php des 加密解密

class DES

{

    var $key;

    var $iv; //偏移量

    function __construct($key)

{

        //key长度为8位,例如:1234abcd

        $this->key = $key;

        $this->iv = $key; //默认以$key 作为 iv

    }

    //加密

    function encrypt($str)

{

        $size = mcrypt_get_block_size(MCRYPT_DES, MCRYPT_MODE_CBC);

        $str = $this->pkcs5Pad($str, $size);

        return strtoupper(bin2hex(mcrypt_encrypt(MCRYPT_DES, $this->key, $str, MCRYPT_MODE_CBC, $this->iv)));

}

    //解密

    function decrypt($str)

{

        $strBin = $this->hex2bin(strtolower($str));

        $str = mcrypt_decrypt(MCRYPT_DES, $this->key, $strBin, MCRYPT_MODE_CBC, $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);

}

}

加密字符串：{"Version":"1.0.0.0","Token":"IW0CxVq1bABsy0tPjgKnCA==","RequestId":"5dc116a26128d","RequestTime":"2020-04-01T16:14:50","Message":{"OrderNoList":["DS191201093408476673"]}}

加密秘钥key：V9hUUEkL

加密后字符串：D9CC1E97735B1F86B6C158C6D3796D206A26D740C6F462494E3FCE0284D3F1DA22460008CC7179AFBA98404104AA89180CA6546A50DEC34FEC77F29B2640C988D0EA9E7A3DD35D88308F9BDF4289D6BE5B27E470FEC97337F7136E92E756EE10ADCC7E396517AE38A4B8ADE47CDE77E905FF76349715F443BAE383E91091DF492799CDBD7C2E2B583663DDB5A8860D6F5D494EC2651455BD190CEDDCD116B862BEC9E6123742A048CAAFEAA0BE1CDA49

解密后字符串：{"Version":"1.0.0.0","Token":"IW0CxVq1bABsy0tPjgKnCA==","RequestId":"5dc116a26128d","RequestTime":"2020-04-01T16:14:50","Message":{"OrderNoList":["DS191201093408476673"]}}