We did exactly this for a side project last week: https://github.com/shabda/tweet-signer https://github.com/shabda/tweet-signer At it's core it's just a spec,

We did exactly this for a side project last week: https://github.com/shabda/tweet-signer https://github.com/shabda/tweet-signer At it's core it's just a spec, so feel free to write your own tools! Suggestions for improving the spec welcome. Please use Github issues