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Remove deprecated APIs from dalek-ff-group

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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.
This commit is contained in:
Luke Parker
2025-09-03 06:49:44 -04:00
parent 41c34d7f11
commit 215e41fdb6
9 changed files with 141 additions and 61 deletions
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3
crypto/dalek-ff-group/Cargo.toml
View File

@@ -28,7 +28,6 @@ sha2 = { version = "0.11.0-rc.0", default-features = false }
prime-field = { path = "../prime-field", default-features = false }
ciphersuite = { version = "0.4.2", path = "../ciphersuite", default-features = false }
crypto-bigint-05 = { package = "crypto-bigint", version = "0.5", default-features = false, features = ["zeroize"] }
crypto-bigint = { version = "0.6", default-features = false, features = ["zeroize"] }
curve25519-dalek = { version = ">= 4.0, < 4.2", default-features = false, features = ["zeroize", "digest", "group", "precomputed-tables"] }
@@ -39,6 +38,6 @@ rand_core = { version = "0.6", default-features = false, features = ["std"] }
ff-group-tests = { path = "../ff-group-tests" }
[features]
alloc = ["zeroize/alloc", "digest/alloc", "prime-field/alloc", "ciphersuite/alloc", "curve25519-dalek/alloc"]
alloc = ["zeroize/alloc", "digest/alloc", "prime-field/alloc", "ciphersuite/alloc", "crypto-bigint/alloc", "curve25519-dalek/alloc"]
std = ["alloc", "zeroize/std", "subtle/std", "rand_core/std", "digest/std", "prime-field/std", "ciphersuite/std"]
default = ["std"]

28
crypto/dalek-ff-group/src/lib.rs
View File

@@ -494,31 +494,3 @@ prime_field::odd_prime_field_with_specific_repr!(
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 ::ciphersuite::group::ff::FromUniformBytes<_>>::from_uniform_bytes(&value)
}
}