bign

Sep 18, 2024

Changes in this version

+ const BELT_BLOCK_LEN

+ const MAX_DIGEST_SIZE

+ var ErrAdata = errors.New("go-cryptobin/bign: invalid adata")

+ var ErrInvalidASN1 = errors.New("go-cryptobin/bign: invalid ASN.1")

+ var ErrInvalidSignerOpts = errors.New("go-cryptobin/bign: opts must be *SignerOpts")

+ var ErrParametersNotSetUp = errors.New("go-cryptobin/bign: parameters not set up before generating key")

+ var ErrPrivateKey = errors.New("go-cryptobin/bign: invalid PrivateKey")

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

+ func BitsToBytes(bits int) int

+ func GetOidFromAdata(adata []byte) (oid []byte, err error)

+ func GetTFromAdata(adata []byte) (t []byte, err error)

+ func MakeAdata(oid, t []byte) (adata []byte)

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

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

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

+ func NamedCurveFromOid(oid asn1.ObjectIdentifier) elliptic.Curve

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

+ func PrivateKeyTo(key *PrivateKey) []byte

+ func PublicKeyTo(key *PublicKey) []byte

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

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

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

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

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

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

+ type Hasher = func() hash.Hash

+ type PrivateKey struct

+ D *big.Int

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

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

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

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

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

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

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

+ type PublicKey struct

+ X *big.Int

+ Y *big.Int

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

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

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

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

+ type SignerOpts struct

+ Adata []byte

+ Hash Hasher

+ func (opts *SignerOpts) GetAdata() []byte

+ func (opts *SignerOpts) GetHash() Hasher

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