package ecdsa

Import Path
	crypto/ecdsa (on golang.org and go.dev)

Dependency Relation
	imports 11 packages, and imported by 2 packages

Involved Source Files
	d-> ecdsa.go
	    ecdsa_noasm.go

Exported Type Names

type PrivateKey (struct) PrivateKey represents an ECDSA private key. D *big.Int PublicKey PublicKey PublicKey.Curve elliptic.Curve PublicKey.X *big.Int PublicKey.Y *big.Int Add returns the sum of (x1,y1) and (x2,y2) Double returns 2*(x,y) Equal reports whether priv and x have the same value. See PublicKey.Equal for details on how Curve is compared. IsOnCurve reports whether the given (x,y) lies on the curve. Params returns the parameters for the curve. Public returns the public key corresponding to priv. ScalarBaseMult returns k*G, where G is the base point of the group and k is an integer in big-endian form. ScalarMult returns k*(Bx,By) where k is a number in big-endian form. Sign signs digest with priv, reading randomness from rand. The opts argument is not currently used but, in keeping with the crypto.Signer interface, should be the hash function used to digest the message. This method implements crypto.Signer, which is an interface to support keys where the private part is kept in, for example, a hardware module. Common uses should use the Sign function in this package directly. *T : crypto.Signer T : crypto/elliptic.Curve func GenerateKey(c elliptic.Curve, rand io.Reader) (*PrivateKey, error) func crypto/x509.ParseECPrivateKey(der []byte) (*PrivateKey, error) func Sign(rand io.Reader, priv *PrivateKey, hash []byte) (r, s *big.Int, err error) func SignASN1(rand io.Reader, priv *PrivateKey, hash []byte) ([]byte, error) func crypto/x509.MarshalECPrivateKey(key *PrivateKey) ([]byte, error)
type PublicKey (struct) PublicKey represents an ECDSA public key. Curve elliptic.Curve X *big.Int Y *big.Int Add returns the sum of (x1,y1) and (x2,y2) Double returns 2*(x,y) Equal reports whether pub and x have the same value. Two keys are only considered to have the same value if they have the same Curve value. Note that for example elliptic.P256() and elliptic.P256().Params() are different values, as the latter is a generic not constant time implementation. IsOnCurve reports whether the given (x,y) lies on the curve. Params returns the parameters for the curve. ScalarBaseMult returns k*G, where G is the base point of the group and k is an integer in big-endian form. ScalarMult returns k*(Bx,By) where k is a number in big-endian form. T : crypto/elliptic.Curve func Verify(pub *PublicKey, hash []byte, r, s *big.Int) bool func VerifyASN1(pub *PublicKey, hash, sig []byte) bool
Exported Values
func GenerateKey(c elliptic.Curve, rand io.Reader) (*PrivateKey, error) GenerateKey generates a public and private key pair.
func Sign(rand io.Reader, priv *PrivateKey, hash []byte) (r, s *big.Int, err error) Sign signs a hash (which should be the result of hashing a larger message) using the private key, priv. If the hash is longer than the bit-length of the private key's curve order, the hash will be truncated to that length. It returns the signature as a pair of integers. The security of the private key depends on the entropy of rand.
func SignASN1(rand io.Reader, priv *PrivateKey, hash []byte) ([]byte, error) SignASN1 signs a hash (which should be the result of hashing a larger message) using the private key, priv. If the hash is longer than the bit-length of the private key's curve order, the hash will be truncated to that length. It returns the ASN.1 encoded signature. The security of the private key depends on the entropy of rand.
func Verify(pub *PublicKey, hash []byte, r, s *big.Int) bool Verify verifies the signature in r, s of hash using the public key, pub. Its return value records whether the signature is valid.
func VerifyASN1(pub *PublicKey, hash, sig []byte) bool VerifyASN1 verifies the ASN.1 encoded signature, sig, of hash using the public key, pub. Its return value records whether the signature is valid.