如何使用专用密钥 - PHP创建双向编码/解码方法? [英] How to create two way encode/decode methods using use-specific key - PHP?
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问题描述
这是我想要的工作原理:
$ b $ ($ str,$ key){
// something fancy
}
函数decode($ str,$ key) $ key){
// something fancy
}
$ key = $ logged_in_user-> get_key();
$ plain ='abc abc 123 123';
$ encoded_data = encode($ plain,$ key);
// some_fancy_encrypted_data_that_is_really_cooooool
$ decoded_data = decode($ encoded_data,$ key);
// abc abc 123 123
另一件事是,每次使用这个功能每次使用具有相同用户密钥的 encode
函数时,需要返回相同的事情。
这样做?
解决方案
$ myVarIWantToEncodeAndDecode
定义键(salt,broth etc ..): $ key =#& $ sdfdfs789fs7d;
要编码:
$ encoded = base64_encode (mcrypt_encrypt(MCRYPT_RIJNDAEL_256,md5($ key)),$ myVarIWantToEncodeAndDecode,MCRYPT_MODE_CBC,md5(md5($ key))));
要解码:
$ decoding = rtrim(mcrypt_decrypt(MCRYPT_RIJNDAEL_256,md5($ key)),base64_decode($ encoded),MCRYPT_MODE_CBC,md5(md5($ key))),\0);
I need two functions/methods, one to encode, one to decode. This is not for storing passwords. Each user will have a specific key/salt to encode the data.
This is how I would like it to work:
function encode($str, $key) {
// something fancy
}
function decode($str, $key) {
// something fancy
}
$key = $logged_in_user->get_key();
$plain = 'abc abc 123 123';
$encoded_data = encode($plain, $key);
// some_fancy_encrypted_data_that_is_really_cooooool
$decoded_data = decode($encoded_data, $key);
// abc abc 123 123
Another thing is that every time I use this function it needs to return the same thing every time I use the encode
function with the same user key.
How would I do this??
解决方案
$myVarIWantToEncodeAndDecode
Define key (salt, broth etc..): $key = "#&$sdfdfs789fs7d";
To encode:
$encoded = base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, md5($key), $myVarIWantToEncodeAndDecode, MCRYPT_MODE_CBC, md5(md5($key))));
To decode:
$decoded = rtrim(mcrypt_decrypt(MCRYPT_RIJNDAEL_256, md5($key), base64_decode($encoded), MCRYPT_MODE_CBC, md5(md5($key))), "\0");
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