This is a ruby libraray for Sr25519. Use to sign and verify message.

More info at:


Add this line to your application's Gemfile:

gem 'sr25519'

And then execute:

$ bundle install

Or install it yourself as:

$ gem install sr25519


1. Require ed25519.rb in your Ruby program:

require "sr25519"

2. SR25519 Generate keypair

# seed is priviate key, is a hex string.
# example: SR25519.keypair_from_seed("0xfac7959dbfe72f052e5a0c3c8d6530f202b02fd8f9f5ca3580ec8deb7797479e")
keypair = SR25519.keypair_from_seed(seed)

3. SR25519 Generate public_key

public_key = SR25519.get_public_key_from_seed(seed)

# get the hex string
public_key_str = public_key.to_s

4. Encode address

address = Address.encode(public_key.to_s)

5. Decode address

public_key_str = Address.decode(address)

6. SR25519 Sign message

# message = "Hello World"
signature_result = SR25519.sign(message, keypair)

7. SR25519 Verify message

verify_result = SR25519.verify(address, message, signature_result)

8. ED25519 Generate keypair

keypair = ED25519.keypair_from_seed(seed)

9. ED25519 Sign message

signature_result = ED25519.sign(message, keypair)

10. ED25519 Get public key

pulick_key_str = ED25519.get_public_key_from_seed(seed)

11. ED25519 Verify message

# public_key_str = ED25519.get_public_key_from_seed(seed)
# address = Address.encode(public_key_str)
verify_result = ED25519.verify(address, message, signature_result)

Running tests

  1. Run all tests


  1. Update to latest image

docker pull uniart/sr25519:latest

  1. Run image:

docker run -it uniart/sr25519:latest bash

This will enter the container with a linux shell opened.

   /usr/src/app # 
  1. Type rspec to run all tests
   /usr/src/app # rspec


After checking out the repo, run bin/setup to install dependencies. Then, run rake spec 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 the created tag, 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 code of conduct.


The gem is available as open source under the terms of the MIT License.