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openssl_spki_export

(PHP 5 >= 5.6.0, PHP 7, PHP 8)

openssl_spki_exportExports a valid PEM formatted public key signed public key and challenge

Descripción

openssl_spki_export(string $spki): string|false

Exports PEM formatted public key from encoded signed public key and challenge

Parámetros

spki

Expects a valid signed public key and challenge

Valores devueltos

Returns the associated PEM formatted public key or false on failure.

Errores/Excepciones

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

Ejemplos

Ejemplo #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;
}
?>

Ejemplo #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">

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