Monocypher is an easy to use crypto library. It is: - Small. Sloccount counts about 1700 lines of code, small enough to allow audits. The binaries are under 65KB. - Easy to deploy. Just add monocypher.c and monocypher.h to your project. They compile as C99 or C++, have no dependency, and are dedicated to the public domain. - Easy to use. The API is small, consistent, and cannot fail on correct input. - Fast. The primitives are fast to begin with, and performance wasn't needlessly sacrificed. Monocypher holds up pretty well against Libsodium, despite being closer in size to TweetNaCl.