Add const-correctness to HMAC.
Add const-correctness to HMAC.
ace0/relic,ukscone/relic,ukscone/relic,tfar/relic,ace0/relic,sruesch/relic,sruesch/relic,ace0/relic,tfar/relic,ukscone/relic,OlegHahm/relic,OlegHahm/relic,OlegHahm/relic,tfar/relic,sruesch/relic,ace0/relic