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AztecProtocol · Apr 12, 2024 · c2f8c68 · c2f8c68
1 parent 393fbee
commit c2f8c68
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Showing 3 changed files with 7 additions and 6 deletions.
diff --git a/barretenberg/ts/src/barretenberg/poseidon.test.ts b/barretenberg/ts/src/barretenberg/poseidon.test.ts
@@ -10,7 +10,7 @@ describe('poseidon sync', () => {
   });
 
   it('poseidonHash', () => {
-    const result = api.poseidonHash([new Fr(4n), new Fr(8n)], 7);
+    const result = api.poseidonHash([new Fr(4n), new Fr(8n)]);
     expect(result).toMatchSnapshot();
   });
 
@@ -19,7 +19,7 @@ describe('poseidon sync', () => {
     const fields = Array.from({ length: loops * 2 }).map(() => Fr.random());
     const t = new Timer();
     for (let i = 0; i < loops; ++i) {
-      api.poseidonHash([fields[i * 2], fields[i * 2 + 1]], 0);
+      api.poseidonHash([fields[i * 2], fields[i * 2 + 1]]);
     }
     const us = t.us() / loops;
     console.log(`Executed ${loops} hashes at an average ${us}us / hash`);

diff --git a/barretenberg/ts/src/barretenberg_api/index.ts b/barretenberg/ts/src/barretenberg_api/index.ts
@@ -607,8 +607,8 @@ export class BarretenbergApiSync {
     return out[0];
   }
 
-  poseidonHash(inputsBuffer: Fr[], hashIndex: number): Fr {
-    const inArgs = [inputsBuffer, hashIndex].map(serializeBufferable);
+  poseidonHash(inputsBuffer: Fr[]): Fr {
+    const inArgs = [inputsBuffer].map(serializeBufferable);
     const outTypes: OutputType[] = [Fr];
     const result = this.wasm.callWasmExport(
       'poseidon_hash',

diff --git a/yarn-project/foundation/src/crypto/poseidon/index.ts b/yarn-project/foundation/src/crypto/poseidon/index.ts
@@ -8,15 +8,16 @@ import { type Fieldable, serializeToFields } from '../../serialize/serialize.js'
  * @param input - The input fields to hash.
  * @param index - The separator index to use for the hash.
  * @returns The poseidon hash.
+ * TODO: enable index once the barretenberg API supports it
  */
-export function poseidonHash(input: Fieldable[], index = 0): Fr {
+export function poseidonHash(input: Fieldable[], _index = 0): Fr {
   const inputFields = serializeToFields(input);
   return Fr.fromBuffer(
     Buffer.from(
       BarretenbergSync.getSingleton()
         .poseidonHash(
           inputFields.map(i => new FrBarretenberg(i.toBuffer())), // TODO(#4189): remove this stupid conversion
-          index,
+          // index, // TODO: enable once the barretenberg API supports it
         )
         .toBuffer(),
     ),