Question

我正在尝试解码十六进制字符串并使用aes算法对其进行加密。但是当它在java中通过相同的算法时会给出不同的结果。但是通过hex2bin（）传递数据并打印其输出然后将其用作数据会得到正确的结果。为什么？

这是我正在使用的PHP代码片段::

<?php

$data = hex2str("ce4f5bf05a57b6f9e0d7df628d266d66");
//$data = pack('H*', "ce4f5bf05a57b6f9e0d7df628d266d66");
echo "data:".$data."  length:".strlen($data).PHP_EOL;
$data2 = "?O[?ZW?????b?&mf";
echo "data2:".$data2."  length:".strlen($data2).PHP_EOL;

if (strcmp($data,$data2)) {
    echo "Both are equal".PHP_EOL;
} else {
    echo "Both are unequal".PHP_EOL;
}


$key = 'mysaltmysalt1234';
$blocksize = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, 'ecb');
$data = pkcs5_pad($data, $blocksize);
$data2 = pkcs5_pad($data2, $blocksize);
echo "type data -- " . gettype($data).PHP_EOL;
echo "type data 2 -- ". gettype($data2).PHP_EOL;
echo "encoding data --" . mb_detect_encoding($data).PHP_EOL;
echo "encoding data 2 -- ". mb_detect_encoding($data2).PHP_EOL;
echo "data:".$data."  length:".strlen($data).PHP_EOL;
echo "data2:".$data2."  length:".strlen($data2).PHP_EOL;
echo "encrypted data : ".base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key, $data, MCRYPT_MODE_ECB)).PHP_EOL;
echo "encrypted data2 : ".base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key, $data2, MCRYPT_MODE_ECB)).PHP_EOL;
die;

function pkcs5_pad($text, $blocksize) {
    $pad = $blocksize - (strlen($text) % $blocksize);
    return $text . str_repeat(chr($pad), $pad);
} 

function hex2str($hex) {
    $str = '';
    for($i=0;$i<strlen($hex);$i+=2) $str .= chr(hexdec(substr($hex,$i,2)));
    return $str;
}

输出 - ＆gt;

data:?O[?ZW?????b?&mf  length:16
data2:?O[?ZW?????b?&mf  length:16
Both are equal
type data -- string
type data 2 -- string
encoding data --UTF-8
encoding data 2 -- UTF-8
data:?O[?ZW?????b?&mf  length:32
data2:?O[?ZW?????b?&mf  length:32
encrypted data : SWDBVA282EY9qXkpe4vuFz+prMZrefR6nymIB3KQpf0=
encrypted data2 : STICb3fdCrutwEy6cg5/sD+prMZrefR6nymIB3KQpf0=

Java代码 -

import javax.crypto.spec.SecretKeySpec;
import javax.xml.bind.DatatypeConverter;
import javax.crypto.Cipher;
import java.util.Base64;
import java.security.MessageDigest;

public class HelloWorld
{
  public static void main(String[] args) {
    String keyhex,salt,salto,keystr;
    salt = "mysaltmysalt1234";
    keyhex = "ce4f5bf05a57b6f9e0d7df628d266d66";
    byte[] binkey = DatatypeConverter.parseHexBinary(keyhex);
    keystr = new String(binkey);
    salto = encrypt(salt.getBytes(), keystr);
    System.out.println(salto);
  }



  public static String encrypt(byte[] key,String inputString) {
    try
    {
      SecretKeySpec secretKeySpec = new SecretKeySpec(key,
 "AES");
      Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
      cipher.init(1, secretKeySpec);
      byte[] aBytes = cipher.doFinal(inputString.getBytes());
      String base64 = new String(Base64.getEncoder().encode(aBytes));
      return base64; 
    } catch(Exception ex) {
        System.out.println("Exception occured in encrypt : "+ex.toString());
    }
    return null; 
  }

}

Java代码输出：STICb3fdCrutwEy6cg5 / sD + prMZrefR6nymIB3KQpf0 =

Aes加密给PHP带来了不同的结果？

0 个答案: