Question

我在java中有这个代码，我需要PHP中的等价物，我在.NET中也有这个代码并且工作完美，但我需要PHP。

public static String decrypt(String pValor) throws UnsupportedEncodingException {

    byte vBytesDecodificados[] = null;

    try {

        KeySpec vClave = new DESKeySpec("MyKey".getBytes("UTF-8"));
        SecretKey vClaveSecreta = SecretKeyFactory.getInstance("DES").generateSecret(vClave);

        IvParameterSpec iv = new IvParameterSpec(Hex.decodeHex("1234567890ABCDEF".toCharArray()));

        Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
        cipher.init(Cipher.DECRYPT_MODE, vClaveSecreta, iv);

        vBytesDecodificados = cipher.doFinal(Base64.decodeBase64(pValor.getBytes()));

    } catch (Exception e) {

    }

    return new String(vBytesDecodificados, "UTF-8");
}

public static String encrypt(String pValor) throws UnsupportedEncodingException {

    byte vBytesCodificados[] = null;

    try {

        KeySpec vClave = new DESKeySpec("MyKey".getBytes("UTF-8"));
        SecretKey vClaveSecreta = SecretKeyFactory.getInstance("DES").generateSecret(vClave);

        IvParameterSpec iv = new IvParameterSpec(Hex.decodeHex("1234567890ABCDEF".toCharArray()));

        Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
        cipher.init(Cipher.ENCRYPT_MODE, vClaveSecreta, iv);

        byte[] utf8 = pValor.getBytes("UTF8");
        byte[] enc = cipher.doFinal(utf8);
        vBytesCodificados = Base64.encodeBase64(enc);

    } catch (Exception e) {

    }

    return new String(vBytesCodificados, "UTF-8");
}

Answer 1

我已经知道使用此方法并不安全，但这是解决方案：

class Encriptacion {
    private $iv = '1234567890ABCDEF';
    private $key = 'MyKey';

    function encode($str) {
        $size = mcrypt_get_block_size(MCRYPT_DES, MCRYPT_MODE_CBC);
        $str = $this->pkcs5Pad($str, $size);
        $aaa = mcrypt_cbc(MCRYPT_DES, $this->key, $str, MCRYPT_ENCRYPT, $this->hex2bin($this->iv));
        $ret = base64_encode($aaa);
        return $ret;
    }

    function decode($str) {
        $str = base64_decode($str);
        $str = mcrypt_cbc(MCRYPT_DES, $this->key, $str, MCRYPT_DECRYPT, $this->hex2bin($this->iv));
        $str = $this->pkcs5Unpad($str);
        return $str;
    }

    function hex2bin($hexData) {
        $binData = "";
        for ($i = 0; $i < strlen($hexData); $i += 2) {
            $binData .= chr(hexdec(substr($hexData, $i, 2)));
        }
        return $binData;
    }

    function pkcs5Pad($text, $blocksize) {
        $pad = $blocksize - (strlen($text) % $blocksize);
        return $text . str_repeat(chr($pad), $pad);
    }

    function pkcs5Unpad($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);
    }
}

这是在PHP中等效的加密/解密功能？

1 个答案: