fixture(eaddress): truncate hex string from decrypted bytes (leading 00)

The decrypted value could contain leading 0 bytes  (e.g. KMS returns 32 bytes serialized big int).
This behaviour triggers error with getAddress method from ethers which takes
hex string and return eth plain address (if hexstring > 40 digits)

src/sdk/decrypt.ts

@@ -28,5 +28,14 @@ export const decryptAddress = (
     keypair.publicKey,
     keypair.privateKey,
   );
-  return getAddress(bytesToHex(decrypted));
+
+let hexString = bytesToHex(decrypted);
+// Ensure hexString forms a valid 40-digit Ethereum address.
+// Truncate or pad with leading zeros as necessary to correct length issues.
+if (hexString.length > 40) {
+  hexString = hexString.substring(hexString.length - 40);
+} else {
+  hexString = hexString.padStart(40, '0');
+}
+  return getAddress(hexString);
 };

src/utils.ts

@@ -18,12 +18,8 @@ export const bytesToHex = function (byteArray: Uint8Array): string {
   if (!byteArray || byteArray?.length === 0) {
     return '0x0';
   }
-
-  const length = byteArray.length;
-
   const buffer = Buffer.from(byteArray);
-  const result = buffer.toString('hex');
-
+  const result = '0x' + buffer.toString('hex');
   return result;
 };
 
@@ -32,8 +28,6 @@ export const bytesToBigInt = function (byteArray: Uint8Array): bigint {
     return BigInt(0);
   }
 
-  const length = byteArray.length;
-
   const buffer = Buffer.from(byteArray);
   const result = toBigIntBE(buffer);