dirmngr: Support rsaPSS also in the general validate module.
* dirmngr/validate.c (hash_algo_from_buffer): New. (uint_from_buffer): New. (check_cert_sig): Support rsaPSS. * sm/certcheck.c (gpgsm_check_cert_sig): Fix small memory leak on error.
Yes, I know that there is a lot of code duplication. In fact some of
the code is ugly and it would be better if we enhance Libgcrypt to
guarantee that returned memory buffers via gcry_sexp_extract_param are
allways Nul terminated and we should also enhance that function to
directly extract into an unsigned int or char *.
- GnuPG-bug-id: T4538
- Signed-off-by: Werner Koch <email@example.com>