ecdsa

Overview ¶

Package ecdsa provides Sign and Verify capabilities using ECDSA

I picked ethereum-go's implementation of ECDSA instead of the built in go libraries since it provides both build in marshaling/unmarshaling for the signature and a way to recover the Public Key from the signature. The reality is, we don't want to check if a given signature matches a given Public Key. Instead we want to know who signed this message, which is the Public Key. Then its easy to write logic to ensure nobody votes twice given a list of Public Keys or a list of hashed Public Keys, etc...