feat: adds mav2 webauthn signer

account-kit/smart-contracts/src/ma-v2/account/nativeSMASigner.ts

@@ -14,6 +14,7 @@ import {
   packUOSignature,
   pack1271Signature,
   DEFAULT_OWNER_ENTITY_ID,
+  SignatureType,
 } from "../utils.js";
 /**
  * Creates an object with methods for generating a dummy signature, signing user operation hashes, signing messages, and signing typed data.
@@ -82,6 +83,7 @@ export const nativeSMASigner = (
           primaryType: "ReplaySafeHash",
         }),
         entityId: DEFAULT_OWNER_ENTITY_ID,
+        signatureType: SignatureType.EOA,
       });
     },
 
@@ -115,6 +117,7 @@ export const nativeSMASigner = (
               primaryType: "ReplaySafeHash",
             }),
             entityId: DEFAULT_OWNER_ENTITY_ID,
+            signatureType: SignatureType.EOA,
           });
     },
   };

account-kit/smart-contracts/src/ma-v2/modules/single-signer-validation/signer.ts

@@ -12,7 +12,11 @@ import {
 } from "viem";
 import { getDefaultSingleSignerValidationModuleAddress } from "../utils.js";
 
-import { packUOSignature, pack1271Signature } from "../../utils.js";
+import {
+  packUOSignature,
+  pack1271Signature,
+  SignatureType,
+} from "../../utils.js";
 /**
  * Creates an object with methods for generating a dummy signature, signing user operation hashes, signing messages, and signing typed data.
  *
@@ -84,6 +88,7 @@ export const singleSignerMessageSigner = (
           primaryType: "ReplaySafeHash",
         }),
         entityId,
+        signatureType: SignatureType.EOA,
       });
     },
 
@@ -121,6 +126,7 @@ export const singleSignerMessageSigner = (
         : pack1271Signature({
             validationSignature,
             entityId,
+            signatureType: SignatureType.EOA,
           });
     },
   };

account-kit/smart-contracts/src/ma-v2/modules/webauthn-validation/module.ts

@@ -0,0 +1,28 @@
+import { encodeAbiParameters, type Hex } from "viem";
+
+export const WebAuthnValidationModule = {
+  encodeOnInstallData: (args: {
+    entityId: number;
+    x: bigint;
+    y: bigint;
+  }): Hex => {
+    const { entityId, x, y } = args;
+    return encodeAbiParameters(
+      [{ type: "uint32" }, { type: "uint256" }, { type: "uint256" }],
+      [entityId, x, y]
+    );
+  },
+
+  encodeOnUninstallData: (args: { entityId: number }): Hex => {
+    const { entityId } = args;
+
+    return encodeAbiParameters(
+      [
+        {
+          type: "uint32",
+        },
+      ],
+      [entityId]
+    );
+  },
+};

account-kit/smart-contracts/src/ma-v2/modules/webauthn-validation/signer.ts

@@ -0,0 +1,24 @@
+// Assume:
+// const webauthnnSigner = () => ({
+//     sign: async (message: string): string => "0x" /** as WebauthnAuthn */
+//     signTypedData: async (message: TypedDataThing): string => "0x" /** as WebauthnAuthn */
+//   })
+// where all methods on webauthnSigner return validationSignature as Hex
+//
+// TODO: write webauthnSigner
+
+import type { Address, Chain, Hex } from "viem";
+import { pack1271Signature, SignatureType } from "../../utils.js";
+
+export const webauthnMessageSigner = (
+  validationSignature: Hex,
+  chain: Chain,
+  accountAddress: Address,
+  entityId: number
+) => {
+  return pack1271Signature({
+    validationSignature,
+    entityId,
+    signatureType: SignatureType.NONE,
+  });
+};

account-kit/smart-contracts/src/ma-v2/utils.ts

@@ -19,10 +19,15 @@ export type PackUOSignatureParams = {
   validationSignature: Hex;
 };
 
+export enum SignatureType {
+  EOA = "0x00",
+  NONE = "",
+}
 // TODO: direct call validation 1271
 export type Pack1271SignatureParams = {
   validationSignature: Hex;
   entityId: number;
+  signatureType: SignatureType;
 };
 
 // Signature packing utility for user operations
@@ -37,14 +42,22 @@ export const packUOSignature = ({
 export const pack1271Signature = ({
   validationSignature,
   entityId,
+  signatureType,
 }: Pack1271SignatureParams): Hex => {
-  return concat([
-    "0x00",
-    toHex(entityId, { size: 4 }),
-    "0xFF",
-    "0x00", // EOA type signature
-    validationSignature,
-  ]);
+  return signatureType
+    ? concat([
+        "0x00",
+        toHex(entityId, { size: 4 }),
+        "0xFF",
+        signatureType,
+        validationSignature,
+      ])
+    : concat([
+        "0x00",
+        toHex(entityId, { size: 4 }),
+        "0xFF",
+        validationSignature,
+      ]);
 };
 
 export const getDefaultMAV2FactoryAddress = (chain: Chain): Address => {