wangyongdong
9/16/2019 - 6:37 AM
php几种加密解密方法
<?php
class EncryptFacade extends BaseFacade
{
/**
* @param string $input 加密字符串
* @param string $key key
* @return string
*/
public static function encrypt($input, $key = '')
{
$size = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_ECB);
$pad = $size - (strlen($input) % $size);
$input = $input . str_repeat(chr($pad), $pad);
$td = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_ECB, '');
$iv = mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_RAND);
mcrypt_generic_init($td, $key, $iv);
$data = mcrypt_generic($td, $input);
mcrypt_generic_deinit($td);
mcrypt_module_close($td);
$data = base64_encode(urlencode($data));
return $data;
}
/**
* @param string $sStr 解密字符串
* @param string $key key
* @return bool|string
*/
public static function decrypt($sStr, $key = '')
{
$decrypted = mcrypt_decrypt(
MCRYPT_RIJNDAEL_128,
$key,
urldecode(base64_decode($sStr)),
MCRYPT_MODE_ECB
);
$dec_s = strlen($decrypted);
$padding = ord($decrypted[$dec_s - 1]);
$decrypted = substr($decrypted, 0, -$padding);
return $decrypted;
}
/**
* aes加密
* @param string $input 加密字符串
* @return string
*/
public static function newAesEncrypt($input)
{
$key = self::random(16, '1234567890abcdefghijklmnopqrstuvwxyz');//随机生成16位key
$size = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_ECB);//128位时为16
$pad = $size - (strlen($input) % $size);//取得补码的长度
$input = $input . str_repeat(chr($pad), $pad); //用ASCII码为补码长度的字符， 补足最后一段
$data = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key, $input, MCRYPT_MODE_ECB);
$data = base64_encode($data);
//key拼在字符串前
$data = $key . $data;
return $data;
}
/**
* aes 解密
* @param string $sStr 解密字符串
* @return string
*/
public static function newAseDecrypt($sStr)
{
//取出前16位为key
$sKey = substr($sStr, 0, 16);
$sStr = substr($sStr, 16);
$decrypted = mcrypt_decrypt(
MCRYPT_RIJNDAEL_128,
$sKey,
base64_decode($sStr),
MCRYPT_MODE_ECB
);
$dec_s = strlen($decrypted);
$padding = ord($decrypted[$dec_s - 1]);
$decrypted = substr($decrypted, 0, -$padding);
return $decrypted;
}
// 加密解密
public static function random($length, $chars = '1234567890')
{
$hash = '';
$max = strlen($chars) - 1;
for ($i = 0; $i < $length; $i++) {
$hash .= $chars[mt_rand(0, $max)];
}
return $hash;
}
}
$signature = AESMcrypt::encrypt('text');
$check = AESMcrypt::encrypt($signature);
echo $check;<?php
/**
* 加密函数
*/
header("Content-Type:text/html;charset=utf-8");
// authcode 加密解密
// 非常给力的authcode加密函数,Discuz!经典代码(带详解)
// 函数authcode($string, $operation, $key, $expiry)中的
// $string：字符串，明文或密文；
// $operation：DECODE表示解密，其它表示加密；
// $key：密匙；
// $expiry：密文有效期。
define('UC_KEY', 's20aE2FbZatdF1ZdY3TcWaha4dceu0jfxaB9DaW000B6r9Ndi961F0x3a2N4gdg0');
function authcode($string, $operation = 'DECODE', $key = '', $expiry = 0)
{
$ckey_length = 4; // 随机密钥长度 取值 0-32; // 动态密匙长度，相同的明文会生成不同密文就是依靠动态密匙
// 加入随机密钥，可以令密文无任何规律，即便是原文和密钥完全相同，加密结果也会每次不同，增大破解难度。
// 取值越大，密文变动规律越大，密文变化 = 16 的 $ckey_length 次方
// 当此值为 0 时，则不产生随机密钥
// 密匙
$key = md5($key ? $key : UC_KEY);
// 密匙a会参与加解密
$keya = md5(substr($key, 0, 16));
// 密匙b会用来做数据完整性验证
$keyb = md5(substr($key, 16, 16));
// 密匙c用于变化生成的密文
$keyc = $ckey_length ? ($operation == 'DECODE' ? substr($string, 0, $ckey_length) : substr(md5(microtime()), -$ckey_length)) : '';
// 参与运算的密匙
$cryptkey = $keya.md5($keya.$keyc);
$key_length = strlen($cryptkey);
// 明文，前10位用来保存时间戳，解密时验证数据有效性，10到26位用来保存$keyb(密匙b)，
// 解密时会通过这个密匙验证数据完整性
// 如果是解码的话，会从第$ckey_length位开始，因为密文前$ckey_length位保存 动态密匙，以保证解密正确
$string = $operation == 'DECODE' ? base64_decode(substr($string, $ckey_length)) : sprintf('%010d', $expiry ? $expiry+time() : 0).substr(md5($string.$keyb), 0, 16).$string;
$string_length = strlen($string);
$result = '';
$box = range(0, 255);
// 产生密匙簿
$rndkey = array();
for ($i = 0; $i <= 255; $i++) {
$rndkey[$i] = ord($cryptkey[$i%$key_length]);
}
// 用固定的算法，打乱密匙簿，增加随机性，好像很复杂，实际上对并不会增加密文的强度
for ($j = $i = 0; $i < 256; $i++) {
$j = ($j+$box[$i]+$rndkey[$i])%256;
$tmp = $box[$i];
$box[$i] = $box[$j];
$box[$j] = $tmp;
}
// 核心加解密部分
for ($a = $j = $i = 0; $i < $string_length; $i++) {
$a = ($a+1)%256;
$j = ($j+$box[$a])%256;
$tmp = $box[$a];
$box[$a] = $box[$j];
$box[$j] = $tmp;
// 从密匙簿得出密匙进行异或，再转成字符
$result .= chr(ord($string[$i]) ^ ($box[($box[$a]+$box[$j])%256]));
}
if ($operation == 'DECODE') {
// 验证数据有效性，请看未加密明文的格式
if ((substr($result, 0, 10) == 0 || substr($result, 0, 10)-time() > 0) && substr($result, 10, 16) == substr(md5(substr($result, 26).$keyb), 0, 16)) {
return substr($result, 26);
}
else {
return '';
}
}
else {
// 把动态密匙保存在密文里，这也是为什么同样的明文，生产不同密文后能解密的原因
// 因为加密后的密文可能是一些特殊字符，复制过程可能会丢失，所以用base64编码
return $keyc.str_replace('=', '', base64_encode($result));
}
}
// 加密
$str = 555025 . '-wangyd';
$sid = authcode($str, 'ENCODE');
echo $sid . '<br/>';
// 解密
$str = authcode($sid, 'DECODE'); //解密cookie
echo $str . '<hr/>';<?php
//函数encrypt($string,$operation,$key)中$string：需要加密解密的字符串；$operation：判断是加密还是解密，E表示加密，D表示解密；$key：密匙。
function encrypt($string, $operation, $key = '')
{
$key = md5($key);
$key_length = strlen($key);
$string = $operation == 'D' ? base64_decode($string) : substr(md5($string.$key), 0, 8).$string;
$string_length = strlen($string);
$rndkey = $box = array();
$result = '';
for ($i = 0; $i <= 255; $i++) {
$rndkey[$i] = ord($key[$i%$key_length]);
$box[$i] = $i;
}
for ($j = $i = 0; $i < 256; $i++) {
$j = ($j+$box[$i]+$rndkey[$i])%256;
$tmp = $box[$i];
$box[$i] = $box[$j];
$box[$j] = $tmp;
}
for ($a = $j = $i = 0; $i < $string_length; $i++) {
$a = ($a+1)%256;
$j = ($j+$box[$a])%256;
$tmp = $box[$a];
$box[$a] = $box[$j];
$box[$j] = $tmp;
$result .= chr(ord($string[$i]) ^ ($box[($box[$a]+$box[$j])%256]));
}
if ($operation == 'D') {
if (substr($result, 0, 8) == substr(md5(substr($result, 8).$key), 0, 8)) {
return substr($result, 8);
}
else {
return '';
}
}
else {
return str_replace('=', '', base64_encode($result));
}
}
$str = 'abc';
$key = 'www.helloweba.com';
$token = encrypt($str, 'E', $key);
echo '加密前:' . $str . '<br/>';
echo '加密后:'.encrypt($str, 'E', $key) . '<br/>';
echo '解密:'.encrypt($token, 'D', $key) . '<br/>';
<?php
// 加密函数
function lock_url($txt, $key = 'www.wangyd.com')
{
$chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-=+";
$nh = rand(0, 64);
$ch = $chars[$nh];
$mdKey = md5($key.$ch);
$mdKey = substr($mdKey, $nh%8, $nh%8+7);
$txt = base64_encode($txt);
$tmp = '';
$i = 0;
$j = 0;
$k = 0;
for ($i = 0; $i < strlen($txt); $i++) {
$k = $k == strlen($mdKey) ? 0 : $k;
$j = ($nh+strpos($chars, $txt[$i])+ord($mdKey[$k++]))%64;
$tmp .= $chars[$j];
}
return urlencode($ch.$tmp);
}
// 解密函数
function unlock_url($txt, $key = 'www.wangyd.com')
{
$txt = urldecode($txt);
$chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-=+";
$ch = $txt[0];
$nh = strpos($chars, $ch);
$mdKey = md5($key.$ch);
$mdKey = substr($mdKey, $nh%8, $nh%8+7);
$txt = substr($txt, 1);
$tmp = '';
$i = 0;
$j = 0;
$k = 0;
for ($i = 0; $i < strlen($txt); $i++) {
$k = $k == strlen($mdKey) ? 0 : $k;
$j = strpos($chars, $txt[$i])-$nh-ord($mdKey[$k++]);
while ($j < 0)
$j += 64;
$tmp .= $chars[$j];
}
return base64_decode($tmp);
}
// 加密
$str = lock_url('Hello 北京');
echo $str.'<br/>';
// 解密
$txt = unlock_url($str);
echo $txt.'<br/>';<?php
function passport_encrypt($txt, $key = 'www.zhuoyuexiazai.com')
{
srand((double)microtime()*1000000);
$encrypt_key = md5(rand(0, 32000));
$ctr = 0;
$tmp = '';
for ($i = 0; $i < strlen($txt); $i++) {
$ctr = $ctr == strlen($encrypt_key) ? 0 : $ctr;
$tmp .= $encrypt_key[$ctr].($txt[$i] ^ $encrypt_key[$ctr++]);
}
return urlencode(base64_encode(passport_key($tmp, $key)));
}
function passport_decrypt($txt, $key = 'www.zhuoyuexiazai.com')
{
$txt = passport_key(base64_decode(urldecode($txt)), $key);
$tmp = '';
for ($i = 0; $i < strlen($txt); $i++) {
$md5 = $txt[$i];
$tmp .= $txt[++$i] ^ $md5;
}
return $tmp;
}
function passport_key($txt, $encrypt_key)
{
$encrypt_key = md5($encrypt_key);
$ctr = 0;
$tmp = '';
for ($i = 0; $i < strlen($txt); $i++) {
$ctr = $ctr == strlen($encrypt_key) ? 0 : $ctr;
$tmp .= $txt[$i] ^ $encrypt_key[$ctr++];
}
return $tmp;
}
$txt = "1";
$key = "testkey";
$encrypt = passport_encrypt($txt, $key);
$decrypt = passport_decrypt($encrypt, $key);
echo $encrypt."<br>";
echo $decrypt."<br>";<?php
/**
* @param $aParams 请求参数数组
* @return string 加密签名
*/
function sign($aParams) {
$sign_key = "Asᷛkdj^53?_7rfG@kgfj";
$queryString = "";
unset($aParams['sign']);
// 对加密数组进行字典排序,将Key和Value拼接
if (is_array($aParams) && !empty($aParams) && ksort($aParams)) {
foreach ($aParams as $key => $value) {
if (strlen($value) != 0) {
$queryString .= $key . "=" . $value;
}
}
}
// 通过md5加密并转化为大写
$string = strtoupper(md5($queryString));
// 拼接key 并md5加密
return md5(md5($string) . 'key=' . md5($sign_key));
}
$aParams = $_REQUEST;
echo sign($aParams);