OCSP_check_validity() checks the validity of B<thisupd> and B<nextupd> values
which will be typically obtained from OCSP_resp_find_status() or
-OCSP_single_get0_status(). If B<sec> is non-zero it indicates how many seconds
+OCSP_single_get0_status(). If B<sec> is nonzero it indicates how many seconds
leeway should be allowed in the check. If B<maxsec> is positive it indicates
the maximum age of B<thisupd> in seconds.
An OCSP response for a certificate contains B<thisUpdate> and B<nextUpdate>
fields. Normally the current time should be between these two values. To
-account for clock skew the B<maxsec> field can be set to non-zero in
+account for clock skew the B<maxsec> field can be set to nonzero in
OCSP_check_validity(). Some responders do not set the B<nextUpdate> field, this
would otherwise mean an ancient response would be considered valid: the
B<maxsec> parameter to OCSP_check_validity() can be used to limit the permitted