package elliptic

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

Dependency Relation
	imports 3 packages, and imported by 3 packages

Involved Source Files
	d-> elliptic.go
	    p224.go
	    p256_asm.go
	    p256_asm_amd64.s

Exported Type Names

type Curve (interface) A Curve represents a short-form Weierstrass curve with a=-3. Note that the point at infinity (0, 0) is not considered on the curve, and although it can be returned by Add, Double, ScalarMult, or ScalarBaseMult, it can't be marshaled or unmarshaled, and IsOnCurve will return false for it. Add returns the sum of (x1,y1) and (x2,y2) Double returns 2*(x,y) 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. *CurveParams crypto/ecdsa.PrivateKey crypto/ecdsa.PublicKey func P224() Curve func P256() Curve func P384() Curve func P521() Curve func GenerateKey(curve Curve, rand io.Reader) (priv []byte, x, y *big.Int, err error) func Marshal(curve Curve, x, y *big.Int) []byte func MarshalCompressed(curve Curve, x, y *big.Int) []byte func Unmarshal(curve Curve, data []byte) (x, y *big.Int) func UnmarshalCompressed(curve Curve, data []byte) (x, y *big.Int) func crypto/ecdsa.GenerateKey(c Curve, rand io.Reader) (*ecdsa.PrivateKey, error)
type CurveParams (struct) CurveParams contains the parameters of an elliptic curve and also provides a generic, non-constant time implementation of Curve. // the constant of the curve equation // the size of the underlying field // (x,y) of the base point // (x,y) of the base point // the order of the base point // the canonical name of the curve // the order of the underlying field (*T) Add(x1, y1, x2, y2 *big.Int) (*big.Int, *big.Int) (*T) Double(x1, y1 *big.Int) (*big.Int, *big.Int) (*T) IsOnCurve(x, y *big.Int) bool (*T) Params() *CurveParams (*T) ScalarBaseMult(k []byte) (*big.Int, *big.Int) (*T) ScalarMult(Bx, By *big.Int, k []byte) (*big.Int, *big.Int) *T : Curve func Curve.Params() *CurveParams func (*CurveParams).Params() *CurveParams
Exported Values
func GenerateKey(curve Curve, rand io.Reader) (priv []byte, x, y *big.Int, err error) GenerateKey returns a public/private key pair. The private key is generated using the given reader, which must return random data.
func Marshal(curve Curve, x, y *big.Int) []byte Marshal converts a point on the curve into the uncompressed form specified in section 4.3.6 of ANSI X9.62.
func MarshalCompressed(curve Curve, x, y *big.Int) []byte MarshalCompressed converts a point on the curve into the compressed form specified in section 4.3.6 of ANSI X9.62.
func P224() Curve P224 returns a Curve which implements P-224 (see FIPS 186-3, section D.2.2). The cryptographic operations are implemented using constant-time algorithms.
func P256() Curve P256 returns a Curve which implements NIST P-256 (FIPS 186-3, section D.2.3), also known as secp256r1 or prime256v1. The CurveParams.Name of this Curve is "P-256". Multiple invocations of this function will return the same value, so it can be used for equality checks and switch statements. The cryptographic operations are implemented using constant-time algorithms.
func P384() Curve P384 returns a Curve which implements NIST P-384 (FIPS 186-3, section D.2.4), also known as secp384r1. The CurveParams.Name of this Curve is "P-384". Multiple invocations of this function will return the same value, so it can be used for equality checks and switch statements. The cryptographic operations do not use constant-time algorithms.
func P521() Curve P521 returns a Curve which implements NIST P-521 (FIPS 186-3, section D.2.5), also known as secp521r1. The CurveParams.Name of this Curve is "P-521". Multiple invocations of this function will return the same value, so it can be used for equality checks and switch statements. The cryptographic operations do not use constant-time algorithms.
func Unmarshal(curve Curve, data []byte) (x, y *big.Int) Unmarshal converts a point, serialized by Marshal, into an x, y pair. It is an error if the point is not in uncompressed form or is not on the curve. On error, x = nil.
func UnmarshalCompressed(curve Curve, data []byte) (x, y *big.Int) UnmarshalCompressed converts a point, serialized by MarshalCompressed, into an x, y pair. It is an error if the point is not in compressed form or is not on the curve. On error, x = nil.