seed

Documentation

Index

• Constants
• Variables
• func ExecutionChunk(chunkIndex uint16) []byte
• func FromParentQCSignature(sigData []byte) ([]byte, error)
• func PRGFromRandomSource(randomSource []byte, customizer []byte) (random.Rand, error)
• func ProtocolCollectorClusterLeaderSelection(clusterIndex uint) []byte

Constants

const RandomSourceLength = crypto.SignatureLenBLSBLS12381

Variables

var (
	// ProtocolConsensusLeaderSelection is the customizer for consensus leader selection
	ProtocolConsensusLeaderSelection = customizerFromIndices([]uint16{0, 1, 1})
	// ProtocolVerificationChunkAssignment is the customizer for verification nodes determines chunk assignment
	ProtocolVerificationChunkAssignment = customizerFromIndices([]uint16{0, 2, 0})
)

Functions

func ExecutionChunk

func ExecutionChunk(chunkIndex uint16) []byte

ExecutionChunk returns the indices for i-th chunk

func FromParentQCSignature

func FromParentQCSignature(sigData []byte) ([]byte, error)

FromParentQCSignature extracts the source of randomness from the given QC sigData. The sigData is an RLP encoded structure that is part of QuorumCertificate.

func PRGFromRandomSource

func PRGFromRandomSource(randomSource []byte, customizer []byte) (random.Rand, error)

PRGFromRandomSource returns a PRG seeded by the source of randomness of the protocol. The customizer is used to generate a task-specific PRG (customizer in this implementation is up to 12-bytes long).

The function hashes the input random source to obtain the PRG seed. Hashing is required to uniformize the entropy over the output.

func ProtocolCollectorClusterLeaderSelection

func ProtocolCollectorClusterLeaderSelection(clusterIndex uint) []byte

ProtocolCollectorClusterLeaderSelection returns the indices for the leader selection for the i-th collector cluster