feat: add support for sip018

closes #225

Author: beguene

.changeset/cuddly-rabbits-reply.md

@@ -0,0 +1,5 @@
+---
+'@stacks/connect': patch
+---
+
+Add better support for SIP-018 signing structured data

packages/connect/package.json

@@ -29,7 +29,7 @@
     "@stacks/connect-ui": "5.5.0",
     "@stacks/network": "4.2.1",
     "@stacks/prettier-config": "0.0.8",
-    "@stacks/transactions": "4.2.1",
+    "@stacks/transactions": "4.3.0-beta.1",
     "bn.js": "^5.2.0",
     "buffer": "6.0.3",
     "jsontokens": "^3.0.0",

packages/connect/src/signature/structuredData.ts

@@ -23,10 +23,12 @@ async function generateTokenAndOpenPopup<T extends StructuredDataSignatureOption
 
 async function signPayload(payload: StructuredDataSignaturePayload, privateKey: string) {
   const tokenSigner = new TokenSigner('ES256k', privateKey);
+
   // eslint-disable-next-line @typescript-eslint/no-unnecessary-type-assertion
   return tokenSigner.signAsync({
     ...payload,
     message: serializeCV(payload.message).toString('hex'),
+    domain: serializeCV(payload.domain).toString('hex'),
   } as any);
 }
 

packages/connect/src/types/index.ts

@@ -2,3 +2,4 @@ export * from './provider';
 export * from './auth';
 export * from './transactions';
 export * from './signature';
+export * from './structuredDataSignature';

packages/connect/src/types/structuredDataSignature.ts

@@ -8,10 +8,12 @@ import {
 
 export interface StructuredDataSignatureRequestOptions extends CommonSignatureRequestOptions {
   message: ClarityValue;
+  domain: ClarityValue;
 }
 
 export interface StructuredDataSignatureOptions {
   message: ClarityValue;
+  domain: ClarityValue;
   onFinish?: SignatureFinished;
   onCancel?: SignatureCanceled;
 }
@@ -23,4 +25,5 @@ export type StructuredDataSignaturePopup = {
 
 export interface StructuredDataSignaturePayload extends CommonSignaturePayload {
   message: ClarityValue;
+  domain: ClarityValue;
 }