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JSON Object Signing and Encryption (JOSE) for Ruby.

Heavily based on erlang-jose.


Add this line to your application's Gemfile:

gem 'jose'

And then execute:

$ bundle

Or install it yourself as:

$ gem install jose


Better documentation is in progress, but here are a few resources to get started. First, a simple example of key generation and message signing:

# Let's use our secret key "symmetric key" for use with
# the HMAC using SHA-256 (HS256) algorithm.
jwk = JOSE::JWK.from_oct('symmetric key')

# Here is the JSON format of our JWK.
# => "{\"k\":\"c3ltbWV0cmljIGtleQ\",\"kty\":\"oct\"}"

# Now let's sign our message using HS256.
signed = jwk.sign('test', { 'alg' => 'HS256' }).compact
# => "eyJhbGciOiJIUzI1NiJ9.dGVzdA.VlZz7pJCnos0k-WUL9O9RoT9N--2kHSakNIdOg-MIro"

# We use the same key for verification.
verified, message, = jwk.verify(signed)
# => [true, "test"]

More details and examples:

Finally, the erlang-jose documentation can provide more ideas of the functionality available in this gem.


After checking out the repo, run bin/setup to install dependencies. Then, run rake test to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to


Bug reports and pull requests are welcome on GitHub at This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.


The gem is available as open source under the terms of the MPL-2.0 License.