<?php
/*
* AES加密 2018.4.3
* demo:
* $aes = new \CryptAES();
$aes->set_key('aaa_key');
$aes->set_iv('bbb_iv');
$aes->require_pkcs5();
$encText = $aes->encrypt($plainText);
//$decString = $aes->decrypt($encText);
echo $encText;die;
*/
class CryptAES
{
protected $cipher = MCRYPT_RIJNDAEL_128; //秘钥长度
protected $mode = MCRYPT_MODE_CBC;//加密模式
protected $pad_method = NULL; //填充方式
protected $secret_key = ''; //密码
protected $iv = '';//偏移量
public function set_cipher($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);
}
}
?>
DES加密
<?php
namespace des;
class DES{
private $cipher, $key, $iv;
private $fill=OPENSSL_RAW_DATA; //填充方式
/**
* DesEdeCbc constructor.
* @param $cipher
* @param $key
* @param $iv
*/
public function __construct($key='12345678',$iv='12345678',$cipher='des-cbc') {
$this->cipher = $cipher;
$this->key= $key;
$this->iv = $iv;
}
/**
* des-cbc加密
* @param string $data 要被加密的数据
* @param string $key 加密使用的key
* @param string $iv 初始向量
*/
function encrypt($data){
return openssl_encrypt ($data,$this->cipher, $this->key,$this->fill, $this->iv);
}
/**
* des-cbc解密
* @param string $data 加密数据
* @param string $key 加密使用的key
* @param string $iv 初始向量
*/
function decrypt($data){
return openssl_decrypt ($data,$this->cipher, $this->key,$this->fill, $this->iv);
}
}