saymrwulf/curve25519-dalek-source
1
0
Fork 0
mirror of https://github.com/saymrwulf/curve25519-dalek-source.git synced 2026-09-06 20:41:14 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Merge pull request #325 from rubdos/const_fn_for_scalar_from_bits

Browse source 
Make Scalar::from_bits a const fn.
This commit is contained in:
Henry de Valence 2020-05-29 12:26:31 -07:00 committed by GitHub
commit e342f25c4e
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
src/scalar.rs
View file

@ -243,7 +243,7 @@ impl Scalar {
/// This function is intended for applications like X25519 which /// This function is intended for applications like X25519 which
/// require specific bit-patterns when performing scalar /// require specific bit-patterns when performing scalar
/// multiplication. /// multiplication.
pub fn from_bits(bytes: [u8; 32]) -> Scalar { pub const fn from_bits(bytes: [u8; 32]) -> Scalar {
let mut s = Scalar{bytes}; let mut s = Scalar{bytes};
// Ensure that s < 2^255 by masking the high bit // Ensure that s < 2^255 by masking the high bit
s.bytes[31] &= 0b0111_1111; s.bytes[31] &= 0b0111_1111;