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Upgrade to work with latest ark-ff (#95)

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Co-authored-by: Sun <huachuang20@gmail.com>
This commit is contained in:
Pratyush Mishra
2022-03-07 13:12:03 -08:00
committed by GitHub
parent d0dc200f22
commit 1551d6d76c
231 changed files with 2830 additions and 4343 deletions
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108
bls12_377/src/fields/fr.rs
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@@ -1,5 +1,4 @@
//! Bls12-377 scalar field.
///
/// Roots of unity computed from modulus and R using this sage code:
///
/// ```ignore
@@ -19,105 +18,10 @@
/// print("Gen: ", into_chunks(g * R % q, 64, 4))
/// print("2-adic gen: ", into_chunks(g2 * R % q, 64, 4))
/// ```
use ark_ff::{
biginteger::{BigInt, BigInteger256 as BigInteger},
fields::*,
};
pub type Fr = Fp256<FrParameters>;
use ark_ff::fields::{Fp256, MontBackend, MontConfig};
pub struct FrParameters;
impl Fp256Parameters for FrParameters {}
impl FftParameters for FrParameters {
type BigInt = BigInteger;
const TWO_ADICITY: u32 = 47;
#[rustfmt::skip]
const TWO_ADIC_ROOT_OF_UNITY: BigInteger = BigInt::new([
12646347781564978760u64,
6783048705277173164u64,
268534165941069093u64,
1121515446318641358u64,
]);
}
impl FpParameters for FrParameters {
/// MODULUS = 8444461749428370424248824938781546531375899335154063827935233455917409239041
#[rustfmt::skip]
const MODULUS: BigInteger = BigInt::new([
725501752471715841u64,
6461107452199829505u64,
6968279316240510977u64,
1345280370688173398u64,
]);
const MODULUS_BITS: u32 = 253;
const CAPACITY: u32 = Self::MODULUS_BITS - 1;
const REPR_SHAVE_BITS: u32 = 3;
/// R = 6014086494747379908336260804527802945383293308637734276299549080986809532403
#[rustfmt::skip]
const R: BigInteger = BigInt::new([
9015221291577245683u64,
8239323489949974514u64,
1646089257421115374u64,
958099254763297437u64,
]);
#[rustfmt::skip]
const R2: BigInteger = BigInt::new([
2726216793283724667u64,
14712177743343147295u64,
12091039717619697043u64,
81024008013859129u64,
]);
const INV: u64 = 725501752471715839u64;
/// GENERATOR = 22
/// Encoded in Montgomery form, so the value is
/// (22 * R) % q =
/// 5642976643016801619665363617888466827793962762719196659561577942948671127251
#[rustfmt::skip]
const GENERATOR: BigInteger = BigInt::new([
2984901390528151251u64,
10561528701063790279u64,
5476750214495080041u64,
898978044469942640u64,
]);
/// (r - 1)/2 =
/// 4222230874714185212124412469390773265687949667577031913967616727958704619520
#[rustfmt::skip]
const MODULUS_MINUS_ONE_DIV_TWO: BigInteger = BigInt::new([
0x8508c00000000000,
0xacd53b7f68000000,
0x305a268f2e1bd800,
0x955b2af4d1652ab,
]);
// T and T_MINUS_ONE_DIV_TWO, where r - 1 = 2^s * t
// For T coprime to 2
/// t = (r - 1) / 2^s =
/// 60001509534603559531609739528203892656505753216962260608619555
#[rustfmt::skip]
const T: BigInteger = BigInt::new([
0xedfda00000021423,
0x9a3cb86f6002b354,
0xcabd34594aacc168,
0x2556,
]);
/// (t - 1) / 2 =
/// 30000754767301779765804869764101946328252876608481130304309777
#[rustfmt::skip]
const T_MINUS_ONE_DIV_TWO: BigInteger = BigInt::new([
0x76fed00000010a11,
0x4d1e5c37b00159aa,
0x655e9a2ca55660b4,
0x12ab,
]);
}
#[derive(MontConfig)]
#[modulus = "8444461749428370424248824938781546531375899335154063827935233455917409239041"]
#[generator = "22"]
pub struct FrConfig;
pub type Fr = Fp256<MontBackend<FrConfig, 4>>;