por

package
v1.0.2 Latest Latest
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 Go to latest Published: Aug 16, 2022 License: Apache-2.0 Imports: 22 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	// Block proposer of block height X needs to be specified in block X-1, so its
	// candidate sigchains have to be fully propagated before block X-1 is
	// proposed, i.e. before block X-2 is accepted. In other words, sigchain can
	// only propagate when block height <= X-3.
	SigChainPropagationHeightOffset = 3
	// Block proposer of block height X is chosen from sigchain produced during
	// block X-SigChainPropagationHeightOffset-SigChainPropogationTime because
	// sigchain can only propagate when block height <=
	// X-SigChainPropagationHeightOffset, so it has to start propogating when
	// block height <= X-SigChainPropagationHeightOffset-SigChainPropogationTime.
	SigChainMiningHeightOffset = config.SigChainPropogationTime + SigChainPropagationHeightOffset
)
View Source 
const (
	MaxNextHopChoice = 4 // should be >= nnet NumFingerSuccessors to avoid false positive
)

Variables

This section is empty.

Functions

func InitPorServer 

func InitPorServer(account *vault.Account, id []byte, s Store, l LocalNode) error

func SignatureHashWithPenalty 

func SignatureHashWithPenalty(sc *pb.SigChain) ([]byte, error)

func VerifyID 

func VerifyID(sc *pb.SigChain, height uint32) error

func VerifySigChainLight 

func VerifySigChainLight(sc *pb.SigChain, height uint32) error

VerifySigChainLight performs light-weighted sigchain verification without verifying signature (CPU intensive) and ID (IO intensive).

func VerifySigChainMeta 

func VerifySigChainMeta(sc *pb.SigChain, height uint32) error

func VerifySigChainPath 

func VerifySigChainPath(sc *pb.SigChain, height uint32) error

func VerifySigChainSignatures 

func VerifySigChainSignatures(sc *pb.SigChain) error

VerifySigChainSignatures returns whether all signatures in sigchain are valid

Types

type BacktrackSigChainInfo 

type BacktrackSigChainInfo struct {
	DestSigChainElem *pb.SigChainElem
	PrevHash         []byte
}

type LocalNode 

type LocalNode interface {
	VerifySigChainObjection(sc *pb.SigChain, reporterID []byte, height uint32) (int, error)
}

LocalNode interface is used to avoid cyclic dependency

type PinSigChainInfo 

type PinSigChainInfo struct {
	PrevHash []byte
}

type PorPackage 

type PorPackage struct {
	Height        uint32
	VoteForHeight uint32
	BlockHash     []byte
	TxHash        []byte
	SigHash       []byte
	SigChain      *pb.SigChain
}

func NewPorPackage 

func NewPorPackage(txn *transaction.Transaction) (*PorPackage, error)

type PorPackages 

type PorPackages []*PorPackage

func (PorPackages) Len 

func (c PorPackages) Len() int

func (PorPackages) Less 

func (c PorPackages) Less(i, j int) bool

func (PorPackages) Swap 

func (c PorPackages) Swap(i, j int)

type PorServer 

type PorServer struct {
	sync.RWMutex
	// contains filtered or unexported fields
}

func GetPorServer 

func GetPorServer() *PorServer

func NewPorServer 

func NewPorServer(account *vault.Account, id []byte) *PorServer

func (*PorServer) AddDestSigChainElem 

func (ps *PorServer) AddDestSigChainElem(blockHash, lastHash []byte, sigChainLen int, destElem *pb.SigChainElem) (bool, error)

func (*PorServer) AddSigChainFromTx 

func (ps *PorServer) AddSigChainFromTx(txn *transaction.Transaction, currentHeight uint32) (*PorPackage, error)

func (*PorServer) AddSigChainObjection 

func (ps *PorServer) AddSigChainObjection(currentHeight, voteForHeight uint32, sigHash, reporterPubkey []byte) bool

func (*PorServer) BacktrackSigChain 

func (ps *PorServer) BacktrackSigChain(elems []*pb.SigChainElem, hash, senderPubkey []byte) ([]*pb.SigChainElem, []byte, []byte, error)

func (*PorServer) BacktrackSigChainSuccess 

func (ps *PorServer) BacktrackSigChainSuccess(hash []byte)

BacktrackSigChainSuccess marks a sigchain as backtracked to avoid it being backtracked multiple times.

func (*PorServer) CreateSigChainForClient 

func (ps *PorServer) CreateSigChainForClient(nonce, dataSize uint32, blockHash []byte, srcID, srcPubkey, destID, destPubkey, signature []byte, sigAlgo pb.SigAlgo) (*pb.SigChain, error)

func (*PorServer) FlushSigChain 

func (ps *PorServer) FlushSigChain(blockHash []byte)

func (*PorServer) GetMiningSigChainTxnHash 

func (ps *PorServer) GetMiningSigChainTxnHash(voteForHeight uint32) (common.Uint256, error)

func (*PorServer) GetOrComputeVrf 

func (ps *PorServer) GetOrComputeVrf(data []byte) ([]byte, []byte, error)

func (*PorServer) GetSigChainTxn 

func (ps *PorServer) GetSigChainTxn(txnHash common.Uint256) (*transaction.Transaction, error)

func (*PorServer) GetSigChainTxnByShortHash 

func (ps *PorServer) GetSigChainTxnByShortHash(shortHash []byte) (*transaction.Transaction, error)

func (*PorServer) GetSigChainTxnBySigHash 

func (ps *PorServer) GetSigChainTxnBySigHash(sigHash []byte) (*transaction.Transaction, error)

func (*PorServer) PinSigChain 

func (ps *PorServer) PinSigChain(hash, senderPubkey []byte) ([]byte, []byte, error)

PinSigChain extends the cache expiration of a key

func (*PorServer) PinSigChainSuccess 

func (ps *PorServer) PinSigChainSuccess(hash []byte)

PinSigChainSuccess marks a sigchain as pinned to avoid it being pinned multiple times.

func (*PorServer) PinSrcSigChain 

func (ps *PorServer) PinSrcSigChain(signature []byte) error

PinSrcSigChain marks a src sigchain as pinned to avoid it being pinned multiple times.

func (*PorServer) PopSrcSigChainFromCache 

func (ps *PorServer) PopSrcSigChainFromCache(signature []byte) (*pb.SigChain, error)

PopSrcSigChainFromCache returns src sigchain and removes it from cache.

func (*PorServer) ShouldAddSigChainToCache 

func (ps *PorServer) ShouldAddSigChainToCache(currentHeight, voteForHeight uint32, sigHash []byte, replace bool) bool

func (*PorServer) ShouldSignDestSigChainElem 

func (ps *PorServer) ShouldSignDestSigChainElem(blockHash, lastHash []byte, sigChainLen int) bool

func (*PorServer) UpdateRelayMessage 

func (ps *PorServer) UpdateRelayMessage(relayMessage *pb.Relay, nextPubkey, prevNodeID []byte, mining bool) error

type RecentMiner 

type RecentMiner map[string]int

func GetRecentMiner 

func GetRecentMiner(blockHash []byte) (RecentMiner, error)

type SkipMiner 

type SkipMiner [][]byte

func GetSkipMiner 

func GetSkipMiner(blockHash []byte) (SkipMiner, error)

type Store 

type Store interface {
	GetHeightByBlockHash(hash common.Uint256) (uint32, error)
	GetHeaderWithCache(hash common.Uint256) (*block.Header, error)
	GetSigChainWithCache(hash common.Uint256) (*pb.SigChain, error)
	GetID(publicKey []byte, height uint32) ([]byte, error)
}

Store interface is used to avoid cyclic dependency

Source Files

View all Source files

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