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Round up division for NUM_WINDOWS

This commit is contained in:
therealyingtong 2021-03-27 18:02:37 +08:00
parent 70ce1ca53f
commit 69d4c4c35a
1 changed files with 2 additions and 3 deletions
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5
src/constants.rs
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@ -21,8 +21,6 @@ pub(crate) const L_ORCHARD_BASE: usize = 255;
pub(crate) const L_VALUE: usize = 64;
// SWU hash-to-curve personalizations
/// SWU hash-to-curve personalization
/// This is used for the spending key base point and the nullifier base point K^Orchard
pub const ORCHARD_PERSONALIZATION: &str = "z.cash:Orchard";
@ -48,7 +46,8 @@ pub const FIXED_BASE_WINDOW_SIZE: usize = 3;
pub const H: usize = 1 << FIXED_BASE_WINDOW_SIZE;
/// Number of windows for a full-width scalar
pub const NUM_WINDOWS: usize = pallas::Base::NUM_BITS as usize / FIXED_BASE_WINDOW_SIZE;
pub const NUM_WINDOWS: usize =
(pallas::Base::NUM_BITS as usize + FIXED_BASE_WINDOW_SIZE - 1) / FIXED_BASE_WINDOW_SIZE;
/// Number of windows for a short signed scalar
pub const NUM_WINDOWS_SHORT: usize =