php blowfish加密解密算法

PHP Blowfish 算法的加密解密，供大家参考，具体内容如下

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);
 }
}

BlowFish加密算法在php的使用第二例

以上就是本文的全部内容，希望对大家学习php程序设计有所帮助。