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threshold_crypto
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Replace ring with tiny-keccak.

This commit is contained in:
Andreas Fackler 2018-08-09 11:59:31 +02:00 committed by Andreas Fackler
parent 4c533e6873
commit 2d17d0e783
2 changed files with 6 additions and 7 deletions
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2
Cargo.toml
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@ -18,9 +18,9 @@ log = "0.4.1"
pairing = { version = "0.14.2", features = ["u128-support"] }
rand = "0.4.2"
rand_derive = "0.3.1"
ring = "^0.12"
serde = "1.0.55"
serde_derive = "1.0.55"
tiny-keccak = "1.4"
[dev-dependencies]
bincode = "1.0.0"

11
src/lib.rs
View File

@ -14,10 +14,10 @@ extern crate pairing;
extern crate rand;
#[macro_use]
extern crate rand_derive;
extern crate ring;
extern crate serde;
#[macro_use]
extern crate serde_derive;
extern crate tiny_keccak;
pub mod error;
mod into_fr;
@ -33,7 +33,7 @@ use init_with::InitWith;
use pairing::bls12_381::{Bls12, Fr, G1, G1Affine, G2, G2Affine};
use pairing::{CurveAffine, CurveProjective, Engine, Field};
use rand::{ChaChaRng, OsRng, Rng, SeedableRng};
use ring::digest;
use tiny_keccak::sha3_256;
use error::{Error, Result};
use into_fr::IntoFr;
@ -445,7 +445,7 @@ impl SecretKeySet {
/// Returns a hash of the given message in `G2`.
fn hash_g2<M: AsRef<[u8]>>(msg: M) -> G2 {
let digest = digest::digest(&digest::SHA256, msg.as_ref());
let digest = sha3_256(msg.as_ref());
let seed = <[u32; CHACHA_RNG_SEED_SIZE]>::init_with_indices(|i| {
BigEndian::read_u32(&digest.as_ref()[(4 * i)..(4 * i + 4)])
});
@ -458,8 +458,7 @@ fn hash_g1_g2<M: AsRef<[u8]>>(g1: G1, msg: M) -> G2 {
// If the message is large, hash it, otherwise copy it.
// TODO: Benchmark and optimize the threshold.
let mut msg = if msg.as_ref().len() > 64 {
let digest = digest::digest(&digest::SHA256, msg.as_ref());
digest.as_ref().to_vec()
sha3_256(msg.as_ref()).to_vec()
} else {
msg.as_ref().to_vec()
};
@ -469,7 +468,7 @@ fn hash_g1_g2<M: AsRef<[u8]>>(g1: G1, msg: M) -> G2 {
/// Returns a hash of the group element with the specified length in bytes.
fn hash_bytes(g1: G1, len: usize) -> Vec<u8> {
let digest = digest::digest(&digest::SHA256, g1.into_affine().into_compressed().as_ref());
let digest = sha3_256(g1.into_affine().into_compressed().as_ref());
let seed = <[u32; CHACHA_RNG_SEED_SIZE]>::init_with_indices(|i| {
BigEndian::read_u32(&digest.as_ref()[(4 * i)..(4 * i + 4)])
});