bip0340

package
v1.0.5009 Latest Latest
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 Go to latest Published: Dec 27, 2024 License: Apache-2.0 Imports: 18 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	BIP0340_AUX       = "BIP0340/aux"
	BIP0340_NONCE     = "BIP0340/nonce"
	BIP0340_CHALLENGE = "BIP0340/challenge"
)

Variables

View Source 
var (
	ErrPrivateKey         = errors.New("go-cryptobin/bip0340: invalid PrivateKey")
	ErrParametersNotSetUp = errors.New("go-cryptobin/bip0340: parameters not set up before generating key")
	ErrInvalidK           = errors.New("go-cryptobin/bip0340: use another K")
	ErrInvalidASN1        = errors.New("go-cryptobin/bip0340: invalid ASN.1")
	ErrInvalidSignerOpts  = errors.New("go-cryptobin/bip0340: opts must be *SignerOpts")
)

Functions

func AddNamedCurve added in v1.0.5001 

func AddNamedCurve(curve elliptic.Curve, oid asn1.ObjectIdentifier)

func BatchVerify added in v1.0.5003 

func BatchVerify(pub []*PublicKey, m, sig [][]byte, hashFunc Hasher) bool

* BIP0340 batch verification functions.

func MarshalECPrivateKey added in v1.0.5001 

func MarshalECPrivateKey(key *PrivateKey) ([]byte, error)

MarshalECPrivateKey converts an EC private key to SEC 1, ASN.1 DER form.

This kind of key is commonly encoded in PEM blocks of type "EC PRIVATE KEY". For a more flexible key format which is not EC specific, use MarshalPKCS8PrivateKey.

func MarshalPrivateKey added in v1.0.5001 

func MarshalPrivateKey(key *PrivateKey) ([]byte, error)

Marshal PrivateKey to der

func MarshalPublicKey added in v1.0.5001 

func MarshalPublicKey(pub *PublicKey) ([]byte, error)

Marshal PublicKey to der

func NamedCurveFromOid added in v1.0.5001 

func NamedCurveFromOid(oid asn1.ObjectIdentifier) elliptic.Curve

func OidFromNamedCurve added in v1.0.5001 

func OidFromNamedCurve(curve elliptic.Curve) (asn1.ObjectIdentifier, bool)

func PrivateKeyTo 

func PrivateKeyTo(key *PrivateKey) []byte

输出私钥明文 output PrivateKey data

func PublicKeyTo 

func PublicKeyTo(key *PublicKey) []byte

输出公钥明文 output PublicKey data

func Sign 

func Sign(rand io.Reader, priv *PrivateKey, h Hasher, data []byte) (sig []byte, err error)

Sign data returns the ASN.1 encoded signature.

func SignBytes 

func SignBytes(rand io.Reader, priv *PrivateKey, h Hasher, data []byte) (sig []byte, err error)

Sign data returns the Bytes encoded signature.

func SignToRS 

func SignToRS(random io.Reader, priv *PrivateKey, hashFunc Hasher, msg []byte) (r, s *big.Int, err error)

* BIP0340 signature. * NOTE: because of the semi-deterministinc nonce generation * process, streaming mode is NOT supported for signing. * Hence the following all-in-one signature function.

func SignUsingKToRS 

func SignUsingKToRS(k *big.Int, priv *PrivateKey, hashFunc Hasher, msg []byte) (r, s *big.Int, err error)

sign with k

func Verify 

func Verify(pub *PublicKey, h Hasher, data, sig []byte) bool

Verify verifies the ASN.1 encoded signature, sig, M, of hash using the public key, pub. Its return value records whether the signature is valid.

func VerifyBytes 

func VerifyBytes(pub *PublicKey, h Hasher, data, sig []byte) bool

Verify verifies the Bytes encoded signature

func VerifyWithRS 

func VerifyWithRS(pub *PublicKey, hashFunc Hasher, data []byte, r, s *big.Int) bool

* BIP0340 verification functions.

Types

type CurveParams 

type CurveParams struct {
	P       *big.Int // the order of the underlying field
	N       *big.Int // the order of the base point
	B       *big.Int // the constant of the curve equation
	Gx, Gy  *big.Int // (x,y) of the base point
	BitSize int      // the size of the underlying field
	Name    string   // the canonical name of the curve
}

CurveParams contains the parameters of an elliptic curve and also provides a generic, non-constant time implementation of Curve.

func S256 

func S256() *CurveParams

The following conventions are used, with constants as defined for secp256k1. We note that adapting this specification to other elliptic curves is not straightforward and can result in an insecure scheme

func (*CurveParams) Add 

func (curve *CurveParams) Add(x1, y1, x2, y2 *big.Int) (*big.Int, *big.Int)

Add implements Curve.Add.

func (*CurveParams) Double 

func (curve *CurveParams) Double(x1, y1 *big.Int) (*big.Int, *big.Int)

Double implements Curve.Double.

func (*CurveParams) IsOnCurve 

func (curve *CurveParams) IsOnCurve(x, y *big.Int) bool

IsOnCurve implements Curve.IsOnCurve.

func (*CurveParams) Params 

func (curve *CurveParams) Params() *elliptic.CurveParams

func (*CurveParams) ScalarBaseMult 

func (curve *CurveParams) ScalarBaseMult(k []byte) (*big.Int, *big.Int)

ScalarBaseMult implements Curve.ScalarBaseMult.

func (*CurveParams) ScalarMult 

func (curve *CurveParams) ScalarMult(Bx, By *big.Int, k []byte) (*big.Int, *big.Int)

ScalarMult implements Curve.ScalarMult.

func (*CurveParams) Unmarshal 

func (curve *CurveParams) Unmarshal(data []byte) (x, y *big.Int)

Unmarshal implements elliptic.Unmarshal.

func (*CurveParams) UnmarshalCompressed 

func (curve *CurveParams) UnmarshalCompressed(data []byte) (x, y *big.Int)

UnmarshalCompressed implements elliptic.UnmarshalCompressed.

type Hasher 

type Hasher = func() hash.Hash

type PrivateKey 

type PrivateKey struct {
	PublicKey

	D *big.Int
}

bip0340 PrivateKey

func GenerateKey 

func GenerateKey(random io.Reader, c elliptic.Curve) (*PrivateKey, error)

Generate the PrivateKey

func NewPrivateKey 

func NewPrivateKey(curve elliptic.Curve, k []byte) (*PrivateKey, error)

New a PrivateKey from privatekey data

func ParseECPrivateKey added in v1.0.5001 

func ParseECPrivateKey(der []byte) (*PrivateKey, error)

ParseECPrivateKey parses an EC private key in SEC 1, ASN.1 DER form.

This kind of key is commonly encoded in PEM blocks of type "EC PRIVATE KEY".

func ParsePrivateKey added in v1.0.5001 

func ParsePrivateKey(derBytes []byte) (*PrivateKey, error)

Parse PrivateKey der

func (*PrivateKey) Equal 

func (priv *PrivateKey) Equal(x crypto.PrivateKey) bool

Equal reports whether pub and x have the same value.

func (*PrivateKey) Public 

func (priv *PrivateKey) Public() crypto.PublicKey

Public returns the public key corresponding to priv.

func (*PrivateKey) Sign 

func (priv *PrivateKey) Sign(rand io.Reader, digest []byte, opts crypto.SignerOpts) ([]byte, error)

crypto.Signer

type PublicKey 

type PublicKey struct {
	elliptic.Curve

	X, Y *big.Int
}

Schnorr Signatures for secp256k1 bip0340 PublicKey

func NewPublicKey 

func NewPublicKey(curve elliptic.Curve, k []byte) (*PublicKey, error)

根据公钥明文初始化公钥 New a PublicKey from publicKey data

func ParsePublicKey added in v1.0.5001 

func ParsePublicKey(derBytes []byte) (pub *PublicKey, err error)

Parse PublicKey der

func (*PublicKey) Equal 

func (pub *PublicKey) Equal(x crypto.PublicKey) bool

Equal reports whether pub and x have the same value.

func (*PublicKey) Verify 

func (pub *PublicKey) Verify(msg, sign []byte, opts crypto.SignerOpts) (bool, error)

Verify asn.1 marshal data

type SignerOpts 

type SignerOpts struct {
	Hash Hasher
}

SignerOpts contains options for creating and verifying EC-GDSA signatures.

func (*SignerOpts) GetHash 

func (opts *SignerOpts) GetHash() Hasher

GetHash returns func() hash.Hash

func (*SignerOpts) HashFunc 

func (opts *SignerOpts) HashFunc() crypto.Hash

HashFunc returns opts.Hash

Source Files

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