Changelog for botan2-2.12.1-4.el8.x86_64.rpm :

* Sun Nov 07 2021 Ben Kircher - 2.12.1-4- Backport patch for #2002829 (Avoid using short exponents with ElGamal) from 2.18.2.
* Sun Nov 07 2021 Ben Kircher - 2.12.1-3- Backport patch for #1934458 (Constant-time computations for base32, base58, base64, hex) from 2.17.3.
* Sat Jul 04 2020 Thomas Moschny - 2.12.1-2- Backport patch for #1849743 (CBC padding side channel) from 2.14.0.
* Sun Oct 20 2019 Thomas Moschny - 2.12.1-1- Import package.