fix: correct enum typed data hashing (#1281)

Author: penovicp

__tests__/utils/typedData.test.ts

@@ -326,7 +326,7 @@ describe('typedData', () => {
 
     messageHash = getMessageHash(exampleEnum, exampleAddress);
     expect(messageHash).toMatchInlineSnapshot(
-      `"0x6e61abaf480b1370bbf231f54e298c5f4872f40a6d2dd409ff30accee5bbd1e"`
+      `"0x416b85b18063b1b3420ab709e9d5e35cb716691d397c5841ce7c5198ee30bf"`
     );
 
     expect(spyPedersen).not.toHaveBeenCalled();

src/utils/typedData.ts

@@ -357,11 +357,13 @@ export function encodeValue(
       if (revision === Revision.ACTIVE) {
         const [variantKey, variantData] = Object.entries(data as TypedData['message'])[0];
 
-        const parentType = types[ctx.parent as string].find((t) => t.name === ctx.key);
-        const enumType = types[(parentType as StarknetEnumType).contains];
+        const parentType = types[ctx.parent as string].find((t) => t.name === ctx.key)!;
+        const enumName = (parentType as StarknetEnumType).contains;
+        const enumType = types[enumName];
         const variantType = enumType.find((t) => t.name === variantKey) as StarknetType;
         const variantIndex = enumType.indexOf(variantType);
 
+        const typeHash = getTypeHash(types, enumName, revision);
         const encodedSubtypes = variantType.type
           .slice(1, -1)
           .split(',')
@@ -372,7 +374,7 @@ export function encodeValue(
           });
         return [
           type,
-          revisionConfiguration[revision].hashMethod([variantIndex, ...encodedSubtypes]),
+          revisionConfiguration[revision].hashMethod([typeHash, variantIndex, ...encodedSubtypes]),
         ];
       } // else fall through to default
       return [type, getHex(data as string)];