Crate sp_consensus_babe

An opaque type used to represent the key ownership proof at the runtime API boundary. The inner value is an encoded representation of the actual key ownership proof which will be parameterized when defining the runtime. At the runtime API boundary this type is unknown and as such we keep this opaque representation, implementors of the runtime API will have to make sure that all usages of OpaqueKeyOwnershipProof refer to the same type.

Slot

Unit type wrapper that represents a slot.

Transcript

A transcript of a public-coin argument.

Enums

AllowedSlots

Types of allowed slots.

ConsensusLog

An consensus log item for BABE.

Constants

BABE_ENGINE_ID

The ConsensusEngineId of BABE.

BABE_VRF_PREFIX

The prefix used by BABE for its VRF keys.

KEY_TYPE

Key type for BABE module.

MEDIAN_ALGORITHM_CARDINALITY

How many blocks to wait before running the median algorithm for relative time This will not vary from chain to chain as it is not dependent on slot duration or epoch length.

PUBLIC_KEY_LENGTH

The length of the public key

RANDOMNESS_LENGTH

The length of the Randomness.

VRF_OUTPUT_LENGTH

Length of VRF output.

VRF_PROOF_LENGTH

Length of the short VRF proof which lacks support for batch verification.

Statics

BABE_VRF_INOUT_CONTEXT

BABE VRFInOut context.

Traits

BabeApi

API necessary for block authorship with BABE.

Functions

check_equivocation_proof

Verifies the equivocation proof by making sure that: both headers have different hashes, are targetting the same slot, and have valid signatures by the same authority.

make_transcript

Make a VRF transcript from given randomness, slot number and epoch.

make_transcript_data

Make a VRF transcript data container

Type Definitions

AuthorityId

A Babe authority identifier. Necessarily equivalent to the schnorrkel public key used in the main Babe module. If that ever changes, then this must, too.

AuthorityIndex

The index of an authority.

AuthorityPair

A Babe authority keypair. Necessarily equivalent to the schnorrkel public key used in the main Babe module. If that ever changes, then this must, too.

AuthoritySignature

A Babe authority signature.

BabeAuthorityWeight

The weight of an authority.

BabeBlockWeight

The weight of a BABE block.

EquivocationProof

An equivocation proof for multiple block authorships on the same slot (i.e. double vote).

Randomness

Schnorrkel randomness value. Same size as VRFOutput.