openssl_spki_export_challenge

(PHP 5 >= 5.6.0, PHP 7)

openssl_spki_export_challenge — Exports the challenge assoicated with a signed public key and challenge

説明

openssl_spki_export_challenge ( string &$spkac ) : string

Exports challenge from encoded signed public key and challenge

パラメータ

spkac

Expects a valid signed public key and challenge

返り値

Returns the associated challenge string or NULL on failure.

エラー / 例外

Emits an E_WARNING level error if an invalid argument is passed via the spkac parameter.

例

例1 openssl_spki_export_challenge() example

Extracts the associated challenge string or NULL on failure.

<?php
$pkey = openssl_pkey_new('secret password');
$spkac = openssl_spki_new($pkey, 'challenge string');
$challenge = openssl_spki_export_challenge(preg_replace('/SPKAC=/', '', $spkac));
?>

例2 openssl_spki_export_challenge() example from <keygen>

Extracts the associated challenge string issued from the <keygen> element

<?php
$challenge = openssl_spki_export_challenge(preg_replace('/SPKAC=/', '', $_POST['spkac']));
?>
<keygen name="spkac" challenge="challenge string" keytype="RSA">

参考