gnupg_verify

(PECL gnupg >= 0.1)

gnupg_verify — Verifies a signed text

Description

array gnupg_verify ( resource $identifier , string $signed_text , string $signature [, string &$plaintext ] )

Verifies the given signed_text and returns information about the signature.

Parameters

identifier: The gnupg identifier, from a call to gnupg_init() or gnupg.
signed_text: The signed text.
signature: The signature. To verify a clearsigned text, set signature to FALSE.
plaintext: The plain text. If this optional parameter is passed, it is filled with the plain text.

Return Values

On success, this function returns information about the signature. On failure, this function returns FALSE.

Examples

Example #1 Procedural gnupg_verify() example


<?php
$plaintext = "";
$res = gnupg_init();
// clearsigned
$info = gnupg_verify($res,$signed_text,false,$plaintext);
print_r($info);
// detached signature
$info = gnupg_verify($res,$signed_text,$signature);
print_r($info);
?>

Example #2 OO gnupg_verify() example


<?php
$plaintext = "";
$gpg = new gnupg();
// clearsigned
$info = $gpg -> verify($signed_text,false,$plaintext);
print_r($info);
// detached signature
$info = $gpg -> verify($signed_text,$signature);
print_r($info);
?>

User Contributed Notes

kae at verens dot com

7 years ago


You can see who made the signature by checking its fingerprint:

<?php
$res = gnupg_init();
$info = gnupg_verify($res,$signed_text,$signature);
if($info !== false){
  $fingerprint = $info['fingerprint'];
  var_dump(gnupg_keyinfo($res, $fingerprint));
}