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Migrate to blake2b_simd and blake2s_simd crates

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The primary reason for migrating is that these crates provide APIs for
setting the personalisation string. This enables us to depend solely on
published crates, and thus publish our own crates.

The SIMD implementations are ported from libsodium.

Closes #67.
This commit is contained in:
Jack Grigg
2019-06-04 13:15:12 +01:00
parent 91c6b0b3f0
commit 999dcbfcab
20 changed files with 172 additions and 129 deletions
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14
zcash_primitives/src/zip32.rs
View File

@@ -1,5 +1,5 @@
use aes::Aes256;
use blake2_rfc::blake2b::Blake2b;
use blake2b_simd::Params as Blake2bParams;
use byteorder::{ByteOrder, LittleEndian, ReadBytesExt, WriteBytesExt};
use ff::Field;
use fpe::ff1::{BinaryNumeralString, FF1};
@@ -33,7 +33,10 @@ struct FVKFingerprint([u8; 32]);
impl<E: JubjubEngine> From<&FullViewingKey<E>> for FVKFingerprint {
fn from(fvk: &FullViewingKey<E>) -> Self {
let mut h = Blake2b::with_params(32, &[], &[], ZIP32_SAPLING_FVFP_PERSONALIZATION);
let mut h = Blake2bParams::new()
.hash_length(32)
.personal(ZIP32_SAPLING_FVFP_PERSONALIZATION)
.to_state();
h.update(&fvk.to_bytes());
let mut fvfp = [0u8; 32];
fvfp.copy_from_slice(h.finalize().as_bytes());
@@ -225,9 +228,10 @@ impl std::fmt::Debug for ExtendedFullViewingKey {
impl ExtendedSpendingKey {
pub fn master(seed: &[u8]) -> Self {
let mut h = Blake2b::with_params(64, &[], &[], ZIP32_SAPLING_MASTER_PERSONALIZATION);
h.update(seed);
let i = h.finalize();
let i = Blake2bParams::new()
.hash_length(64)
.personal(ZIP32_SAPLING_MASTER_PERSONALIZATION)
.hash(seed);
let sk_m = &i.as_bytes()[..32];
let mut c_m = [0u8; 32];