PHP的des加密+ ECB方式+PKCS5 補齊

PHP的des加密+ ECB模式+PKCS5 補齊

/** *  * 加密函數 * 演算法：des * 加密模式：ecb * 補齊方法：PKCS5 *  * @param unknown_type $input */function encryptDesEcbPKCS5($input, $key) {     $size = mcrypt_get_block_size('des', 'ecb');     $input = pkcs5_pad($input, $size);         $td = mcrypt_module_open('des', '', 'ecb', '');     //$iv = mcrypt_create_iv (mcrypt_enc_get_iv_size($td), MCRYPT_RAND);     $iv = 0;    mcrypt_generic_init($td, $key, $iv);     $data = mdecrypt_generic ($td, $input);     mcrypt_generic_deinit($td);     mcrypt_module_close($td);     //$data = base64_encode($data);     return $data; } /** * 解密函數 * 演算法：des * 加密模式：ecb * 補齊方法：PKCS5 * @param unknown_type $input */function decryptDesEcbPKCS5($input, $key) {     $size = mcrypt_get_block_size('des', 'ecb');        $td = mcrypt_module_open('des', '', 'ecb', '');     $iv = 0;    mcrypt_generic_init($td, $key, $iv);     $data = mcrypt_generic($td, $input);     mcrypt_generic_deinit($td);     mcrypt_module_close($td);     $data = pkcs5_unpad($data, $size);     //$data = base64_encode($data);     return $data; } function pkcs5_pad ($text, $blocksize) {     $pad = $blocksize - (strlen($text) % $blocksize);     return $text . str_repeat(chr($pad), $pad); } function pkcs5_unpad($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); } $str = 'test crypt';$key = 'jack11';$res = encryptDesEcbPKCS5($str, $key);echo "$res\n";$deRes = decryptDesEcbPKCS5($res, $key);echo "\n$deRes\n";

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PHP的ＤＥＳ加密的補齊比較特殊，而且不能指定

http://www.herongyang.com/Cryptography/DES-PHP-Block-Padding-in-mcrypt.html

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