gnupg_decrypt

(PECL gnupg >= 0.1)

gnupg_decryptDesencripta un texto dado

Descripción

gnupg_decrypt(resource $identifier, string $text): string

Desencripta un texto dado con las claves, establecidas anteriormente con gnupg_adddecryptkey.

Parámetros

identifier

El identificador gnupg, desde una llamada a gnupg_init() o gnupg.

text

El texto a ser desencriptado.

Valores devueltos

En caso de éxito, esta función retorna el texto desencriptado. En caso de fallo, la función retorna false.

Ejemplos

Ejemplo #1 Ejemplo de gnupg_decrypt() mediante funciones

<?php
$res 
gnupg_init();
gnupg_adddecryptkey($res,"8660281B6051D071D94B5B230549F9DC851566DC","test");
$plain gnupg_decrypt($res,$encrypted_text);
echo 
$plain;
?>

Ejemplo #2 Ejemplo de gnupg_encrypt() mediante OO

<?php
$gpg 
= new gnupg();
$gpg -> adddecryptkey("8660281B6051D071D94B5B230549F9DC851566DC","test");
$plain $gpg -> decrypt($encrypted_text);
echo 
$plain;
?>

add a note add a note

User Contributed Notes 5 notes

up
3
aidukas at gmail dot com
8 years ago
If empty text is encrypted, the gnupg_decrypt() function will return a boolean FALSE so if you do a strict comparison (===, !==) to track a failure it will trigger you a failure.
For failures use Exceptions:
<?php
        $gpg
= new gnupg();
       
$gpg->seterrormode(gnupg::ERROR_EXCEPTION);
       
/*
         .......further code.......
       */
       
try {
           
$string = $gpg->decrypt($stringToDecrypt);
        } catch (
Exception $e) {
        
// do the Error processing
       
}

?>
up
9
Mike
12 years ago
As of gnupg version 2, it is not possible to pass a plain password any more. The parameter is simply ignored. Instead, a pinentry application will be launched in case of php running in cli mode. In cgi or apache mode, opening the key will fail.
The simplest solution is to use keys without passwords.
up
5
yougot at haxed dot com
5 years ago
In regards to Mike's comments around passphrases not working correctly in v2, that's not entirely correct. If you want a PHP file to run without having to manually enter in your PGP passphrase you have to follow the steps outlined @ https://wiki.archlinux.org/index.php/GnuPG#Unattended_passphrase

Hope it helps.
up
0
bobby545 at op dot pl
3 years ago
there is mistake in  description of object way, it said it is gnu_encrypt example not decrypt
up
0
Terra
3 years ago
An update in regards to comments from 'yougot' and 'Mike'.

I have just submitted a pull request that should fix the 'passphrase' issue where the internal callback wasn't being called thereby triggering pinentry.

The pull request is at:  https://github.com/php-gnupg/php-gnupg/pull/15

This fix will also work for the current 1.4.0 release:  https://github.com/TerraTech/php-gnupg/tree/fix_adddecryptkey_passphrase-1.4.0

Hope that helps.
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