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librustzcash
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Switch to little endian encoding for everything.

This commit is contained in:
Sean Bowe 2018-05-17 01:22:15 -06:00
parent a64c850e6d
commit d14b12aae4
3 changed files with 17 additions and 29 deletions
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16
Cargo.lock generated
View File

@ -17,7 +17,7 @@ dependencies = [
"futures 0.1.21 (registry+https://github.com/rust-lang/crates.io-index)",
"futures-cpupool 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
"num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
"pairing 0.14.1 (registry+https://github.com/rust-lang/crates.io-index)",
"pairing 0.14.2 (registry+https://github.com/rust-lang/crates.io-index)",
"rand 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
]
@ -118,9 +118,9 @@ dependencies = [
"byteorder 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
"lazy_static 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.40 (registry+https://github.com/rust-lang/crates.io-index)",
"pairing 0.14.1 (registry+https://github.com/rust-lang/crates.io-index)",
"pairing 0.14.2 (registry+https://github.com/rust-lang/crates.io-index)",
"rand 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
"sapling-crypto 0.0.1 (git+https://github.com/zcash-hackworks/sapling-crypto?rev=7beeb52730e24724ee10ea2458ecf7776cb59c58)",
"sapling-crypto 0.0.1 (git+https://github.com/zcash-hackworks/sapling-crypto?rev=eb409fa3cf8df215ae8d35f5e385751a0c5ffb85)",
]
[[package]]
@ -138,7 +138,7 @@ dependencies = [
[[package]]
name = "pairing"
version = "0.14.1"
version = "0.14.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"byteorder 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
@ -158,13 +158,13 @@ dependencies = [
[[package]]
name = "sapling-crypto"
version = "0.0.1"
source = "git+https://github.com/zcash-hackworks/sapling-crypto?rev=7beeb52730e24724ee10ea2458ecf7776cb59c58#7beeb52730e24724ee10ea2458ecf7776cb59c58"
source = "git+https://github.com/zcash-hackworks/sapling-crypto?rev=eb409fa3cf8df215ae8d35f5e385751a0c5ffb85#eb409fa3cf8df215ae8d35f5e385751a0c5ffb85"
dependencies = [
"bellman 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
"blake2-rfc 0.2.18 (git+https://github.com/gtank/blake2-rfc?rev=7a5b5fc99ae483a0043db7547fb79a6fa44b88a9)",
"byteorder 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
"digest 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
"pairing 0.14.1 (registry+https://github.com/rust-lang/crates.io-index)",
"pairing 0.14.2 (registry+https://github.com/rust-lang/crates.io-index)",
"rand 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
]
@ -211,9 +211,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
"checksum libc 0.2.40 (registry+https://github.com/rust-lang/crates.io-index)" = "6fd41f331ac7c5b8ac259b8bf82c75c0fb2e469bbf37d2becbba9a6a2221965b"
"checksum nodrop 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)" = "9a2228dca57108069a5262f2ed8bd2e82496d2e074a06d1ccc7ce1687b6ae0a2"
"checksum num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c51a3322e4bca9d212ad9a158a02abc6934d005490c054a2778df73a70aa0a30"
"checksum pairing 0.14.1 (registry+https://github.com/rust-lang/crates.io-index)" = "06f21a403a78257de696b59a5bfafad56a3b3ab8f27741c8122750bf0ebbb9fa"
"checksum pairing 0.14.2 (registry+https://github.com/rust-lang/crates.io-index)" = "ceda21136251c6d5a422d3d798d8ac22515a6e8d3521bb60c59a8349d36d0d57"
"checksum rand 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "eba5f8cb59cc50ed56be8880a5c7b496bfd9bd26394e176bc67884094145c2c5"
"checksum sapling-crypto 0.0.1 (git+https://github.com/zcash-hackworks/sapling-crypto?rev=7beeb52730e24724ee10ea2458ecf7776cb59c58)" = "<none>"
"checksum sapling-crypto 0.0.1 (git+https://github.com/zcash-hackworks/sapling-crypto?rev=eb409fa3cf8df215ae8d35f5e385751a0c5ffb85)" = "<none>"
"checksum typenum 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)" = "612d636f949607bdf9b123b4a6f6d966dedf3ff669f7f045890d3a4a73948169"
"checksum winapi 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "04e3bd221fcbe8a271359c04f21a76db7d0c6028862d1bb5512d85e1e2eb5bb3"
"checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"

5
Cargo.toml
View File

@ -10,7 +10,7 @@ crate-type = ["staticlib"]
[dependencies]
libc = "0.2"
pairing = "0.14.1"
pairing = "0.14.2"
lazy_static = "1"
bellman = "0.1"
byteorder = "1"
@ -18,8 +18,9 @@ rand = "0.4"
[dependencies.sapling-crypto]
git = "https://github.com/zcash-hackworks/sapling-crypto"
rev = "7beeb52730e24724ee10ea2458ecf7776cb59c58"
rev = "eb409fa3cf8df215ae8d35f5e385751a0c5ffb85"
[profile.release]
lto = true
panic = 'abort'
codegen-units = 1

25
src/rustzcash.rs
View File

@ -13,8 +13,7 @@ use pairing::{BitIterator, Field, PrimeField, PrimeFieldRepr, bls12_381::{Bls12,
use sapling_crypto::{circuit::multipack,
jubjub::{edwards, FixedGenerators, JubjubBls12, JubjubParams, Unknown,
fs::FsRepr},
pedersen_hash::{pedersen_hash, Personalization},
redjubjub::{self, Signature}, util::swap_bits_u64};
pedersen_hash::{pedersen_hash, Personalization}, redjubjub::{self, Signature}};
use sapling_crypto::circuit::sprout::{self, TREE_DEPTH as SPROUT_TREE_DEPTH};
@ -42,22 +41,15 @@ static mut SAPLING_SPEND_PARAMS: Option<Parameters<Bls12>> = None;
static mut SAPLING_OUTPUT_PARAMS: Option<Parameters<Bls12>> = None;
static mut SPROUT_GROTH16_PARAMS_PATH: Option<String> = None;
fn is_small_order<Order>(
p: &edwards::Point<Bls12, Order>
) -> bool {
fn is_small_order<Order>(p: &edwards::Point<Bls12, Order>) -> bool {
p.double(&JUBJUB).double(&JUBJUB).double(&JUBJUB) == edwards::Point::zero()
}
/// Writes an FrRepr to [u8] of length 32
fn write_le(mut f: FrRepr, to: &mut [u8]) {
fn write_le(f: FrRepr, to: &mut [u8]) {
assert_eq!(to.len(), 32);
f.as_mut().reverse();
for b in f.as_mut() {
*b = swap_bits_u64(*b);
}
f.write_be(to).expect("length is 32 bytes");
f.write_le(to).expect("length is 32 bytes");
}
/// Reads an FrRepr from a [u8] of length 32.
@ -67,12 +59,7 @@ fn read_le(from: &[u8]) -> FrRepr {
assert_eq!(from.len(), 32);
let mut f = FrRepr::default();
f.read_be(from).expect("length is 32 bytes");
f.as_mut().reverse();
for b in f.as_mut() {
*b = swap_bits_u64(*b);
}
f.read_le(from).expect("length is 32 bytes");
f
}
@ -319,7 +306,7 @@ pub extern "system" fn librustzcash_sapling_check_spend(
// Add the nullifier through multiscalar packing
{
let nullifier = multipack::bytes_to_bits(nullifier);
let nullifier = multipack::bytes_to_bits_le(nullifier);
let nullifier = multipack::compute_multipacking::<Bls12>(&nullifier);
assert_eq!(nullifier.len(), 2);