记6种php 加密解密方法

封心断情 發表於 2019-7-29 17:23:00

1.第一种
<div class="cnblogs_code">
<pre><?php
function encryptDecrypt($key, $string, $decrypt){
if($decrypt){
 $decrypted = rtrim(mcrypt_decrypt(MCRYPT_RIJNDAEL_256, md5($key), base64_decode($string), MCRYPT_MODE_CBC, md5(md5($key))), "12");
 return $decrypted;
}else{
 $encrypted = base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, md5($key), $string, MCRYPT_MODE_CBC, md5(md5($key))));
 return $encrypted;
}
}

//加密:"z0JAx4qMwcF+db5TNbp/xwdUM84snRsXvvpXuaCa4Bk="
echo encryptDecrypt('password', 'Helloweba欢迎您',0);
//解密:"Helloweba欢迎您"
echo encryptDecrypt('password', 'z0JAx4qMwcF+db5TNbp/xwdUM84snRsXvvpXuaCa4Bk=',1);
?>
</pre>
</div>
 
2.第二种
<div class="cnblogs_code">
<pre><?php
//加密函数
function lock_url($txt,$key='liiu'){
$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='liiu'){
$txt = urldecode($txt);
$chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-=+";
$ch = $txt;
$nh = strpos($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);
}
?>
</pre>
</div>
3.第三种
<div class="cnblogs_code">
<pre><?php

//改进后的算法
//加密函数
function lock_url($txt,$key='str'){
$txt = $txt.$key;
$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(base64_encode($ch.$tmp));
}
//解密函数
function unlock_url($txt,$key='str'){
$txt = base64_decode(urldecode($txt));
$chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-=+";
$ch = $txt;
$nh = strpos($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 trim(base64_decode($tmp),$key);
}

?>
</pre>
</div>
4.第四种
<div class="cnblogs_code">
<pre><?php

function passport_encrypt($txt, $key = 'liiu') {
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 = 'liiu') {
$txt = passport_key(base64_decode(urldecode($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." ";
echo $decrypt." ";

?>
</pre>
</div>
5.第五种
<div class="cnblogs_code">
<pre><?php
//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；$expiry：密文有效期。
function authcode($string, $operation = 'DECODE', $key = '', $expiry = 0) {
// 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 
$ckey_length = 4;

// 密匙 
$key = md5($key ? $key : $GLOBALS['discuz_auth_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);
$rndkey = array();
// 产生密匙簿 
for($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));
}
}

$str = 'abcdef';
$key = 'www.helloweba.com';
echo authcode($str,'ENCODE',$key,0); //加密 
$str = '56f4yER1DI2WTzWMqsfPpS9hwyoJnFP2MpC8SOhRrxO7BOk';
echo authcode($str,'DECODE',$key,0); //解密 

?> </pre>
</div>
6.第六种
<div class="cnblogs_code">
<pre><?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', $key);
echo '加密:'.encrypt($str, 'E', $key);
echo '解密：'.encrypt($str, 'D', $key);

?></pre>
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来源：https://www.cnblogs.com/ningjiabing/p/11265204.html

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记6种php 加密解密方法