Updated license on one file.

Throwing error when payload cannot be decrypted.

Author: Fernando

src/core/crypto/Crypto.ts

@@ -178,8 +178,7 @@ export class Crypto {
             const decoded = Crypto._decode(recipientPrivate, senderPublic, payloadBuffer, tagAndIv);
             return decoded.toUpperCase();
         } catch (e) {
-            // To return empty string rather than error throwing if authentication failed
-            return '';
+            throw new Error(`Cannot decrypt payload. Error: ${e.message}`);
         }
     };
 

test/core/crypto/crypto.spec.ts

@@ -37,10 +37,10 @@ describe('crypto tests', () => {
         const encryptedMessage = Crypto.encode(Convert.uint8ToHex(sender.privateKey), Convert.uint8ToHex(recipient.publicKey), message);
         const senderPublic = '57F7DA205008026C776CB6AED843393F04CD458E0AA2D9F1D5F31A402072B2D6';
         const recipientPriv = '57F7DA205008026C776CB6AED843393F04CD458E0AA2D9F1D5F31A402072B2D6';
-        const expectedMessage = 'NEM is awesome !';
-        const decrypted = Crypto.decode(recipientPriv, senderPublic, encryptedMessage);
 
-        expect(decrypted).not.equal(convert.utf8ToHex(expectedMessage));
+        expect(() => Crypto.decode(recipientPriv, senderPublic, encryptedMessage)).to.throw(
+            'Cannot decrypt payload. Error: Unsupported state or unable to authenticate data',
+        );
     });
 
     describe('Encode & decode message edge-cases', () => {

test/model/message/RawMessage.spec.ts

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018 NEM
+ * (C) Symbol Contributors 2021
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.