Trait frame_support::traits::KeyOwnerProofSystem

source · [−]
pub trait KeyOwnerProofSystem<Key> {
    type Proof: Codec;
    type IdentificationTuple: Codec;
    fn prove(key: Key) -> Option<Self::Proof>;

    fn check_proof(
        key: Key, 
        proof: Self::Proof
    ) -> Option<Self::IdentificationTuple>;
}
Expand description

Something which can compute and check proofs of a historical key owner and return full identification data of that key owner.

Associated Types

The proof of membership itself.

The full identification of a key owner and the stash account.

Required methods

Prove membership of a key owner in the current block-state.

This should typically only be called off-chain, since it may be computationally heavy.

Returns Some iff the key owner referred to by the given key is a member of the current set.

Check a proof of membership on-chain. Return Some iff the proof is valid and recent enough to check.

Implementations on Foreign Types

Implementors