[NSec](https://nsec.rocks/) is a cryptographic library for [.NET](https://dotnet.microsoft.com/) based on [libsodium](https://libsodium.org/) ❤. It provides modern cryptographic primitives in a modern API based on [Span<T>](https://docs.microsoft.com/en-us/archive/msdn-magazine/2017/connect/csharp-all-about-span-exploring-a-new-net-mainstay). NSec aims to be easy to use, secure by default, fast, and agile. The project is written primarily in C#, distributed under the MIT License license, first published in 2017. Key topics include: aead, aes-gcm, blake2b, chacha20-poly1305, crypto.