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Valentina
Asked: 2022-07-27 16:02:17 +0800 CST 2022-07-27 16:02:17 +0800 CST

How to encrypt and decrypt data using PHP?

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I need to be able to encrypt data, it is just simple information, nothing to worry about in terms of security, I need to pass this encrypted information by method GET, for example:

example.com/?dato=aHDwbejferbdscb23zs

So for this I am using openssl_encryptand openssl_decrypthaving the following:

$url = 'https://stackoverflow.com';
$key_encrypt = '1234567812345678';
$iv = '1234567812345678';
$encrypt = openssl_encrypt($url, "AES-128-CBC", $key_encrypt, FALSE, $iv);
$decrypt = openssl_decrypt($encrypt, "AES-128-CBC", $key_encrypt, FALSE, $iv);

The problem is that this encryption can create special characters for me, for example:

ncG1vNJzZmihkW19coCPcGWuq16Wv6S0yK%2BcZ6einHx2e8itnKarX2d9dquRaWlqaGdng3B%2Bj25lopleor11==

And, by passing this information by method GET, I will not be able to decipher said information by said characters.

So the question is the following, there is a possibility that the cipher is not that long, this is optional. What I do require is that the encryption is only of a-Zand numbers 0-9without adding special characters that harm the verification by methodGET

php

1 Answers

  1. Best Answer

    I recommend you to use the JWT library that converts an array to a string(JSON) which can be passed by URL

    Here you have the documentation and the JWT library

    Here is an example

    use Firebase\JWT\JWT;

//llave de encriptacion
$key = "example_key";

//datos a enviar 
$payload = array(
    "iss" => "http://example.org",
    "aud" => "http://example.com",
    "iat" => 1356999524,
    "nbf" => 1357000000
);

//encriptadmos
$jwt = JWT::encode($payload, $key);


//Esta es la variable que enviaras en el URL
print_r($jwt);

//asi es como se desencripta 

$decoded = JWT::decode($jwt, $key, array('HS256'));

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