Struct Curve 

pub struct Curve { /* private fields */ }

Domain parameters of a short Weierstrass curve y² = x³ + a·x + b over a prime field.

The curve module has the common curves. Use Curve::new for any other.

Implementations

impl Curve

pub const fn new( p: &'static [u8], a: &'static [u8], b: &'static [u8], gx: &'static [u8], gy: &'static [u8], n: &'static [u8], ) -> Self

Builds a curve from its domain parameters.

All values are big-endian and must have the same length:

• p: the field modulus.
• a, b: the curve coefficients.
• gx, gy: the coordinates of the generator.
• n: the order of the generator. Pad it with zeros on the left if it is shorter than the field.

Panics

Panics if the values do not all have the same length, or if that length is larger than MAX_CURVE_LEN.

pub const fn size(&self) -> usize

Length in bytes of a coordinate, a scalar or a signature component on this curve.

pub const fn order_bits(&self) -> u32

Length in bits of the order of the generator.

pub const fn field_bits(&self) -> u32

Length in bits of the field modulus.

pub const fn generator(&self) -> Point<'static>

The generator point.

pub const fn n_bytes(&self) -> &'static [u8]

The order of the generator, big-endian and Curve::size bytes long.

Scalars, private keys and signature components must be nonzero and smaller than this.