DES encryption and decryption packaging class implemented in PHP

不言
Release: 2023-03-29 14:10:01
Original
1348 people have browsed it

This article mainly introduces the DES encryption and decryption packaging class implemented by PHP. It analyzes the definition and usage skills of the PHP DES encryption and decryption packaging class in the form of a complete example. Friends in need can refer to the examples in this article.

Describes the DES encryption and decryption packaging class implemented by PHP. Share it with everyone for your reference, the details are as follows:

key = $key; $this->iv = $iv; } function encrypt($input){ $size = mcrypt_get_block_size(MCRYPT_DES,MCRYPT_MODE_CBC); //3DES加密将MCRYPT_DES改为MCRYPT_3DES $input = $this->pkcs5_pad($input, $size); //如果采用PaddingPKCS7,请更换成PaddingPKCS7方法。 $key = str_pad($this->key,8,'0'); //3DES加密将8改为24 $td = mcrypt_module_open(MCRYPT_DES, '', MCRYPT_MODE_CBC, ''); if( $this->iv == '' ) { $iv = @mcrypt_create_iv (mcrypt_enc_get_iv_size($td), MCRYPT_RAND); } else { $iv = $this->iv; } @mcrypt_generic_init($td, $key, $iv); $data = mcrypt_generic($td, $input); mcrypt_generic_deinit($td); mcrypt_module_close($td); $data = base64_encode($data);//如需转换二进制可改成 bin2hex 转换 return $data; } function decrypt($encrypted){ $encrypted = base64_decode($encrypted); //如需转换二进制可改成 bin2hex 转换 $key = str_pad($this->key,8,'0'); //3DES加密将8改为24 $td = mcrypt_module_open(MCRYPT_DES,'',MCRYPT_MODE_CBC,'');//3DES加密将MCRYPT_DES改为MCRYPT_3DES if( $this->iv == '' ) { $iv = @mcrypt_create_iv (mcrypt_enc_get_iv_size($td), MCRYPT_RAND); } else { $iv = $this->iv; } $ks = mcrypt_enc_get_key_size($td); @mcrypt_generic_init($td, $key, $iv); $decrypted = mdecrypt_generic($td, $encrypted); mcrypt_generic_deinit($td); mcrypt_module_close($td); $y=$this->pkcs5_unpad($decrypted); return $y; } function pkcs5_pad ($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 * $pad); } function PaddingPKCS7($data) { $block_size = mcrypt_get_block_size(MCRYPT_DES, MCRYPT_MODE_CBC);//3DES加密将MCRYPT_DES改为MCRYPT_3DES $padding_char = $block_size - (strlen($data) % $block_size); $data .= str_repeat(chr($padding_char),$padding_char); return $data; } } $des = new CryptDes("12345678","12345678");//(秘钥向量,混淆向量) echo $ret = $des->encrypt("1111");//加密字符串 ?>
Copy after login

Related recommendations:

Statistical data function implemented by PHP Detailed explanation

Example of website directory scanning index tool based on PHP

##

The above is the detailed content of DES encryption and decryption packaging class implemented in PHP. For more information, please follow other related articles on the PHP Chinese website!

source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template
About us Disclaimer Sitemap
php.cn:Public welfare online PHP training,Help PHP learners grow quickly!