internal

package

v0.0.0-...-9a9e30f Latest Latest Go to latest Published: Mar 12, 2024 License: MIT Imports: 9 Imported by: 0

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Repository

github.com/mkhattat/frost

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Documentation ¶

Overview ¶

Package internal provides values, structures, and functions to operate FROST that are not part of the public API.

Index ¶

Variables
func Concatenate(input ...[]byte) []byte
func IntegerToScalar(g group.Group, i int) *group.Scalar
func RandomBytes(length int) []byte
type BindingFactor
type BindingFactorList
- func (b BindingFactorList) BindingFactorForParticipant(id *group.Scalar) *group.Scalar
type Ciphersuite
type Commitment
type CommitmentList

Constants ¶

This section is empty.

Variables ¶

View Source

var (
	// ErrInvalidParameters indicates that wrong input has been provided.
	ErrInvalidParameters = errors.New("invalid parameters")

	// ErrInvalidCiphersuite indicates a non-supported ciphersuite is being used.
	ErrInvalidCiphersuite = errors.New("ciphersuite not available")

	// ErrInvalidParticipantBackup indicates the participant's encoded backup is not valid.
	ErrInvalidParticipantBackup = errors.New("invalid backup")
)

Functions ¶

func Concatenate ¶

func Concatenate(input ...[]byte) []byte

Concatenate returns the concatenation of all bytes composing the input elements.

func IntegerToScalar ¶

func IntegerToScalar(g group.Group, i int) *group.Scalar

IntegerToScalar creates a group.Scalar given an int.

func RandomBytes ¶

func RandomBytes(length int) []byte

RandomBytes returns length random bytes (wrapper for crypto/rand).

Types ¶

type BindingFactor ¶

type BindingFactor struct {
	Identifier    *group.Scalar
	BindingFactor *group.Scalar
}

BindingFactor holds the binding factor scalar for the given identifier.

type BindingFactorList ¶

type BindingFactorList []*BindingFactor

BindingFactorList a list of BindingFactor.

func (BindingFactorList) BindingFactorForParticipant ¶

func (b BindingFactorList) BindingFactorForParticipant(id *group.Scalar) *group.Scalar

BindingFactorForParticipant returns the binding factor for a given participant identifier in the list.

type Ciphersuite ¶

type Ciphersuite struct {
	ContextString []byte
	Hash          hash.Hashing
	Group         group.Group
}

Ciphersuite combines the group and hashing routines.

func (Ciphersuite) H1 ¶

func (c Ciphersuite) H1(input []byte) *group.Scalar

H1 hashes the input and proves the "rho" DST.

func (Ciphersuite) H2 ¶

func (c Ciphersuite) H2(input []byte) *group.Scalar

H2 hashes the input and proves the "chal" DST.

func (Ciphersuite) H3 ¶

func (c Ciphersuite) H3(input []byte) *group.Scalar

H3 hashes the input and proves the "nonce" DST.

func (Ciphersuite) H4 ¶

func (c Ciphersuite) H4(msg []byte) []byte

H4 hashes the input and proves the "msg" DST.

func (Ciphersuite) H5 ¶

func (c Ciphersuite) H5(msg []byte) []byte

H5 hashes the input and proves the "com" DST.

func (Ciphersuite) HDKG ¶

func (c Ciphersuite) HDKG(msg []byte) *group.Scalar

HDKG hashes the input to the "dkg" DST.

type Commitment ¶

type Commitment struct {
	ID           *group.Scalar
	HidingNonce  *group.Element
	BindingNonce *group.Element
}

Commitment represent a participant's commitment.

type CommitmentList ¶

type CommitmentList []*Commitment

CommitmentList is a sortable list of commitments.

func (CommitmentList) ComputeBindingFactors ¶

func (c CommitmentList) ComputeBindingFactors(cs Ciphersuite, msg []byte) (l BindingFactorList, r [][]byte)

ComputeBindingFactors computes binding factors based on the participant commitment list and the message to be signed. The rhoInputs are temporarily added for testing purposes and can be ignored.

func (CommitmentList) ComputeGroupCommitment ¶

func (c CommitmentList) ComputeGroupCommitment(cs Ciphersuite, list BindingFactorList) *group.Element

ComputeGroupCommitment creates the group commitment from a commitment list.

func (CommitmentList) Encode ¶

func (c CommitmentList) Encode() []byte

Encode serializes a whole commitment list.

func (CommitmentList) IsSorted ¶

func (c CommitmentList) IsSorted() bool

IsSorted returns whether the list is sorted in ascending order by identifier.

func (CommitmentList) Len ¶

func (c CommitmentList) Len() int

Len implements the sort.Interface Len method.

func (CommitmentList) Less ¶

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

Less implements the sort.Interface Less method.

func (CommitmentList) Participants ¶

func (c CommitmentList) Participants() []*group.Scalar

Participants returns the list of participants in the commitment list.

func (CommitmentList) Sort ¶

func (c CommitmentList) Sort()

Sort sorts the list the ascending order of identifiers.

func (CommitmentList) Swap ¶

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

Swap implements the sort.Interface Swap method.

Source Files ¶

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Directories ¶

Path	Synopsis
schnorr Package schnorr provides Schnorr signature operations.	Package schnorr provides Schnorr signature operations.

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