Replace PointGFp::check_invaraints, which would either return silently

or throw an exception, with PointGFp::on_the_curve, which returns a bool.

Update callers.

This showed several cases where check_invaraints was being called
multiple times, for instance when decoding a point with OS2ECP,
check_invaraints was called; many callers of OS2ECP would then call
check_invaraints again on the same object.

0 files changed, 0 insertions, 0 deletions