add hash try for legacy

tests_zemu/try_legacy.mjs

@@ -4,6 +4,19 @@ import { ed25519 } from '@noble/curves/ed25519'
 import pkg from 'blakejs'
 const { blake2bFinal, blake2bInit, blake2bUpdate } = pkg
 
+async function verifySignature(signature, message, publicKey) {
+  const context = blake2bInit(32)
+  blake2bUpdate(context, message)
+  const hash = Buffer.from(blake2bFinal(context))
+
+  const valid = ed25519.verify(signature, hash, publicKey)
+  if (valid) {
+    console.log('Valid signature')
+  } else {
+    console.log('Invalid signature')
+  }
+}
+
 async function main() {
   const transport = await TransportNodeHid.default.open()
   const app = new Kda.default(transport);;
@@ -13,27 +26,30 @@ async function main() {
   const { publicKey } = await app.getPublicKey(PATH);
   console.log("Pubkey: ", publicKey.toString('hex'))
 
-
+ // Sign a transaction
+  console.log("Signing a transaction")
   const blob =
     '{"networkId":"mainnet01","payload":{"exec":{"data":{"ks":{"pred":"keys-all","keys":["368820f80c324bbc7c2b0610688a7da43e39f91d118732671cd9c7500ff43cca"]}},"code":"(coin.transfer-create \\"alice\\" \\"bob\\" (read-keyset \\"ks\\") 100.1)\\n(coin.transfer \\"bob\\" \\"alice\\" 0.1)"}},"signers":[{"pubKey":"6be2f485a7af75fedb4b7f153a903f7e6000ca4aa501179c91a2450b777bd2a7","clist":[{"args":["alice","bob",100.1],"name":"coin.TRANSFER"},{"args":[],"name":"coin.GAS"}]},{"pubKey":"368820f80c324bbc7c2b0610688a7da43e39f91d118732671cd9c7500ff43cca","clist":[{"args":["bob","alice",0.1],"name":"coin.TRANSFER"}]}],"meta":{"creationTime":1580316382,"ttl":7200,"gasLimit":1200,"chainId":"0","gasPrice":1.0e-5,"sender":"alice"},"nonce":"2020-01-29 16:46:22.916695 UTC"}'
-  const messageToSign = Buffer.from(blob)
+  let messageToSign = Buffer.from(blob)
   console.log(messageToSign.toString())
-  const signatureRequest = app.signTransaction(PATH, messageToSign);
+  let signatureRequest = app.signTransaction(PATH, messageToSign);
 
-  const signatureResponse = await signatureRequest
+  let signatureResponse = await signatureRequest
   console.log(signatureResponse.signature.toString('hex'))
 
-  const context = blake2bInit(32)
-  blake2bUpdate(context, messageToSign)
-  const hash = Buffer.from(blake2bFinal(context))
+  await verifySignature(signatureResponse.signature, messageToSign, publicKey)
 
-  // Now verify the signature
-  const valid = ed25519.verify(signatureResponse.signature, hash, publicKey)
-  if (valid) {
-    console.log('Valid signature')
-  } else {
-    console.log('Invalid signature')
-  }
+  // Sign a hash
+  console.log("Signing a hash")
+  messageToSign = 'ffd8cd79deb956fa3c7d9be0f836f20ac84b140168a087a842be4760e40e2b1c'
+  console.log(messageToSign.toString())
+  signatureRequest = app.signHash(PATH, messageToSign);
+
+  signatureResponse = await signatureRequest
+  console.log(signatureResponse.signature.toString('hex'))
+
+  await verifySignature(signatureResponse.signature, messageToSign, publicKey)
+
 }
 
 ;(async () => {