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Diffstat (limited to 'lib/wallet/emscriptif.ts')
| -rw-r--r-- | lib/wallet/emscriptif.ts | 1245 |
1 files changed, 0 insertions, 1245 deletions
diff --git a/lib/wallet/emscriptif.ts b/lib/wallet/emscriptif.ts deleted file mode 100644 index b26f35ebd..000000000 --- a/lib/wallet/emscriptif.ts +++ /dev/null @@ -1,1245 +0,0 @@ -/* - This file is part of TALER - (C) 2015 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/> - */ - -import {AmountJson} from "./types"; -import Module, {EmscFunGen} from "../emscripten/taler-emscripten-lib"; - -/** - * High-level interface to emscripten-compiled modules used - * by the wallet. - * - * @author Florian Dold - */ - -"use strict"; - -// Size of a native pointer. -const PTR_SIZE = 4; - -const GNUNET_OK = 1; -const GNUNET_YES = 1; -const GNUNET_NO = 0; -const GNUNET_SYSERR = -1; - - -const getEmsc: EmscFunGen = (name: string, ret: any, argTypes: any[]) => { - return (...args: any[]) => { - return Module.ccall(name, ret, argTypes, args); - } -}; - - -/** - * Wrapped emscripten functions that do not allocate any memory. - */ -const emsc = { - free: (ptr: number) => Module._free(ptr), - get_value: getEmsc("TALER_WR_get_value", - "number", - ["number"]), - get_fraction: getEmsc("TALER_WR_get_fraction", - "number", - ["number"]), - get_currency: getEmsc("TALER_WR_get_currency", - "string", - ["number"]), - amount_add: getEmsc("TALER_amount_add", - "number", - ["number", "number", "number"]), - amount_subtract: getEmsc("TALER_amount_subtract", - "number", - ["number", "number", "number"]), - amount_normalize: getEmsc("TALER_amount_normalize", - "void", - ["number"]), - amount_get_zero: getEmsc("TALER_amount_get_zero", - "number", - ["string", "number"]), - amount_cmp: getEmsc("TALER_amount_cmp", - "number", - ["number", "number"]), - amount_hton: getEmsc("TALER_amount_hton", - "void", - ["number", "number"]), - amount_ntoh: getEmsc("TALER_amount_ntoh", - "void", - ["number", "number"]), - hash: getEmsc("GNUNET_CRYPTO_hash", - "void", - ["number", "number", "number"]), - memmove: getEmsc("memmove", - "number", - ["number", "number", "number"]), - rsa_public_key_free: getEmsc("GNUNET_CRYPTO_rsa_public_key_free", - "void", - ["number"]), - rsa_signature_free: getEmsc("GNUNET_CRYPTO_rsa_signature_free", - "void", - ["number"]), - string_to_data: getEmsc("GNUNET_STRINGS_string_to_data", - "number", - ["number", "number", "number", "number"]), - eddsa_sign: getEmsc("GNUNET_CRYPTO_eddsa_sign", - "number", - ["number", "number", "number"]), - eddsa_verify: getEmsc("GNUNET_CRYPTO_eddsa_verify", - "number", - ["number", "number", "number", "number"]), - hash_create_random: getEmsc("GNUNET_CRYPTO_hash_create_random", - "void", - ["number", "number"]), - rsa_blinding_key_destroy: getEmsc("GNUNET_CRYPTO_rsa_blinding_key_free", - "void", - ["number"]), - random_block: getEmsc("GNUNET_CRYPTO_random_block", - "void", - ["number", "number", "number"]), - hash_context_abort: getEmsc("GNUNET_CRYPTO_hash_context_abort", - "void", - ["number"]), - hash_context_read: getEmsc("GNUNET_CRYPTO_hash_context_read", - "void", - ["number", "number", "number"]), - hash_context_finish: getEmsc("GNUNET_CRYPTO_hash_context_finish", - "void", - ["number", "number"]), - ecdh_eddsa: getEmsc("GNUNET_CRYPTO_ecdh_eddsa", - "number", - ["number", "number", "number"]), - - setup_fresh_coin: getEmsc( - "TALER_setup_fresh_coin", - "void", - ["number", "number", "number"]), -}; - -const emscAlloc = { - get_amount: getEmsc("TALER_WRALL_get_amount", - "number", - ["number", "number", "number", "string"]), - eddsa_key_create: getEmsc("GNUNET_CRYPTO_eddsa_key_create", - "number", []), - ecdsa_key_create: getEmsc("GNUNET_CRYPTO_ecdsa_key_create", - "number", []), - ecdhe_key_create: getEmsc("GNUNET_CRYPTO_ecdhe_key_create", - "number", []), - eddsa_public_key_from_private: getEmsc( - "TALER_WRALL_eddsa_public_key_from_private", - "number", - ["number"]), - ecdsa_public_key_from_private: getEmsc( - "TALER_WRALL_ecdsa_public_key_from_private", - "number", - ["number"]), - ecdhe_public_key_from_private: getEmsc( - "TALER_WRALL_ecdhe_public_key_from_private", - "number", - ["number"]), - data_to_string_alloc: getEmsc("GNUNET_STRINGS_data_to_string_alloc", - "number", - ["number", "number"]), - purpose_create: getEmsc("TALER_WRALL_purpose_create", - "number", - ["number", "number", "number"]), - rsa_blind: getEmsc("GNUNET_CRYPTO_rsa_blind", - "number", - ["number", "number", "number", "number", "number"]), - rsa_blinding_key_create: getEmsc("GNUNET_CRYPTO_rsa_blinding_key_create", - "number", - ["number"]), - rsa_blinding_key_encode: getEmsc("GNUNET_CRYPTO_rsa_blinding_key_encode", - "number", - ["number", "number"]), - rsa_signature_encode: getEmsc("GNUNET_CRYPTO_rsa_signature_encode", - "number", - ["number", "number"]), - rsa_blinding_key_decode: getEmsc("GNUNET_CRYPTO_rsa_blinding_key_decode", - "number", - ["number", "number"]), - rsa_public_key_decode: getEmsc("GNUNET_CRYPTO_rsa_public_key_decode", - "number", - ["number", "number"]), - rsa_signature_decode: getEmsc("GNUNET_CRYPTO_rsa_signature_decode", - "number", - ["number", "number"]), - rsa_public_key_encode: getEmsc("GNUNET_CRYPTO_rsa_public_key_encode", - "number", - ["number", "number"]), - rsa_unblind: getEmsc("GNUNET_CRYPTO_rsa_unblind", - "number", - ["number", "number", "number"]), - hash_context_start: getEmsc("GNUNET_CRYPTO_hash_context_start", - "number", - []), - malloc: (size: number) => Module._malloc(size), -}; - - -export enum SignaturePurpose { - RESERVE_WITHDRAW = 1200, - WALLET_COIN_DEPOSIT = 1201, - MASTER_DENOMINATION_KEY_VALIDITY = 1025, - WALLET_COIN_MELT = 1202, - TEST = 4242, -} - -export enum RandomQuality { - WEAK = 0, - STRONG = 1, - NONCE = 2 -} - -interface ArenaObject { - destroy(): void; -} - - -export class HashContext implements ArenaObject { - private hashContextPtr: number | undefined; - - constructor() { - this.hashContextPtr = emscAlloc.hash_context_start(); - } - - read(obj: PackedArenaObject): void { - if (!this.hashContextPtr) { - throw Error("assertion failed"); - } - emsc.hash_context_read(this.hashContextPtr, obj.nativePtr, obj.size()); - } - - finish(h: HashCode) { - if (!this.hashContextPtr) { - throw Error("assertion failed"); - } - h.alloc(); - emsc.hash_context_finish(this.hashContextPtr, h.nativePtr); - } - - destroy(): void { - if (this.hashContextPtr) { - emsc.hash_context_abort(this.hashContextPtr); - } - this.hashContextPtr = undefined; - } -} - - -abstract class MallocArenaObject implements ArenaObject { - protected _nativePtr: number | undefined = undefined; - - /** - * Is this a weak reference to the underlying memory? - */ - isWeak = false; - arena: Arena; - - destroy(): void { - if (this._nativePtr && !this.isWeak) { - emsc.free(this.nativePtr); - this._nativePtr = undefined; - } - } - - constructor(arena?: Arena) { - if (!arena) { - if (arenaStack.length == 0) { - throw Error("No arena available") - } - arena = arenaStack[arenaStack.length - 1]; - } - arena.put(this); - this.arena = arena; - } - - alloc(size: number) { - if (this._nativePtr !== undefined) { - throw Error("Double allocation"); - } - this.nativePtr = emscAlloc.malloc(size); - } - - set nativePtr(v: number) { - if (v === undefined) { - throw Error("Native pointer must be a number or null"); - } - this._nativePtr = v; - } - - get nativePtr() { - // We want to allow latent allocation - // of native wrappers, but we never want to - // pass 'undefined' to emscripten. - if (this._nativePtr === undefined) { - throw Error("Native pointer not initialized"); - } - return this._nativePtr; - } -} - - -interface Arena { - put(obj: ArenaObject): void; - destroy(): void; -} - - -/** - * Arena that must be manually destroyed. - */ -class SimpleArena implements Arena { - heap: Array<ArenaObject>; - - constructor() { - this.heap = []; - } - - put(obj: ArenaObject) { - this.heap.push(obj); - } - - destroy() { - for (let obj of this.heap) { - obj.destroy(); - } - this.heap = [] - } -} - - -/** - * Arena that destroys all its objects once control has returned to the message - * loop. - */ -class SyncArena extends SimpleArena { - private isScheduled: boolean; - - constructor() { - super(); - } - - pub(obj: MallocArenaObject) { - super.put(obj); - if (!this.isScheduled) { - this.schedule(); - } - this.heap.push(obj); - } - - private schedule() { - this.isScheduled = true; - Promise.resolve().then(() => { - this.isScheduled = false; - this.destroy(); - }); - } -} - -let arenaStack: Arena[] = []; -arenaStack.push(new SyncArena()); - - -export class Amount extends MallocArenaObject { - constructor(args?: AmountJson, arena?: Arena) { - super(arena); - if (args) { - this.nativePtr = emscAlloc.get_amount(args.value, - 0, - args.fraction, - args.currency); - } else { - this.nativePtr = emscAlloc.get_amount(0, 0, 0, ""); - } - } - - static getZero(currency: string, a?: Arena): Amount { - let am = new Amount(undefined, a); - let r = emsc.amount_get_zero(currency, am.nativePtr); - if (r != GNUNET_OK) { - throw Error("invalid currency"); - } - return am; - } - - - toNbo(a?: Arena): AmountNbo { - let x = new AmountNbo(a); - x.alloc(); - emsc.amount_hton(x.nativePtr, this.nativePtr); - return x; - } - - fromNbo(nbo: AmountNbo): void { - emsc.amount_ntoh(this.nativePtr, nbo.nativePtr); - } - - get value() { - return emsc.get_value(this.nativePtr); - } - - get fraction() { - return emsc.get_fraction(this.nativePtr); - } - - get currency(): String { - return emsc.get_currency(this.nativePtr); - } - - toJson(): AmountJson { - return { - value: emsc.get_value(this.nativePtr), - fraction: emsc.get_fraction(this.nativePtr), - currency: emsc.get_currency(this.nativePtr) - }; - } - - /** - * Add an amount to this amount. - */ - add(a: Amount) { - let res = emsc.amount_add(this.nativePtr, a.nativePtr, this.nativePtr); - if (res < 1) { - // Overflow - return false; - } - return true; - } - - /** - * Perform saturating subtraction on amounts. - */ - sub(a: Amount) { - // this = this - a - let res = emsc.amount_subtract(this.nativePtr, this.nativePtr, a.nativePtr); - if (res == 0) { - // Underflow - return false; - } - if (res > 0) { - return true; - } - throw Error("Incompatible currencies"); - } - - cmp(a: Amount) { - // If we don't check this, the c code aborts. - if (this.currency !== a.currency) { - throw Error(`incomparable currencies (${this.currency} and ${a.currency})`); - } - return emsc.amount_cmp(this.nativePtr, a.nativePtr); - } - - normalize() { - emsc.amount_normalize(this.nativePtr); - } -} - - -/** - * Count the UTF-8 characters in a JavaScript string. - */ -function countUtf8Bytes(str: string): number { - var s = str.length; - // JavaScript strings are UTF-16 arrays - for (let i = str.length - 1; i >= 0; i--) { - var code = str.charCodeAt(i); - if (code > 0x7f && code <= 0x7ff) { - // We need an extra byte in utf-8 here - s++; - } else if (code > 0x7ff && code <= 0xffff) { - // We need two extra bytes in utf-8 here - s += 2; - } - // Skip over the other surrogate - if (code >= 0xDC00 && code <= 0xDFFF) { - i--; - } - } - return s; -} - - -/** - * Managed reference to a contiguous block of memory in the Emscripten heap. - * Can be converted from / to a serialized representation. - * Should contain only data, not pointers. - */ -abstract class PackedArenaObject extends MallocArenaObject { - abstract size(): number; - - constructor(a?: Arena) { - super(a); - } - - randomize(qual: RandomQuality = RandomQuality.STRONG): void { - emsc.random_block(qual, this.nativePtr, this.size()); - } - - toCrock(): string { - var d = emscAlloc.data_to_string_alloc(this.nativePtr, this.size()); - var s = Module.Pointer_stringify(d); - emsc.free(d); - return s; - } - - toJson(): any { - // Per default, the json encoding of - // packed arena objects is just the crockford encoding. - // Subclasses typically want to override this. - return this.toCrock(); - } - - loadCrock(s: string) { - this.alloc(); - // We need to get the javascript string - // to the emscripten heap first. - let buf = ByteArray.fromStringWithNull(s); - let res = emsc.string_to_data(buf.nativePtr, - s.length, - this.nativePtr, - this.size()); - buf.destroy(); - if (res < 1) { - throw {error: "wrong encoding"}; - } - } - - alloc() { - // FIXME: should the client be allowed to call alloc multiple times? - if (!this._nativePtr) { - this.nativePtr = emscAlloc.malloc(this.size()); - } - } - - hash(): HashCode { - var x = new HashCode(); - x.alloc(); - emsc.hash(this.nativePtr, this.size(), x.nativePtr); - return x; - } - - hexdump() { - let bytes: string[] = []; - for (let i = 0; i < this.size(); i++) { - let b = Module.getValue(this.nativePtr + i, "i8"); - b = (b + 256) % 256; - bytes.push("0".concat(b.toString(16)).slice(-2)); - } - let lines: string[] = []; - for (let i = 0; i < bytes.length; i += 8) { - lines.push(bytes.slice(i, i + 8).join(",")); - } - return lines.join("\n"); - } -} - - -export class AmountNbo extends PackedArenaObject { - size() { - return 24; - } - - toJson(): any { - let a = new SimpleArena(); - let am = new Amount(undefined, a); - am.fromNbo(this); - let json = am.toJson(); - a.destroy(); - return json; - } -} - - -export class EddsaPrivateKey extends PackedArenaObject { - static create(a?: Arena): EddsaPrivateKey { - let obj = new EddsaPrivateKey(a); - obj.nativePtr = emscAlloc.eddsa_key_create(); - return obj; - } - - size() { - return 32; - } - - getPublicKey(a?: Arena): EddsaPublicKey { - let obj = new EddsaPublicKey(a); - obj.nativePtr = emscAlloc.eddsa_public_key_from_private(this.nativePtr); - return obj; - } - - static fromCrock: (s: string) => EddsaPrivateKey; -} -mixinStatic(EddsaPrivateKey, fromCrock); - - -export class EcdsaPrivateKey extends PackedArenaObject { - static create(a?: Arena): EcdsaPrivateKey { - let obj = new EcdsaPrivateKey(a); - obj.nativePtr = emscAlloc.ecdsa_key_create(); - return obj; - } - - size() { - return 32; - } - - getPublicKey(a?: Arena): EcdsaPublicKey { - let obj = new EcdsaPublicKey(a); - obj.nativePtr = emscAlloc.ecdsa_public_key_from_private(this.nativePtr); - return obj; - } - - static fromCrock: (s: string) => EcdsaPrivateKey; -} -mixinStatic(EcdsaPrivateKey, fromCrock); - - -export class EcdhePrivateKey extends PackedArenaObject { - static create(a?: Arena): EcdhePrivateKey { - let obj = new EcdhePrivateKey(a); - obj.nativePtr = emscAlloc.ecdhe_key_create(); - return obj; - } - - size() { - return 32; - } - - getPublicKey(a?: Arena): EcdhePublicKey { - let obj = new EcdhePublicKey(a); - obj.nativePtr = emscAlloc.ecdhe_public_key_from_private(this.nativePtr); - return obj; - } - - static fromCrock: (s: string) => EcdhePrivateKey; -} -mixinStatic(EcdhePrivateKey, fromCrock); - - -function fromCrock(s: string) { - let x = new this(); - x.alloc(); - x.loadCrock(s); - return x; -} - - -function mixin(obj: any, method: any, name?: string) { - if (!name) { - name = method.name; - } - if (!name) { - throw Error("Mixin needs a name."); - } - obj.prototype[method.name] = method; -} - - -function mixinStatic(obj: any, method: any, name?: string) { - if (!name) { - name = method.name; - } - if (!name) { - throw Error("Mixin needs a name."); - } - obj[method.name] = method; -} - - -export class EddsaPublicKey extends PackedArenaObject { - size() { - return 32; - } - - static fromCrock: (s: string) => EddsaPublicKey; -} -mixinStatic(EddsaPublicKey, fromCrock); - -export class EcdsaPublicKey extends PackedArenaObject { - size() { - return 32; - } - - static fromCrock: (s: string) => EcdsaPublicKey; -} -mixinStatic(EcdsaPublicKey, fromCrock); - - -export class EcdhePublicKey extends PackedArenaObject { - size() { - return 32; - } - - static fromCrock: (s: string) => EcdhePublicKey; -} -mixinStatic(EcdhePublicKey, fromCrock); - - -function makeFromCrock(decodeFn: (p: number, s: number) => number) { - function fromCrock(s: string, a?: Arena) { - let obj = new this(a); - let buf = ByteArray.fromCrock(s); - obj.setNative(decodeFn(buf.nativePtr, - buf.size())); - buf.destroy(); - return obj; - } - - return fromCrock; -} - -function makeToCrock(encodeFn: (po: number, - ps: number) => number): () => string { - function toCrock() { - let ptr = emscAlloc.malloc(PTR_SIZE); - let size = emscAlloc.rsa_blinding_key_encode(this.nativePtr, ptr); - let res = new ByteArray(size, Module.getValue(ptr, '*')); - let s = res.toCrock(); - emsc.free(ptr); - res.destroy(); - return s; - } - - return toCrock; -} - -export class RsaBlindingKeySecret extends PackedArenaObject { - size() { - return 32; - } - - /** - * Create a random blinding key secret. - */ - static create(a?: Arena): RsaBlindingKeySecret { - let o = new RsaBlindingKeySecret(a); - o.alloc(); - o.randomize(); - return o; - } - - static fromCrock: (s: string) => RsaBlindingKeySecret; -} -mixinStatic(RsaBlindingKeySecret, fromCrock); - - -export class HashCode extends PackedArenaObject { - size() { - return 64; - } - - static fromCrock: (s: string) => HashCode; - - random(qual: RandomQuality = RandomQuality.STRONG) { - this.alloc(); - emsc.hash_create_random(qual, this.nativePtr); - } -} -mixinStatic(HashCode, fromCrock); - - -export class ByteArray extends PackedArenaObject { - private allocatedSize: number; - - size() { - return this.allocatedSize; - } - - constructor(desiredSize: number, init?: number, a?: Arena) { - super(a); - if (init === undefined) { - this.nativePtr = emscAlloc.malloc(desiredSize); - } else { - this.nativePtr = init; - } - this.allocatedSize = desiredSize; - } - - static fromStringWithoutNull(s: string, a?: Arena): ByteArray { - // UTF-8 bytes, including 0-terminator - let terminatedByteLength = countUtf8Bytes(s) + 1; - let hstr = emscAlloc.malloc(terminatedByteLength); - Module.stringToUTF8(s, hstr, terminatedByteLength); - return new ByteArray(terminatedByteLength - 1, hstr, a); - } - - static fromStringWithNull(s: string, a?: Arena): ByteArray { - // UTF-8 bytes, including 0-terminator - let terminatedByteLength = countUtf8Bytes(s) + 1; - let hstr = emscAlloc.malloc(terminatedByteLength); - Module.stringToUTF8(s, hstr, terminatedByteLength); - return new ByteArray(terminatedByteLength, hstr, a); - } - - static fromCrock(s: string, a?: Arena): ByteArray { - let byteLength = countUtf8Bytes(s); - let hstr = emscAlloc.malloc(byteLength + 1); - Module.stringToUTF8(s, hstr, byteLength + 1); - let decodedLen = Math.floor((byteLength * 5) / 8); - let ba = new ByteArray(decodedLen, undefined, a); - let res = emsc.string_to_data(hstr, byteLength, ba.nativePtr, decodedLen); - emsc.free(hstr); - if (res != GNUNET_OK) { - throw Error("decoding failed"); - } - return ba; - } -} - - -export class EccSignaturePurpose extends PackedArenaObject { - size() { - return this.payloadSize + 8; - } - - payloadSize: number; - - constructor(purpose: SignaturePurpose, - payload: PackedArenaObject, - a?: Arena) { - super(a); - this.nativePtr = emscAlloc.purpose_create(purpose, - payload.nativePtr, - payload.size()); - this.payloadSize = payload.size(); - } -} - - -abstract class SignatureStruct { - abstract fieldTypes(): Array<any>; - - abstract purpose(): SignaturePurpose; - - private members: any = {}; - - constructor(x: { [name: string]: any }) { - for (let k in x) { - this.set(k, x[k]); - } - } - - toPurpose(a?: Arena): EccSignaturePurpose { - let totalSize = 0; - for (let f of this.fieldTypes()) { - let name = f[0]; - let member = this.members[name]; - if (!member) { - throw Error(`Member ${name} not set`); - } - totalSize += member.size(); - } - - let buf = emscAlloc.malloc(totalSize); - let ptr = buf; - for (let f of this.fieldTypes()) { - let name = f[0]; - let member = this.members[name]; - let size = member.size(); - emsc.memmove(ptr, member.nativePtr, size); - ptr += size; - } - let ba = new ByteArray(totalSize, buf, a); - return new EccSignaturePurpose(this.purpose(), ba); - } - - - toJson() { - let res: any = {}; - for (let f of this.fieldTypes()) { - let name = f[0]; - let member = this.members[name]; - if (!member) { - throw Error(`Member ${name} not set`); - } - res[name] = member.toJson(); - } - res["purpose"] = this.purpose(); - return res; - } - - protected set(name: string, value: PackedArenaObject) { - let typemap: any = {}; - for (let f of this.fieldTypes()) { - typemap[f[0]] = f[1]; - } - if (!(name in typemap)) { - throw Error(`Key ${name} not found`); - } - if (!(value instanceof typemap[name])) { - throw Error("Wrong type for ${name}"); - } - this.members[name] = value; - } -} - - -// It's redundant, but more type safe. -export interface WithdrawRequestPS_Args { - reserve_pub: EddsaPublicKey; - amount_with_fee: AmountNbo; - withdraw_fee: AmountNbo; - h_denomination_pub: HashCode; - h_coin_envelope: HashCode; -} - - -export class WithdrawRequestPS extends SignatureStruct { - constructor(w: WithdrawRequestPS_Args) { - super(w); - } - - purpose() { - return SignaturePurpose.RESERVE_WITHDRAW; - } - - fieldTypes() { - return [ - ["reserve_pub", EddsaPublicKey], - ["amount_with_fee", AmountNbo], - ["withdraw_fee", AmountNbo], - ["h_denomination_pub", HashCode], - ["h_coin_envelope", HashCode] - ]; - } -} - - -interface RefreshMeltCoinAffirmationPS_Args { - session_hash: HashCode; - amount_with_fee: AmountNbo; - melt_fee: AmountNbo; - coin_pub: EddsaPublicKey; -} - -export class RefreshMeltCoinAffirmationPS extends SignatureStruct { - - constructor(w: RefreshMeltCoinAffirmationPS_Args) { - super(w); - } - - purpose() { - return SignaturePurpose.WALLET_COIN_MELT; - } - - fieldTypes() { - return [ - ["session_hash", HashCode], - ["amount_with_fee", AmountNbo], - ["melt_fee", AmountNbo], - ["coin_pub", EddsaPublicKey] - ]; - } -} - - -export class AbsoluteTimeNbo extends PackedArenaObject { - static fromTalerString(s: string): AbsoluteTimeNbo { - let x = new AbsoluteTimeNbo(); - x.alloc(); - let r = /Date\(([0-9]+)\)/; - let m = r.exec(s); - if (!m || m.length != 2) { - throw Error(); - } - let n = parseInt(m[1]) * 1000000; - // XXX: This only works up to 54 bit numbers. - set64(x.nativePtr, n); - return x; - } - - size() { - return 8; - } -} - - -// XXX: This only works up to 54 bit numbers. -function set64(p: number, n: number) { - for (let i = 0; i < 8; ++i) { - Module.setValue(p + (7 - i), n & 0xFF, "i8"); - n = Math.floor(n / 256); - } -} - -// XXX: This only works up to 54 bit numbers. -function set32(p: number, n: number) { - for (let i = 0; i < 4; ++i) { - Module.setValue(p + (3 - i), n & 0xFF, "i8"); - n = Math.floor(n / 256); - } -} - - -export class UInt64 extends PackedArenaObject { - static fromNumber(n: number): UInt64 { - let x = new UInt64(); - x.alloc(); - set64(x.nativePtr, n); - return x; - } - - size() { - return 8; - } -} - - -export class UInt32 extends PackedArenaObject { - static fromNumber(n: number): UInt64 { - let x = new UInt32(); - x.alloc(); - set32(x.nativePtr, n); - return x; - } - - size() { - return 4; - } -} - - -// It's redundant, but more type safe. -export interface DepositRequestPS_Args { - h_contract: HashCode; - h_wire: HashCode; - timestamp: AbsoluteTimeNbo; - refund_deadline: AbsoluteTimeNbo; - transaction_id: UInt64; - amount_with_fee: AmountNbo; - deposit_fee: AmountNbo; - merchant: EddsaPublicKey; - coin_pub: EddsaPublicKey; -} - - -export class DepositRequestPS extends SignatureStruct { - constructor(w: DepositRequestPS_Args) { - super(w); - } - - purpose() { - return SignaturePurpose.WALLET_COIN_DEPOSIT; - } - - fieldTypes() { - return [ - ["h_contract", HashCode], - ["h_wire", HashCode], - ["timestamp", AbsoluteTimeNbo], - ["refund_deadline", AbsoluteTimeNbo], - ["transaction_id", UInt64], - ["amount_with_fee", AmountNbo], - ["deposit_fee", AmountNbo], - ["merchant", EddsaPublicKey], - ["coin_pub", EddsaPublicKey], - ]; - } -} - -export interface DenominationKeyValidityPS_args { - master: EddsaPublicKey; - start: AbsoluteTimeNbo; - expire_withdraw: AbsoluteTimeNbo; - expire_spend: AbsoluteTimeNbo; - expire_legal: AbsoluteTimeNbo; - value: AmountNbo; - fee_withdraw: AmountNbo; - fee_deposit: AmountNbo; - fee_refresh: AmountNbo; - fee_refund: AmountNbo; - denom_hash: HashCode; -} - -export class DenominationKeyValidityPS extends SignatureStruct { - constructor(w: DenominationKeyValidityPS_args) { - super(w); - } - - purpose() { - return SignaturePurpose.MASTER_DENOMINATION_KEY_VALIDITY; - } - - fieldTypes() { - return [ - ["master", EddsaPublicKey], - ["start", AbsoluteTimeNbo], - ["expire_withdraw", AbsoluteTimeNbo], - ["expire_spend", AbsoluteTimeNbo], - ["expire_legal", AbsoluteTimeNbo], - ["value", AmountNbo], - ["fee_withdraw", AmountNbo], - ["fee_deposit", AmountNbo], - ["fee_refresh", AmountNbo], - ["fee_refund", AmountNbo], - ["denom_hash", HashCode] - ]; - } -} - - -interface Encodeable { - encode(arena?: Arena): ByteArray; -} - -function makeEncode(encodeFn: any) { - function encode(arena?: Arena) { - let ptr = emscAlloc.malloc(PTR_SIZE); - let len = encodeFn(this.nativePtr, ptr); - let res = new ByteArray(len, undefined, arena); - res.nativePtr = Module.getValue(ptr, '*'); - emsc.free(ptr); - return res; - } - - return encode; -} - - -export class RsaPublicKey extends MallocArenaObject implements Encodeable { - static fromCrock: (s: string, a?: Arena) => RsaPublicKey; - - toCrock() { - return this.encode().toCrock(); - } - - destroy() { - emsc.rsa_public_key_free(this.nativePtr); - this.nativePtr = 0; - } - - encode: (arena?: Arena) => ByteArray; -} -mixinStatic(RsaPublicKey, makeFromCrock(emscAlloc.rsa_public_key_decode)); -mixin(RsaPublicKey, makeEncode(emscAlloc.rsa_public_key_encode)); - - -export class EddsaSignature extends PackedArenaObject { - size() { - return 64; - } -} - - -export class RsaSignature extends MallocArenaObject implements Encodeable { - static fromCrock: (s: string, a?: Arena) => RsaSignature; - - encode: (arena?: Arena) => ByteArray; - - destroy() { - emsc.rsa_signature_free(this.nativePtr); - this.nativePtr = 0; - } -} -mixinStatic(RsaSignature, makeFromCrock(emscAlloc.rsa_signature_decode)); -mixin(RsaSignature, makeEncode(emscAlloc.rsa_signature_encode)); - - -export function rsaBlind(hashCode: HashCode, - blindingKey: RsaBlindingKeySecret, - pkey: RsaPublicKey, - arena?: Arena): ByteArray|null { - let buf_ptr_out = emscAlloc.malloc(PTR_SIZE); - let buf_size_out = emscAlloc.malloc(PTR_SIZE); - let res = emscAlloc.rsa_blind(hashCode.nativePtr, - blindingKey.nativePtr, - pkey.nativePtr, - buf_ptr_out, - buf_size_out); - let buf_ptr = Module.getValue(buf_ptr_out, '*'); - let buf_size = Module.getValue(buf_size_out, '*'); - emsc.free(buf_ptr_out); - emsc.free(buf_size_out); - if (res != GNUNET_OK) { - // malicious key - return null; - } - return new ByteArray(buf_size, buf_ptr, arena); -} - - -export function eddsaSign(purpose: EccSignaturePurpose, - priv: EddsaPrivateKey, - a?: Arena): EddsaSignature { - let sig = new EddsaSignature(a); - sig.alloc(); - let res = emsc.eddsa_sign(priv.nativePtr, purpose.nativePtr, sig.nativePtr); - if (res < 1) { - throw Error("EdDSA signing failed"); - } - return sig; -} - - -export function eddsaVerify(purposeNum: number, - verify: EccSignaturePurpose, - sig: EddsaSignature, - pub: EddsaPublicKey, - a?: Arena): boolean { - let r = emsc.eddsa_verify(purposeNum, - verify.nativePtr, - sig.nativePtr, - pub.nativePtr); - return r === GNUNET_OK; -} - - -export function rsaUnblind(sig: RsaSignature, - bk: RsaBlindingKeySecret, - pk: RsaPublicKey, - a?: Arena): RsaSignature { - let x = new RsaSignature(a); - x.nativePtr = emscAlloc.rsa_unblind(sig.nativePtr, - bk.nativePtr, - pk.nativePtr); - return x; -} - - -type TransferSecretP = HashCode; - - -export interface FreshCoin { - priv: EddsaPrivateKey; - blindingKey: RsaBlindingKeySecret; -} - -export function ecdhEddsa(priv: EcdhePrivateKey, - pub: EddsaPublicKey): HashCode { - let h = new HashCode(); - h.alloc(); - let res = emsc.ecdh_eddsa(priv.nativePtr, pub.nativePtr, h.nativePtr); - if (res != GNUNET_OK) { - throw Error("ecdh_eddsa failed"); - } - return h; -} - -export function setupFreshCoin(secretSeed: TransferSecretP, - coinIndex: number): FreshCoin { - let priv = new EddsaPrivateKey(); - priv.isWeak = true; - let blindingKey = new RsaBlindingKeySecret(); - blindingKey.isWeak = true; - let buf = new ByteArray(priv.size() + blindingKey.size()); - - emsc.setup_fresh_coin(secretSeed.nativePtr, coinIndex, buf.nativePtr); - - priv.nativePtr = buf.nativePtr; - blindingKey.nativePtr = buf.nativePtr + priv.size(); - - return {priv, blindingKey}; -} |