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PHP Manual :: openssl_spki_export_challenge



openssl_sign || openssl_spki_export || OpenSSL Functions || PHP Manual

(PHP 5 >= 5.6.0, PHP 7)

openssl_spki_export_challengeExports the challenge assoicated with a signed public key and challenge

Description

string openssl_spki_export_challenge ( string &$spkac )

Exports challenge from encoded signed public key and challenge

Parameters

spkac

Expects a valid signed public key and challenge

Return Values

Returns the associated challenge string or NULL on failure.

Errors/Exceptions

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

Examples

Example #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));
?>

Example #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">

See Also



openssl_sign || openssl_spki_export || OpenSSL Functions || PHP Manual
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