Fix: Revert vk hash to make snarkyjs compatible

CHANGELOG.md

@@ -15,13 +15,21 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
     _Security_ in case of vulnerabilities.
  -->
 
-## [Unreleased](https://github.com/o1-labs/snarkyjs/compare/161b69d602...HEAD)
+## [Unreleased](https://github.com/o1-labs/snarkyjs/compare/b1d8d5910...HEAD)
+
+> No unreleased changes yet
+
+## [0.12.1](https://github.com/o1-labs/snarkyjs/compare/161b69d602...b1d8d5910)
 
 ### Added
 
 - Added a method `createTestNullifier` to the Nullifier class for testing purposes. It is recommended to use mina-signer to create Nullifiers in production, since it does not leak the private key of the user. The `Nullifier.createTestNullifier` method requires the private key as an input _outside of the users wallet_. https://github.com/o1-labs/snarkyjs/pull/1026
 - Added `field.isEven` to check if a Field element is odd or even. https://github.com/o1-labs/snarkyjs/pull/1026
 
+### Fixed
+
+- Revert verification key hash change from previous release to stay compatible with the current testnet https://github.com/o1-labs/snarkyjs/pull/1032
+
 ## [0.12.0](https://github.com/o1-labs/snarkyjs/compare/eaa39dca0...161b69d602)
 
 ### Breaking Changes

package.json

@@ -1,7 +1,7 @@
 {
   "name": "snarkyjs",
   "description": "TypeScript framework for zk-SNARKs and zkApps",
-  "version": "0.12.0",
+  "version": "0.12.1",
   "license": "Apache-2.0",
   "homepage": "https://github.com/o1-labs/snarkyjs/",
   "keywords": [

src/lib/account_update.ts

@@ -18,21 +18,15 @@ import { UInt64, UInt32, Int64, Sign } from './int.js';
 import * as Mina from './mina.js';
 import { SmartContract } from './zkapp.js';
 import * as Precondition from './precondition.js';
-import {
-  dummyBase64Proof,
-  dummyVerificationKeyHash,
-  Empty,
-  Proof,
-  Prover,
-} from './proof_system.js';
+import { dummyBase64Proof, Empty, Proof, Prover } from './proof_system.js';
 import { Memo } from '../mina-signer/src/memo.js';
 import {
   Events,
   Actions,
 } from '../bindings/mina-transaction/transaction-leaves.js';
 import { TokenId as Base58TokenId } from './base58-encodings.js';
 import { hashWithPrefix, packToFields } from './hash.js';
-import { prefixes } from '../bindings/crypto/constants.js';
+import { mocks, prefixes } from '../bindings/crypto/constants.js';
 import { Context } from './global-context.js';
 import { assert } from './errors.js';
 import { MlArray } from './ml/base.js';
@@ -1808,8 +1802,9 @@ const Authorization = {
     signature ??= {};
     accountUpdate.body.authorizationKind.isSigned = Bool(true);
     accountUpdate.body.authorizationKind.isProved = Bool(false);
-    accountUpdate.body.authorizationKind.verificationKeyHash =
-      dummyVerificationKeyHash();
+    accountUpdate.body.authorizationKind.verificationKeyHash = Field(
+      mocks.dummyVerificationKeyHash
+    );
     accountUpdate.authorization = {};
     accountUpdate.lazyAuthorization = { ...signature, kind: 'lazy-signature' };
   },
@@ -1867,8 +1862,9 @@ const Authorization = {
   setLazyNone(accountUpdate: AccountUpdate) {
     accountUpdate.body.authorizationKind.isSigned = Bool(false);
     accountUpdate.body.authorizationKind.isProved = Bool(false);
-    accountUpdate.body.authorizationKind.verificationKeyHash =
-      dummyVerificationKeyHash();
+    accountUpdate.body.authorizationKind.verificationKeyHash = Field(
+      mocks.dummyVerificationKeyHash
+    );
     accountUpdate.authorization = {};
     accountUpdate.lazyAuthorization = { kind: 'lazy-none' };
   },

src/lib/account_update.unit-test.ts

@@ -9,7 +9,6 @@ import {
 } from '../index.js';
 import { Test } from '../snarky.js';
 import { expect } from 'expect';
-import { dummyVerificationKeyHash } from './proof_system.js';
 
 let address = PrivateKey.random().toPublicKey();
 
@@ -103,7 +102,7 @@ function createAccountUpdate() {
   let accountUpdate = createAccountUpdate();
   expect(
     accountUpdate.body.authorizationKind.verificationKeyHash.toString()
-  ).toEqual(dummyVerificationKeyHash().toString());
+  ).toEqual('0');
 }
 
 // does not throw an error if private key is missing unless if .send is executed

src/lib/field.ts

@@ -416,7 +416,7 @@ class Field {
     // check composition
     xDiv2.mul(2).add(isOdd).assertEquals(this);
 
-    return new Bool(isOddVar);
+    return new Bool(isOddVar).not();
   }
 
   /**

src/lib/field.unit-test.ts

@@ -115,6 +115,11 @@ equivalentVoid1(
   (x) => x.assertBool(),
   (x) => x === 0n || x === 1n || throwError('not boolean')
 );
+equivalent1(
+  (x) => x.isEven().toField(),
+  (x) => BigInt((x & 1n) === 0n),
+  SmallField
+);
 
 // non-constant field vars
 test(Random.field, (x0, assert) => {

src/lib/proof_system.ts

@@ -52,7 +52,6 @@ export {
   isAsFields,
   Prover,
   dummyBase64Proof,
-  dummyVerificationKeyHash,
 };
 
 type Undefined = undefined;
@@ -809,11 +808,6 @@ function dummyBase64Proof() {
   return withThreadPool(async () => Pickles.dummyBase64Proof());
 }
 
-function dummyVerificationKeyHash() {
-  let [, , hash] = Pickles.dummyVerificationKey();
-  return Field.fromBytes([...hash]);
-}
-
 // helpers for circuit context
 
 function Prover<ProverData>() {

src/mina-signer/src/sign-zkapp-command.unit-test.ts

@@ -272,10 +272,10 @@ console.log('to/from json, hashes & signatures are consistent! 🎉');
 function fixVerificationKey(a: AccountUpdate) {
   // ensure verification key is valid
   if (a.body.update.verificationKey.isSome === 1n) {
-    let [, data] = Pickles.dummyVerificationKey();
+    let [, data, hash] = Pickles.dummyVerificationKey();
     a.body.update.verificationKey.value = {
       data,
-      hash: Field(mocks.dummyVerificationKeyHash),
+      hash: Field.fromBytes([...hash]),
     };
   } else {
     a.body.update.verificationKey.value = {