From 89f1a281fea66b986fc0a003dc10446f6ed6e4a2 Mon Sep 17 00:00:00 2001
From: Florian Dold <florian@dold.me>
Date: Wed, 2 Dec 2020 14:55:04 +0100
Subject: backup WIP

---
 .../taler-wallet-core/src/crypto/workers/cryptoApi.ts  |  5 +++++
 .../src/crypto/workers/cryptoImplementation.ts         | 18 ++++++++++++++++++
 2 files changed, 23 insertions(+)

(limited to 'packages/taler-wallet-core/src/crypto')

diff --git a/packages/taler-wallet-core/src/crypto/workers/cryptoApi.ts b/packages/taler-wallet-core/src/crypto/workers/cryptoApi.ts
index 286de5a17..29f3b02b2 100644
--- a/packages/taler-wallet-core/src/crypto/workers/cryptoApi.ts
+++ b/packages/taler-wallet-core/src/crypto/workers/cryptoApi.ts
@@ -42,6 +42,7 @@ import {
   PlanchetCreationResult,
   PlanchetCreationRequest,
   DepositInfo,
+  MakeSyncSignatureRequest,
 } from "../../types/walletTypes";
 
 import * as timer from "../../util/timer";
@@ -455,4 +456,8 @@ export class CryptoApi {
   benchmark(repetitions: number): Promise<BenchmarkResult> {
     return this.doRpc<BenchmarkResult>("benchmark", 1, repetitions);
   }
+
+  makeSyncSignature(req: MakeSyncSignatureRequest): Promise<string> {
+    return this.doRpc<string>("makeSyncSignature", 3, req);
+  }
 }
diff --git a/packages/taler-wallet-core/src/crypto/workers/cryptoImplementation.ts b/packages/taler-wallet-core/src/crypto/workers/cryptoImplementation.ts
index 46ac7c8a6..41836fdfa 100644
--- a/packages/taler-wallet-core/src/crypto/workers/cryptoImplementation.ts
+++ b/packages/taler-wallet-core/src/crypto/workers/cryptoImplementation.ts
@@ -43,6 +43,7 @@ import {
   PlanchetCreationResult,
   PlanchetCreationRequest,
   DepositInfo,
+  MakeSyncSignatureRequest,
 } from "../../types/walletTypes";
 import { AmountJson, Amounts } from "../../util/amounts";
 import * as timer from "../../util/timer";
@@ -85,6 +86,7 @@ enum SignaturePurpose {
   WALLET_COIN_LINK = 1204,
   EXCHANGE_CONFIRM_RECOUP = 1039,
   EXCHANGE_CONFIRM_RECOUP_REFRESH = 1041,
+  SYNC_BACKUP_UPLOAD = 1450,
 }
 
 function amountToBuffer(amount: AmountJson): Uint8Array {
@@ -589,4 +591,20 @@ export class CryptoImplementation {
       },
     };
   }
+
+  makeSyncSignature(req: MakeSyncSignatureRequest): string {
+    const hNew = decodeCrock(req.newHash);
+    let hOld: Uint8Array;
+    if (req.oldHash) {
+      hOld = decodeCrock(req.oldHash);
+    } else {
+      hOld = new Uint8Array(64);
+    }
+    const sigBlob = new SignaturePurposeBuilder(SignaturePurpose.SYNC_BACKUP_UPLOAD)
+      .put(hOld)
+      .put(hNew)
+      .build();
+    const uploadSig = eddsaSign(sigBlob, decodeCrock(req.accountPriv));
+    return encodeCrock(uploadSig);
+  }
 }
-- 
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