set25519(p[0], gf0);
-  set25519(p[1], gf1);
-  set25519(p[2], gf1);
-  set25519(p[3], gf0);
-  for (i = 255; i >= 0; --i) {
-    b = (s[(i / 8) | 0] >> (i & 7)) & 1;
-    cswap(p, q, b);
-    add(q, p);
-    add(p, p);
-    cswap(p, q, b);
-  }
-}
-
-function scalarbase(p: Float64Array[], s: Uint8Array): void {
-  const q = [gf(), gf(), gf(), gf()];
-  set25519(q[0], X);
-  set25519(q[1], Y);
-  set25519(q[2], gf1);
-  M(q[3], X, Y);
-  scalarmult(p, q, s);
-}
-
-function crypto_sign_keypair(
-  pk: Uint8Array,
-  sk: Uint8Array,
-  seeded: boolean,
-): number {
-  const d = new Uint8Array(64);
-  const p = [gf(), gf(), gf(), gf()];
-
-  if (!seeded) randombytes(sk, 32);
-  crypto_hash(d, sk, 32);
-  d[0] &= 248;
-  d[31] &= 127;
-  d[31] |= 64;
-
-  scalarbase(p, d);
-  pack(pk, p);
-
-  for (let i = 0; i < 32; i++) sk[i + 32] = pk[i];
-  return 0;
-}
-
-const L = new Float64Array([
-  0xed,
-  0xd3,
-  0xf5,
-  0x5c,
-  0x1a,
-  0x63,
-  0x12,
-  0x58,
-  0xd6,
-  0x9c,
-  0xf7,
-  0xa2,
-  0xde,
-  0xf9,
-  0xde,
-  0x14,
-  0,
-  0,
-  0,
-  0,
-  0,
-  0,
-  0,
-  0,
-  0,
-  0,
-  0,
-  0,
-  0,
-  0,
-  0,
-  0x10,
-]);
-
-function modL(r: Uint8Array, x: Float64Array): void {
-  let carry, i, j, k;
-  for (i = 63; i >= 32; --i) {
-    carry = 0;
-    for (j = i - 32, k = i - 12; j < k; ++j) {
-      x[j] += carry - 16 * x[i] * L[j - (i - 32)];
-      carry = (x[j] + 128) >> 8;
-      x[j] -= carry * 256;
-    }
-    x[j] += carry;
-    x[i] = 0;
-  }
-  carry = 0;
-  for (j = 0; j < 32; j++) {
-    x[j] += carry - (x[31] >> 4) * L[j];
-    carry = x[j] >> 8;
-    x[j] &= 255;
-  }
-  for (j = 0; j < 32; j++) x[j] -= carry * L[j];
-  for (i = 0; i < 32; i++) {
-    x[i + 1] += x[i] >> 8;
-    r[i] = x[i] & 255;
-  }
-}
-
-function reduce(r: Uint8Array): void {
-  const x = new Float64Array(64);
-  for (let i = 0; i < 64; i++) x[i] = r[i];
-  for (let i = 0; i < 64; i++) r[i] = 0;
-  modL(r, x);
-}
-
-// Note: difference from C - smlen returned, not passed as argument.
-function crypto_sign(
-  sm: Uint8Array,
-  m: Uint8Array,
-  n: number,
-  sk: Uint8Array,
-): number {
-  const d = new Uint8Array(64),
-    h = new Uint8Array(64),
-    r = new Uint8Array(64);
-  let i, j;
-  const x = new Float64Array(64);
-  const p = [gf(), gf(), gf(), gf()];
-
-  crypto_hash(d, sk, 32);
-  d[0] &= 248;
-  d[31] &= 127;
-  d[31] |= 64;
-
-  const smlen = n + 64;
-  for (i = 0; i < n; i++) sm[64 + i] = m[i];
-  for (i = 0; i < 32; i++) sm[32 + i] = d[32 + i];
-
-  crypto_hash(r, sm.subarray(32), n + 32);
-  reduce(r);
-  scalarbase(p, r);
-  pack(sm, p);
-
-  for (i = 32; i < 64; i++) sm[i] = sk[i];
-  crypto_hash(h, sm, n + 64);
-  reduce(h);
-
-  for (i = 0; i < 64; i++) x[i] = 0;
-  for (i = 0; i < 32; i++) x[i] = r[i];
-  for (i = 0; i < 32; i++) {
-    for (j = 0; j < 32; j++) {
-      x[i + j] += h[i] * d[j];
-    }
-  }
-
-  modL(sm.subarray(32), x);
-  return smlen;
-}
-
-function unpackneg(r: Float64Array[], p: Uint8Array): number {
-  const t = gf();
-  const chk = gf();
-  const num = gf();
-  const den = gf();
-  const den2 = gf();
-  const den4 = gf();
-  const den6 = gf();
-
-  set25519(r[2], gf1);
-  unpack25519(r[1], p);
-  S(num, r[1]);
-  M(den, num, D);
-  Z(num, num, r[2]);
-  A(den, r[2], den);
-
-  S(den2, den);
-  S(den4, den2);
-  M(den6, den4, den2);
-  M(t, den6, num);
-  M(t, t, den);
-
-  pow2523(t, t);
-  M(t, t, num);
-  M(t, t, den);
-  M(t, t, den);
-  M(r[0], t, den);
-
-  S(chk, r[0]);
-  M(chk, chk, den);
-  if (neq25519(chk, num)) M(r[0], r[0], I);
-
-  S(chk, r[0]);
-  M(chk, chk, den);
-  if (neq25519(chk, num)) return -1;
-
-  if (par25519(r[0]) === p[31] >> 7) Z(r[0], gf0, r[0]);
-
-  M(r[3], r[0], r[1]);
-  return 0;
-}
-
-function crypto_sign_open(
-  m: Uint8Array,
-  sm: Uint8Array,
-  n: number,
-  pk: Uint8Array,
-): number {
-  let i, mlen;
-  const t = new Uint8Array(32),
-    h = new Uint8Array(64);
-  const p = [gf(), gf(), gf(), gf()],
-    q = [gf(), gf(), gf(), gf()];
-
-  mlen = -1;
-  if (n < 64) return -1;
-
-  if (unpackneg(q, pk)) return -1;
-
-  for (i = 0; i < n; i++) m[i] = sm[i];
-  for (i = 0; i < 32; i++) m[i + 32] = pk[i];
-  crypto_hash(h, m, n);
-  reduce(h);
-  scalarmult(p, q, h);
-
-  scalarbase(q, sm.subarray(32));
-  add(p, q);
-  pack(t, p);
-
-  n -= 64;
-  if (crypto_verify_32(sm, 0, t, 0)) {
-    for (i = 0; i < n; i++) m[i] = 0;
-    return -1;
-  }
-
-  for (i = 0; i < n; i++) m[i] = sm[i + 64];
-  mlen = n;
-  return mlen;
-}
-
-const crypto_scalarmult_BYTES = 32,
-  crypto_scalarmult_SCALARBYTES = 32,
-  crypto_sign_BYTES = 64,
-  crypto_sign_PUBLICKEYBYTES = 32,
-  crypto_sign_SECRETKEYBYTES = 64,
-  crypto_sign_SEEDBYTES = 32,
-  crypto_hash_BYTES = 64;
-
-/* High-level API */
-
-function checkArrayTypes(...args: Uint8Array[]): void {
-  for (let i = 0; i < args.length; i++) {
-    if (!(args[i] instanceof Uint8Array))
-      throw new TypeError("unexpected type, use Uint8Array");
-  }
-}
-
-function cleanup(arr: Uint8Array): void {
-  for (let i = 0; i < arr.length; i++) arr[i] = 0;
-}
-
-export function randomBytes(n: number): Uint8Array {
-  const b = new Uint8Array(n);
-  randombytes(b, n);
-  return b;
-}
-
-export function scalarMult(n: Uint8Array, p: Uint8Array): Uint8Array {
-  checkArrayTypes(n, p);
-  if (n.length !== crypto_scalarmult_SCALARBYTES) throw new Error("bad n size");
-  if (p.length !== crypto_scalarmult_BYTES) throw new Error("bad p size");
-  const q = new Uint8Array(crypto_scalarmult_BYTES);
-  crypto_scalarmult(q, n, p);
-  return q;
-}
-
-export function scalarMult_base(n: Uint8Array): Uint8Array {
-  checkArrayTypes(n);
-  if (n.length !== crypto_scalarmult_SCALARBYTES) throw new Error("bad n size");
-  const q = new Uint8Array(crypto_scalarmult_BYTES);
-  crypto_scalarmult_base(q, n);
-  return q;
-}
-
-export const scalarMult_scalarLength = crypto_scalarmult_SCALARBYTES;
-export const scalarMult_groupElementLength = crypto_scalarmult_BYTES;
-
-export function sign(msg: Uint8Array, secretKey: Uint8Array): Uint8Array {
-  checkArrayTypes(msg, secretKey);
-  if (secretKey.length !== crypto_sign_SECRETKEYBYTES)
-    throw new Error("bad secret key size");
-  const signedMsg = new Uint8Array(crypto_sign_BYTES + msg.length);
-  crypto_sign(signedMsg, msg, msg.length, secretKey);
-  return signedMsg;
-}
-
-export function sign_open(
-  signedMsg: Uint8Array,
-  publicKey: Uint8Array,
-): Uint8Array | null {
-  checkArrayTypes(signedMsg, publicKey);
-  if (publicKey.length !== crypto_sign_PUBLICKEYBYTES)
-    throw new Error("bad public key size");
-  const tmp = new Uint8Array(signedMsg.length);
-  const mlen = crypto_sign_open(tmp, signedMsg, signedMsg.length, publicKey);
-  if (mlen < 0) return null;
-  const m = new Uint8Array(mlen);
-  for (let i = 0; i < m.length; i++) m[i] = tmp[i];
-  return m;
-}
-
-export function sign_detached(
-  msg: Uint8Array,
-  secretKey: Uint8Array,
-): Uint8Array {
-  const signedMsg = sign(msg, secretKey);
-  const sig = new Uint8Array(crypto_sign_BYTES);
-  for (let i = 0; i < sig.length; i++) sig[i] = signedMsg[i];
-  return sig;
-}
-
-export function sign_detached_verify(
-  msg: Uint8Array,
-  sig: Uint8Array,
-  publicKey: Uint8Array,
-): boolean {
-  checkArrayTypes(msg, sig, publicKey);
-  if (sig.length !== crypto_sign_BYTES) throw new Error("bad signature size");
-  if (publicKey.length !== crypto_sign_PUBLICKEYBYTES)
-    throw new Error("bad public key size");
-  const sm = new Uint8Array(crypto_sign_BYTES + msg.length);
-  const m = new Uint8Array(crypto_sign_BYTES + msg.length);
-  let i;
-  for (i = 0; i < crypto_sign_BYTES; i++) sm[i] = sig[i];
-  for (i = 0; i < msg.length; i++) sm[i + crypto_sign_BYTES] = msg[i];
-  return crypto_sign_open(m, sm, sm.length, publicKey) >= 0;
-}
-
-export function sign_keyPair(): {
-  publicKey: Uint8Array;
-  secretKey: Uint8Array;
-} {
-  const pk = new Uint8Array(crypto_sign_PUBLICKEYBYTES);
-  const sk = new Uint8Array(crypto_sign_SECRETKEYBYTES);
-  crypto_sign_keypair(pk, sk, false);
-  return { publicKey: pk, secretKey: sk };
-}
-
-export function x25519_edwards_keyPair_fromSecretKey(
-  secretKey: Uint8Array,
-): Uint8Array {
-  const p = [gf(), gf(), gf(), gf()];
-  const pk = new Uint8Array(32);
-
-  const d = new Uint8Array(64);
-  if (secretKey.length != 32) {
-    throw new Error("bad secret key size");
-  }
-  d.set(secretKey, 0);
-  //crypto_hash(d, secretKey, 32);
-
-  d[0] &= 248;
-  d[31] &= 127;
-  d[31] |= 64;
-
-  scalarbase(p, d);
-  pack(pk, p);
-
-  return pk;
-}
-
-export function sign_keyPair_fromSecretKey(
-  secretKey: Uint8Array,
-): {
-  publicKey: Uint8Array;
-  secretKey: Uint8Array;
-} {
-  checkArrayTypes(secretKey);
-  if (secretKey.length !== crypto_sign_SECRETKEYBYTES)
-    throw new Error("bad secret key size");
-  const pk = new Uint8Array(crypto_sign_PUBLICKEYBYTES);
-  for (let i = 0; i < pk.length; i++) pk[i] = secretKey[32 + i];
-  return { publicKey: pk, secretKey: new Uint8Array(secretKey) };
-}
-
-export function sign_keyPair_fromSeed(
-  seed: Uint8Array,
-): {
-  publicKey: Uint8Array;
-  secretKey: Uint8Array;
-} {
-  checkArrayTypes(seed);
-  if (seed.length !== crypto_sign_SEEDBYTES) throw new Error("bad seed size");
-  const pk = new Uint8Array(crypto_sign_PUBLICKEYBYTES);
-  const sk = new Uint8Array(crypto_sign_SECRETKEYBYTES);
-  for (let i = 0; i < 32; i++) sk[i] = seed[i];
-  crypto_sign_keypair(pk, sk, true);
-  return { publicKey: pk, secretKey: sk };
-}
-
-export const sign_publicKeyLength = crypto_sign_PUBLICKEYBYTES;
-export const sign_secretKeyLength = crypto_sign_SECRETKEYBYTES;
-export const sign_seedLength = crypto_sign_SEEDBYTES;
-export const sign_signatureLength = crypto_sign_BYTES;
-
-export function hash(msg: Uint8Array): Uint8Array {
-  checkArrayTypes(msg);
-  const h = new Uint8Array(crypto_hash_BYTES);
-  crypto_hash(h, msg, msg.length);
-  return h;
-}
-
-export const hash_hashLength = crypto_hash_BYTES;
-
-export function verify(x: Uint8Array, y: Uint8Array): boolean {
-  checkArrayTypes(x, y);
-  // Zero length arguments are considered not equal.
-  if (x.length === 0 || y.length === 0) return false;
-  if (x.length !== y.length) return false;
-  return vn(x, 0, y, 0, x.length) === 0 ? true : false;
-}
-
-export function setPRNG(fn: (x: Uint8Array, n: number) => void): void {
-  randombytes = fn;
-}
-
-export function sign_ed25519_pk_to_curve25519(
-  ed25519_pk: Uint8Array,
-): Uint8Array {
-  const ge_a = [gf(), gf(), gf(), gf()];
-  const x = gf();
-  const one_minus_y = gf();
-  const x25519_pk = new Uint8Array(32);
-
-  if (unpackneg(ge_a, ed25519_pk)) {
-    throw Error("invalid public key");
-  }
-
-  set25519(one_minus_y, gf1);
-  Z(one_minus_y, one_minus_y, ge_a[1]);
-
-  set25519(x, gf1);
-  A(x, x, ge_a[1]);
-
-  inv25519(one_minus_y, one_minus_y);
-  M(x, x, one_minus_y);
-  pack25519(x25519_pk, x);
-
-  return x25519_pk;
-}
-
-(function () {
-  // Initialize PRNG if environment provides CSPRNG.
-  // If not, methods calling randombytes will throw.
-  const cr =
-    typeof self !== "undefined" ? self.crypto || (self as any).msCrypto : null;
-  if (cr && cr.getRandomValues) {
-    // Browsers.
-    const QUOTA = 65536;
-    setPRNG(function (x: Uint8Array, n: number) {
-      let i;
-      const v = new Uint8Array(n);
-      for (i = 0; i < n; i += QUOTA) {
-        cr.getRandomValues(v.subarray(i, i + Math.min(n - i, QUOTA)));
-      }
-      for (i = 0; i < n; i++) x[i] = v[i];
-      cleanup(v);
-    });
-  } else if (typeof require !== "undefined") {
-    // Node.js.
-    // eslint-disable-next-line @typescript-eslint/no-var-requires
-    const cr = require("crypto");
-    if (cr && cr.randomBytes) {
-      setPRNG(function (x: Uint8Array, n: number) {
-        const v = cr.randomBytes(n);
-        for (let i = 0; i < n; i++) x[i] = v[i];
-        cleanup(v);
-      });
-    }
-  }
-})();
diff --git a/src/crypto/primitives/sha256.ts b/src/crypto/primitives/sha256.ts
deleted file mode 100644
index 97723dbfc..000000000
--- a/src/crypto/primitives/sha256.ts
+++ /dev/null
@@ -1,426 +0,0 @@
-// SHA-256 for JavaScript.
-//
-// Written in 2014-2016 by Dmitry Chestnykh.
-// Public domain, no warranty.
-//
-// Functions (accept and return Uint8Arrays):
-//
-//   sha256(message) -> hash
-//   sha256.hmac(key, message) -> mac
-//
-//  Classes:
-//
-//   new sha256.Hash()
-export const digestLength = 32;
-export const blockSize = 64;
-
-// SHA-256 constants
-const K = new Uint32Array([
-  0x428a2f98,
-  0x71374491,
-  0xb5c0fbcf,
-  0xe9b5dba5,
-  0x3956c25b,
-  0x59f111f1,
-  0x923f82a4,
-  0xab1c5ed5,
-  0xd807aa98,
-  0x12835b01,
-  0x243185be,
-  0x550c7dc3,
-  0x72be5d74,
-  0x80deb1fe,
-  0x9bdc06a7,
-  0xc19bf174,
-  0xe49b69c1,
-  0xefbe4786,
-  0x0fc19dc6,
-  0x240ca1cc,
-  0x2de92c6f,
-  0x4a7484aa,
-  0x5cb0a9dc,
-  0x76f988da,
-  0x983e5152,
-  0xa831c66d,
-  0xb00327c8,
-  0xbf597fc7,
-  0xc6e00bf3,
-  0xd5a79147,
-  0x06ca6351,
-  0x14292967,
-  0x27b70a85,
-  0x2e1b2138,
-  0x4d2c6dfc,
-  0x53380d13,
-  0x650a7354,
-  0x766a0abb,
-  0x81c2c92e,
-  0x92722c85,
-  0xa2bfe8a1,
-  0xa81a664b,
-  0xc24b8b70,
-  0xc76c51a3,
-  0xd192e819,
-  0xd6990624,
-  0xf40e3585,
-  0x106aa070,
-  0x19a4c116,
-  0x1e376c08,
-  0x2748774c,
-  0x34b0bcb5,
-  0x391c0cb3,
-  0x4ed8aa4a,
-  0x5b9cca4f,
-  0x682e6ff3,
-  0x748f82ee,
-  0x78a5636f,
-  0x84c87814,
-  0x8cc70208,
-  0x90befffa,
-  0xa4506ceb,
-  0xbef9a3f7,
-  0xc67178f2,
-]);
-
-function hashBlocks(
-  w: Int32Array,
-  v: Int32Array,
-  p: Uint8Array,
-  pos: number,
-  len: number,
-): number {
-  let a: number,
-    b: number,
-    c: number,
-    d: number,
-    e: number,
-    f: number,
-    g: number,
-    h: number,
-    u: number,
-    i: number,
-    j: number,
-    t1: number,
-    t2: number;
-  while (len >= 64) {
-    a = v[0];
-    b = v[1];
-    c = v[2];
-    d = v[3];
-    e = v[4];
-    f = v[5];
-    g = v[6];
-    h = v[7];
-
-    for (i = 0; i < 16; i++) {
-      j = pos + i * 4;
-      w[i] =
-        ((p[j] & 0xff) << 24) |
-        ((p[j + 1] & 0xff) << 16) |
-        ((p[j + 2] & 0xff) << 8) |
-        (p[j + 3] & 0xff);
-    }
-
-    for (i = 16; i < 64; i++) {
-      u = w[i - 2];
-      t1 =
-        ((u >>> 17) | (u << (32 - 17))) ^
-        ((u >>> 19) | (u << (32 - 19))) ^
-        (u >>> 10);
-
-      u = w[i - 15];
-      t2 =
-        ((u >>> 7) | (u << (32 - 7))) ^
-        ((u >>> 18) | (u << (32 - 18))) ^
-        (u >>> 3);
-
-      w[i] = ((t1 + w[i - 7]) | 0) + ((t2 + w[i - 16]) | 0);
-    }
-
-    for (i = 0; i < 64; i++) {
-      t1 =
-        ((((((e >>> 6) | (e << (32 - 6))) ^
-          ((e >>> 11) | (e << (32 - 11))) ^
-          ((e >>> 25) | (e << (32 - 25)))) +
-          ((e & f) ^ (~e & g))) |
-          0) +
-          ((h + ((K[i] + w[i]) | 0)) | 0)) |
-        0;
-
-      t2 =
-        ((((a >>> 2) | (a << (32 - 2))) ^
-          ((a >>> 13) | (a << (32 - 13))) ^
-          ((a >>> 22) | (a << (32 - 22)))) +
-          ((a & b) ^ (a & c) ^ (b & c))) |
-        0;
-
-      h = g;
-      g = f;
-      f = e;
-      e = (d + t1) | 0;
-      d = c;
-      c = b;
-      b = a;
-      a = (t1 + t2) | 0;
-    }
-
-    v[0] += a;
-    v[1] += b;
-    v[2] += c;
-    v[3] += d;
-    v[4] += e;
-    v[5] += f;
-    v[6] += g;
-    v[7] += h;
-
-    pos += 64;
-    len -= 64;
-  }
-  return pos;
-}
-
-// Hash implements SHA256 hash algorithm.
-export class HashSha256 {
-  digestLength: number = digestLength;
-  blockSize: number = blockSize;
-
-  // Note: Int32Array is used instead of Uint32Array for performance reasons.
-  private state: Int32Array = new Int32Array(8); // hash state
-  private temp: Int32Array = new Int32Array(64); // temporary state
-  private buffer: Uint8Array = new Uint8Array(128); // buffer for data to hash
-  private bufferLength = 0; // number of bytes in buffer
-  private bytesHashed = 0; // number of total bytes hashed
-
-  finished = false; // indicates whether the hash was finalized
-
-  constructor() {
-    this.reset();
-  }
-
-  // Resets hash state making it possible
-  // to re-use this instance to hash other data.
-  reset(): this {
-    this.state[0] = 0x6a09e667;
-    this.state[1] = 0xbb67ae85;
-    this.state[2] = 0x3c6ef372;
-    this.state[3] = 0xa54ff53a;
-    this.state[4] = 0x510e527f;
-    this.state[5] = 0x9b05688c;
-    this.state[6] = 0x1f83d9ab;
-    this.state[7] = 0x5be0cd19;
-    this.bufferLength = 0;
-    this.bytesHashed = 0;
-    this.finished = false;
-    return this;
-  }
-
-  // Cleans internal buffers and re-initializes hash state.
-  clean(): void {
-    for (let i = 0; i < this.buffer.length; i++) {
-      this.buffer[i] = 0;
-    }
-    for (let i = 0; i < this.temp.length; i++) {
-      this.temp[i] = 0;
-    }
-    this.reset();
-  }
-
-  // Updates hash state with the given data.
-  //
-  // Optionally, length of the data can be specified to hash
-  // fewer bytes than data.length.
-  //
-  // Throws error when trying to update already finalized hash:
-  // instance must be reset to use it again.
-  update(data: Uint8Array, dataLength: number = data.length): this {
-    if (this.finished) {
-      throw new Error("SHA256: can't update because hash was finished.");
-    }
-    let dataPos = 0;
-    this.bytesHashed += dataLength;
-    if (this.bufferLength > 0) {
-      while (this.bufferLength < 64 && dataLength > 0) {
-        this.buffer[this.bufferLength++] = data[dataPos++];
-        dataLength--;
-      }
-      if (this.bufferLength === 64) {
-        hashBlocks(this.temp, this.state, this.buffer, 0, 64);
-        this.bufferLength = 0;
-      }
-    }
-    if (dataLength >= 64) {
-      dataPos = hashBlocks(this.temp, this.state, data, dataPos, dataLength);
-      dataLength %= 64;
-    }
-    while (dataLength > 0) {
-      this.buffer[this.bufferLength++] = data[dataPos++];
-      dataLength--;
-    }
-    return this;
-  }
-
-  // Finalizes hash state and puts hash into out.
-  //
-  // If hash was already finalized, puts the same value.
-  finish(out: Uint8Array): this {
-    if (!this.finished) {
-      const bytesHashed = this.bytesHashed;
-      const left = this.bufferLength;
-      const bitLenHi = (bytesHashed / 0x20000000) | 0;
-      const bitLenLo = bytesHashed << 3;
-      const padLength = bytesHashed % 64 < 56 ? 64 : 128;
-
-      this.buffer[left] = 0x80;
-      for (let i = left + 1; i < padLength - 8; i++) {
-        this.buffer[i] = 0;
-      }
-      this.buffer[padLength - 8] = (bitLenHi >>> 24) & 0xff;
-      this.buffer[padLength - 7] = (bitLenHi >>> 16) & 0xff;
-      this.buffer[padLength - 6] = (bitLenHi >>> 8) & 0xff;
-      this.buffer[padLength - 5] = (bitLenHi >>> 0) & 0xff;
-      this.buffer[padLength - 4] = (bitLenLo >>> 24) & 0xff;
-      this.buffer[padLength - 3] = (bitLenLo >>> 16) & 0xff;
-      this.buffer[padLength - 2] = (bitLenLo >>> 8) & 0xff;
-      this.buffer[padLength - 1] = (bitLenLo >>> 0) & 0xff;
-
-      hashBlocks(this.temp, this.state, this.buffer, 0, padLength);
-
-      this.finished = true;
-    }
-
-    for (let i = 0; i < 8; i++) {
-      out[i * 4 + 0] = (this.state[i] >>> 24) & 0xff;
-      out[i * 4 + 1] = (this.state[i] >>> 16) & 0xff;
-      out[i * 4 + 2] = (this.state[i] >>> 8) & 0xff;
-      out[i * 4 + 3] = (this.state[i] >>> 0) & 0xff;
-    }
-
-    return this;
-  }
-
-  // Returns the final hash digest.
-  digest(): Uint8Array {
-    const out = new Uint8Array(this.digestLength);
-    this.finish(out);
-    return out;
-  }
-
-  // Internal function for use in HMAC for optimization.
-  _saveState(out: Uint32Array): void {
-    for (let i = 0; i < this.state.length; i++) {
-      out[i] = this.state[i];
-    }
-  }
-
-  // Internal function for use in HMAC for optimization.
-  _restoreState(from: Uint32Array, bytesHashed: number): void {
-    for (let i = 0; i < this.state.length; i++) {
-      this.state[i] = from[i];
-    }
-    this.bytesHashed = bytesHashed;
-    this.finished = false;
-    this.bufferLength = 0;
-  }
-}
-
-// HMAC implements HMAC-SHA256 message authentication algorithm.
-export class HMAC {
-  private inner: HashSha256 = new HashSha256();
-  private outer: HashSha256 = new HashSha256();
-
-  blockSize: number = this.inner.blockSize;
-  digestLength: number = this.inner.digestLength;
-
-  // Copies of hash states after keying.
-  // Need for quick reset without hashing they key again.
-  private istate: Uint32Array;
-  private ostate: Uint32Array;
-
-  constructor(key: Uint8Array) {
-    const pad = new Uint8Array(this.blockSize);
-    if (key.length > this.blockSize) {
-      new HashSha256().update(key).finish(pad).clean();
-    } else {
-      for (let i = 0; i < key.length; i++) {
-        pad[i] = key[i];
-      }
-    }
-    for (let i = 0; i < pad.length; i++) {
-      pad[i] ^= 0x36;
-    }
-    this.inner.update(pad);
-
-    for (let i = 0; i < pad.length; i++) {
-      pad[i] ^= 0x36 ^ 0x5c;
-    }
-    this.outer.update(pad);
-
-    this.istate = new Uint32Array(8);
-    this.ostate = new Uint32Array(8);
-
-    this.inner._saveState(this.istate);
-    this.outer._saveState(this.ostate);
-
-    for (let i = 0; i < pad.length; i++) {
-      pad[i] = 0;
-    }
-  }
-
-  // Returns HMAC state to the state initialized with key
-  // to make it possible to run HMAC over the other data with the same
-  // key without creating a new instance.
-  reset(): this {
-    this.inner._restoreState(this.istate, this.inner.blockSize);
-    this.outer._restoreState(this.ostate, this.outer.blockSize);
-    return this;
-  }
-
-  // Cleans HMAC state.
-  clean(): void {
-    for (let i = 0; i < this.istate.length; i++) {
-      this.ostate[i] = this.istate[i] = 0;
-    }
-    this.inner.clean();
-    this.outer.clean();
-  }
-
-  // Updates state with provided data.
-  update(data: Uint8Array): this {
-    this.inner.update(data);
-    return this;
-  }
-
-  // Finalizes HMAC and puts the result in out.
-  finish(out: Uint8Array): this {
-    if (this.outer.finished) {
-      this.outer.finish(out);
-    } else {
-      this.inner.finish(out);
-      this.outer.update(out, this.digestLength).finish(out);
-    }
-    return this;
-  }
-
-  // Returns message authentication code.
-  digest(): Uint8Array {
-    const out = new Uint8Array(this.digestLength);
-    this.finish(out);
-    return out;
-  }
-}
-
-// Returns SHA256 hash of data.
-export function sha256(data: Uint8Array): Uint8Array {
-  const h = new HashSha256().update(data);
-  const digest = h.digest();
-  h.clean();
-  return digest;
-}
-
-// Returns HMAC-SHA256 of data under the key.
-export function hmacSha256(key: Uint8Array, data: Uint8Array): Uint8Array {
-  const h = new HMAC(key).update(data);
-  const digest = h.digest();
-  h.clean();
-  return digest;
-}
diff --git a/src/crypto/talerCrypto-test.ts b/src/crypto/talerCrypto-test.ts
deleted file mode 100644
index 1cd9da3e2..000000000
--- a/src/crypto/talerCrypto-test.ts
+++ /dev/null
@@ -1,197 +0,0 @@
-/*
- This file is part of GNU Taler
- (C) 2019 GNUnet e.V.
-
- GNU Taler is free software; you can redistribute it and/or modify it under the
- terms of the GNU General Public License as published by the Free Software
- Foundation; either version 3, or (at your option) any later version.
-
- GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
- WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
- A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License along with
- GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
- */
-
-/**
- * Imports
- */
-import test from "ava";
-import {
-  encodeCrock,
-  decodeCrock,
-  ecdheGetPublic,
-  eddsaGetPublic,
-  keyExchangeEddsaEcdhe,
-  keyExchangeEcdheEddsa,
-  rsaBlind,
-  rsaUnblind,
-  rsaVerify,
-} from "./talerCrypto";
-import { sha512, kdf } from "./primitives/kdf";
-import * as nacl from "./primitives/nacl-fast";
-
-test("encoding", (t) => {
-  const utf8decoder = new TextDecoder("utf-8");
-  const utf8encoder = new TextEncoder();
-  const s = "Hello, World";
-  const encStr = encodeCrock(utf8encoder.encode(s));
-  const outBuf = decodeCrock(encStr);
-  const sOut = utf8decoder.decode(outBuf);
-  t.deepEqual(s, sOut);
-});
-
-test("taler-exchange-tvg hash code", (t) => {
-  const input = "91JPRV3F5GG4EKJN41A62V35E8";
-  const output =
-    "CW96WR74JS8T53EC8GKSGD49QKH4ZNFTZXDAWMMV5GJ1E4BM6B8GPN5NVHDJ8ZVXNCW7Q4WBYCV61HCA3PZC2YJD850DT29RHHN7ESR";
-
-  const myOutput = encodeCrock(sha512(decodeCrock(input)));
-
-  t.deepEqual(myOutput, output);
-});
-
-test("taler-exchange-tvg ecdhe key", (t) => {
-  const priv1 = "X4T4N0M8PVQXQEBW2BA7049KFSM7J437NSDFC6GDNM3N5J9367A0";
-  const pub1 = "M997P494MS6A95G1P0QYWW2VNPSHSX5Q6JBY5B9YMNYWP0B50X3G";
-  const priv2 = "14A0MMQ64DCV8HE0CS3WBC9DHFJAHXRGV7NEARFJPC5R5E1697E0";
-  const skm =
-    "NXRY2YCY7H9B6KM928ZD55WG964G59YR0CPX041DYXKBZZ85SAWNPQ8B30QRM5FMHYCXJAN0EAADJYWEF1X3PAC2AJN28626TR5A6AR";
-
-  const myPub1 = nacl.scalarMult_base(decodeCrock(priv1));
-  t.deepEqual(encodeCrock(myPub1), pub1);
-
-  const mySkm = nacl.hash(
-    nacl.scalarMult(decodeCrock(priv2), decodeCrock(pub1)),
-  );
-  t.deepEqual(encodeCrock(mySkm), skm);
-});
-
-test("taler-exchange-tvg eddsa key", (t) => {
-  const priv = "9TM70AKDTS57AWY9JK2J4TMBTMW6K62WHHGZWYDG0VM5ABPZKD40";
-  const pub = "8GSJZ649T2PXMKZC01Y4ANNBE7MF14QVK9SQEC4E46ZHKCVG8AS0";
-
-  const pair = nacl.sign_keyPair_fromSeed(decodeCrock(priv));
-  t.deepEqual(encodeCrock(pair.publicKey), pub);
-});
-
-test("taler-exchange-tvg kdf", (t) => {
-  const salt = "94KPT83PCNS7J83KC5P78Y8";
-  const ikm = "94KPT83MD1JJ0WV5CDS6AX10D5Q70XBM41NPAY90DNGQ8SBJD5GPR";
-  const ctx =
-    "94KPT83141HPYVKMCNW78833D1TPWTSC41GPRWVF41NPWVVQDRG62WS04XMPWSKF4WG6JVH0EHM6A82J8S1G";
-  const outLen = 64;
-  const out =
-    "GTMR4QT05Z9WF5HKVG0WK9RPXGHSMHJNW377G9GJXCA8B0FEKPF4D27RJMSJZYWSQNTBJ5EYVV7ZW18B48Z0JVJJ80RHB706Y96Q358";
-
-  const myOut = kdf(
-    outLen,
-    decodeCrock(ikm),
-    decodeCrock(salt),
-    decodeCrock(ctx),
-  );
-
-  t.deepEqual(encodeCrock(myOut), out);
-});
-
-test("taler-exchange-tvg eddsa_ecdh", (t) => {
-  const priv_ecdhe = "4AFZWMSGTVCHZPQ0R81NWXDCK4N58G7SDBBE5KXE080Y50370JJG";
-  const pub_ecdhe = "FXFN5GPAFTKVPWJDPVXQ87167S8T82T5ZV8CDYC0NH2AE14X0M30";
-  const priv_eddsa = "1KG54M8T3X8BSFSZXCR3SQBSR7Y9P53NX61M864S7TEVMJ2XVPF0";
-  const pub_eddsa = "7BXWKG6N224C57RTDV8XEAHR108HG78NMA995BE8QAT5GC1S7E80";
-  const key_material =
-    "PKZ42Z56SVK2796HG1QYBRJ6ZQM2T9QGA3JA4AAZ8G7CWK9FPX175Q9JE5P0ZAX3HWWPHAQV4DPCK10R9X3SAXHRV0WF06BHEC2ZTKR";
-
-  const myEcdhePub = ecdheGetPublic(decodeCrock(priv_ecdhe));
-  t.deepEqual(encodeCrock(myEcdhePub), pub_ecdhe);
-
-  const myEddsaPub = eddsaGetPublic(decodeCrock(priv_eddsa));
-  t.deepEqual(encodeCrock(myEddsaPub), pub_eddsa);
-
-  const myKm1 = keyExchangeEddsaEcdhe(
-    decodeCrock(priv_eddsa),
-    decodeCrock(pub_ecdhe),
-  );
-  t.deepEqual(encodeCrock(myKm1), key_material);
-
-  const myKm2 = keyExchangeEcdheEddsa(
-    decodeCrock(priv_ecdhe),
-    decodeCrock(pub_eddsa),
-  );
-  t.deepEqual(encodeCrock(myKm2), key_material);
-});
-
-test("taler-exchange-tvg blind signing", (t) => {
-  const messageHash =
-    "TT1R28D79EJEJ9PC35AQS35CCG85DSXSZ508MV2HS2FN4ME6AHESZX5WP485R8A75KG53FN6F1YNW95008663TKAPWB81420VG17BY8";
-  const rsaPublicKey =
-    "040000Y62RSDDKZXTE7GDVA302ZZR0DY224RSDT6WDWR1XGT8E3YG80XV6TMT3ZCNP8XC84W0N6MSZ0EF8S3YB1JJ2AXY9JQZW3MCA0CG38ER4YE2RY4Q2666DEZSNKT29V6CKZVCDHXSAKY8W6RPEKEQ5YSBYQK23MRK3CQTNNJXQFDKEMRHEC5Y6RDHAC5RJCV8JJ8BF18VPKZ2Q7BB14YN1HJ22H8EZGW0RDGG9YPEWA9183BHEQ651PP81J514TJ9K8DH23AJ50SZFNS429HQ390VRP5E4MQ7RK7ZJXXTSZAQSRTC0QF28P23PD37C17QFQB0BBC54MB8MDH7RW104STG6VN0J22P39JP4EXPVGK5D9AX5W869MDQ6SRD42ZYK5H20227Q8CCWSQ6C3132WP0F0H04002";
-  const bks = "7QD31RPJH0W306RJWBRG646Z2FTA1F89BKSXPDAG7YM0N5Z0B610";
-  const bm =
-    "GA8PC6YH9VF5MW6P2DKTV0W0ZTQ24DZ9EAN5QH3SQXRH7SCZHFMM21ZY05F0BS7MFW8TSEP4SEB280BYP5ACHNQWGE10PCXDDMK7ECXJDPHJ224JBCV4KYNWG6NBR3SC9HK8FXVFX55GFBJFNQHNZGEB8DB0KN9MSVYFDXN45KPMSNY03FVX0JZ0R3YG9XQ8XVGB5SYZCF0QSHWH61MT0Q10CZD2V114BT64D3GD86EJ5S9WBMYG51SDN5CSKEJ734YAJ4HCEWW0RDN8GXA9ZMA18SKVW8T3TTBCPJRF2Y77JGQ08GF35SYGA2HWFV1HGVS8RCTER6GB9SZHRG4T7919H9C1KFAP50G2KSV6X42D6KNJANNSGKQH649TJ00YJQXPHPNFBSS198RY2C243D4B4W";
-  const bs =
-    "5VW0MS5PRBA3W8TPATSTDA2YRFQM1Z7F2DWKQ8ATMZYYY768Q3STZ3HGNVYQ6JB5NKP80G5HGE58616FPA70SX9PTW7EN8EJ23E26FASBWZBP8E2RWQQ5E0F72B2PWRP5ZCA2J3AB3F6P86XK4PZYT64RF94MDGHY0GSDSSBH5YSFB3VM0KVXA52H2Y2G9S85AVCSD3BTMHQRF5BJJ8JE00T4GK70PSTVCGMRKRNA7DGW7GD2F35W55AXF7R2YJC8PAGNSJYWKC3PC75A5N8H69K299AK5PM3CDDHNS4BMRNGF7K49CR4ZBFRXDAWMB3X6T05Q4NKSG0F1KP5JA0XBMF2YJK7KEPRD1EWCHJE44T9YXBTK4W9CV77X7Z9P407ZC6YB3M2ARANZXHJKSM3XC33M";
-  const sig =
-    "PFT6WQJGCM9DE6264DJS6RMG4XDMCDBJKZGSXAF3BEXWZ979Q13NETKK05S1YV91CX3Y034FSS86SSHZTTE8097RRESQP52EKFGTWJXKHZJEQJ49YHMBNQDHW4CFBJECNJSV2PMHWVGXV7HB84R6P0S3ES559HWQX01Q9MYDEGRNHKW87QR2BNSG951D5NQGAKEJ2SSJBE18S6WYAC24FAP8TT8ANECH5371J0DJY0YR0VWAFWVJDV8XQSFXWMJ80N3A80SPSHPYJY3WZZXW63WQ46WHYY56ZSNE5G1RZ5CR0XYV2ECKPM8R0FS58EV16WTRAM1ABBFVNAT3CAEFAZCWP3XHPVBQY5NZVTD5QS2Q8SKJQ2XB30E11CWDN9KTV5CBK4DN72EVG73F3W3BATAKHG";
-
-  const myBm = rsaBlind(
-    decodeCrock(messageHash),
-    decodeCrock(bks),
-    decodeCrock(rsaPublicKey),
-  );
-  t.deepEqual(encodeCrock(myBm), bm);
-
-  const mySig = rsaUnblind(
-    decodeCrock(bs),
-    decodeCrock(rsaPublicKey),
-    decodeCrock(bks),
-  );
-  t.deepEqual(encodeCrock(mySig), sig);
-
-  const v = rsaVerify(
-    decodeCrock(messageHash),
-    decodeCrock(sig),
-    decodeCrock(rsaPublicKey),
-  );
-  t.true(v);
-});
-
-test("incremental hashing #1", (t) => {
-  const n = 1024;
-  const d = nacl.randomBytes(n);
-
-  const h1 = nacl.hash(d);
-  const h2 = new nacl.HashState().update(d).finish();
-
-  const s = new nacl.HashState();
-  for (let i = 0; i < n; i++) {
-    const b = new Uint8Array(1);
-    b[0] = d[i];
-    s.update(b);
-  }
-
-  const h3 = s.finish();
-
-  t.deepEqual(encodeCrock(h1), encodeCrock(h2));
-  t.deepEqual(encodeCrock(h1), encodeCrock(h3));
-});
-
-test("incremental hashing #2", (t) => {
-  const n = 10;
-  const d = nacl.randomBytes(n);
-
-  const h1 = nacl.hash(d);
-  const h2 = new nacl.HashState().update(d).finish();
-  const s = new nacl.HashState();
-  for (let i = 0; i < n; i++) {
-    const b = new Uint8Array(1);
-    b[0] = d[i];
-    s.update(b);
-  }
-
-  const h3 = s.finish();
-
-  t.deepEqual(encodeCrock(h1), encodeCrock(h3));
-  t.deepEqual(encodeCrock(h1), encodeCrock(h2));
-});
diff --git a/src/crypto/talerCrypto.ts b/src/crypto/talerCrypto.ts
deleted file mode 100644
index 457009a04..000000000
--- a/src/crypto/talerCrypto.ts
+++ /dev/null
@@ -1,376 +0,0 @@
-/*
- This file is part of GNU Taler
- (C) 2019 GNUnet e.V.
-
- GNU Taler is free software; you can redistribute it and/or modify it under the
- terms of the GNU General Public License as published by the Free Software
- Foundation; either version 3, or (at your option) any later version.
-
- GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
- WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
- A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License along with
- GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
- */
-
-/**
- * Native implementation of GNU Taler crypto.
- */
-
-import * as nacl from "./primitives/nacl-fast";
-import bigint from "big-integer";
-import { kdf } from "./primitives/kdf";
-
-export function getRandomBytes(n: number): Uint8Array {
-  return nacl.randomBytes(n);
-}
-
-const encTable = "0123456789ABCDEFGHJKMNPQRSTVWXYZ";
-
-class EncodingError extends Error {
-  constructor() {
-    super("Encoding error");
-    Object.setPrototypeOf(this, EncodingError.prototype);
-  }
-}
-
-function getValue(chr: string): number {
-  let a = chr;
-  switch (chr) {
-    case "O":
-    case "o":
-      a = "0;";
-      break;
-    case "i":
-    case "I":
-    case "l":
-    case "L":
-      a = "1";
-      break;
-    case "u":
-    case "U":
-      a = "V";
-  }
-
-  if (a >= "0" && a <= "9") {
-    return a.charCodeAt(0) - "0".charCodeAt(0);
-  }
-
-  if (a >= "a" && a <= "z") a = a.toUpperCase();
-  let dec = 0;
-  if (a >= "A" && a <= "Z") {
-    if ("I" < a) dec++;
-    if ("L" < a) dec++;
-    if ("O" < a) dec++;
-    if ("U" < a) dec++;
-    return a.charCodeAt(0) - "A".charCodeAt(0) + 10 - dec;
-  }
-  throw new EncodingError();
-}
-
-export function encodeCrock(data: ArrayBuffer): string {
-  const dataBytes = new Uint8Array(data);
-  let sb = "";
-  const size = data.byteLength;
-  let bitBuf = 0;
-  let numBits = 0;
-  let pos = 0;
-  while (pos < size || numBits > 0) {
-    if (pos < size && numBits < 5) {
-      const d = dataBytes[pos++];
-      bitBuf = (bitBuf << 8) | d;
-      numBits += 8;
-    }
-    if (numBits < 5) {
-      // zero-padding
-      bitBuf = bitBuf << (5 - numBits);
-      numBits = 5;
-    }
-    const v = (bitBuf >>> (numBits - 5)) & 31;
-    sb += encTable[v];
-    numBits -= 5;
-  }
-  return sb;
-}
-
-export function decodeCrock(encoded: string): Uint8Array {
-  const size = encoded.length;
-  let bitpos = 0;
-  let bitbuf = 0;
-  let readPosition = 0;
-  const outLen = Math.floor((size * 5) / 8);
-  const out = new Uint8Array(outLen);
-  let outPos = 0;
-
-  while (readPosition < size || bitpos > 0) {
-    if (readPosition < size) {
-      const v = getValue(encoded[readPosition++]);
-      bitbuf = (bitbuf << 5) | v;
-      bitpos += 5;
-    }
-    while (bitpos >= 8) {
-      const d = (bitbuf >>> (bitpos - 8)) & 0xff;
-      out[outPos++] = d;
-      bitpos -= 8;
-    }
-    if (readPosition == size && bitpos > 0) {
-      bitbuf = (bitbuf << (8 - bitpos)) & 0xff;
-      bitpos = bitbuf == 0 ? 0 : 8;
-    }
-  }
-  return out;
-}
-
-export function eddsaGetPublic(eddsaPriv: Uint8Array): Uint8Array {
-  const pair = nacl.sign_keyPair_fromSeed(eddsaPriv);
-  return pair.publicKey;
-}
-
-export function ecdheGetPublic(ecdhePriv: Uint8Array): Uint8Array {
-  return nacl.scalarMult_base(ecdhePriv);
-}
-
-export function keyExchangeEddsaEcdhe(
-  eddsaPriv: Uint8Array,
-  ecdhePub: Uint8Array,
-): Uint8Array {
-  const ph = nacl.hash(eddsaPriv);
-  const a = new Uint8Array(32);
-  for (let i = 0; i < 32; i++) {
-    a[i] = ph[i];
-  }
-  const x = nacl.scalarMult(a, ecdhePub);
-  return nacl.hash(x);
-}
-
-export function keyExchangeEcdheEddsa(
-  ecdhePriv: Uint8Array,
-  eddsaPub: Uint8Array,
-): Uint8Array {
-  const curve25519Pub = nacl.sign_ed25519_pk_to_curve25519(eddsaPub);
-  const x = nacl.scalarMult(ecdhePriv, curve25519Pub);
-  return nacl.hash(x);
-}
-
-interface RsaPub {
-  N: bigint.BigInteger;
-  e: bigint.BigInteger;
-}
-
-interface RsaBlindingKey {
-  r: bigint.BigInteger;
-}
-
-/**
- * KDF modulo a big integer.
- */
-function kdfMod(
-  n: bigint.BigInteger,
-  ikm: Uint8Array,
-  salt: Uint8Array,
-  info: Uint8Array,
-): bigint.BigInteger {
-  const nbits = n.bitLength().toJSNumber();
-  const buflen = Math.floor((nbits - 1) / 8 + 1);
-  const mask = (1 << (8 - (buflen * 8 - nbits))) - 1;
-  let counter = 0;
-  while (true) {
-    const ctx = new Uint8Array(info.byteLength + 2);
-    ctx.set(info, 0);
-    ctx[ctx.length - 2] = (counter >>> 8) & 0xff;
-    ctx[ctx.length - 1] = counter & 0xff;
-    const buf = kdf(buflen, ikm, salt, ctx);
-    const arr = Array.from(buf);
-    arr[0] = arr[0] & mask;
-    const r = bigint.fromArray(arr, 256, false);
-    if (r.lt(n)) {
-      return r;
-    }
-    counter++;
-  }
-}
-
-export function stringToBytes(s: string): Uint8Array {
-  const te = new TextEncoder();
-  return te.encode(s);
-}
-
-function loadBigInt(arr: Uint8Array): bigint.BigInteger {
-  return bigint.fromArray(Array.from(arr), 256, false);
-}
-
-function rsaBlindingKeyDerive(
-  rsaPub: RsaPub,
-  bks: Uint8Array,
-): bigint.BigInteger {
-  const salt = stringToBytes("Blinding KDF extrator HMAC key");
-  const info = stringToBytes("Blinding KDF");
-  return kdfMod(rsaPub.N, bks, salt, info);
-}
-
-/*
- * Test for malicious RSA key.
- *
- * Assuming n is an RSA modulous and r is generated using a call to
- * GNUNET_CRYPTO_kdf_mod_mpi, if gcd(r,n) != 1 then n must be a
- * malicious RSA key designed to deanomize the user.
- *
- * @param r KDF result
- * @param n RSA modulus of the public key
- */
-function rsaGcdValidate(r: bigint.BigInteger, n: bigint.BigInteger): void {
-  const t = bigint.gcd(r, n);
-  if (!t.equals(bigint.one)) {
-    throw Error("malicious RSA public key");
-  }
-}
-
-function rsaFullDomainHash(hm: Uint8Array, rsaPub: RsaPub): bigint.BigInteger {
-  const info = stringToBytes("RSA-FDA FTpsW!");
-  const salt = rsaPubEncode(rsaPub);
-  const r = kdfMod(rsaPub.N, hm, salt, info);
-  rsaGcdValidate(r, rsaPub.N);
-  return r;
-}
-
-function rsaPubDecode(rsaPub: Uint8Array): RsaPub {
-  const modulusLength = (rsaPub[0] << 8) | rsaPub[1];
-  const exponentLength = (rsaPub[2] << 8) | rsaPub[3];
-  if (4 + exponentLength + modulusLength != rsaPub.length) {
-    throw Error("invalid RSA public key (format wrong)");
-  }
-  const modulus = rsaPub.slice(4, 4 + modulusLength);
-  const exponent = rsaPub.slice(
-    4 + modulusLength,
-    4 + modulusLength + exponentLength,
-  );
-  const res = {
-    N: loadBigInt(modulus),
-    e: loadBigInt(exponent),
-  };
-  return res;
-}
-
-function rsaPubEncode(rsaPub: RsaPub): Uint8Array {
-  const mb = rsaPub.N.toArray(256).value;
-  const eb = rsaPub.e.toArray(256).value;
-  const out = new Uint8Array(4 + mb.length + eb.length);
-  out[0] = (mb.length >>> 8) & 0xff;
-  out[1] = mb.length & 0xff;
-  out[2] = (eb.length >>> 8) & 0xff;
-  out[3] = eb.length & 0xff;
-  out.set(mb, 4);
-  out.set(eb, 4 + mb.length);
-  return out;
-}
-
-export function rsaBlind(
-  hm: Uint8Array,
-  bks: Uint8Array,
-  rsaPubEnc: Uint8Array,
-): Uint8Array {
-  const rsaPub = rsaPubDecode(rsaPubEnc);
-  const data = rsaFullDomainHash(hm, rsaPub);
-  const r = rsaBlindingKeyDerive(rsaPub, bks);
-  const r_e = r.modPow(rsaPub.e, rsaPub.N);
-  const bm = r_e.multiply(data).mod(rsaPub.N);
-  return new Uint8Array(bm.toArray(256).value);
-}
-
-export function rsaUnblind(
-  sig: Uint8Array,
-  rsaPubEnc: Uint8Array,
-  bks: Uint8Array,
-): Uint8Array {
-  const rsaPub = rsaPubDecode(rsaPubEnc);
-  const blinded_s = loadBigInt(sig);
-  const r = rsaBlindingKeyDerive(rsaPub, bks);
-  const r_inv = r.modInv(rsaPub.N);
-  const s = blinded_s.multiply(r_inv).mod(rsaPub.N);
-  return new Uint8Array(s.toArray(256).value);
-}
-
-export function rsaVerify(
-  hm: Uint8Array,
-  rsaSig: Uint8Array,
-  rsaPubEnc: Uint8Array,
-): boolean {
-  const rsaPub = rsaPubDecode(rsaPubEnc);
-  const d = rsaFullDomainHash(hm, rsaPub);
-  const sig = loadBigInt(rsaSig);
-  const sig_e = sig.modPow(rsaPub.e, rsaPub.N);
-  return sig_e.equals(d);
-}
-
-export interface EddsaKeyPair {
-  eddsaPub: Uint8Array;
-  eddsaPriv: Uint8Array;
-}
-
-export interface EcdheKeyPair {
-  ecdhePub: Uint8Array;
-  ecdhePriv: Uint8Array;
-}
-
-export function createEddsaKeyPair(): EddsaKeyPair {
-  const eddsaPriv = nacl.randomBytes(32);
-  const eddsaPub = eddsaGetPublic(eddsaPriv);
-  return { eddsaPriv, eddsaPub };
-}
-
-export function createEcdheKeyPair(): EcdheKeyPair {
-  const ecdhePriv = nacl.randomBytes(32);
-  const ecdhePub = ecdheGetPublic(ecdhePriv);
-  return { ecdhePriv, ecdhePub };
-}
-
-export function createBlindingKeySecret(): Uint8Array {
-  return nacl.randomBytes(32);
-}
-
-export function hash(d: Uint8Array): Uint8Array {
-  return nacl.hash(d);
-}
-
-export function eddsaSign(msg: Uint8Array, eddsaPriv: Uint8Array): Uint8Array {
-  const pair = nacl.sign_keyPair_fromSeed(eddsaPriv);
-  return nacl.sign_detached(msg, pair.secretKey);
-}
-
-export function eddsaVerify(
-  msg: Uint8Array,
-  sig: Uint8Array,
-  eddsaPub: Uint8Array,
-): boolean {
-  return nacl.sign_detached_verify(msg, sig, eddsaPub);
-}
-
-export function createHashContext(): nacl.HashState {
-  return new nacl.HashState();
-}
-
-export interface FreshCoin {
-  coinPub: Uint8Array;
-  coinPriv: Uint8Array;
-  bks: Uint8Array;
-}
-
-export function setupRefreshPlanchet(
-  secretSeed: Uint8Array,
-  coinNumber: number,
-): FreshCoin {
-  const info = stringToBytes("taler-coin-derivation");
-  const saltArrBuf = new ArrayBuffer(4);
-  const salt = new Uint8Array(saltArrBuf);
-  const saltDataView = new DataView(saltArrBuf);
-  saltDataView.setUint32(0, coinNumber);
-  const out = kdf(64, secretSeed, salt, info);
-  const coinPriv = out.slice(0, 32);
-  const bks = out.slice(32, 64);
-  return {
-    bks,
-    coinPriv,
-    coinPub: eddsaGetPublic(coinPriv),
-  };
-}
diff --git a/src/crypto/workers/browserWorkerEntry.ts b/src/crypto/workers/browserWorkerEntry.ts
deleted file mode 100644
index 87cb0b28b..000000000
--- a/src/crypto/workers/browserWorkerEntry.ts
+++ /dev/null
@@ -1,74 +0,0 @@
-/*
- This file is part of TALER
- (C) 2016 GNUnet e.V.
-
- TALER is free software; you can redistribute it and/or modify it under the
- terms of the GNU General Public License as published by the Free Software
- Foundation; either version 3, or (at your option) any later version.
-
- TALER is distributed in the hope that it will be useful, but WITHOUT ANY
- WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
- A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License along with
- TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
-*/
-
-/**
- * Web worker for crypto operations.
- */
-
-/**
- * Imports.
- */
-
-import { CryptoImplementation } from "./cryptoImplementation";
-
-const worker: Worker = (self as any) as Worker;
-
-async function handleRequest(
-  operation: string,
-  id: number,
-  args: string[],
-): Promise<void> {
-  const impl = new CryptoImplementation();
-
-  if (!(operation in impl)) {
-    console.error(`crypto operation '${operation}' not found`);
-    return;
-  }
-
-  try {
-    const result = (impl as any)[operation](...args);
-    worker.postMessage({ result, id });
-  } catch (e) {
-    console.log("error during operation", e);
-    return;
-  }
-}
-
-worker.onmessage = (msg: MessageEvent) => {
-  const args = msg.data.args;
-  if (!Array.isArray(args)) {
-    console.error("args must be array");
-    return;
-  }
-  const id = msg.data.id;
-  if (typeof id !== "number") {
-    console.error("RPC id must be number");
-    return;
-  }
-  const operation = msg.data.operation;
-  if (typeof operation !== "string") {
-    console.error("RPC operation must be string");
-    return;
-  }
-
-  if (CryptoImplementation.enableTracing) {
-    console.log("onmessage with", operation);
-  }
-
-  handleRequest(operation, id, args).catch((e) => {
-    console.error("error in browsere worker", e);
-  });
-};
diff --git a/src/crypto/workers/cryptoApi.ts b/src/crypto/workers/cryptoApi.ts
deleted file mode 100644
index 5e922ec02..000000000
--- a/src/crypto/workers/cryptoApi.ts
+++ /dev/null
@@ -1,467 +0,0 @@
-/*
- This file is part of TALER
- (C) 2016 GNUnet e.V.
-
- TALER is free software; you can redistribute it and/or modify it under the
- terms of the GNU General Public License as published by the Free Software
- Foundation; either version 3, or (at your option) any later version.
-
- TALER is distributed in the hope that it will be useful, but WITHOUT ANY
- WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
- A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License along with
- TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
- */
-
-/**
- * API to access the Taler crypto worker thread.
- * @author Florian Dold
- */
-
-/**
- * Imports.
- */
-import { AmountJson } from "../../util/amounts";
-
-import {
-  CoinRecord,
-  DenominationRecord,
-  RefreshSessionRecord,
-  TipPlanchet,
-  WireFee,
-  DenominationSelectionInfo,
-} from "../../types/dbTypes";
-
-import { CryptoWorker } from "./cryptoWorker";
-
-import { RecoupRequest, CoinDepositPermission } from "../../types/talerTypes";
-
-import {
-  BenchmarkResult,
-  PlanchetCreationResult,
-  PlanchetCreationRequest,
-  DepositInfo,
-} from "../../types/walletTypes";
-
-import * as timer from "../../util/timer";
-import { Logger } from "../../util/logging";
-
-const logger = new Logger("cryptoApi.ts");
-
-/**
- * State of a crypto worker.
- */
-interface WorkerState {
-  /**
-   * The actual worker thread.
-   */
-  w: CryptoWorker | null;
-
-  /**
-   * Work we're currently executing or null if not busy.
-   */
-  currentWorkItem: WorkItem | null;
-
-  /**
-   * Timer to terminate the worker if it's not busy enough.
-   */
-  terminationTimerHandle: timer.TimerHandle | null;
-}
-
-interface WorkItem {
-  operation: string;
-  args: any[];
-  resolve: any;
-  reject: any;
-
-  /**
-   * Serial id to identify a matching response.
-   */
-  rpcId: number;
-
-  /**
-   * Time when the work was submitted to a (non-busy) worker thread.
-   */
-  startTime: number;
-}
-
-/**
- * Number of different priorities. Each priority p
- * must be 0 <= p < NUM_PRIO.
- */
-const NUM_PRIO = 5;
-
-export interface CryptoWorkerFactory {
-  /**
-   * Start a new worker.
-   */
-  startWorker(): CryptoWorker;
-
-  /**
-   * Query the number of workers that should be
-   * run at the same time.
-   */
-  getConcurrency(): number;
-}
-
-export class BrowserCryptoWorkerFactory implements CryptoWorkerFactory {
-  startWorker(): CryptoWorker {
-    const workerCtor = Worker;
-    const workerPath = "/browserWorkerEntry.js";
-    return new workerCtor(workerPath) as CryptoWorker;
-  }
-
-  getConcurrency(): number {
-    let concurrency = 2;
-    try {
-      // only works in the browser
-      // tslint:disable-next-line:no-string-literal
-      concurrency = (navigator as any)["hardwareConcurrency"];
-      concurrency = Math.max(1, Math.ceil(concurrency / 2));
-    } catch (e) {
-      concurrency = 2;
-    }
-    return concurrency;
-  }
-}
-
-/**
- * Crypto API that interfaces manages a background crypto thread
- * for the execution of expensive operations.
- */
-export class CryptoApi {
-  private nextRpcId = 1;
-  private workers: WorkerState[];
-  private workQueues: WorkItem[][];
-
-  private workerFactory: CryptoWorkerFactory;
-
-  /**
-   * Number of busy workers.
-   */
-  private numBusy = 0;
-
-  /**
-   * Did we stop accepting new requests?
-   */
-  private stopped = false;
-
-  /**
-   * Terminate all worker threads.
-   */
-  terminateWorkers(): void {
-    for (const worker of this.workers) {
-      if (worker.w) {
-        logger.trace("terminating worker");
-        worker.w.terminate();
-        if (worker.terminationTimerHandle) {
-          worker.terminationTimerHandle.clear();
-          worker.terminationTimerHandle = null;
-        }
-        if (worker.currentWorkItem) {
-          worker.currentWorkItem.reject(Error("explicitly terminated"));
-          worker.currentWorkItem = null;
-        }
-        worker.w = null;
-      }
-    }
-  }
-
-  stop(): void {
-    this.terminateWorkers();
-    this.stopped = true;
-  }
-
-  /**
-   * Start a worker (if not started) and set as busy.
-   */
-  wake(ws: WorkerState, work: WorkItem): void {
-    if (this.stopped) {
-      logger.trace("cryptoApi is stopped");
-      return;
-    }
-    if (ws.currentWorkItem !== null) {
-      throw Error("assertion failed");
-    }
-    ws.currentWorkItem = work;
-    this.numBusy++;
-    let worker: CryptoWorker;
-    if (!ws.w) {
-      worker = this.workerFactory.startWorker();
-      worker.onmessage = (m: MessageEvent) => this.handleWorkerMessage(ws, m);
-      worker.onerror = (e: ErrorEvent) => this.handleWorkerError(ws, e);
-      ws.w = worker;
-    } else {
-      worker = ws.w;
-    }
-
-    const msg: any = {
-      args: work.args,
-      id: work.rpcId,
-      operation: work.operation,
-    };
-    this.resetWorkerTimeout(ws);
-    work.startTime = timer.performanceNow();
-    setTimeout(() => worker.postMessage(msg), 0);
-  }
-
-  resetWorkerTimeout(ws: WorkerState): void {
-    if (ws.terminationTimerHandle !== null) {
-      ws.terminationTimerHandle.clear();
-      ws.terminationTimerHandle = null;
-    }
-    const destroy = (): void => {
-      // terminate worker if it's idle
-      if (ws.w && ws.currentWorkItem === null) {
-        ws.w.terminate();
-        ws.w = null;
-      }
-    };
-    ws.terminationTimerHandle = timer.after(15 * 1000, destroy);
-  }
-
-  handleWorkerError(ws: WorkerState, e: ErrorEvent): void {
-    if (ws.currentWorkItem) {
-      console.error(
-        `error in worker during ${ws.currentWorkItem.operation}`,
-        e,
-      );
-    } else {
-      console.error("error in worker", e);
-    }
-    console.error(e.message);
-    try {
-      if (ws.w) {
-        ws.w.terminate();
-        ws.w = null;
-      }
-    } catch (e) {
-      console.error(e);
-    }
-    if (ws.currentWorkItem !== null) {
-      ws.currentWorkItem.reject(e);
-      ws.currentWorkItem = null;
-      this.numBusy--;
-    }
-    this.findWork(ws);
-  }
-
-  private findWork(ws: WorkerState): void {
-    // try to find more work for this worker
-    for (let i = 0; i < NUM_PRIO; i++) {
-      const q = this.workQueues[NUM_PRIO - i - 1];
-      if (q.length !== 0) {
-        const work: WorkItem | undefined = q.shift();
-        if (!work) {
-          continue;
-        }
-        this.wake(ws, work);
-        return;
-      }
-    }
-  }
-
-  handleWorkerMessage(ws: WorkerState, msg: MessageEvent): void {
-    const id = msg.data.id;
-    if (typeof id !== "number") {
-      console.error("rpc id must be number");
-      return;
-    }
-    const currentWorkItem = ws.currentWorkItem;
-    ws.currentWorkItem = null;
-    this.numBusy--;
-    this.findWork(ws);
-    if (!currentWorkItem) {
-      console.error("unsolicited response from worker");
-      return;
-    }
-    if (id !== currentWorkItem.rpcId) {
-      console.error(`RPC with id ${id} has no registry entry`);
-      return;
-    }
-
-    currentWorkItem.resolve(msg.data.result);
-  }
-
-  constructor(workerFactory: CryptoWorkerFactory) {
-    this.workerFactory = workerFactory;
-    this.workers = new Array<WorkerState>(workerFactory.getConcurrency());
-
-    for (let i = 0; i < this.workers.length; i++) {
-      this.workers[i] = {
-        currentWorkItem: null,
-        terminationTimerHandle: null,
-        w: null,
-      };
-    }
-
-    this.workQueues = [];
-    for (let i = 0; i < NUM_PRIO; i++) {
-      this.workQueues.push([]);
-    }
-  }
-
-  private doRpc<T>(
-    operation: string,
-    priority: number,
-    ...args: any[]
-  ): Promise<T> {
-    const p: Promise<T> = new Promise<T>((resolve, reject) => {
-      const rpcId = this.nextRpcId++;
-      const workItem: WorkItem = {
-        operation,
-        args,
-        resolve,
-        reject,
-        rpcId,
-        startTime: 0,
-      };
-
-      if (this.numBusy === this.workers.length) {
-        const q = this.workQueues[priority];
-        if (!q) {
-          throw Error("assertion failed");
-        }
-        this.workQueues[priority].push(workItem);
-        return;
-      }
-
-      for (const ws of this.workers) {
-        if (ws.currentWorkItem !== null) {
-          continue;
-        }
-        this.wake(ws, workItem);
-        return;
-      }
-
-      throw Error("assertion failed");
-    });
-
-    return p;
-  }
-
-  createPlanchet(
-    req: PlanchetCreationRequest,
-  ): Promise<PlanchetCreationResult> {
-    return this.doRpc<PlanchetCreationResult>("createPlanchet", 1, req);
-  }
-
-  createTipPlanchet(denom: DenominationRecord): Promise<TipPlanchet> {
-    return this.doRpc<TipPlanchet>("createTipPlanchet", 1, denom);
-  }
-
-  hashString(str: string): Promise<string> {
-    return this.doRpc<string>("hashString", 1, str);
-  }
-
-  hashEncoded(encodedBytes: string): Promise<string> {
-    return this.doRpc<string>("hashEncoded", 1, encodedBytes);
-  }
-
-  isValidDenom(denom: DenominationRecord, masterPub: string): Promise<boolean> {
-    return this.doRpc<boolean>("isValidDenom", 2, denom, masterPub);
-  }
-
-  isValidWireFee(
-    type: string,
-    wf: WireFee,
-    masterPub: string,
-  ): Promise<boolean> {
-    return this.doRpc<boolean>("isValidWireFee", 2, type, wf, masterPub);
-  }
-
-  isValidPaymentSignature(
-    sig: string,
-    contractHash: string,
-    merchantPub: string,
-  ): Promise<boolean> {
-    return this.doRpc<boolean>(
-      "isValidPaymentSignature",
-      1,
-      sig,
-      contractHash,
-      merchantPub,
-    );
-  }
-
-  signDepositPermission(
-    depositInfo: DepositInfo,
-  ): Promise<CoinDepositPermission> {
-    return this.doRpc<CoinDepositPermission>(
-      "signDepositPermission",
-      3,
-      depositInfo,
-    );
-  }
-
-  createEddsaKeypair(): Promise<{ priv: string; pub: string }> {
-    return this.doRpc<{ priv: string; pub: string }>("createEddsaKeypair", 1);
-  }
-
-  rsaUnblind(sig: string, bk: string, pk: string): Promise<string> {
-    return this.doRpc<string>("rsaUnblind", 4, sig, bk, pk);
-  }
-
-  rsaVerify(hm: string, sig: string, pk: string): Promise<boolean> {
-    return this.doRpc<boolean>("rsaVerify", 4, hm, sig, pk);
-  }
-
-  isValidWireAccount(
-    paytoUri: string,
-    sig: string,
-    masterPub: string,
-  ): Promise<boolean> {
-    return this.doRpc<boolean>(
-      "isValidWireAccount",
-      4,
-      paytoUri,
-      sig,
-      masterPub,
-    );
-  }
-
-  createRecoupRequest(coin: CoinRecord): Promise<RecoupRequest> {
-    return this.doRpc<RecoupRequest>("createRecoupRequest", 1, coin);
-  }
-
-  createRefreshSession(
-    exchangeBaseUrl: string,
-    kappa: number,
-    meltCoin: CoinRecord,
-    newCoinDenoms: DenominationSelectionInfo,
-    meltFee: AmountJson,
-  ): Promise<RefreshSessionRecord> {
-    return this.doRpc<RefreshSessionRecord>(
-      "createRefreshSession",
-      4,
-      exchangeBaseUrl,
-      kappa,
-      meltCoin,
-      newCoinDenoms,
-      meltFee,
-    );
-  }
-
-  signCoinLink(
-    oldCoinPriv: string,
-    newDenomHash: string,
-    oldCoinPub: string,
-    transferPub: string,
-    coinEv: string,
-  ): Promise<string> {
-    return this.doRpc<string>(
-      "signCoinLink",
-      4,
-      oldCoinPriv,
-      newDenomHash,
-      oldCoinPub,
-      transferPub,
-      coinEv,
-    );
-  }
-
-  benchmark(repetitions: number): Promise<BenchmarkResult> {
-    return this.doRpc<BenchmarkResult>("benchmark", 1, repetitions);
-  }
-}
diff --git a/src/crypto/workers/cryptoImplementation.ts b/src/crypto/workers/cryptoImplementation.ts
deleted file mode 100644
index 979fe41d8..000000000
--- a/src/crypto/workers/cryptoImplementation.ts
+++ /dev/null
@@ -1,581 +0,0 @@
-/*
- This file is part of GNU Taler
- (C) 2019-2020 Taler Systems SA
-
- TALER is free software; you can redistribute it and/or modify it under the
- terms of the GNU General Public License as published by the Free Software
- Foundation; either version 3, or (at your option) any later version.
-
- TALER is distributed in the hope that it will be useful, but WITHOUT ANY
- WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
- A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License along with
- TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
- */
-
-/**
- * Synchronous implementation of crypto-related functions for the wallet.
- *
- * The functionality is parameterized over an Emscripten environment.
- *
- * @author Florian Dold <dold@taler.net>
- */
-
-/**
- * Imports.
- */
-
-import {
-  CoinRecord,
-  DenominationRecord,
-  RefreshPlanchetRecord,
-  RefreshSessionRecord,
-  TipPlanchet,
-  WireFee,
-  CoinSourceType,
-  DenominationSelectionInfo,
-} from "../../types/dbTypes";
-
-import { CoinDepositPermission, RecoupRequest } from "../../types/talerTypes";
-import {
-  BenchmarkResult,
-  PlanchetCreationResult,
-  PlanchetCreationRequest,
-  DepositInfo,
-} from "../../types/walletTypes";
-import { AmountJson, Amounts } from "../../util/amounts";
-import * as timer from "../../util/timer";
-import {
-  encodeCrock,
-  decodeCrock,
-  createEddsaKeyPair,
-  createBlindingKeySecret,
-  hash,
-  rsaBlind,
-  eddsaVerify,
-  eddsaSign,
-  rsaUnblind,
-  stringToBytes,
-  createHashContext,
-  createEcdheKeyPair,
-  keyExchangeEcdheEddsa,
-  setupRefreshPlanchet,
-  rsaVerify,
-} from "../talerCrypto";
-import { randomBytes } from "../primitives/nacl-fast";
-import { kdf } from "../primitives/kdf";
-import {
-  Timestamp,
-  getTimestampNow,
-  timestampTruncateToSecond,
-} from "../../util/time";
-
-enum SignaturePurpose {
-  WALLET_RESERVE_WITHDRAW = 1200,
-  WALLET_COIN_DEPOSIT = 1201,
-  MASTER_DENOMINATION_KEY_VALIDITY = 1025,
-  MASTER_WIRE_FEES = 1028,
-  MASTER_WIRE_DETAILS = 1030,
-  WALLET_COIN_MELT = 1202,
-  TEST = 4242,
-  MERCHANT_PAYMENT_OK = 1104,
-  WALLET_COIN_RECOUP = 1203,
-  WALLET_COIN_LINK = 1204,
-  EXCHANGE_CONFIRM_RECOUP = 1039,
-  EXCHANGE_CONFIRM_RECOUP_REFRESH = 1041,
-}
-
-function amountToBuffer(amount: AmountJson): Uint8Array {
-  const buffer = new ArrayBuffer(8 + 4 + 12);
-  const dvbuf = new DataView(buffer);
-  const u8buf = new Uint8Array(buffer);
-  const te = new TextEncoder();
-  const curr = te.encode(amount.currency);
-  dvbuf.setBigUint64(0, BigInt(amount.value));
-  dvbuf.setUint32(8, amount.fraction);
-  u8buf.set(curr, 8 + 4);
-
-  return u8buf;
-}
-
-function timestampRoundedToBuffer(ts: Timestamp): Uint8Array {
-  const b = new ArrayBuffer(8);
-  const v = new DataView(b);
-  const tsRounded = timestampTruncateToSecond(ts);
-  const s = BigInt(tsRounded.t_ms) * BigInt(1000);
-  v.setBigUint64(0, s);
-  return new Uint8Array(b);
-}
-
-class SignaturePurposeBuilder {
-  private chunks: Uint8Array[] = [];
-
-  constructor(private purposeNum: number) {}
-
-  put(bytes: Uint8Array): SignaturePurposeBuilder {
-    this.chunks.push(Uint8Array.from(bytes));
-    return this;
-  }
-
-  build(): Uint8Array {
-    let payloadLen = 0;
-    for (const c of this.chunks) {
-      payloadLen += c.byteLength;
-    }
-    const buf = new ArrayBuffer(4 + 4 + payloadLen);
-    const u8buf = new Uint8Array(buf);
-    let p = 8;
-    for (const c of this.chunks) {
-      u8buf.set(c, p);
-      p += c.byteLength;
-    }
-    const dvbuf = new DataView(buf);
-    dvbuf.setUint32(0, payloadLen + 4 + 4);
-    dvbuf.setUint32(4, this.purposeNum);
-    return u8buf;
-  }
-}
-
-function buildSigPS(purposeNum: number): SignaturePurposeBuilder {
-  return new SignaturePurposeBuilder(purposeNum);
-}
-
-export class CryptoImplementation {
-  static enableTracing = false;
-
-  /**
-   * Create a pre-coin of the given denomination to be withdrawn from then given
-   * reserve.
-   */
-  createPlanchet(req: PlanchetCreationRequest): PlanchetCreationResult {
-    const reservePub = decodeCrock(req.reservePub);
-    const reservePriv = decodeCrock(req.reservePriv);
-    const denomPub = decodeCrock(req.denomPub);
-    const coinKeyPair = createEddsaKeyPair();
-    const blindingFactor = createBlindingKeySecret();
-    const coinPubHash = hash(coinKeyPair.eddsaPub);
-    const ev = rsaBlind(coinPubHash, blindingFactor, denomPub);
-    const amountWithFee = Amounts.add(req.value, req.feeWithdraw).amount;
-    const denomPubHash = hash(denomPub);
-    const evHash = hash(ev);
-
-    const withdrawRequest = buildSigPS(SignaturePurpose.WALLET_RESERVE_WITHDRAW)
-      .put(reservePub)
-      .put(amountToBuffer(amountWithFee))
-      .put(denomPubHash)
-      .put(evHash)
-      .build();
-
-    const sig = eddsaSign(withdrawRequest, reservePriv);
-
-    const planchet: PlanchetCreationResult = {
-      blindingKey: encodeCrock(blindingFactor),
-      coinEv: encodeCrock(ev),
-      coinPriv: encodeCrock(coinKeyPair.eddsaPriv),
-      coinPub: encodeCrock(coinKeyPair.eddsaPub),
-      coinValue: req.value,
-      denomPub: encodeCrock(denomPub),
-      denomPubHash: encodeCrock(denomPubHash),
-      reservePub: encodeCrock(reservePub),
-      withdrawSig: encodeCrock(sig),
-      coinEvHash: encodeCrock(evHash),
-    };
-    return planchet;
-  }
-
-  /**
-   * Create a planchet used for tipping, including the private keys.
-   */
-  createTipPlanchet(denom: DenominationRecord): TipPlanchet {
-    const denomPub = decodeCrock(denom.denomPub);
-    const coinKeyPair = createEddsaKeyPair();
-    const blindingFactor = createBlindingKeySecret();
-    const coinPubHash = hash(coinKeyPair.eddsaPub);
-    const ev = rsaBlind(coinPubHash, blindingFactor, denomPub);
-
-    const tipPlanchet: TipPlanchet = {
-      blindingKey: encodeCrock(blindingFactor),
-      coinEv: encodeCrock(ev),
-      coinPriv: encodeCrock(coinKeyPair.eddsaPriv),
-      coinPub: encodeCrock(coinKeyPair.eddsaPub),
-      coinValue: denom.value,
-      denomPub: encodeCrock(denomPub),
-      denomPubHash: encodeCrock(hash(denomPub)),
-    };
-    return tipPlanchet;
-  }
-
-  /**
-   * Create and sign a message to recoup a coin.
-   */
-  createRecoupRequest(coin: CoinRecord): RecoupRequest {
-    const p = buildSigPS(SignaturePurpose.WALLET_COIN_RECOUP)
-      .put(decodeCrock(coin.coinPub))
-      .put(decodeCrock(coin.denomPubHash))
-      .put(decodeCrock(coin.blindingKey))
-      .build();
-
-    const coinPriv = decodeCrock(coin.coinPriv);
-    const coinSig = eddsaSign(p, coinPriv);
-    const paybackRequest: RecoupRequest = {
-      coin_blind_key_secret: coin.blindingKey,
-      coin_pub: coin.coinPub,
-      coin_sig: encodeCrock(coinSig),
-      denom_pub_hash: coin.denomPubHash,
-      denom_sig: coin.denomSig,
-      refreshed: coin.coinSource.type === CoinSourceType.Refresh,
-    };
-    return paybackRequest;
-  }
-
-  /**
-   * Check if a payment signature is valid.
-   */
-  isValidPaymentSignature(
-    sig: string,
-    contractHash: string,
-    merchantPub: string,
-  ): boolean {
-    const p = buildSigPS(SignaturePurpose.MERCHANT_PAYMENT_OK)
-      .put(decodeCrock(contractHash))
-      .build();
-    const sigBytes = decodeCrock(sig);
-    const pubBytes = decodeCrock(merchantPub);
-    return eddsaVerify(p, sigBytes, pubBytes);
-  }
-
-  /**
-   * Check if a wire fee is correctly signed.
-   */
-  isValidWireFee(type: string, wf: WireFee, masterPub: string): boolean {
-    const p = buildSigPS(SignaturePurpose.MASTER_WIRE_FEES)
-      .put(hash(stringToBytes(type + "\0")))
-      .put(timestampRoundedToBuffer(wf.startStamp))
-      .put(timestampRoundedToBuffer(wf.endStamp))
-      .put(amountToBuffer(wf.wireFee))
-      .put(amountToBuffer(wf.closingFee))
-      .build();
-    const sig = decodeCrock(wf.sig);
-    const pub = decodeCrock(masterPub);
-    return eddsaVerify(p, sig, pub);
-  }
-
-  /**
-   * Check if the signature of a denomination is valid.
-   */
-  isValidDenom(denom: DenominationRecord, masterPub: string): boolean {
-    const p = buildSigPS(SignaturePurpose.MASTER_DENOMINATION_KEY_VALIDITY)
-      .put(decodeCrock(masterPub))
-      .put(timestampRoundedToBuffer(denom.stampStart))
-      .put(timestampRoundedToBuffer(denom.stampExpireWithdraw))
-      .put(timestampRoundedToBuffer(denom.stampExpireDeposit))
-      .put(timestampRoundedToBuffer(denom.stampExpireLegal))
-      .put(amountToBuffer(denom.value))
-      .put(amountToBuffer(denom.feeWithdraw))
-      .put(amountToBuffer(denom.feeDeposit))
-      .put(amountToBuffer(denom.feeRefresh))
-      .put(amountToBuffer(denom.feeRefund))
-      .put(decodeCrock(denom.denomPubHash))
-      .build();
-    const sig = decodeCrock(denom.masterSig);
-    const pub = decodeCrock(masterPub);
-    return eddsaVerify(p, sig, pub);
-  }
-
-  isValidWireAccount(
-    paytoUri: string,
-    sig: string,
-    masterPub: string,
-  ): boolean {
-    const h = kdf(
-      64,
-      stringToBytes("exchange-wire-signature"),
-      stringToBytes(paytoUri + "\0"),
-      new Uint8Array(0),
-    );
-    const p = buildSigPS(SignaturePurpose.MASTER_WIRE_DETAILS).put(h).build();
-    return eddsaVerify(p, decodeCrock(sig), decodeCrock(masterPub));
-  }
-
-  /**
-   * Create a new EdDSA key pair.
-   */
-  createEddsaKeypair(): { priv: string; pub: string } {
-    const pair = createEddsaKeyPair();
-    return {
-      priv: encodeCrock(pair.eddsaPriv),
-      pub: encodeCrock(pair.eddsaPub),
-    };
-  }
-
-  /**
-   * Unblind a blindly signed value.
-   */
-  rsaUnblind(blindedSig: string, bk: string, pk: string): string {
-    const denomSig = rsaUnblind(
-      decodeCrock(blindedSig),
-      decodeCrock(pk),
-      decodeCrock(bk),
-    );
-    return encodeCrock(denomSig);
-  }
-
-  /**
-   * Unblind a blindly signed value.
-   */
-  rsaVerify(hm: string, sig: string, pk: string): boolean {
-    return rsaVerify(hash(decodeCrock(hm)), decodeCrock(sig), decodeCrock(pk));
-  }
-
-  /**
-   * Generate updated coins (to store in the database)
-   * and deposit permissions for each given coin.
-   */
-  signDepositPermission(depositInfo: DepositInfo): CoinDepositPermission {
-    const d = buildSigPS(SignaturePurpose.WALLET_COIN_DEPOSIT)
-      .put(decodeCrock(depositInfo.contractTermsHash))
-      .put(decodeCrock(depositInfo.wireInfoHash))
-      .put(decodeCrock(depositInfo.denomPubHash))
-      .put(timestampRoundedToBuffer(depositInfo.timestamp))
-      .put(timestampRoundedToBuffer(depositInfo.refundDeadline))
-      .put(amountToBuffer(depositInfo.spendAmount))
-      .put(amountToBuffer(depositInfo.feeDeposit))
-      .put(decodeCrock(depositInfo.merchantPub))
-      .put(decodeCrock(depositInfo.coinPub))
-      .build();
-    const coinSig = eddsaSign(d, decodeCrock(depositInfo.coinPriv));
-
-    const s: CoinDepositPermission = {
-      coin_pub: depositInfo.coinPub,
-      coin_sig: encodeCrock(coinSig),
-      contribution: Amounts.stringify(depositInfo.spendAmount),
-      h_denom: depositInfo.denomPubHash,
-      exchange_url: depositInfo.exchangeBaseUrl,
-      ub_sig: depositInfo.denomSig,
-    };
-    return s;
-  }
-
-  /**
-   * Create a new refresh session.
-   */
-  createRefreshSession(
-    exchangeBaseUrl: string,
-    kappa: number,
-    meltCoin: CoinRecord,
-    newCoinDenoms: DenominationSelectionInfo,
-    meltFee: AmountJson,
-  ): RefreshSessionRecord {
-    const currency = newCoinDenoms.selectedDenoms[0].denom.value.currency;
-    let valueWithFee = Amounts.getZero(currency);
-
-    for (const ncd of newCoinDenoms.selectedDenoms) {
-      const t = Amounts.add(ncd.denom.value, ncd.denom.feeWithdraw).amount;
-      valueWithFee = Amounts.add(
-        valueWithFee,
-        Amounts.mult(t, ncd.count).amount,
-      ).amount;
-    }
-
-    // melt fee
-    valueWithFee = Amounts.add(valueWithFee, meltFee).amount;
-
-    const sessionHc = createHashContext();
-
-    const transferPubs: string[] = [];
-    const transferPrivs: string[] = [];
-
-    const planchetsForGammas: RefreshPlanchetRecord[][] = [];
-
-    for (let i = 0; i < kappa; i++) {
-      const transferKeyPair = createEcdheKeyPair();
-      sessionHc.update(transferKeyPair.ecdhePub);
-      transferPrivs.push(encodeCrock(transferKeyPair.ecdhePriv));
-      transferPubs.push(encodeCrock(transferKeyPair.ecdhePub));
-    }
-
-    for (const denomSel of newCoinDenoms.selectedDenoms) {
-      for (let i = 0; i < denomSel.count; i++) {
-        const r = decodeCrock(denomSel.denom.denomPub);
-        sessionHc.update(r);
-      }
-    }
-
-    sessionHc.update(decodeCrock(meltCoin.coinPub));
-    sessionHc.update(amountToBuffer(valueWithFee));
-
-    for (let i = 0; i < kappa; i++) {
-      const planchets: RefreshPlanchetRecord[] = [];
-      for (let j = 0; j < newCoinDenoms.selectedDenoms.length; j++) {
-        const denomSel = newCoinDenoms.selectedDenoms[j];
-        for (let k = 0; k < denomSel.count; k++) {
-          const coinNumber = planchets.length;
-          const transferPriv = decodeCrock(transferPrivs[i]);
-          const oldCoinPub = decodeCrock(meltCoin.coinPub);
-          const transferSecret = keyExchangeEcdheEddsa(
-            transferPriv,
-            oldCoinPub,
-          );
-          const fresh = setupRefreshPlanchet(transferSecret, coinNumber);
-          const coinPriv = fresh.coinPriv;
-          const coinPub = fresh.coinPub;
-          const blindingFactor = fresh.bks;
-          const pubHash = hash(coinPub);
-          const denomPub = decodeCrock(denomSel.denom.denomPub);
-          const ev = rsaBlind(pubHash, blindingFactor, denomPub);
-          const planchet: RefreshPlanchetRecord = {
-            blindingKey: encodeCrock(blindingFactor),
-            coinEv: encodeCrock(ev),
-            privateKey: encodeCrock(coinPriv),
-            publicKey: encodeCrock(coinPub),
-          };
-          planchets.push(planchet);
-          sessionHc.update(ev);
-        }
-      }
-      planchetsForGammas.push(planchets);
-    }
-
-    const sessionHash = sessionHc.finish();
-
-    const confirmData = buildSigPS(SignaturePurpose.WALLET_COIN_MELT)
-      .put(sessionHash)
-      .put(decodeCrock(meltCoin.denomPubHash))
-      .put(amountToBuffer(valueWithFee))
-      .put(amountToBuffer(meltFee))
-      .put(decodeCrock(meltCoin.coinPub))
-      .build();
-
-    const confirmSig = eddsaSign(confirmData, decodeCrock(meltCoin.coinPriv));
-
-    let valueOutput = Amounts.getZero(currency);
-    for (const denomSel of newCoinDenoms.selectedDenoms) {
-      const denom = denomSel.denom;
-      for (let i = 0; i < denomSel.count; i++) {
-        valueOutput = Amounts.add(valueOutput, denom.value).amount;
-      }
-    }
-
-    const newDenoms: string[] = [];
-    const newDenomHashes: string[] = [];
-
-    for (const denomSel of newCoinDenoms.selectedDenoms) {
-      const denom = denomSel.denom;
-      for (let i = 0; i < denomSel.count; i++) {
-        newDenoms.push(denom.denomPub);
-        newDenomHashes.push(denom.denomPubHash);
-      }
-    }
-
-    const refreshSession: RefreshSessionRecord = {
-      confirmSig: encodeCrock(confirmSig),
-      exchangeBaseUrl,
-      hash: encodeCrock(sessionHash),
-      meltCoinPub: meltCoin.coinPub,
-      newDenomHashes,
-      newDenoms,
-      norevealIndex: undefined,
-      planchetsForGammas: planchetsForGammas,
-      transferPrivs,
-      transferPubs,
-      amountRefreshOutput: valueOutput,
-      amountRefreshInput: valueWithFee,
-      timestampCreated: getTimestampNow(),
-      finishedTimestamp: undefined,
-      lastError: undefined,
-    };
-
-    return refreshSession;
-  }
-
-  /**
-   * Hash a string including the zero terminator.
-   */
-  hashString(str: string): string {
-    const ts = new TextEncoder();
-    const b = ts.encode(str + "\0");
-    return encodeCrock(hash(b));
-  }
-
-  /**
-   * Hash a crockford encoded value.
-   */
-  hashEncoded(encodedBytes: string): string {
-    return encodeCrock(hash(decodeCrock(encodedBytes)));
-  }
-
-  signCoinLink(
-    oldCoinPriv: string,
-    newDenomHash: string,
-    oldCoinPub: string,
-    transferPub: string,
-    coinEv: string,
-  ): string {
-    const coinEvHash = hash(decodeCrock(coinEv));
-    const coinLink = buildSigPS(SignaturePurpose.WALLET_COIN_LINK)
-      .put(decodeCrock(newDenomHash))
-      .put(decodeCrock(oldCoinPub))
-      .put(decodeCrock(transferPub))
-      .put(coinEvHash)
-      .build();
-    const coinPriv = decodeCrock(oldCoinPriv);
-    const sig = eddsaSign(coinLink, coinPriv);
-    return encodeCrock(sig);
-  }
-
-  benchmark(repetitions: number): BenchmarkResult {
-    let time_hash = 0;
-    for (let i = 0; i < repetitions; i++) {
-      const start = timer.performanceNow();
-      this.hashString("hello world");
-      time_hash += timer.performanceNow() - start;
-    }
-
-    let time_hash_big = 0;
-    for (let i = 0; i < repetitions; i++) {
-      const ba = randomBytes(4096);
-      const start = timer.performanceNow();
-      hash(ba);
-      time_hash_big += timer.performanceNow() - start;
-    }
-
-    let time_eddsa_create = 0;
-    for (let i = 0; i < repetitions; i++) {
-      const start = timer.performanceNow();
-      createEddsaKeyPair();
-      time_eddsa_create += timer.performanceNow() - start;
-    }
-
-    let time_eddsa_sign = 0;
-    const p = randomBytes(4096);
-
-    const pair = createEddsaKeyPair();
-
-    for (let i = 0; i < repetitions; i++) {
-      const start = timer.performanceNow();
-      eddsaSign(p, pair.eddsaPriv);
-      time_eddsa_sign += timer.performanceNow() - start;
-    }
-
-    const sig = eddsaSign(p, pair.eddsaPriv);
-
-    let time_eddsa_verify = 0;
-    for (let i = 0; i < repetitions; i++) {
-      const start = timer.performanceNow();
-      eddsaVerify(p, sig, pair.eddsaPub);
-      time_eddsa_verify += timer.performanceNow() - start;
-    }
-
-    return {
-      repetitions,
-      time: {
-        hash_small: time_hash,
-        hash_big: time_hash_big,
-        eddsa_create: time_eddsa_create,
-        eddsa_sign: time_eddsa_sign,
-        eddsa_verify: time_eddsa_verify,
-      },
-    };
-  }
-}
diff --git a/src/crypto/workers/cryptoWorker.ts b/src/crypto/workers/cryptoWorker.ts
deleted file mode 100644
index 9f3ee6f50..000000000
--- a/src/crypto/workers/cryptoWorker.ts
+++ /dev/null
@@ -1,8 +0,0 @@
-export interface CryptoWorker {
-  postMessage(message: any): void;
-
-  terminate(): void;
-
-  onmessage: ((m: any) => void) | undefined;
-  onerror: ((m: any) => void) | undefined;
-}
diff --git a/src/crypto/workers/nodeThreadWorker.ts b/src/crypto/workers/nodeThreadWorker.ts
deleted file mode 100644
index 6c9dfc569..000000000
--- a/src/crypto/workers/nodeThreadWorker.ts
+++ /dev/null
@@ -1,183 +0,0 @@
-/*
- This file is part of TALER
- (C) 2016 GNUnet e.V.
-
- TALER is free software; you can redistribute it and/or modify it under the
- terms of the GNU General Public License as published by the Free Software
- Foundation; either version 3, or (at your option) any later version.
-
- TALER is distributed in the hope that it will be useful, but WITHOUT ANY
- WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
- A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License along with
- TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
- */
-
-/**
- * Imports
- */
-import { CryptoWorkerFactory } from "./cryptoApi";
-import { CryptoWorker } from "./cryptoWorker";
-import os from "os";
-import { CryptoImplementation } from "./cryptoImplementation";
-
-const f = __filename;
-
-const workerCode = `
-  // Try loading the glue library for Android
-  try {
-    require("akono");
-  } catch (e) {
-    // Probably we're not on Android ...
-  }
-  const worker_threads = require('worker_threads');
-  const parentPort = worker_threads.parentPort;
-  let tw;
-  try {
-    tw = require("${f}");
-  } catch (e) {
-    console.log("could not load from ${f}");
-  }
-  if (!tw) {
-    try {
-      tw = require("taler-wallet-android");
-    } catch (e) {
-      console.log("could not load taler-wallet-android either");
-      throw e;
-    }
-  }
-  parentPort.on("message", tw.handleWorkerMessage);
-  parentPort.on("error", tw.handleWorkerError);
-`;
-
-/**
- * This function is executed in the worker thread to handle
- * a message.
- */
-export function handleWorkerMessage(msg: any): void {
-  const args = msg.args;
-  if (!Array.isArray(args)) {
-    console.error("args must be array");
-    return;
-  }
-  const id = msg.id;
-  if (typeof id !== "number") {
-    console.error("RPC id must be number");
-    return;
-  }
-  const operation = msg.operation;
-  if (typeof operation !== "string") {
-    console.error("RPC operation must be string");
-    return;
-  }
-
-  const handleRequest = async (): Promise<void> => {
-    const impl = new CryptoImplementation();
-
-    if (!(operation in impl)) {
-      console.error(`crypto operation '${operation}' not found`);
-      return;
-    }
-
-    try {
-      const result = (impl as any)[operation](...args);
-      // eslint-disable-next-line @typescript-eslint/no-var-requires
-      const worker_threads = require("worker_threads");
-      const p = worker_threads.parentPort;
-      worker_threads.parentPort?.postMessage;
-      if (p) {
-        p.postMessage({ data: { result, id } });
-      } else {
-        console.error("parent port not available (not running in thread?");
-      }
-    } catch (e) {
-      console.error("error during operation", e);
-      return;
-    }
-  };
-
-  handleRequest().catch((e) => {
-    console.error("error in node worker", e);
-  });
-}
-
-export function handleWorkerError(e: Error): void {
-  console.log("got error from worker", e);
-}
-
-export class NodeThreadCryptoWorkerFactory implements CryptoWorkerFactory {
-  startWorker(): CryptoWorker {
-    if (typeof require === "undefined") {
-      throw Error("cannot make worker, require(...) not defined");
-    }
-    return new NodeThreadCryptoWorker();
-  }
-
-  getConcurrency(): number {
-    return Math.max(1, os.cpus().length - 1);
-  }
-}
-
-/**
- * Worker implementation that uses node subprocesses.
- */
-class NodeThreadCryptoWorker implements CryptoWorker {
-  /**
-   * Function to be called when we receive a message from the worker thread.
-   */
-  onmessage: undefined | ((m: any) => void);
-
-  /**
-   * Function to be called when we receive an error from the worker thread.
-   */
-  onerror: undefined | ((m: any) => void);
-
-  private nodeWorker: import("worker_threads").Worker;
-
-  constructor() {
-    // eslint-disable-next-line @typescript-eslint/no-var-requires
-    const worker_threads = require("worker_threads");
-    this.nodeWorker = new worker_threads.Worker(workerCode, { eval: true });
-    this.nodeWorker.on("error", (err: Error) => {
-      console.error("error in node worker:", err);
-      if (this.onerror) {
-        this.onerror(err);
-      }
-    });
-    this.nodeWorker.on("message", (v: any) => {
-      if (this.onmessage) {
-        this.onmessage(v);
-      }
-    });
-    this.nodeWorker.unref();
-  }
-
-  /**
-   * Add an event listener for either an "error" or "message" event.
-   */
-  addEventListener(event: "message" | "error", fn: (x: any) => void): void {
-    switch (event) {
-      case "message":
-        this.onmessage = fn;
-        break;
-      case "error":
-        this.onerror = fn;
-        break;
-    }
-  }
-
-  /**
-   * Send a message to the worker thread.
-   */
-  postMessage(msg: any): void {
-    this.nodeWorker.postMessage(msg);
-  }
-
-  /**
-   * Forcibly terminate the worker thread.
-   */
-  terminate(): void {
-    this.nodeWorker.terminate();
-  }
-}
diff --git a/src/crypto/workers/synchronousWorker.ts b/src/crypto/workers/synchronousWorker.ts
deleted file mode 100644
index 2cc740975..000000000
--- a/src/crypto/workers/synchronousWorker.ts
+++ /dev/null
@@ -1,137 +0,0 @@
-/*
- This file is part of GNU Taler
- (C) 2019 GNUnet e.V.
-
- GNU Taler is free software; you can redistribute it and/or modify it under the
- terms of the GNU General Public License as published by the Free Software
- Foundation; either version 3, or (at your option) any later version.
-
- GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
- WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
- A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License along with
- GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
- */
-
-import { CryptoImplementation } from "./cryptoImplementation";
-
-import { CryptoWorkerFactory } from "./cryptoApi";
-import { CryptoWorker } from "./cryptoWorker";
-
-/**
- * The synchronous crypto worker produced by this factory doesn't run in the
- * background, but actually blocks the caller until the operation is done.
- */
-export class SynchronousCryptoWorkerFactory implements CryptoWorkerFactory {
-  startWorker(): CryptoWorker {
-    if (typeof require === "undefined") {
-      throw Error("cannot make worker, require(...) not defined");
-    }
-    const workerCtor = require("./synchronousWorker").SynchronousCryptoWorker;
-    return new workerCtor();
-  }
-
-  getConcurrency(): number {
-    return 1;
-  }
-}
-
-/**
- * Worker implementation that uses node subprocesses.
- */
-export class SynchronousCryptoWorker {
-  /**
-   * Function to be called when we receive a message from the worker thread.
-   */
-  onmessage: undefined | ((m: any) => void);
-
-  /**
-   * Function to be called when we receive an error from the worker thread.
-   */
-  onerror: undefined | ((m: any) => void);
-
-  constructor() {
-    this.onerror = undefined;
-    this.onmessage = undefined;
-  }
-
-  /**
-   * Add an event listener for either an "error" or "message" event.
-   */
-  addEventListener(event: "message" | "error", fn: (x: any) => void): void {
-    switch (event) {
-      case "message":
-        this.onmessage = fn;
-        break;
-      case "error":
-        this.onerror = fn;
-        break;
-    }
-  }
-
-  private dispatchMessage(msg: any): void {
-    if (this.onmessage) {
-      this.onmessage({ data: msg });
-    }
-  }
-
-  private async handleRequest(
-    operation: string,
-    id: number,
-    args: string[],
-  ): Promise<void> {
-    const impl = new CryptoImplementation();
-
-    if (!(operation in impl)) {
-      console.error(`crypto operation '${operation}' not found`);
-      return;
-    }
-
-    let result: any;
-    try {
-      result = (impl as any)[operation](...args);
-    } catch (e) {
-      console.log("error during operation", e);
-      return;
-    }
-
-    try {
-      setTimeout(() => this.dispatchMessage({ result, id }), 0);
-    } catch (e) {
-      console.log("got error during dispatch", e);
-    }
-  }
-
-  /**
-   * Send a message to the worker thread.
-   */
-  postMessage(msg: any): void {
-    const args = msg.args;
-    if (!Array.isArray(args)) {
-      console.error("args must be array");
-      return;
-    }
-    const id = msg.id;
-    if (typeof id !== "number") {
-      console.error("RPC id must be number");
-      return;
-    }
-    const operation = msg.operation;
-    if (typeof operation !== "string") {
-      console.error("RPC operation must be string");
-      return;
-    }
-
-    this.handleRequest(operation, id, args).catch((e) => {
-      console.error("Error while handling crypto request:", e);
-    });
-  }
-
-  /**
-   * Forcibly terminate the worker thread.
-   */
-  terminate(): void {
-    // This is a no-op.
-  }
-}
author	Florian Dold <florian.dold@gmail.com>	2020-08-03 13:00:48 +0530
committer	Florian Dold <florian.dold@gmail.com>	2020-08-03 13:01:05 +0530
commit	ffd2a62c3f7df94365980302fef3bc3376b48182 (patch)
tree	270af6f16b4cc7f5da2afdba55c8bc9dbea5eca5 /src/crypto
parent	aa481e42675fb7c4dcbbeec0ba1c61e1953b9596 (diff)