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add crypto worker thread

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This commit is contained in:
Florian Dold 2016-02-19 00:49:22 +01:00
parent d8609a70e9
commit f79533614f
5 changed files with 347 additions and 156 deletions
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137
extension/lib/wallet/cryptoLib.ts Normal file
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@ -0,0 +1,137 @@
/*
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, If not, see <http://www.gnu.org/licenses/>
*/
import {Denomination} from "./types";
/**
* Web worker for crypto operations.
* @author Florian Dold
*/
"use strict";
import * as native from "./emscriptif";
import {PreCoin, Reserve} from "./types";
import create = chrome.alarms.create;
export function main(worker: Worker) {
worker.onmessage = (msg: MessageEvent) => {
console.log("got data", msg.data);
if (!Array.isArray(msg.data.args)) {
console.error("args must be array");
return;
}
if (typeof msg.data.id != "number") {
console.error("RPC id must be number");
}
if (typeof msg.data.operation != "string") {
console.error("RPC operation must be string");
}
let f = RpcFunctions[msg.data.operation];
if (!f) {
console.error(`unknown operation: '${msg.data.operation}'`);
return;
}
let res = f(...msg.data.args);
worker.postMessage({result: res, id: msg.data.id});
}
}
console.log("hello, this is the crypto lib");
namespace RpcFunctions {
/**
* Create a pre-coin of the given denomination to be withdrawn from then given
* reserve.
*/
export function createPreCoin(denom: Denomination, reserve: Reserve): PreCoin {
let reservePriv = new native.EddsaPrivateKey();
reservePriv.loadCrock(reserve.reserve_priv);
let reservePub = new native.EddsaPublicKey();
reservePub.loadCrock(reserve.reserve_pub);
let denomPub = native.RsaPublicKey.fromCrock(denom.denom_pub);
let coinPriv = native.EddsaPrivateKey.create();
let coinPub = coinPriv.getPublicKey();
let blindingFactor = native.RsaBlindingKey.create(1024);
let pubHash: native.HashCode = coinPub.hash();
let ev: native.ByteArray = native.rsaBlind(pubHash,
blindingFactor,
denomPub);
if (!denom.fee_withdraw) {
throw Error("Field fee_withdraw missing");
}
let amountWithFee = new native.Amount(denom.value);
amountWithFee.add(new native.Amount(denom.fee_withdraw));
let withdrawFee = new native.Amount(denom.fee_withdraw);
// Signature
let withdrawRequest = new native.WithdrawRequestPS({
reserve_pub: reservePub,
amount_with_fee: amountWithFee.toNbo(),
withdraw_fee: withdrawFee.toNbo(),
h_denomination_pub: denomPub.encode().hash(),
h_coin_envelope: ev.hash()
});
var sig = native.eddsaSign(withdrawRequest.toPurpose(), reservePriv);
let preCoin: PreCoin = {
reservePub: reservePub.toCrock(),
blindingKey: blindingFactor.toCrock(),
coinPub: coinPub.toCrock(),
coinPriv: coinPriv.toCrock(),
denomPub: denomPub.encode().toCrock(),
mintBaseUrl: reserve.mint_base_url,
withdrawSig: sig.toCrock(),
coinEv: ev.toCrock(),
coinValue: denom.value
};
return preCoin;
}
export function isValidDenom(denom: Denomination,
masterPub: string): boolean {
let p = new native.DenominationKeyValidityPS({
master: native.EddsaPublicKey.fromCrock(masterPub),
denom_hash: native.RsaPublicKey.fromCrock(denom.denom_pub)
.encode()
.hash(),
expire_legal: native.AbsoluteTimeNbo.fromTalerString(denom.stamp_expire_legal),
expire_spend: native.AbsoluteTimeNbo.fromTalerString(denom.stamp_expire_deposit),
expire_withdraw: native.AbsoluteTimeNbo.fromTalerString(denom.stamp_expire_withdraw),
start: native.AbsoluteTimeNbo.fromTalerString(denom.stamp_start),
value: (new native.Amount(denom.value)).toNbo(),
fee_deposit: (new native.Amount(denom.fee_deposit)).toNbo(),
fee_refresh: (new native.Amount(denom.fee_refresh)).toNbo(),
fee_withdraw: (new native.Amount(denom.fee_withdraw)).toNbo(),
});
let nativeSig = new native.EddsaSignature();
nativeSig.loadCrock(denom.master_sig);
let nativePub = native.EddsaPublicKey.fromCrock(masterPub);
return native.eddsaVerify(native.SignaturePurpose.MASTER_DENOMINATION_KEY_VALIDITY,
p.toPurpose(),
nativeSig,
nativePub);
}
}

65
extension/lib/wallet/cryptoWorker.ts Normal file
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@ -0,0 +1,65 @@
/*
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, If not, see <http://www.gnu.org/licenses/>
*/
/**
* Web worker for crypto operations.
* @author Florian Dold
*/
"use strict";
importScripts("../emscripten/libwrapper.js",
"../vendor/system-csp-production.src.js");
// TypeScript does not allow ".js" extensions in the
// module name, so SystemJS must add it.
System.config({
defaultJSExtensions: true,
});
// We expect that in the manifest, the emscripten js is loaded
// becore the background page.
// Currently it is not possible to use SystemJS to load the emscripten js.
declare var Module: any;
if ("object" !== typeof Module) {
throw Error("emscripten not loaded, no 'Module' defined");
}
// Manually register the emscripten js as a SystemJS, so that
// we can use it from TypeScript by importing it.
{
let mod = System.newModule({Module: Module});
let modName = System.normalizeSync("../emscripten/emsc");
console.log("registering", modName);
System.set(modName, mod);
}
System.import("./cryptoLib")
.then((m) => {
m.main(self);
console.log("loaded");
})
.catch((e) => {
console.log("crypto worker failed");
console.error(e.stack);
});
console.log("in worker thread");

19
extension/lib/wallet/types.ts
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@ -107,6 +107,25 @@ export interface ReserveCreationInfo {
withdrawFee: AmountJson;
}
export interface PreCoin {
coinPub: string;
coinPriv: string;
reservePub: string;
denomPub: string;
blindingKey: string;
withdrawSig: string;
coinEv: string;
mintBaseUrl: string;
coinValue: AmountJson;
}
export interface Reserve {
mint_base_url: string
reserve_priv: string;
reserve_pub: string;
}
export interface Notifier {
notify();
}

188
extension/lib/wallet/wallet.ts
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@ -28,6 +28,8 @@ import {Query} from "./query";
import {Checkable} from "./checkable";
import {canonicalizeBaseUrl} from "./helpers";
import {ReserveCreationInfo} from "./types";
import {PreCoin} from "./types";
import {Reserve} from "./types";
"use strict";
@ -65,18 +67,6 @@ export class KeysJson {
}
export interface PreCoin {
coinPub: string;
coinPriv: string;
reservePub: string;
denomPub: string;
blindingKey: string;
withdrawSig: string;
coinEv: string;
mintBaseUrl: string;
coinValue: AmountJson;
}
export interface Coin {
coinPub: string;
coinPriv: string;
@ -87,34 +77,6 @@ export interface Coin {
}
function isValidDenom(denom: Denomination,
masterPub: string): boolean {
let p = new native.DenominationKeyValidityPS({
master: native.EddsaPublicKey.fromCrock(masterPub),
denom_hash: native.RsaPublicKey.fromCrock(denom.denom_pub).encode().hash(),
expire_legal: native.AbsoluteTimeNbo.fromTalerString(denom.stamp_expire_legal),
expire_spend: native.AbsoluteTimeNbo.fromTalerString(denom.stamp_expire_deposit),
expire_withdraw: native.AbsoluteTimeNbo.fromTalerString(denom.stamp_expire_withdraw),
start: native.AbsoluteTimeNbo.fromTalerString(denom.stamp_start),
value: (new native.Amount(denom.value)).toNbo(),
fee_deposit: (new native.Amount(denom.fee_deposit)).toNbo(),
fee_refresh: (new native.Amount(denom.fee_refresh)).toNbo(),
fee_withdraw: (new native.Amount(denom.fee_withdraw)).toNbo(),
});
let nativeSig = new native.EddsaSignature();
nativeSig.loadCrock(denom.master_sig);
let nativePub = native.EddsaPublicKey.fromCrock(masterPub);
return native.eddsaVerify(native.SignaturePurpose.MASTER_DENOMINATION_KEY_VALIDITY,
p.toPurpose(),
nativeSig,
nativePub);
}
class MintInfo implements IMintInfo {
baseUrl: string;
masterPublicKey: string;
@ -145,7 +107,8 @@ class MintInfo implements IMintInfo {
* mint info is updated with the new information up until
* the first error.
*/
mergeKeys(newKeys: KeysJson) {
mergeKeys(newKeys: KeysJson, wallet: Wallet): Promise<void> {
return Promise.resolve().then(() => {
if (!this.masterPublicKey) {
this.masterPublicKey = newKeys.master_public_key;
}
@ -181,7 +144,9 @@ class MintInfo implements IMintInfo {
console.log("validating denomination");
if (!isValidDenom(newDenom, this.masterPublicKey)) {
return wallet.isValidDenom(newDenom, this.masterPublicKey)
.then((valid) => {
if (!valid) {
throw Error("signature on denomination invalid");
}
@ -191,7 +156,12 @@ class MintInfo implements IMintInfo {
.hash()
.toCrock();
this.denoms.push(d);
});
}
return;
});
}
}
@ -330,13 +300,6 @@ interface Transaction {
}
interface Reserve {
mint_base_url: string
reserve_priv: string;
reserve_pub: string;
}
export interface Badge {
setText(s: string): void;
setColor(c: string): void;
@ -395,62 +358,6 @@ function rankDenom(denom1: any, denom2: any) {
}
function mergeMintKeys(oldKeys: KeysJson, newKeys: KeysJson) {
}
/**
* Create a pre-coin of the given denomination to be withdrawn from then given
* reserve.
*/
function createPreCoin(denom: Denomination, reserve: Reserve): PreCoin {
let reservePriv = new native.EddsaPrivateKey();
reservePriv.loadCrock(reserve.reserve_priv);
let reservePub = new native.EddsaPublicKey();
reservePub.loadCrock(reserve.reserve_pub);
let denomPub = native.RsaPublicKey.fromCrock(denom.denom_pub);
let coinPriv = native.EddsaPrivateKey.create();
let coinPub = coinPriv.getPublicKey();
let blindingFactor = native.RsaBlindingKey.create(1024);
let pubHash: native.HashCode = coinPub.hash();
let ev: native.ByteArray = native.rsaBlind(pubHash,
blindingFactor,
denomPub);
if (!denom.fee_withdraw) {
throw Error("Field fee_withdraw missing");
}
let amountWithFee = new native.Amount(denom.value);
amountWithFee.add(new native.Amount(denom.fee_withdraw));
let withdrawFee = new native.Amount(denom.fee_withdraw);
// Signature
let withdrawRequest = new native.WithdrawRequestPS({
reserve_pub: reservePub,
amount_with_fee: amountWithFee.toNbo(),
withdraw_fee: withdrawFee.toNbo(),
h_denomination_pub: denomPub.encode().hash(),
h_coin_envelope: ev.hash()
});
var sig = native.eddsaSign(withdrawRequest.toPurpose(), reservePriv);
let preCoin: PreCoin = {
reservePub: reservePub.toCrock(),
blindingKey: blindingFactor.toCrock(),
coinPub: coinPub.toCrock(),
coinPriv: coinPriv.toCrock(),
denomPub: denomPub.encode().toCrock(),
mintBaseUrl: reserve.mint_base_url,
withdrawSig: sig.toCrock(),
coinEv: ev.toCrock(),
coinValue: denom.value
};
return preCoin;
}
/**
* Get a list of denominations (with repetitions possible)
* whose total value is as close as possible to the available
@ -493,6 +400,9 @@ export class Wallet {
private http: HttpRequestLibrary;
private badge: Badge;
private notifier: Notifier;
private cryptoWorker: Worker;
private nextRpcId: number = 1;
private rpcRegistry = {};
constructor(db: IDBDatabase,
@ -503,6 +413,21 @@ export class Wallet {
this.http = http;
this.badge = badge;
this.notifier = notifier;
this.cryptoWorker = new Worker("/lib/wallet/cryptoWorker.js");
this.cryptoWorker.onmessage = (msg: MessageEvent) => {
let id = msg.data.id;
if (typeof id !== "number") {
console.error("rpc id must be number");
return;
}
if (!this.rpcRegistry[id]) {
console.error(`RPC with id ${id} has no registry entry`);
return;
}
let {resolve, reject} = this.rpcRegistry[id];
resolve(msg.data.result);
}
}
@ -693,7 +618,9 @@ export class Wallet {
.put("history", historyEntry)
.putAll("coins", payCoinInfo.map((pci) => pci.updatedCoin))
.finish()
.then(() => { this.notifier.notify(); });
.then(() => {
this.notifier.notify();
});
}
@ -903,7 +830,9 @@ export class Wallet {
.add("coins", coin)
.add("history", historyEntry)
.finish()
.then(() => { this.notifier.notify(); });
.then(() => {
this.notifier.notify();
});
}
@ -912,12 +841,15 @@ export class Wallet {
*/
private withdraw(denom: Denomination, reserve: Reserve): Promise<void> {
console.log("creating pre coin at", new Date());
let preCoin = createPreCoin(denom, reserve);
return this.createPreCoin(denom, reserve)
.then((preCoin) => {
return Query(this.db)
.put("precoins", preCoin)
.finish()
.then(() => this.withdrawExecute(preCoin))
.then((c) => this.storeCoin(c));
});
}
@ -1028,8 +960,14 @@ export class Wallet {
console.log("using old mint");
}
mint.mergeKeys(mintKeysJson);
return Query(this.db).put("mints", mint).finish().then(() => mint);
return mint.mergeKeys(mintKeysJson)
.then(() => {
return Query(this.db)
.put("mints", mint)
.finish()
.then(() => mint);
});
});
});
}
@ -1070,4 +1008,34 @@ export class Wallet {
.iter("history", {indexName: "timestamp"})
.reduce(collect, [])
}
registerRpcId(resolve, reject): number {
let id = this.nextRpcId++;
this.rpcRegistry[id] = {resolve, reject};
return id;
}
createPreCoin(denom: Denomination, reserve: Reserve): Promise<PreCoin> {
return new Promise((resolve, reject) => {
let msg = {
operation: "createPreCoin",
id: this.registerRpcId(resolve, reject),
args: [denom, reserve]
};
this.cryptoWorker.postMessage(msg);
});
}
isValidDenom(denom: Denomination,
masterPub: string): Promise<boolean> {
return new Promise((resolve, reject) => {
let msg = {
operation: "isValidDenom",
id: this.registerRpcId(resolve, reject),
args: [denom, masterPub]
};
this.cryptoWorker.postMessage(msg);
});
}
}

2
extension/tsconfig.json
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@ -13,6 +13,8 @@
"lib/i18n.ts",
"lib/refs.ts",
"lib/wallet/checkable.ts",
"lib/wallet/cryptoLib.ts",
"lib/wallet/cryptoWorker.ts",
"lib/wallet/db.ts",
"lib/wallet/emscriptif.ts",
"lib/wallet/helpers.ts",