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php加密解密的一对函数

关键词: php

php加密解密的一对函数

```
<?php
function encryptEncode($key, $iv, $string)
{
    return mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key, $string, MCRYPT_MODE_CBC, $iv);
}

function encryptDecode($key, $iv, $string)
{
    return mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key, $string, MCRYPT_MODE_CBC, $iv);
}
?>
```

不过`Mcrypt`扩展从PHP7.1.0开始废弃，自PHP7.2.0起会移到PECL

应该及早用下面的代码

```
<?php
$data = 'I love 中国';
$method = 'aes-128-cbc';
$key = '59d875e06fc84';
$options = 1;
$iv = '59d875d1b1690';
$encodeString = openssl_encrypt($data, $method, $key, $options, $iv);
$decodeString = openssl_decrypt($encodeString, $method, $key, $options, $iv);
echo $decodeString;
/*for openssl*/
function str2hex($string){
    $result = '';
    foreach(str_split($string) as $c){
        $result .= sprintf('%02X', ord($c));
    }
    return $result;
}
$theKey = str2hex($key);
$theIv = str2hex($iv);
file_put_contents('./file.encrypted', $encodeString);
$code = "openssl enc -{$method} -d -in file.encrypted -nosalt -nopad -K {$theKey} -iv {$theIv}";
echo $code;
?>
```

admin
2017-10-06 23:05:13
php

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php加密解密的一对函数