From ffd2a62c3f7df94365980302fef3bc3376b48182 Mon Sep 17 00:00:00 2001
From: Florian Dold <florian.dold@gmail.com>
Date: Mon, 3 Aug 2020 13:00:48 +0530
Subject: modularize repo, use pnpm, improve typechecking

---
 src/crypto/primitives/kdf.ts | 92 --------------------------------------------
 1 file changed, 92 deletions(-)
 delete mode 100644 src/crypto/primitives/kdf.ts

(limited to 'src/crypto/primitives/kdf.ts')

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);
-}
-- 
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