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Migrate to ff 0.4

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This commit is contained in:
Jack Grigg
2018-07-03 09:05:12 +01:00
parent 4752a91781
commit c5b883f91e
4 changed files with 8 additions and 17 deletions
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3
Cargo.toml
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@@ -17,10 +17,9 @@ repository = "https://github.com/ebfull/pairing"
[dependencies] [dependencies]
rand = "0.4" rand = "0.4"
byteorder = "1" byteorder = "1"
ff = "0.3" ff = { version = "0.4", features = ["derive"] }
[features] [features]
unstable-features = ["expose-arith"] unstable-features = ["expose-arith"]
expose-arith = [] expose-arith = []
u128-support = ["ff/u128-support"]
default = [] default = []

8
README.md
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@@ -6,14 +6,6 @@ This is a Rust crate for using pairing-friendly elliptic curves. Currently, only
Bring the `pairing` crate into your project just as you normally would. Bring the `pairing` crate into your project just as you normally would.
If you're using a supported platform and the nightly Rust compiler, you can enable the `u128-support` feature for faster arithmetic.
```toml
[dependencies.pairing]
version = "0.14"
features = ["u128-support"]
```
## Security Warnings ## Security Warnings
This library does not make any guarantees about constant-time operations, memory access patterns, or resistance to side-channel attacks. This library does not make any guarantees about constant-time operations, memory access patterns, or resistance to side-channel attacks.

7
src/bls12_381/mod.rs
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@@ -20,7 +20,7 @@ pub use self::fr::{Fr, FrRepr};
use super::{CurveAffine, Engine}; use super::{CurveAffine, Engine};
use ff::{BitIterator, Field}; use ff::{BitIterator, Field, ScalarEngine};
// The BLS parameter x for BLS12-381 is -0xd201000000010000 // The BLS parameter x for BLS12-381 is -0xd201000000010000
const BLS_X: u64 = 0xd201000000010000; const BLS_X: u64 = 0xd201000000010000;
@@ -29,8 +29,11 @@ const BLS_X_IS_NEGATIVE: bool = true;
#[derive(Clone, Debug)] #[derive(Clone, Debug)]
pub struct Bls12; pub struct Bls12;
impl Engine for Bls12 { impl ScalarEngine for Bls12 {
type Fr = Fr; type Fr = Fr;
}
impl Engine for Bls12 {
type G1 = G1; type G1 = G1;
type G1Affine = G1Affine; type G1Affine = G1Affine;
type G2 = G2; type G2 = G2;

7
src/lib.rs
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@@ -25,17 +25,14 @@ pub mod bls12_381;
mod wnaf; mod wnaf;
pub use self::wnaf::Wnaf; pub use self::wnaf::Wnaf;
use ff::{Field, PrimeField, PrimeFieldDecodingError, PrimeFieldRepr, SqrtField}; use ff::{Field, PrimeField, PrimeFieldDecodingError, PrimeFieldRepr, ScalarEngine, SqrtField};
use std::error::Error; use std::error::Error;
use std::fmt; use std::fmt;
/// An "engine" is a collection of types (fields, elliptic curve groups, etc.) /// An "engine" is a collection of types (fields, elliptic curve groups, etc.)
/// with well-defined relationships. In particular, the G1/G2 curve groups are /// with well-defined relationships. In particular, the G1/G2 curve groups are
/// of prime order `r`, and are equipped with a bilinear pairing function. /// of prime order `r`, and are equipped with a bilinear pairing function.
pub trait Engine: Sized + 'static + Clone { pub trait Engine: ScalarEngine {
/// This is the scalar field of the G1/G2 groups.
type Fr: PrimeField + SqrtField;
/// The projective representation of an element in G1. /// The projective representation of an element in G1.
type G1: CurveProjective< type G1: CurveProjective<
Engine = Self, Engine = Self,