1.[代码][PHP]代码

/**

* php blowfish 算法

* Class blowfish

*/

class blowfish

{

//key

private $key256 = '1234567890123456ABCDEFGHIJKLMNOP';

private $key128 = '1234567890123456';

//向量

public $iv = 0;

function __construct(){

$this->iv = substr($this->key256, 0, 16);

}

/**

* blowfish + cbc模式 + pkcs5补码 加密

* @param string $str 需要加密的数据

* @return string 加密后base64加密的数据

*/

public function blowfish_cbc_pkcs5_encrypt($str)

{

$cipher = mcrypt_module_open(MCRYPT_BLOWFISH, '', MCRYPT_MODE_CBC, '');

//pkcs5补码

$size = mcrypt_get_block_size(MCRYPT_BLOWFISH, MCRYPT_MODE_CBC);

$str = $this->pkcs5_pad($str, $size);

if (mcrypt_generic_init($cipher, $this->key256, $this->iv) != -1)

{

$cipherText = mcrypt_generic($cipher, $str);

mcrypt_generic_deinit($cipher);

return base64_encode($cipherText);

}

mcrypt_module_close($cipher);

}

/**

* blowfish + cbc模式 + pkcs5 解密 去补码

* @param string $str 加密的数据

* @return string 解密的数据

*/

public function blowfish_cbc_pkcs5_decrypt($str)

{

$cipher = mcrypt_module_open(MCRYPT_BLOWFISH, '', MCRYPT_MODE_CBC, '');

if (mcrypt_generic_init($cipher, $this->key256, $this->iv) != -1)

{

$cipherText = mdecrypt_generic($cipher, base64_decode($str));

mcrypt_generic_deinit($cipher);

return $this->pkcs5_unpad($cipherText);

}

mcrypt_module_close($cipher);

}

private function pkcs5_pad($text, $blocksize){

$pad = $blocksize - (strlen ( $text ) % $blocksize);

return $text . str_repeat ( chr ( $pad ), $pad );

}

private function pkcs5_unpad($str){

$pad = ord($str[($len = strlen($str)) - 1]);

return substr($str, 0, strlen($str) - $pad);

}

}