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  • PHP DES 加解密

    代码很简单,如下:

    <?php
    
    $key = 'very important data';
    function jiami($key, $str)
    {
        /* Open module, and create IV */
        $td = mcrypt_module_open('des', '', 'ecb', '');
        //$td = mcrypt_module_open(MCRYPT_DES, '', MCRYPT_MODE_CBC, '');
        //$td = mcrypt_module_open('des', '', 'cbc', '');
        $key = substr($key, 0, mcrypt_enc_get_key_size($td));
        $iv_size = mcrypt_enc_get_iv_size($td);
        $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);
    
        /* Initialize encryption handle */
        if (mcrypt_generic_init($td, $key, $iv) === -1)
        {
            return FALSE;
        }
    
        /* Encrypt data */
        $c_t = mcrypt_generic($td, $str);
    
        /* Clean up */
        mcrypt_generic_deinit($td);
        mcrypt_module_close($td);
    
        return $c_t;
    }
    
    function jiemi($key, $str)
    {
        /* Open module, and create IV */
        $td = mcrypt_module_open('des', '', 'ecb', '');
        //$td = mcrypt_module_open(MCRYPT_DES, '', MCRYPT_MODE_CBC, '');
        //$td = mcrypt_module_open('des', '', 'cbc', '');
        $key = substr($key, 0, mcrypt_enc_get_key_size($td));
        $iv_size = mcrypt_enc_get_iv_size($td);
        $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);
    
        /* Initialize encryption handle */
        if (mcrypt_generic_init($td, $key, $iv) === -1)
        {
            return FALSE;
        }
    
        /* Reinitialize buffers for decryption */
        $p_t = mdecrypt_generic($td, $str);
    
        /* Clean up */
        mcrypt_generic_deinit($td);
        mcrypt_module_close($td);
    
        return trim($p_t);
    }
    
    $str = 'hello world!';
    echo 'key:' . $key . '<br>';
    echo 'str:' . $str . '<br>';
    
    $jiami = jiami($key, $str);
    echo '加密:' . $jiami . '<br>';
    
    file_put_contents('jiamiqian.txt', $str);
    file_put_contents('jiamihou.txt', $jiami);
    
    $jiemi = jiemi($key, $jiami);
    echo '解密:' . $jiemi . '<br>';
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  • 原文地址:https://www.cnblogs.com/zjfree/p/4863714.html
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