后端开发|php教程
实例分析,加密解密,php
后端开发-php教程具体如下:
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<?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 .
;echo str: . $str .
;$jiami = jiami($key, $str);echo 加密: . $jiami .
;file_put_contents(jiamiqian.txt, $str);file_put_contents(jiamihou.txt, $jiami);$jiemi = jiemi($key, $jiami);echo 解密: . $jiemi .
;
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