openssl_spki_export

(PHP 5 >= 5.6.0, PHP 7)

openssl_spki_export — Exports a valid PEM formatted public key signed public key and challenge

説明

openssl_spki_export ( string &$spkac ) : string

Exports PEM formatted public key 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 PEM formatted public key 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() example

Extracts the associated PEM formatted public key or NULL on failure.

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

if ($pubKey) {
    echo $pubKey;
}
?>

例2 openssl_spki_export() example from <keygen>

Extracts the associated PEM formatted public key issued from the <keygen> element

<?php
$spkac = openssl_spki_export(preg_replace('/SPKAC=/', '', $_POST['spkac']));
if ($spkac != NULL) {
    echo $spkac;
} else {
    echo "Extraction of pub key failed";
}
?>
<keygen name="spkac" challenge="challenge string" keytype="RSA">

参考