如何解决需要Similler Java代码进行php加密脚本
这应该做。
public static byte[] encrypt(byte[] decrypted, byte[] keyvalue) throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException{
MessageDigest sha256 = MessageDigest.getInstance("SHA-256");
byte[] key = sha256.digest(keyvalue);
MessageDigest md5 = MessageDigest.getInstance("MD5");
byte[] checksum = md5.digest(decrypted);
//The length of the value to encrypt must be a multiple of 16.
byte[] decryptedAndChecksum = new byte[(decrypted.length + md5.getDigestLength() + 15) / 16 * 16];
System.arraycopy(decrypted, 0, decryptedAndChecksum, 0, decrypted.length);
System.arraycopy(checksum, 0, decryptedAndChecksum, decrypted.length, checksum.length);
//The remaining bytes of decryptedAndChecksum stay as 0 (default byte value) because PHP pads with 0's.
SecureRandom rnd = new SecureRandom();
byte[] iv = new byte[16];
rnd.nextBytes(iv);
IvParameterSpec ivSpec = new IvParameterSpec(iv);
Cipher cipher = Cipher.getInstance("AES/CBC/nopadding");
cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(key, "AES"), ivSpec);
byte[] encrypted = Base64.encodeBase64(cipher.doFinal(decryptedAndChecksum));
byte[] ivBase64 = Base64.encodeBase64String(iv).substring(0, 22).getBytes();
byte[] output = new byte[encrypted.length + ivBase64.length];
System.arraycopy(ivBase64, 0, output, 0, ivBase64.length);
System.arraycopy(encrypted, 0, output, ivBase64.length, encrypted.length);
return output;
}
Java中的MCRYPT_RIJNDAEL_128和MCRYPT_MODE_CBC等效于AES / CBC /
nopadding。您还需要一个用于Base64编码的实用程序,以上代码Base64
在Apache Codec库中使用。
另外,由于加密密钥是256位,因此您将需要 。这些可以从Oracle网站下载。
最后,请注意ntoskrnl的警告。这种加密确实可以更好,不要从PHP手册中复制粘贴。
解决方法
我有一个PHP加密功能。我需要一个Java计数器部分。由于我对PHP的了解有限,因此无法理解。有人会两种语言,请帮忙。
PHP代码:
function encrypt($decrypted,$keyvalue) {
// Build a 256-bit $key which is a SHA256 hash of $keyvalue.
$key = hash('SHA256',$keyvalue,true);
// Build $iv and $iv_base64. We use a block size of 128 bits (AES compliant) and CBC mode. (Note: ECB mode is inadequate as IV is not used.)
srand(); $iv = mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128,MCRYPT_MODE_CBC),MCRYPT_RAND);
if (strlen($iv_base64 = rtrim(base64_encode($iv),'=')) != 22) return false;
// Encrypt $decrypted and an MD5 of $decrypted using $key. MD5 is fine to use here because it's just to verify successful decryption.
$encrypted = base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_128,$key,$decrypted . md5($decrypted),MCRYPT_MODE_CBC,$iv));
// We're done!
return $iv_base64 . $encrypted;
}
在此先感谢Aniruddha
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