saymrwulf/curve25519-dalek-source
1
0
Fork 0
mirror of https://github.com/saymrwulf/curve25519-dalek-source.git synced 2026-09-05 20:30:57 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Apply suggestion by @hdevalence

Browse source 
Co-Authored-By: Henry de Valence <hdevalence@hdevalence.ca>
This commit is contained in:
Fabian Drinck 2019-08-07 19:43:10 +02:00 committed by GitHub
parent 53da2aaaf4
commit 26ae185bc9
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
1 changed files with 2 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
src/edwards.rs
View file

@ -190,7 +190,8 @@ impl CompressedEdwardsY {
if is_valid_y_coord.unwrap_u8() != 1u8 { return None; } if is_valid_y_coord.unwrap_u8() != 1u8 { return None; }
// Flip the sign of X if it's not correct // FieldElement::sqrt_ratio_i always returns the nonnegative square root,
// so we negate according to the supplied sign bit.
let compressed_sign_bit = Choice::from(self.as_bytes()[31] >> 7); let compressed_sign_bit = Choice::from(self.as_bytes()[31] >> 7);
X.conditional_negate(compressed_sign_bit); X.conditional_negate(compressed_sign_bit);