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1// En archivo de configuración kumbiaPHP  default/app/config 
2//
3// crear la variable secret_iv bajo authentication, por ejemplo:
4//
5// [authentication]
6// secret_key = "z?&vbX$4\N`}@vo=~)\?eBFyc&;J.Nx-58/dU8\)"
7// copy/paste este código para un controlador de acceso global
8//
9    const ENCRYPT_METHOD = 'AES-256-CBC';
10    const SECRET_IV      = 'MAPt=&L3>*m@=K;UyU`2fGcT\e[#{LiUha@_/yF%';
11    const SHA256         = 'sha256';
12public static function stringEncode($string)
13    {
14
15        $encrypt_method = self::ENCRYPT_METHOD;
16        $secret_iv      = self::SECRET_IV;
17        $secret_key     = config::get("config.authentication.secret_key");
18
19
20        // hash
21        $key    = hash(self::SHA256, $secret_key);
22
23        // iv - encrypt method AES-256-CBC expects 16 bytes - else you will get a warning
24        $iv     = substr(hash(self::SHA256, $secret_iv), 0, 16);
25        $output = openssl_encrypt($string, $encrypt_method, $key, 0, $iv);
26
27        return  base64_encode($output);
28    }
29
30    public static function stringDecode($string)
31    {
32
33        $encrypt_method = self::ENCRYPT_METHOD;
34        $secret_iv      = self::SECRET_IV;
35        $secret_key     = config::get("config.authentication.secret_key");
36
37
38        // hash
39        $key            = hash(self::SHA256, $secret_key);
40
41        // iv - encrypt method AES-256-CBC expects 16 bytes - else you will get a warning
42        $iv             = substr(hash(self::SHA256, $secret_iv), 0, 16);
43
44        return openssl_decrypt(base64_decode($string), $encrypt_method, $key, 0, $iv);
45
46    }