Fairmont-Crypto is a JavaScript library providing crypto-related functions in JavaScript that can be used easily in a functional style. It's part of the Fairmont library. You can use it by itself, or simply as part of the Fairmont library.
npm install fairmont-crypto
Check out the wiki for an getting started guides, tutorials, and reference documentation.
[Fairmont][0] is still under heavy development and is beta quality, meaning you should probably not use it in your production code.
You can get an idea of what we're planning by looking at the [issues list][200]. If you want something that isn't there, and you think it would be a good addition, please open a ticket.