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PHP Manual :: openssl_spki_export



openssl_spki_export_challenge || openssl_spki_new || OpenSSL Functions || PHP Manual

(PHP 5 >= 5.6.0, PHP 7)

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

Description

string openssl_spki_export ( string &$spkac )

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

Parameters

spkac

Expects a valid signed public key and challenge

Return Values

Returns the associated PEM formatted public key 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() 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;
}
?>

Example #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">

See Also



openssl_spki_export_challenge || openssl_spki_new || OpenSSL Functions || PHP Manual
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