openssl_spki_export_challenge

openssl_spki_export_challenge

Exports the challenge associated with a signed public key and challenge

 **openssl_spki_export_challenge** string $spki

Exports challenge from encoded signed public key and challenge

spkiExpects a valid signed public key and challenge

Returns the associated challenge string or false on failure.

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

Voorbeeld: 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));
?>

Voorbeeld: example from

Extracts the associated challenge string issued from the element

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

openssl_spki_new``openssl_spki_verify``openssl_spki_export``openssl_get_md_methods``openssl_csr_new``openssl_csr_sign