// Decrypt
        char[] decrypted = storage.decryptCredentials(encrypted);
        assertNotNull(decrypted, "Decrypted data should not be null");
        assertArrayEquals(plaintext, decrypted, "Decrypted should match original");

        // Clean up sensitive data
        Arrays.fill(plaintext, '\0');
        Arrays.fill(decrypted, '\0');
    }

    @Test

     * @return the decrypted data
     */
    public byte[] decrypto(final byte[] data) {
        final Cipher cipher = pollDecryptoCipher();
        byte[] decrypted;
        try {
            decrypted = cipher.doFinal(data);
        } catch (final IllegalBlockSizeException e) {
            throw new IllegalBlockSizeRuntimeException(e);
        } catch (final BadPaddingException e) {

		return nil, err
	}
	return w, nil
}

// DecryptBlocksReader - decrypts multipart parts, while implementing
// a io.Reader compatible interface.
type DecryptBlocksReader struct {
	// Source of the encrypted content that will be decrypted
	reader io.Reader
	// Current decrypter for the current encrypted data block
	decrypter io.Reader
	// Start sequence number
	startSeqNum uint32
	// Current part index

        assertTrue(encrypted.length >= 52, "Encrypted message should include transform header");

        // When - Decrypt
        byte[] decrypted = context.decryptMessage(encrypted);

        // Then - Verify decryption
        assertArrayEquals(plaintext, decrypted, "Decrypted message should match original plaintext");
    }

    @Test
    @DisplayName("Should handle concurrent encryption operations safely")

        assertNotNull(cryptographer);

        String plainText = "Hello, World!";
        String encrypted = cryptographer.encrypt(plainText);
        assertNotNull(encrypted);
        assertFalse(plainText.equals(encrypted));

        String decrypted = cryptographer.decrypt(encrypted);
        assertEquals(plainText, decrypted);
    }

    public void test_invertibleCryptography_withEmptyString() {

- Delete one/some master keys. From a security standpoint, this is equal to erasing all SSE-S3 encrypted objects protected by these master keys. All these objects are lost forever as they cannot be decrypted. Especially deleting all master keys at the KMS is equivalent to secure erasing all SSE-S3 encrypted objects.

	for i, test := range decryptObjectMetaTests {
		if encrypted, err := DecryptObjectInfo(&test.info, test.request); err != test.expErr {
			t.Errorf("Test %d: Decryption returned wrong error code: got %d , want %d", i, err, test.expErr)
		} else if _, enc := crypto.IsEncrypted(test.info.UserDefined); encrypted && enc != encrypted {
			t.Errorf("Test %d: Decryption thinks object is encrypted but it is not", i)
		} else if !encrypted && enc != encrypted {

			return
		}
		writeSuccessResponseJSON(w, resp)
		return
	}

	// 2. Verify that we can indeed decrypt the (encrypted) key
	decryptedKey, err := GlobalKMS.Decrypt(ctx, &kms.DecryptRequest{
		Name:           key.KeyID,
		Ciphertext:     key.Ciphertext,
		AssociatedData: kmsContext,
	})
	if err != nil {
		response.DecryptionErr = err.Error()

        }

        return new DERSequence(v).getEncoded();
    }

    /**
     * Creates a byte array representing the decrypted data part of a Kerberos ticket.
     * @param userName User principal name
     * @param userRealm User realm
     * @return A byte array representing the decrypted data
     * @throws IOException on encoding error
     */

// It will be decrypted if needed.
func (o *ObjectInfo) ArchiveInfo(h http.Header) []byte {
	if len(o.UserDefined) == 0 {
		return nil
	}
	z, ok := o.UserDefined[archiveInfoMetadataKey]
	if !ok {
		return nil
	}
	data := []byte(z)
	if v, ok := o.UserDefined[archiveTypeMetadataKey]; ok && v == archiveTypeEnc {
		decrypted, err := o.metadataDecrypter(h)(archiveTypeEnc, data)