bec

May 14, 2021

Changes in this version

+ const MinSigLen

+ const PrivKeyBytesLen

+ const PubKeyBytesLenCompressed

+ const PubKeyBytesLenHybrid

+ const PubKeyBytesLenUncompressed

+ var ErrInvalidMAC = errors.New("invalid mac hash")

+ func Decrypt(priv *PrivateKey, in []byte) ([]byte, error)

+ func Encrypt(pubkey *PublicKey, in []byte) ([]byte, error)

+ func GenerateSharedSecret(privkey *PrivateKey, pubkey *PublicKey) []byte

+ func IsCompressedPubKey(pubKey []byte) bool

+ func NAF(k []byte) ([]byte, []byte)

+ func PrivKeyFromBytes(curve elliptic.Curve, pk []byte) (*PrivateKey, *PublicKey)

+ func SignCompact(curve *KoblitzCurve, key *PrivateKey, hash []byte, isCompressedKey bool) ([]byte, error)

+ type KoblitzCurve struct

+ H int

+ func S256() *KoblitzCurve

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

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

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

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

+ func (curve *KoblitzCurve) Q() *big.Int

+ func (curve *KoblitzCurve) QPlus1Div4() *big.Int

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

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

+ type PrivateKey ecdsa.PrivateKey

+ func NewPrivateKey(curve elliptic.Curve) (*PrivateKey, error)

+ func (p *PrivateKey) PubKey() *PublicKey

+ func (p *PrivateKey) Serialise() []byte

+ func (p *PrivateKey) Sign(hash []byte) (*Signature, error)

+ func (p *PrivateKey) ToECDSA() *ecdsa.PrivateKey

+ type PublicKey ecdsa.PublicKey

+ func ParsePubKey(pubKeyStr []byte, curve *KoblitzCurve) (key *PublicKey, err error)

+ func RecoverCompact(curve *KoblitzCurve, signature, hash []byte) (*PublicKey, bool, error)

+ func (p *PublicKey) IsEqual(otherPubKey *PublicKey) bool

+ func (p *PublicKey) SerialiseCompressed() []byte

+ func (p *PublicKey) SerialiseHybrid() []byte

+ func (p *PublicKey) SerialiseUncompressed() []byte

+ func (p *PublicKey) ToECDSA() *ecdsa.PublicKey

+ type Signature struct

+ R *big.Int

+ S *big.Int

+ func ParseDERSignature(sigStr []byte, curve elliptic.Curve) (*Signature, error)

+ func ParseSignature(sigStr []byte, curve elliptic.Curve) (*Signature, error)

+ func (sig *Signature) IsEqual(otherSig *Signature) bool

+ func (sig *Signature) Serialise() []byte

+ func (sig *Signature) Verify(hash []byte, pubKey *PublicKey) bool