Botan: Crypto and TLS for Modern C++

If you don't know precisely why you want a library like this (and sometimes you do), you want libsodium instead.

For what it&#x27;s worth, I&#x27;ve used Botan in a personal project where I needed a few hashing algorithms to verify file integrity (SHA-1, SHA-256, even MD5), and also used Botan&#x27;s base 64 decoder in the same project.<p>I found its modern &quot;style&quot; pleasant to write code for, and easy to integrate with good docs. That said, I did notice the large number of algorithms as others have pointed out, and I&#x27;m not sure I&#x27;d use it for more serious purposes when libsodium is well-established. It certainly wouldn&#x27;t be an obvious choice.<p>But to quickly add support for common hash algorithms in a small project, I thought it was a good option and enjoyed its API design and simplicity.

I personally don’t like that every single cryptography scheme is included in a single library. This creates a fake sense of powerfulness, but breaks down once some more complicated things need to be done such as zero knowledge proofs or homomorphic computations when it can become awkward at best. In a sensible language one makes seperate modules for hashing, cryptographic group library, pseudorandom number generation, cryptographic signatures, various zero knowledge proofs and TLS and uses package manager to install what one needs.

A long list of supported hashes&#x2F;algorithms is imo an antipattern for crypto libraries. They should focus on being very obviously correct for a small set of supported algorithms. Crypto&#x27;s hard and this just increases the surface area.

I first learned of it because KeePassXC uses it <a href="https:&#x2F;&#x2F;github.com&#x2F;keepassxreboot&#x2F;keepassxc&#x2F;blob&#x2F;2.7.9&#x2F;cmake&#x2F;FindBotan.cmake">https:&#x2F;&#x2F;github.com&#x2F;keepassxreboot&#x2F;keepassxc&#x2F;blob&#x2F;2.7.9&#x2F;cmake...</a>

It&#x27;s a great, easy to learn library. I used it for Firestr

Are there any demos using this to sign requests on the ESP32 or similar embedded platforms?

Is there a Rust alternative?