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class CryptAES{ protected
$cipher = MCRYPT_RIJNDAEL_128; protected
$mode = MCRYPT_MODE_ECB; protected
$pad_method = NULL; protected
$secret_key = ‘‘; protected
$iv = ‘‘; public
function set_cipher($cipher){ $this->cipher = $cipher; } public
function set_mode($mode){ $this->mode = $mode; } public
function set_iv($iv){ $this->iv = $iv; } public
function set_key($key){ $this->secret_key = $key; } public
function require_pkcs5(){ $this->pad_method = ‘pkcs5‘; } protected
function pad_or_unpad($str, $ext){ if
( is_null($this->pad_method) ){ return
$str; }else{ $func_name
= __CLASS__
. ‘::‘ . $this->pad_method . ‘_‘
. $ext . ‘pad‘; if
( is_callable($func_name) ){ $size
= mcrypt_get_block_size($this->cipher, $this->mode); return
call_user_func($func_name, $str, $size); } } return
$str; } protected
function pad($str){ return
$this->pad_or_unpad($str, ‘‘); } protected
function unpad($str){ return
$this->pad_or_unpad($str, ‘un‘); } public
function encrypt($str){ $str
= $this->pad($str); $td
= mcrypt_module_open($this->cipher, ‘‘, $this->mode, ‘‘); if
( empty($this->iv) ){ $iv
= @mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_RAND); }else{ $iv
= $this->iv; } mcrypt_generic_init($td, $this->secret_key, $iv); $cyper_text
= mcrypt_generic($td, $str); $rt=base64_encode($cyper_text); //$rt = bin2hex($cyper_text); mcrypt_generic_deinit($td); mcrypt_module_close($td); return
$rt; } public
function decrypt($str){ $td
= mcrypt_module_open($this->cipher, ‘‘, $this->mode, ‘‘); if
( empty($this->iv) ){ $iv
= @mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_RAND); }else{ $iv
= $this->iv; } mcrypt_generic_init($td, $this->secret_key, $iv); //$decrypted_text = mdecrypt_generic($td, self::hex2bin($str)); $decrypted_text
= mdecrypt_generic($td, base64_decode($str)); $rt
= $decrypted_text; mcrypt_generic_deinit($td); mcrypt_module_close($td); return
$this->unpad($rt); } public
static function hex2bin($hexdata) { $bindata
= ‘‘; $length
= strlen($hexdata); for
($i=0; $i
< $length; $i
+= 2){ $bindata
.= chr(hexdec(substr($hexdata, $i, 2))); } return
$bindata; } public
static function pkcs5_pad($text, $blocksize){ $pad
= $blocksize
- (strlen($text) % $blocksize); return
$text . str_repeat(chr($pad), $pad); } public
static function pkcs5_unpad($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); }} |
原文: http://alunblog.duapp.com/?p=17
php与java通用AES加密解密算法, php类,布布扣,bubuko.com
原文：http://www.cnblogs.com/LinJiangL/p/3602127.html