This is quite a well-known package and we already have dev-libs/libtommath in tree already. Currently, net-misc/dropbear bundles libtomcrypto.
Note that libtommath can use tomsfastmath (bug 723856) optionally.
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=d7dd158a3b2e1668ee547fcb0695d0039ac194bc commit d7dd158a3b2e1668ee547fcb0695d0039ac194bc Author: Sam James <sam@gentoo.org> AuthorDate: 2020-12-20 05:44:47 +0000 Commit: Michał Górny <mgorny@gentoo.org> CommitDate: 2020-12-20 11:35:46 +0000 dev-libs/libtomcrypt: new package "LibTomCrypt is a fairly comprehensive, modular and portable cryptographic toolkit" A number of packages bundle libtomcrypt at the moment. Finally add the package, so we can start unbundling. Original ebuild by Sam James with a few style updates by me. Closes: https://bugs.gentoo.org/723844 Signed-off-by: Sam James <sam@gentoo.org> Closes: https://github.com/gentoo/gentoo/pull/18734 Signed-off-by: Michał Górny <mgorny@gentoo.org> dev-libs/libtomcrypt/Manifest | 1 + dev-libs/libtomcrypt/libtomcrypt-1.18.2.ebuild | 102 +++++++++++++++++++++++++ dev-libs/libtomcrypt/metadata.xml | 19 +++++ 3 files changed, 122 insertions(+)