Module curve25519_dalek::scalar
[−]
[src]
Arithmetic for scalar multiplication.
The Ed25519 basepoint P has prime order
l = 2252 + 27742317777372353535851937790883648493.
Thus a multiple aP of the basepoint (with a ∈ ℤ) depends only
on the value of a (mod l), or equivalently, the image of a in
the quotient ℤ/lℤ.
The Scalar struct represents an element in ℤ/lℤ.
In contrast to FieldElements, Scalars are stored in
memory as bytes, allowing easy access to the bits of the Scalar
when multiplying a point by a scalar. For efficient arithmetic
between two scalars, the UnpackedScalar struct (internally
either Scalar32 or Scalar64) is stored as limbs.
Structs
| Scalar |
The |