chore: add util

ava-labs · Nov 14, 2024 · cba36c9 · cba36c9
1 parent 01c8574
commit cba36c9
Showing 1 changed file with 18 additions and 0 deletions.
diff --git a/examples/p-chain/etna/utils/addSignatureToAllCred.ts b/examples/p-chain/etna/utils/addSignatureToAllCred.ts
@@ -0,0 +1,18 @@
+import { secp256k1, type UnsignedTx } from '../../../../src';
+
+export const addSigToAllCreds = async (
+  unsignedTx: UnsignedTx,
+  privateKey: Uint8Array,
+) => {
+  const unsignedBytes = unsignedTx.toBytes();
+  const publicKey = secp256k1.getPublicKey(privateKey);
+
+  if (!unsignedTx.hasPubkey(publicKey)) {
+    return;
+  }
+  const signature = await secp256k1.sign(unsignedBytes, privateKey);
+
+  for (let i = 0; i < unsignedTx.getCredentials().length; i++) {
+    unsignedTx.addSignatureAt(signature, i, 0);
+  }
+};