Retrieve BLS Public Key

[dutterbutter]

Task summary

Need the ability to retrieve the public key from a BLS signature, this functionality is needed to verify the signature of messages.

Required for the check block messages part of block validation, specifically for bls messages as the public keys are a required param for the verify_bls_aggregate function.

Other information and links

• Lotus GetBlsPublicKey
• Lotus GetBlsPublicKey usage

In our codebase, this would be used during block validation process in the Chainsyncer component here.

[austinabell]

You mean public key from Address right? I think it may be unlikely to be needed since it's very simple to check if an address is BLS and get the payload (public key)

Edit: nvm it probably will be needed to pull a key address from an actor address