https://bugzilla.redhat.com/show_bug.cgi?id=1545816
--- Comment #10 from Paul Howarth paul@city-fan.org --- (In reply to Petr Pisar from comment #7)
F26 and EPEL7 have even older libtomcrypt. I will try fix it by disabling even more algorithms.
Perhaps it would be better to ask the libtomcrypt maintainer to update these branches?
I've already needed to cut bits out of Net-SSH-Perl to account for missing ECC support in CryptX, and losing any more might make the whole thing unworkable.