CalcDifficulty returns the difficulty for signer, given all signers and their most recently signed block numbers, with 0 meaning 'has not signed'.

ExtraAppendVote appends a vote to extra data as 20 bytes of address and a single byte for voter or signer election.

ExtraCandidate returns the candidate address of the proposal vote, or the zero value if one is not present.

ExtraEnsureVanity returns a slice of length 32, trimming extra or filling with 0s as necessary.

ExtraHasVote returns true if extra contains a proposal vote.

IsVoterElection returns true if extra votes on a voter election, or false if it votes on a signer election or does not contain a vote.

ExtraVanity returns a slice of the vanity portion of extra (up to 32).

New creates a Clique proof-of-authority consensus engine with the initial signers set to the ones provided by the user.

NewFaker returns a new fake consensus.Engine which sleeps for delay during header verification.

NewFakeFailer returns a new fake consensus.Engine which fails header verification at the given block.

NewFaker returns a new fake consensus.Engine.

NewFullFaker returns a new fake consensus.Engine which skips header verification entirely.

Block reward in wei for successfully sealing a block.

ErrIneligibleSigner is returned if a signer is authorized to sign, but not eligible to sign this block.

ErrInvalidTimestamp is returned if the timestamp of a block is lower than the previous block's timestamp + the minimum block period.

API is a user facing RPC API to allow controlling the signer and voting mechanisms of the proof-of-authority scheme.

Clique is the proof-of-authority consensus engine proposed to support the Ethereum testnet following the Ropsten attacks.

Snapshot is the state of the authorization voting at a given point in time.

Tally is a simple vote tally to keep the current score of votes.

Vote represents a single vote that an authorized signer made to modify the list of authorizations.