(PHP 5 >= 5.6.0, PHP 7)
openssl_spki_verify — Verifies a signed public key and challenge
openssl_spki_verify ( string &$spkac ) : string
Validates the supplied signed public key and challenge
spkac
Expects a valid signed public key and challenge
Returns a boolean on success or failure.
Emits an E_WARNING
level error if an invalid argument is passed via the spkac
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
<?php if (openssl_spki_verify(preg_replace('/SPKAC=/', '', $_POST['spkac']))) { echo $spkac; } else { echo "SPKAC validation failed"; } ?> <keygen name="spkac" challenge="challenge string" keytype="RSA">
© 1997–2020 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/function.openssl-spki-verify.php