openssl_spki_verify

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

openssl_spki_verifyVerifies a signed public key and challenge

Description

openssl_spki_verify(string $spki): bool

Validates the supplied signed public key and challenge

Parameters

spki

Expects a valid signed public key and challenge

Return Values

Returns true on success or false on failure.

Errors/Exceptions

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

Examples

Example #1 openssl_spki_verify() example

Validates an existing signed public key and challenge

<?php$pkey = openssl_pkey_new('secret password');$spkac = openssl_spki_new($pkey, 'challenge string');if (openssl_spki_verify(preg_replace('/SPKAC=/', '', $spkac))) {    echo $spkac;} else {    echo "SPKAC validation failed";}?>

Example #2 openssl_spki_verify() example from <keygen>

Validates an existing signed public key and challenge issued from the <keygen> element

<?phpif (openssl_spki_verify(preg_replace('/SPKAC=/', '', $_POST['spkac']))) {    echo $spkac;} else {    echo "SPKAC validation failed";}?><keygen name="spkac" challenge="challenge string" keytype="RSA">

See Also