Crypto.PubKey.ECC.P256

P256 support

Documentation

data Scalar

A P256 scalar

Instances

Eq Scalar

ByteArrayAccess Scalar

data Point

A P256 point

Instances

Eq Point

Show Point

point arithmetic

pointAdd :: Point -> Point -> Point

Add a point to another point

pointMul :: Scalar -> Point -> Point

Multiply a point by a scalar

pointsMulVarTime :: Scalar -> Scalar -> Point -> Point

multiply the point p with n2 and add a lifted to curve value @n1

n1 * G + n2 * p

pointIsValid :: Point -> Bool

Check if a Point is valid

toPoint :: Scalar -> Point

Lift to curve a scalar

Using the curve generator as base point compute:

scalar * G

scalar arithmetic

scalarZero :: Scalar

The scalar representing 0

scalarAdd :: Scalar -> Scalar -> Scalar

Perform addition between two scalars

a + b

scalarSub :: Scalar -> Scalar -> Scalar

Perform subtraction between two scalars

a - b

scalarInv :: Scalar -> Scalar

Give the inverse of the scalar

1 / a

scalarInvVarTime :: Scalar -> Scalar

similar to scalarInv but instead of trying to be constant time, do it as fast as possible

scalarCmp :: Scalar -> Scalar -> Ordering

Compare 2 Scalar

scalarFromBinary :: ByteArrayAccess ba => ba -> CryptoFailable Scalar

convert a scalar from binary

scalarToBinary :: ByteArray ba => Scalar -> ba

convert a scalar to binary