(PHP 5 >= 5.6.0, PHP 7, PHP 8)
openssl_spki_verify — Verifies a signed public key and challenge
$spki
): boolValidates the supplied signed public key and challenge
spki
Expects a valid signed public key and challenge
Returns true
on success or false
on failure.
Emits an E_WARNING
level error if an invalid argument
is passed via the spki
parameter.
Example #1 openssl_spki_verify() example
Validates an existing signed public key and challenge
<?php$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">