Never mind the question about FIPS_selftest_drbg_all(). I saw what is being done in the openssl app. However, I am looking for something similar to FIPS_set_error_callbacks() as a general solution. ERR_errors_print_cb() looks like it immediately invoked the callback on previous errors? > On Sep 28, 2021, at 10:17 AM, Kory Hamzeh <kory@xxxxxxxxxxxx> wrote: > > Hello, > > For our FIPS 140-2 POST KAT sequence, I use FIPS_selftest_drbg() and FIPS_selftest_drbg_all() from openssl-fips-2.0.5. I was wondering what would be the best way to perform the same functionality with OpenSSL 3.0.0. > > Thanks, > Kory >