RbNaCl + libsodium packaged as a gem
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RbNaCl is a Ruby wrapper for libsodium, a portable version of the Networking and Cryptography library (NaCl) created by Daniel J. Bernstein.

tl;dr: it's one of the best crypto libraries around.

rbnacl-libsodium packages the libsodium library as a Ruby Gem so you don't have to worry about installing it through system packages. It builds just like a native extension, but since RbNaCl is implemented with FFI, works on JRuby too!

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Add this line to your application's Gemfile:

gem 'rbnacl-libsodium'

And then execute:

$ bundle

Or install it yourself as:

$ gem install rbnacl-libsodium


require 'rbnacl/libsodium'

will tweak search path allowing rbnacl to find bundled libsodium


Copyright (c) 2012-2018 Tony Arcieri, Distributed under the MIT License. See LICENSE for further details.