我在客户端生成初始化向量，其中消息被加密，然后与解密向量一起发送到服务器。Java AES加密 - 在客户端和服务器之间发送初始化向量
客户端代码：
String key1 = "1234567812345678";
byte[] key2 = key1.getBytes();
SecretKeySpec secret = new SecretKeySpec(key2, "AES");
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, secret);
byte[] encrypted = cipher.doFinal(msg.getBytes(StandardCharsets.UTF_8));
byte[] iv = cipher.getIV();
String text = DatatypeConverter.printBase64Binary(encrypted);
System.out.println("Encrypted info: " + text);
bytebuf = ByteBuffer.allocate(1024);
bytebuf.clear();
// send iv
bytebuf.put(iv);
bytebuf.flip();
while(bytebuf.hasRemaining()) {
nBytes += client.write(bytebuf);
System.out.println("Iv sent!");
}
bytebuf.clear();
bytebuf.put(text.getBytes());
bytebuf.flip();
while(bytebuf.hasRemaining()) {
nBytes += client.write(bytebuf);
}
服务器代码
LOGGER.info("Confirming write");
byte[] iv = buf.array();
LOGGER.info("Data packet found as {}", iv);
LOGGER.info("Confirming write");
String data = new String(buf.array());
LOGGER.info("Data packet found as {}", data);
IvParameterSpec ivspec = new IvParameterSpec(iv);
String key1 = "1234567812345678";
byte[] key2 = key1.getBytes();
SecretKeySpec secret = new SecretKeySpec(key2, "AES");
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
cipher.init(Cipher.DECRYPT_MODE, secret, ivspec);
byte[] encrypted = DatatypeConverter.parseBase64Binary(data);
byte[] decrypted = cipher.doFinal(encrypted);
System.out.println("Decrypted Info: " + new String(decrypted, StandardCharsets.UTF_8));
我得到以下异常：
java.security.InvalidAlgorithmParameterException: Wrong IV length: must be 16 bytes long
看来，如果我分配例如1024个字节Ť ○缓冲液，32字节大小的[]被发送到服务器，而是一个1024字节大小的[]将在服务器上生成：
Data packet found as [-55, 119, 34, -19, -33, -20, -67, -77, 54, -111, 14, 94, 73, 98, 34, -7, 0, 0, 0, 0, 0, 0,..................
我是否连上了正确的道路？
+0
发现了问题，我将编辑回答解决方案 –
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