feat: new passkey signature format

includes the credential id, which is hopefully available
matter-labs · Feb 5, 2025 · e145cf9 · e145cf9
1 parent ba0fcdf
commit e145cf9
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Showing 3 changed files with 8 additions and 2 deletions.
diff --git a/packages/contracts b/packages/contracts
diff --git a/packages/sdk/src/client/passkey/client.ts b/packages/sdk/src/client/passkey/client.ts
@@ -31,7 +31,10 @@ export function createZksyncPasskeyClient<
         credentialPublicKey: parameters.credentialPublicKey,
       });
 
-      return passkeyHashSignatureResponseFormat(passkeySignature.passkeyAuthenticationResponse.response, parameters.contracts);
+      return passkeyHashSignatureResponseFormat(
+        passkeySignature.passkeyAuthenticationResponse.id,
+        passkeySignature.passkeyAuthenticationResponse.response,
+        parameters.contracts);
     },
   });
   const client = createClient<transport, chain, Account, rpcSchema>({

diff --git a/packages/sdk/src/utils/passkey.ts b/packages/sdk/src/utils/passkey.ts
@@ -305,6 +305,7 @@ function toArrayBuffer(data: string, isUrl: boolean) {
 };
 
 export function passkeyHashSignatureResponseFormat(
+  passkeyId: string,
   passkeyResponse: {
     authenticatorData: string;
     clientDataJSON: string;
@@ -320,11 +321,13 @@ export function passkeyHashSignatureResponseFormat(
       { type: "bytes" }, // authData
       { type: "bytes" }, // clientDataJson
       { type: "bytes32[2]" }, // signature (two elements)
+      { type: "string" }, // unique passkey id
     ],
     [
       toHex(base64UrlToUint8Array(passkeyResponse.authenticatorData)),
       toHex(base64UrlToUint8Array(passkeyResponse.clientDataJSON)),
       [toHex(signature.r), toHex(signature.s)],
+      toHex(base64UrlToUint8Array(passkeyId)),
     ],
   );
   const fullFormattedSig = encodeAbiParameters(