openssl_spki_export_challenge
PHP 5 >= 5.6.0, PHP 7, PHP 8
openssl_spki_export_challenge - Exports the challenge associated with a signed public key and challenge
Manual
openssl_spki_export_challenge(
string$spki ): string|false
Exports challenge from encoded signed public key and challenge
Parameters
- spki
-
Expects a valid signed public key and challenge
Return Values
Returns the associated challenge string or false on failure.
Exceptions and Errors
Emits an E_WARNING level error if an invalid argument is passed via the spki parameter.