wallet-core: towards exchange protocol v12

packages/taler-util/src/talerTypes.ts

@@ -1620,3 +1620,9 @@ export const codecForMerchantConfigResponse = (): Codec<MerchantConfigResponse>
     .property("name", codecForString())
     .property("version", codecForString())
     .build("MerchantConfigResponse");
+
+
+export enum ExchangeProtocolVersion {
+  V9 = 9,
+  V12 = 12,
+}

packages/taler-wallet-cli/rollup.config.js

@@ -4,7 +4,8 @@ import nodeResolve from "@rollup/plugin-node-resolve";
 import json from "@rollup/plugin-json";
 import builtins from "builtin-modules";
 import pkg from "./package.json";
-import sourcemaps from 'rollup-plugin-sourcemaps';
+import sourcemaps from "rollup-plugin-sourcemaps";
+import path from "path";
 
 export default {
   input: "lib/index.js",
@@ -12,6 +13,15 @@ export default {
     file: pkg.main,
     format: "cjs",
     sourcemap: true,
+    sourcemapPathTransform: (relativeSourcePath, sourcemapPath) => {
+      // Transform to source map paths to virtual path.  Otherwise,
+      // error messages would contain paths that look like they should exist (relative to
+      // the bundle) but don't.
+      const res = path.normalize(
+        path.join("/_walletsrc/packages/taler-wallet-cli/src/", relativeSourcePath),
+      );
+      return res;
+    },
   },
   external: builtins,
   plugins: [
@@ -29,5 +39,4 @@ export default {
 
     json(),
   ],
-}
+};
-

packages/taler-wallet-core/src/crypto/cryptoTypes.ts

@@ -27,7 +27,7 @@
 /**
  * Imports.
  */
-import { AmountJson, DenominationPubKey } from "@gnu-taler/taler-util";
+import { AmountJson, DenominationPubKey, ExchangeProtocolVersion } from "@gnu-taler/taler-util";
 
 export interface RefreshNewDenomInfo {
   count: number;
@@ -41,6 +41,7 @@ export interface RefreshNewDenomInfo {
  * secret seed.
  */
 export interface DeriveRefreshSessionRequest {
+  exchangeProtocolVersion: ExchangeProtocolVersion;
   sessionSecretSeed: string;
   kappa: number;
   meltCoinPub: string;

packages/taler-wallet-core/src/crypto/workers/cryptoImplementation.ts

@@ -36,6 +36,7 @@ import {
   buildSigPS,
   CoinDepositPermission,
   DenomKeyType,
+  ExchangeProtocolVersion,
   FreshCoin,
   hashDenomPub,
   RecoupRequest,
@@ -162,7 +163,7 @@ async function myEddsaSign(
 export class CryptoImplementation {
   static enableTracing = false;
 
-  constructor(private primitiveWorker?: PrimitiveWorker) { }
+  constructor(private primitiveWorker?: PrimitiveWorker) {}
 
   /**
    * Create a pre-coin of the given denomination to be withdrawn from then given
@@ -364,18 +365,18 @@ export class CryptoImplementation {
   }
 
   isValidWireAccount(
-    versionCurrent: number,
+    versionCurrent: ExchangeProtocolVersion,
     paytoUri: string,
     sig: string,
     masterPub: string,
   ): boolean {
-    if (versionCurrent === 10 || versionCurrent === 11) {
+    if (versionCurrent === ExchangeProtocolVersion.V12) {
       const paytoHash = hash(stringToBytes(paytoUri + "\0"));
       const p = buildSigPS(TalerSignaturePurpose.MASTER_WIRE_DETAILS)
         .put(paytoHash)
         .build();
       return eddsaVerify(p, decodeCrock(sig), decodeCrock(masterPub));
-    } else if (versionCurrent === 9) {
+    } else if (versionCurrent === ExchangeProtocolVersion.V9) {
       const h = kdf(
         64,
         stringToBytes("exchange-wire-signature"),
@@ -623,13 +624,27 @@ export class CryptoImplementation {
     }
 
     const sessionHash = sessionHc.finish();
-    const confirmData = buildSigPS(TalerSignaturePurpose.WALLET_COIN_MELT)
+    let confirmData: Uint8Array;
+    if (req.exchangeProtocolVersion === ExchangeProtocolVersion.V9) {
+      confirmData = buildSigPS(TalerSignaturePurpose.WALLET_COIN_MELT)
         .put(sessionHash)
         .put(decodeCrock(meltCoinDenomPubHash))
         .put(amountToBuffer(valueWithFee))
         .put(amountToBuffer(meltFee))
         .put(decodeCrock(meltCoinPub))
         .build();
+    } else if (req.exchangeProtocolVersion === ExchangeProtocolVersion.V12) {
+      confirmData = buildSigPS(TalerSignaturePurpose.WALLET_COIN_MELT)
+        .put(sessionHash)
+        .put(decodeCrock(meltCoinDenomPubHash))
+        .put(amountToBuffer(valueWithFee))
+        .put(amountToBuffer(meltFee))
+        .build();
+    } else {
+      throw Error(
+        `Exchange protocol version (${req.exchangeProtocolVersion}) not supported`,
+      );
+    }
 
     const confirmSigResp = await myEddsaSign(this.primitiveWorker, {
       msg: encodeCrock(confirmData),

packages/taler-wallet-core/src/operations/refresh.ts

@@ -17,6 +17,7 @@
 import {
   DenomKeyType,
   encodeCrock,
+  ExchangeProtocolVersion,
   getRandomBytes,
   HttpStatusCode,
 } from "@gnu-taler/taler-util";
@@ -91,8 +92,10 @@ export function getTotalRefreshCost(
   refreshedDenom: DenominationRecord,
   amountLeft: AmountJson,
 ): AmountJson {
-  const withdrawAmount = Amounts.sub(amountLeft, refreshedDenom.feeRefresh)
+  const withdrawAmount = Amounts.sub(
-    .amount;
+    amountLeft,
+    refreshedDenom.feeRefresh,
+  ).amount;
   const withdrawDenoms = selectWithdrawalDenominations(withdrawAmount, denoms);
   const resultingAmount = Amounts.add(
     Amounts.getZero(withdrawAmount.currency),
@@ -198,7 +201,8 @@ async function refreshCreateSession(
       }
 
       // FIXME: use an index here, based on the withdrawal expiration time.
-      const availableDenoms: DenominationRecord[] = await tx.denominations.indexes.byExchangeBaseUrl
+      const availableDenoms: DenominationRecord[] =
+        await tx.denominations.indexes.byExchangeBaseUrl
           .iter(exchange.baseUrl)
           .toArray();
 
@@ -351,7 +355,22 @@ async function refreshMelt(
 
   const { newCoinDenoms, oldCoin, oldDenom, refreshGroup, refreshSession } = d;
 
+  let exchangeProtocolVersion: ExchangeProtocolVersion;
+  switch (d.oldDenom.denomPub.cipher) {
+    case DenomKeyType.LegacyRsa: {
+      exchangeProtocolVersion = ExchangeProtocolVersion.V9;
+      break;
+    }
+    case DenomKeyType.Rsa: {
+      exchangeProtocolVersion = ExchangeProtocolVersion.V12;
+      break;
+    }
+    default:
+      throw Error("unsupported key type");
+  }
+
   const derived = await ws.cryptoApi.deriveRefreshSession({
+    exchangeProtocolVersion,
     kappa: 3,
     meltCoinDenomPubHash: oldCoin.denomPubHash,
     meltCoinPriv: oldCoin.coinPriv,
@@ -531,7 +550,22 @@ async function refreshReveal(
     norevealIndex,
   } = d;
 
+  let exchangeProtocolVersion: ExchangeProtocolVersion;
+  switch (d.oldDenom.denomPub.cipher) {
+    case DenomKeyType.LegacyRsa: {
+      exchangeProtocolVersion = ExchangeProtocolVersion.V9;
+      break;
+    }
+    case DenomKeyType.Rsa: {
+      exchangeProtocolVersion = ExchangeProtocolVersion.V12;
+      break;
+    }
+    default:
+      throw Error("unsupported key type");
+  }
+
   const derived = await ws.cryptoApi.deriveRefreshSession({
+    exchangeProtocolVersion,
     kappa: 3,
     meltCoinDenomPubHash: oldCoin.denomPubHash,
     meltCoinPriv: oldCoin.coinPriv,

packages/taler-wallet-core/src/versions.ts

@@ -19,7 +19,7 @@
  *
  * Uses libtool's current:revision:age versioning.
  */
-export const WALLET_EXCHANGE_PROTOCOL_VERSION = "10:0:1";
+export const WALLET_EXCHANGE_PROTOCOL_VERSION = "12:0:0";
 
 /**
  * Protocol version spoken with the merchant.