Botan: Crypto and TLS for C++11¶
Botan is a crypto library for C++ released under the permissive BSD-2 license.
It provides useful things like TLS, X.509 PKIX (certs, CRLs, OCSP, etc), ECDSA, AES, GCM, and bcrypt, plus a kitchen sink of other crypto algorithms of various utility. A third party open source implementation of SSHv2 that uses botan is also available. In addition to C++ you can use (parts of) botan from Python or Perl (both included in tree), or with Node.js.
If you need help or have questions, send a mail to the development mailing list.
You can browse the source online via the GitHub mirror.