- License
- Botan is released under the Simplified BSD License (see LICENSE.md)
Elliptic curves over GF(p)
struct CurveGFp;
This class represents an elliptic curve over GF(p)
this()(auto ref const BigInt p, auto ref const BigInt a, auto ref const BigInt b);
- Parameters
BigInt p prime number of the field BigInt a first coefficient BigInt b second coefficient
Construct the elliptic curve E: y^2 = x^3 + ax + b over GF(p)
const ref const(BigInt) getA();
- Returns
- curve coefficient a
const ref const(BigInt) getB();
- Returns
- curve coefficient b
const ref const(BigInt) getP();
- Returns
- prime modulus of the field of the curve
Get prime modulus of the field of the curve
const ref const(BigInt) getR2();
- Returns
- Montgomery parameter r^2 % p
const ref const(BigInt) getAR();
- Returns
- a * r mod p
const ref const(BigInt) getBR();
- Returns
- b * r mod p
const word getPDash();
- Returns
- Montgomery parameter p-dash
const size_t getPWords();
- Returns
- p.sigWords()
void swap()(auto ref CurveGFp other);
- Parameters
CurveGFp other curve to swap values with
swaps the states of this and other, does not throw
const bool opEquals(ref const CurveGFp other);
- Parameters
CurveGFp other curve to compare with - Returns
- true iff this is the same curve as other
Equality operator
const int opCmp(ref CurveGFp rhs);
- Parameters
CurveGFp rhs a curve - Returns
- true iff lhs is not the same as rhs
Equality operator