go/src/crypto/elliptic/params.go

type CurveParams …

func (curve *CurveParams) Params() *CurveParams { … }

// polynomial returns x³ - 3x + b.
func (curve *CurveParams) polynomial(x *big.Int) *big.Int { … }

// IsOnCurve implements [Curve.IsOnCurve].
//
// Deprecated: the [CurveParams] methods are deprecated and are not guaranteed to
// provide any security property. For ECDH, use the [crypto/ecdh] package.
// For ECDSA, use the [crypto/ecdsa] package with a [Curve] value returned directly
// from [P224], [P256], [P384], or [P521].
func (curve *CurveParams) IsOnCurve(x, y *big.Int) bool { … }

// zForAffine returns a Jacobian Z value for the affine point (x, y). If x and
// y are zero, it assumes that they represent the point at infinity because (0,
// 0) is not on the any of the curves handled here.
func zForAffine(x, y *big.Int) *big.Int { … }

// affineFromJacobian reverses the Jacobian transform. See the comment at the
// top of the file. If the point is ∞ it returns 0, 0.
func (curve *CurveParams) affineFromJacobian(x, y, z *big.Int) (xOut, yOut *big.Int) { … }

// Add implements [Curve.Add].
//
// Deprecated: the [CurveParams] methods are deprecated and are not guaranteed to
// provide any security property. For ECDH, use the [crypto/ecdh] package.
// For ECDSA, use the [crypto/ecdsa] package with a [Curve] value returned directly
// from [P224], [P256], [P384], or [P521].
func (curve *CurveParams) Add(x1, y1, x2, y2 *big.Int) (*big.Int, *big.Int) { … }

// addJacobian takes two points in Jacobian coordinates, (x1, y1, z1) and
// (x2, y2, z2) and returns their sum, also in Jacobian form.
func (curve *CurveParams) addJacobian(x1, y1, z1, x2, y2, z2 *big.Int) (*big.Int, *big.Int, *big.Int) { … }

// Double implements [Curve.Double].
//
// Deprecated: the [CurveParams] methods are deprecated and are not guaranteed to
// provide any security property. For ECDH, use the [crypto/ecdh] package.
// For ECDSA, use the [crypto/ecdsa] package with a [Curve] value returned directly
// from [P224], [P256], [P384], or [P521].
func (curve *CurveParams) Double(x1, y1 *big.Int) (*big.Int, *big.Int) { … }

// doubleJacobian takes a point in Jacobian coordinates, (x, y, z), and
// returns its double, also in Jacobian form.
func (curve *CurveParams) doubleJacobian(x, y, z *big.Int) (*big.Int, *big.Int, *big.Int) { … }

// ScalarMult implements [Curve.ScalarMult].
//
// Deprecated: the [CurveParams] methods are deprecated and are not guaranteed to
// provide any security property. For ECDH, use the [crypto/ecdh] package.
// For ECDSA, use the [crypto/ecdsa] package with a [Curve] value returned directly
// from [P224], [P256], [P384], or [P521].
func (curve *CurveParams) ScalarMult(Bx, By *big.Int, k []byte) (*big.Int, *big.Int) { … }

// ScalarBaseMult implements [Curve.ScalarBaseMult].
//
// Deprecated: the [CurveParams] methods are deprecated and are not guaranteed to
// provide any security property. For ECDH, use the [crypto/ecdh] package.
// For ECDSA, use the [crypto/ecdsa] package with a [Curve] value returned directly
// from [P224], [P256], [P384], or [P521].
func (curve *CurveParams) ScalarBaseMult(k []byte) (*big.Int, *big.Int) { … }

func matchesSpecificCurve(params *CurveParams) (Curve, bool) { … }