vrfEd

package

v1.0.2 Latest Latest Go to latest Published: Aug 30, 2019 License: GPL-3.0, GPL-3.0 Imports: 7 Imported by: 0

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Repository

github.com/palletone/go-palletone

Links

Open Source Insights

Documentation ¶

Index ¶

Constants
Variables
func ECP2OS(P *edwards25519.ExtendedGroupElement) []byte
func ECP2OSProj(P *edwards25519.ProjectiveGroupElement) []byte
func ECVRF_decode_proof(pi []byte) (r *edwards25519.ExtendedGroupElement, c *[N2]byte, s *[N2]byte, err error)
func ECVRF_hash_points(ps ...[]byte) *big.Int
func ECVRF_hash_to_curve(m []byte, pk []byte) *edwards25519.ExtendedGroupElement
func ECVRF_proof2hash(pi []byte) []byte
func ECVRF_prove(pk []byte, sk []byte, m []byte) (pi []byte, err error)
func ECVRF_verify(pk []byte, pi []byte, m []byte) (bool, error)
func ExtendedGroupElementCMove(t, u *edwards25519.ExtendedGroupElement, b int32)
func F2IP(f *[32]byte) *big.Int
func G() *edwards25519.ExtendedGroupElement
func GeAdd(p, qe *edwards25519.ExtendedGroupElement) *edwards25519.ExtendedGroupElement
func GeDouble(p *edwards25519.ExtendedGroupElement) *edwards25519.ExtendedGroupElement
func GeScalarMult(h *edwards25519.ExtendedGroupElement, a *[32]byte) *edwards25519.ExtendedGroupElement
func I2OSP(b *big.Int, n int) []byte
func IP2F(b *big.Int) *[32]byte
func OS2ECP(os []byte, sign byte) *edwards25519.ExtendedGroupElement
func OS2IP(os []byte) *big.Int
func S2OS(s []byte) []byte
func ToCached(r *CachedGroupElement, p *edwards25519.ExtendedGroupElement)
type CachedGroupElement

Constants ¶

View Source

const (
	N2 = 32 // ceil(log2(q) / 8)
	N  = N2 / 2

	NOSIGN = 3
)

View Source

const (
	// PublicKeySize is the size, in bytes, of public keys as used in this package.
	PublicKeySize = 32
	// PrivateKeySize is the size, in bytes, of private keys as used in this package.
	PrivateKeySize = 64
	// SignatureSize is the size, in bytes, of signatures generated and verified by this package.
	SignatureSize = 64
)

Variables ¶

View Source

var (
	ErrMalformedInput = errors.New("ECVRF: malformed input")
	ErrDecodeError    = errors.New("ECVRF: decode error")
	ErrInternalError  = errors.New("ECVRF: internal error")
)

Functions ¶

func ECP2OS ¶

func ECP2OS(P *edwards25519.ExtendedGroupElement) []byte

func ECP2OSProj ¶

func ECP2OSProj(P *edwards25519.ProjectiveGroupElement) []byte

func ECVRF_decode_proof ¶

func ECVRF_decode_proof(pi []byte) (r *edwards25519.ExtendedGroupElement, c *[N2]byte, s *[N2]byte, err error)

func ECVRF_hash_points ¶

func ECVRF_hash_points(ps ...[]byte) *big.Int

func ECVRF_hash_to_curve ¶

func ECVRF_hash_to_curve(m []byte, pk []byte) *edwards25519.ExtendedGroupElement

func ECVRF_proof2hash ¶

func ECVRF_proof2hash(pi []byte) []byte

func ECVRF_prove ¶

func ECVRF_prove(pk []byte, sk []byte, m []byte) (pi []byte, err error)

assume <pk, sk> were generated by ed25519.GenerateKey()

func ECVRF_verify ¶

func ECVRF_verify(pk []byte, pi []byte, m []byte) (bool, error)

func ExtendedGroupElementCMove ¶

func ExtendedGroupElementCMove(t, u *edwards25519.ExtendedGroupElement, b int32)

func F2IP ¶

func F2IP(f *[32]byte) *big.Int

convert a field number (in LittleEndian) to a big int

func G ¶

func G() *edwards25519.ExtendedGroupElement

func GeAdd ¶

func GeAdd(p, qe *edwards25519.ExtendedGroupElement) *edwards25519.ExtendedGroupElement

func GeDouble ¶

func GeDouble(p *edwards25519.ExtendedGroupElement) *edwards25519.ExtendedGroupElement

func GeScalarMult ¶

func GeScalarMult(h *edwards25519.ExtendedGroupElement, a *[32]byte) *edwards25519.ExtendedGroupElement

func I2OSP ¶

func I2OSP(b *big.Int, n int) []byte

func IP2F ¶

func IP2F(b *big.Int) *[32]byte

func OS2ECP ¶

func OS2ECP(os []byte, sign byte) *edwards25519.ExtendedGroupElement

func OS2IP ¶

func OS2IP(os []byte) *big.Int

func S2OS ¶

func S2OS(s []byte) []byte

just prepend the sign octet

func ToCached ¶

func ToCached(r *CachedGroupElement, p *edwards25519.ExtendedGroupElement)

Types ¶

type CachedGroupElement ¶

type CachedGroupElement struct {
	Z, T2d edwards25519.FieldElement
	// contains filtered or unexported fields
}

copied from edwards25519.go and const.go in golang.org/x/crypto/ed25519/internal/edwards25519

Source Files ¶

View all Source files

vrf_ed25519.go

Directories ¶

Path	Synopsis
edwards25519
gen

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