consensushashing

Documentation

Index

• func BlockHash(block *externalapi.DomainBlock) *externalapi.DomainHash
• func CalculateSignatureHashECDSA(tx *externalapi.DomainTransaction, inputIndex int, hashType SigHashType, ...) (*externalapi.DomainHash, error)
• func CalculateSignatureHashSchnorr(tx *externalapi.DomainTransaction, inputIndex int, hashType SigHashType, ...) (*externalapi.DomainHash, error)
• func HeaderHash(header externalapi.BaseBlockHeader) *externalapi.DomainHash
• func TransactionHash(tx *externalapi.DomainTransaction) *externalapi.DomainHash
• func TransactionID(tx *externalapi.DomainTransaction) *externalapi.DomainTransactionID
• func TransactionIDs(txs []*externalapi.DomainTransaction) []*externalapi.DomainTransactionID
• type SigHashType
  • func (sht SigHashType) IsStandardSigHashType() bool
• type SighashReusedValues

Functions

func BlockHash

func BlockHash(block *externalapi.DomainBlock) *externalapi.DomainHash

BlockHash returns the given block's hash

func CalculateSignatureHashECDSA

func CalculateSignatureHashECDSA(tx *externalapi.DomainTransaction, inputIndex int, hashType SigHashType,
	reusedValues *SighashReusedValues) (*externalapi.DomainHash, error)

CalculateSignatureHashECDSA will, given a script and hash type calculate the signature hash to be used for signing and verification for ECDSA. This returns error only if one of the provided parameters are consensus-invalid.

func CalculateSignatureHashSchnorr

func CalculateSignatureHashSchnorr(tx *externalapi.DomainTransaction, inputIndex int, hashType SigHashType,
	reusedValues *SighashReusedValues) (*externalapi.DomainHash, error)

CalculateSignatureHashSchnorr will, given a script and hash type calculate the signature hash to be used for signing and verification for Schnorr. This returns error only if one of the provided parameters are consensus-invalid.

func HeaderHash

func HeaderHash(header externalapi.BaseBlockHeader) *externalapi.DomainHash

HeaderHash returns the given header's hash

func TransactionHash

func TransactionHash(tx *externalapi.DomainTransaction) *externalapi.DomainHash

TransactionHash returns the transaction hash.

func TransactionID

func TransactionID(tx *externalapi.DomainTransaction) *externalapi.DomainTransactionID

TransactionID generates the Hash for the transaction without the signature script and payload field.

func TransactionIDs

func TransactionIDs(txs []*externalapi.DomainTransaction) []*externalapi.DomainTransactionID

TransactionIDs converts the provided slice of DomainTransactions to a corresponding slice of TransactionIDs

Types

type SigHashType

type SigHashType uint8

SigHashType represents hash type bits at the end of a signature.

const (
	SigHashAll          SigHashType = 0b00000001
	SigHashNone         SigHashType = 0b00000010
	SigHashSingle       SigHashType = 0b00000100
	SigHashAnyOneCanPay SigHashType = 0b10000000

	// SigHashMask defines the number of bits of the hash type which is used
	// to identify which outputs are signed.
	SigHashMask = 0b00000111
)

Hash type bits from the end of a signature.

func (SigHashType) IsStandardSigHashType

func (sht SigHashType) IsStandardSigHashType() bool

IsStandardSigHashType returns true if sht represents a standard SigHashType

type SighashReusedValues

type SighashReusedValues struct {
	// contains filtered or unexported fields
}

SighashReusedValues holds all fields used in the calculation of a transaction's sigHash, that are the same for all transaction inputs. Reuse of such values prevents the quadratic hashing problem.