You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
81 lines
1.7 KiB
PHP
81 lines
1.7 KiB
PHP
<?php
|
|
/**
|
|
* 加密工具类
|
|
*
|
|
* User: jiehua
|
|
* Date: 16/3/30
|
|
* Time: 下午3:25
|
|
*/
|
|
|
|
|
|
/**
|
|
* 加密方法
|
|
* @param string $str
|
|
* @return string
|
|
*/
|
|
function encrypt($str, $screct_key)
|
|
{
|
|
//AES, 128 模式加密数据 CBC
|
|
$screct_key = base64_decode($screct_key);
|
|
$str = trim($str);
|
|
$str = addPKCS7Padding($str);
|
|
|
|
//设置全0的IV
|
|
$iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC);
|
|
$iv = str_repeat("\0", $iv_size);
|
|
|
|
$encrypt_str = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $screct_key, $str, MCRYPT_MODE_CBC, $iv);
|
|
return base64_encode($encrypt_str);
|
|
}
|
|
|
|
/**
|
|
* 解密方法
|
|
* @param string $str
|
|
* @return string
|
|
*/
|
|
function decrypt($str, $screct_key)
|
|
{
|
|
//AES, 128 模式加密数据 CBC
|
|
$str = base64_decode($str);
|
|
$screct_key = base64_decode($screct_key);
|
|
|
|
//设置全0的IV
|
|
$iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC);
|
|
$iv = str_repeat("\0", $iv_size);
|
|
|
|
$decrypt_str = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $screct_key, $str, MCRYPT_MODE_CBC, $iv);
|
|
$decrypt_str = stripPKSC7Padding($decrypt_str);
|
|
return $decrypt_str;
|
|
}
|
|
|
|
/**
|
|
* 填充算法
|
|
* @param string $source
|
|
* @return string
|
|
*/
|
|
function addPKCS7Padding($source)
|
|
{
|
|
$source = trim($source);
|
|
$block = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC);
|
|
|
|
$pad = $block - (strlen($source) % $block);
|
|
if ($pad <= $block) {
|
|
$char = chr($pad);
|
|
$source .= str_repeat($char, $pad);
|
|
}
|
|
return $source;
|
|
}
|
|
|
|
/**
|
|
* 移去填充算法
|
|
* @param string $source
|
|
* @return string
|
|
*/
|
|
function stripPKSC7Padding($source)
|
|
{
|
|
$char = substr($source, -1);
|
|
$num = ord($char);
|
|
if ($num == 62) return $source;
|
|
$source = substr($source, 0, -$num);
|
|
return $source;
|
|
} |