fix: added logs

src/index.ts

@@ -20,9 +20,12 @@ export class AwsKmsSigner extends ethers.Signer {
   }
 
   async getAddress(): Promise<string> {
+    console.log("getting Address");
     if (this.ethereumAddress === undefined) {
+      console.log("ethAddress is undefined");
       const key = await getPublicKey(this.kmsCredentials);
-      this.ethereumAddress = getEthereumAddress(key.PublicKey as Buffer);
+      console.log("received public key");
+      this.ethereumAddress = getEthereumAddress(Buffer.from(key.PublicKey));
     }
     return Promise.resolve(this.ethereumAddress);
   }

src/util/aws-kms-utils.ts

@@ -49,14 +49,21 @@ export function getEthereumAddress(publicKey: Buffer): string {
   // I used https://lapo.it/asn1js to figure out how to parse this
   // and defined the schema in the EcdsaPubKey object
   const res = EcdsaPubKey.decode(publicKey, "der");
+
+  console.log("decode success");
   let pubKeyBuffer: Buffer = res.pubKey.data;
 
   // The public key starts with a 0x04 prefix that needs to be removed
   // more info: https://www.oreilly.com/library/view/mastering-ethereum/9781491971932/ch04.html
   pubKeyBuffer = pubKeyBuffer.slice(1, pubKeyBuffer.length);
+  console.log("buffer slice success");
 
   const address = ethers.utils.keccak256(pubKeyBuffer); // keccak256 hash of publicKey
+  console.log("keccak success");
+
   const EthAddr = `0x${address.slice(-40)}`; // take last 20 bytes as ethereum adress
+
+  console.log("address slice success");
   return EthAddr;
 }