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<?php/*** PHP版DES加解密类* 可与java的DES(DESede/CBC/PKCS5Padding)加密方式兼容**/class CryptDes { var
$key; var
$iv; function
CryptDes($key, $iv){ $this->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?> |
原文：http://www.cnblogs.com/juzilangren/p/3593788.html