gnupg_verify

(PECL gnupg >= 0.1)

gnupg_verify — Verifies a signed text

Description

gnupg_verify(
    resource $identifier,
    string $signed_text,
    string $signature,
    string &$plaintext = ?
): array|false

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);
?>

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User Contributed Notes 2 notes

down

kae at verens dot com ¶

16 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));
}

down

izumeroot at gmail dot com ¶

2 years ago

Where can I see description of result array?

I've got 

Array
(
    [0] => Array
        (
            [fingerprint] => 9BF78012F700B345827346E1EFA3026F01404358
            [validity] => 4
            [timestamp] => 1643100153
            [status] => 0
            [summary] => 3
        )

)

But what does "status" mean? What is "validity"? What is "summary"?

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