saymrwulf/curve25519-dalek-source
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tweak code arrangement to keep comments together

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Henry de Valence 2017-07-30 22:24:58 -07:00
parent aaefb90ed3
commit 63ee9d21ae
1 changed files with 8 additions and 8 deletions
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16
src/curve.rs
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@ -948,14 +948,6 @@ pub fn multiscalar_mult<'a, 'b, I, J>(scalars: I, points: J) -> ExtendedPoint
{ {
//assert_eq!(scalars.len(), points.len()); //assert_eq!(scalars.len(), points.len());
// Setting s_i = i-th scalar, compute
//
// s_i = s_{i,0} + s_{i,1}*16^1 + ... + s_{i,63}*16^63,
//
// with `-8 ≤ s_{i,j} < 8` for `0 ≤ j < 63` and `-8 ≤ s_{i,63} ≤ 8`.
let scalar_digits_list: Vec<_> = scalars.into_iter()
.map(|c| c.to_radix_16()).collect();
let lookup_tables: Vec<_> = points.into_iter() let lookup_tables: Vec<_> = points.into_iter()
.map(|P_i| { .map(|P_i| {
// Construct a lookup table of [P_i,2*P_i,3*P_i,4*P_i,5*P_i,6*P_i,7*P_i] // Construct a lookup table of [P_i,2*P_i,3*P_i,4*P_i,5*P_i,6*P_i,7*P_i]
@ -967,6 +959,14 @@ pub fn multiscalar_mult<'a, 'b, I, J>(scalars: I, points: J) -> ExtendedPoint
lookup_table lookup_table
}).collect(); }).collect();
// Setting s_i = i-th scalar, compute
//
// s_i = s_{i,0} + s_{i,1}*16^1 + ... + s_{i,63}*16^63,
//
// with `-8 ≤ s_{i,j} < 8` for `0 ≤ j < 63` and `-8 ≤ s_{i,63} ≤ 8`.
let scalar_digits_list: Vec<_> = scalars.into_iter()
.map(|c| c.to_radix_16()).collect();
// Compute s_1*P_1 + ... + s_n*P_n: since // Compute s_1*P_1 + ... + s_n*P_n: since
// //
// s_i*P_i = P_i*(s_{i,0} + s_{i,1}*16^1 + ... + s_{i,63}*16^63) // s_i*P_i = P_i*(s_{i,0} + s_{i,1}*16^1 + ... + s_{i,63}*16^63)