ActiveGo 1.8Package ecdsa
Overview ▹
Index ▹
func Sign ¶
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 Verify ¶
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.
type PrivateKey ¶
PrivateKey represents a ECDSA private key.
type PrivateKey struct {
PublicKey
D *big.Int
}
func GenerateKey ¶
func GenerateKey(c elliptic.Curve, rand io.Reader) (*PrivateKey, error)
GenerateKey generates a public and private key pair.
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, msg []byte, opts crypto.SignerOpts) ([]byte, error)
Sign signs msg with priv, reading randomness from rand. This method is intended 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.
type PublicKey ¶
PublicKey represents an ECDSA public key.
type PublicKey struct {
elliptic.Curve
X, Y *big.Int
}