(4) Settler: Signatures #50
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Adds instructions that validate Ed25519 signatures on-chain.
Used to add Validator signatures on
Intents, and Axia signature onProposals.Rust program modified, as well as Typescript SDK and Typescript tests.
Instructions
Mainly two instructions were added that work in a very similar fashion.
We use instruction introspection to verify that a proof was submitted with the signature verification.
This uses the Solana Ed25519Program to validate a signature.
Both
add_axia_sigandadd_validator_sigrequire an Ed25519Program preinstruction to be present, and to contain the valid data (i.e., a message related to the element being validated, and signed by an authorized pubkey).More info on this implementation can be found in this repo which was what I based myself off for this PR.
add_axia_sigValidates a
Proposal. Only whitelisted Axia, only if final and not expired (among other checks).add_validator_sigValidates an
Intent. Only whitelisted Validators, only if final and not expired (among other checks).change_whitelist_programUnimplemented, a
TODOfrom the PR split (#41).Will allow to change the Whitelist program that this Settler uses.
NOTE: Some files might have content from future PRs given this series of PRs come from a larger PR that was split (#41). I have tried to keep this to a minimum but bear this in mind.