PHP blowfish 加密解密函数

pkcs5_pad($str, $size); if (mcrypt_generic_init($cipher, $this->key, $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->key, $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); } }