mirror of
https://github.com/serai-dex/serai.git
synced 2025-12-08 12:19:24 +00:00
215e41fdb6
For backwards compatibility, we now use as a patch (as prior done with `ciphersuite`). Removes `crypto-bigint 0.5` from the tree and shapes up what the next release will look like.
45 lines
1.5 KiB
Rust
45 lines
1.5 KiB
Rust
#![allow(deprecated)]
|
|
#![cfg_attr(docsrs, feature(doc_auto_cfg))]
|
|
#![no_std] // Prevents writing new code, in what should be a simple wrapper, which requires std
|
|
#![doc = include_str!("../README.md")]
|
|
#![allow(clippy::redundant_closure_call)]
|
|
|
|
pub use dalek_ff_group::{Scalar, EdwardsPoint, RistrettoPoint, Ed25519, Ristretto};
|
|
|
|
type ThirtyTwoArray = [u8; 32];
|
|
prime_field::odd_prime_field_with_specific_repr!(
|
|
FieldElement,
|
|
"0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffed",
|
|
"02",
|
|
false,
|
|
crate::ThirtyTwoArray
|
|
);
|
|
|
|
impl FieldElement {
|
|
/// Create a FieldElement from a `crypto_bigint::U256`.
|
|
///
|
|
/// This will reduce the `U256` by the modulus, into a member of the field.
|
|
#[deprecated]
|
|
pub const fn from_u256(u256: &crypto_bigint_05::U256) -> Self {
|
|
const MODULUS: crypto_bigint::U256 = crypto_bigint::U256::from_be_hex(
|
|
"7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffed",
|
|
);
|
|
let mut u256 = crypto_bigint::U256::from_words(*u256.as_words());
|
|
loop {
|
|
let result = FieldElement::from_bytes(&u256.to_le_bytes());
|
|
if let Some(result) = result {
|
|
return result;
|
|
}
|
|
u256 = u256.wrapping_sub(&MODULUS);
|
|
}
|
|
}
|
|
|
|
/// Create a `FieldElement` from the reduction of a 512-bit number.
|
|
///
|
|
/// The bytes are interpreted in little-endian format.
|
|
#[deprecated]
|
|
pub fn wide_reduce(value: [u8; 64]) -> Self {
|
|
<FieldElement as prime_field::ff::FromUniformBytes<_>>::from_uniform_bytes(&value)
|
|
}
|
|
}
|