Mengenai isu penyulitan PHP dan JAVA 3DES

Question

Saya ingin menulis kelas penyulitan dalam Java menggunakan PHP, tetapi saya melihat cara menulisnya dalam Java dan ia membuatkan saya sakit kepala yang teruk. Tidak logik sama sekali. Saya menjumpai kelas yang lengkap dan ingin merujuknya Selepas banyak percubaan, saya tidak dapat menterjemah kelas penyulitan yang saya muat naik ke dalam PHP. Tolong saya. Terima kasih.

/**

• 3Des membantu kelas

• */

kelas awam ThreeDESUtil {

private static final String Algorithm = "DESede"; // 定义 加密算法,可用
                                                    // DES,DESede,Blowfish
private static byte[] keybyte = { 0x11, 0x28, 0x4F, 0x58, (byte) 0x88,
        0x10, 0x40, 0x38, 0x28, 0x25, 0x79, 0x51, (byte) 0xCB, (byte) 0xDD,
        0x55, 0x66, 0x77, 0x29, 0x74, (byte) 0x98, 0x30, 0x40, 0x36,
        (byte) 0xE2 }; // 24字节的密钥

public static String encryptMode(String src) {
    String encrypt = null;
    try {
        byte[] ret = encryptMode(src.getBytes("UTF-8"));
        encrypt = new String(Base64.encode(ret));
        encrypt = encrypt.replaceAll("=", "Q");
    } catch (Exception e) {
        logger.error("ThreeDES Error");
    }
    return encrypt;
}



/**
 * 加密
 * 
 * @param src
 * @return
 */
private static byte[] encryptMode(byte[] src) {
    try {
        // 生成密钥
        SecretKey deskey = new SecretKeySpec(keybyte, Algorithm);
        // 加密
        Cipher c1 = Cipher.getInstance(Algorithm);
        c1.init(Cipher.ENCRYPT_MODE, deskey);
        return c1.doFinal(src);
    } catch (Exception e) {
        logger.error("ThreeDES Error");
    }
    return null;
}

// for test
public static void main(String[] args) {

    String szSrc = "12345678";

    String encoded = encryptMode(szSrc);
    System.out.println("加密后的字符串:" + encoded);
    //1xZ9Hssih5z0pegyf7aUcgQQ

}

}

Di atas ialah kelas java yang saya perlu tukar kepada PHP,

Dilampirkan artikel rujukan di bawah
/q/10...

Berikut ialah kod PHP yang saya tulis selepas rujukan.

<?php

$EasyCrypt3Des = new EasyCrypt3Des();
echo $EasyCrypt3Des->encrypt('12345678');
//java 结果 '1xZ9Hssih5z0pegyf7aUcgQQ';
exit;


class EasyCrypt3Des {
    private $_key = array("0x11", "0x28", "0x4F", "0x58", "0x88", "0x10", "0x40", "0x38", "0x28", "0x25", "0x79", "0x51","0xCB", "0xDD", "0x55", "0x66", "0x77", "0x29", "0x74", "0x98", "0x30", "0x40", "0x36", "0xE2");
    private $keyStr = "";
    public function __construct() {
        foreach($this->_key as $keyItem) {
            $this->keyStr .= $this->hexToStr($keyItem);
        }
    }

    public function encrypt($str) {
        $td = $this->gettd();
        $ret = mcrypt_generic($td,$str);
        mcrypt_generic_deinit($td);
        mcrypt_module_close($td);
        $result =  base64_encode($ret);
        return str_replace('=','Q',$result);
    }



    private function getiv() {
        return pack('H16','0000000000000000');
    }

    private function gettd() {
        $iv = $this->getiv();
        $td = mcrypt_module_open(MCRYPT_3DES, '', MCRYPT_MODE_ECB, '');
        mcrypt_generic_init($td, $this->keyStr,$iv);
        return $td;
    }

    private function hexToStr($hex){
        $string='';
        for ($i=0; $i < strlen($hex)-1; $i+=2){
            $string .= chr(hexdec($hex[$i].$hex[$i+1]));
        }
        return $string;
    }
}

Answer 1

Masalah telah diselesaikan, sila rujuk artikel sebelumnya:
1 Aksara yang disulitkan tidak ditukar kepada aksara, jadi ia tidak boleh dinyahsulit.
2 Rujuk pautan artikel yang saya siarkan, kelas PHP adalah universal. Anda boleh mengabaikan kod yang saya siarkan sebelum ini, saya akan menyusun satu lagi yang betul.

java

import java.security.Security;
import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;

kelas awam ThreeDES {

Algoritma String akhir statik peribadi = "DESede"; //Tentukan algoritma penyulitan, tersedia DES, DESede, Blowfish

//keybyte为加密密钥，长度为24字节
//src为被加密的数据缓冲区（源）
public static byte[] encryptMode(byte[] keybyte, byte[] src) {
   try {
        //生成密钥
        SecretKey deskey = new SecretKeySpec(keybyte, Algorithm);

        //加密
        Cipher c1 = Cipher.getInstance(Algorithm);
        c1.init(Cipher.ENCRYPT_MODE, deskey);
        return c1.doFinal(src);
    } catch (java.security.NoSuchAlgorithmException e1) {
        e1.printStackTrace();
    } catch (javax.crypto.NoSuchPaddingException e2) {
        e2.printStackTrace();
    } catch (java.lang.Exception e3) {
        e3.printStackTrace();
    }
    return null;
}

//keybyte为加密密钥，长度为24字节
//src为加密后的缓冲区
public static byte[] decryptMode(byte[] keybyte, byte[] src) {      
try {
        //生成密钥
        SecretKey deskey = new SecretKeySpec(keybyte, Algorithm);

        //解密
        Cipher c1 = Cipher.getInstance(Algorithm);
        c1.init(Cipher.DECRYPT_MODE, deskey);
        return c1.doFinal(src);
    } catch (java.security.NoSuchAlgorithmException e1) {
        e1.printStackTrace();
    } catch (javax.crypto.NoSuchPaddingException e2) {
        e2.printStackTrace();
    } catch (java.lang.Exception e3) {
        e3.printStackTrace();
    }
    return null;
}

//转换成十六进制字符串
public static String byte2hex(byte[] b) {
    String hs="";
    String stmp="";

    for (int n=0;n<b.length;n++) {
        stmp=(java.lang.Integer.toHexString(b[n] & 0XFF));
        if (stmp.length()==1) hs=hs+"0"+stmp;
        else hs=hs+stmp;
        if (n<b.length-1)  hs=hs+":";
    }
    return hs.toUpperCase();
}

public static void main(String[] args)
{
    //添加新安全算法,如果用JCE就要把它添加进去
    Security.addProvider(new com.sun.crypto.provider.SunJCE());

    final byte[] keyBytes = {0x11, 0x28, 0x4F, 0x58, (byte)0x88, 0x10, 0x40, 0x38
                           , 0x28, 0x25, 0x79, 0x51, (byte)0xCB, (byte)0xDD, 0x55, 0x66
                           , 0x77, 0x29, 0x74, (byte)0x98, 0x30, 0x40, 0x36, (byte)0xE2};    //24字节的密钥
    String szSrc = "12345678";
    
    System.out.println("加密前的字符串:" + szSrc);
    
    byte[] encoded = encryptMode(keyBytes, szSrc.getBytes());        
    System.out.println("加密后的字符串:" + new String(encoded));
    
    byte[] srcBytes = decryptMode(keyBytes, encoded);
    System.out.println("解密后的字符串:" + (new String(srcBytes)));
}

}

Kod di atas diambil sepenuhnya dari /q/10...

Berikut ialah kod PHP.

<?php

kelas EasyCrypt3Des {

private $_key = "";

public function __construct() {
    $keyItem = array(
        '0x11','0x28','0x4F','0x58','0x88','0x10','0x40','0x38','0x28','0x25','0x79','0x51',
        '0xCB','0xDD','0x55','0x66','0x77','0x29','0x74','0x98','0x30','0x40','0x36','0xE2'
    );
    foreach($keyItem as $kitem) {
        //转换成字符
        $this->_key .= chr($kitem);
    }
}

public function encrypt($str) {
    $td = $this->gettd();
    $ret = mcrypt_generic($td, $this->pkcs5_pad($str, 8));
    mcrypt_generic_deinit($td);
    mcrypt_module_close($td);
    return $this->strToHex($ret);
}

public function decrypt($str) {
    $td = $this->gettd();
    $ret = $this->pkcs5_unpad(mdecrypt_generic($td, $this->hexToStr($str)));
    mcrypt_generic_deinit($td);
    mcrypt_module_close($td);
    return $ret;
}

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

private function pkcs5_unpad($text) {
    $pad = ord($text{strlen($text) - 1});
    if ($pad > strlen($text)) {
        return false;
    }
    if (strspn($text, chr($pad), strlen($text) - $pad) != $pad) {
        return false;
    }
    return substr($text, 0, -1 * $pad);
}

private function getiv() {
    return pack('H16', '0000000000000000');
}

private function gettd() {
    $iv = $this->getiv();
    $td = mcrypt_module_open(MCRYPT_3DES, '', MCRYPT_MODE_ECB, '');
    mcrypt_generic_init($td, $this->_key, $iv);
    return $td;
}

private function strToHex($string){
    $hex = '';
    for ($i=0; $i<strlen($string); $i++){
        $ord = ord($string[$i]);
        $hexCode = dechex($ord);
        $hex .= substr('0'.$hexCode, -2);
    }
    return strToUpper($hex);
}

private function hexToStr($hex){
    $string='';
    for ($i=0; $i < strlen($hex)-1; $i+=2){
        $string .= chr(hexdec($hex[$i].$hex[$i+1]));
    }
    return $string;
}

}
$EasyCrypt3Des = EasyCrypt3Des baharu();
$kod = $EasyCrypt3Des->encrypt('12345678');
echo $code .'<br/>';
-Crypt; $3Descrypt $kod);
keluar;

Terutamanya terletak pada penukaran watak.