dhkem: rename arithmetic feature to ecdh

dhkem/Cargo.toml

@@ -1,7 +1,8 @@
 [package]
 name = "dhkem"
 description = """
-Key Encapsulation Mechanism (KEM) adapters for Elliptic Curve Diffie Hellman (ECDH) protocols
+Pure Rust implementation of Key Encapsulation Mechanism (KEM) adapters for Elliptic Curve
+Diffie Hellman (ECDH) protocols
 """
 version = "0.1.0"
 edition = "2021"
@@ -15,6 +16,8 @@ readme = "README.md"
 [dependencies]
 kem = "0.3.0-pre.0"
 rand_core = "0.6.4"
+
+# optional dependencies
 x25519 = { version = "2.0.1", package = "x25519-dalek", optional = true, default-features = false }
 elliptic-curve = { version = "0.13.8", optional = true, default-features = false }
 bign256 = { version = "0.13.1", optional = true, default-features = false, features = ["arithmetic"] }
@@ -29,16 +32,16 @@ zeroize = { version = "1.8.1", optional = true, default-features = false }
 
 [features]
 default = ["zeroize"]
-arithmetic = ["dep:elliptic-curve", "elliptic-curve/ecdh"]
+ecdh = ["dep:elliptic-curve", "elliptic-curve/ecdh"]
 x25519 = ["dep:x25519", "x25519/reusable_secrets"]
-bign256 = ["dep:bign256", "arithmetic"]
-k256 = ["dep:k256", "arithmetic"]
-p192 = ["dep:p192", "arithmetic"]
-p224 = ["dep:p224", "arithmetic"]
-p256 = ["dep:p256", "arithmetic"]
-p384 = ["dep:p384", "arithmetic"]
-p521 = ["dep:p521", "arithmetic"]
-sm2 = ["dep:sm2", "arithmetic"]
+bign256 = ["dep:bign256", "ecdh"]
+k256 = ["dep:k256", "ecdh"]
+p192 = ["dep:p192", "ecdh"]
+p224 = ["dep:p224", "ecdh"]
+p256 = ["dep:p256", "ecdh"]
+p384 = ["dep:p384", "ecdh"]
+p521 = ["dep:p521", "ecdh"]
+sm2 = ["dep:sm2", "ecdh"]
 zeroize = ["dep:zeroize"]
 
 [dev-dependencies]

dhkem/src/lib.rs

@@ -17,8 +17,8 @@
 //! draft of the [TLS KEM
 //! combiner](https://datatracker.ietf.org/doc/html/draft-ietf-tls-hybrid-design-10).
 
-#[cfg(feature = "arithmetic")]
-pub mod arithmetic;
+#[cfg(feature = "ecdh")]
+pub mod ecdh;
 
 #[cfg(feature = "x25519")]
 mod x25519_kem;
@@ -29,7 +29,7 @@ pub use x25519_kem::X25519;
 use kem::{Decapsulate, Encapsulate};
 use rand_core::CryptoRngCore;
 
-#[cfg(feature = "arithmetic")]
+#[cfg(feature = "ecdh")]
 use elliptic_curve::{
     sec1::{self, ToEncodedPoint},
     CurveArithmetic, PublicKey,
@@ -83,7 +83,7 @@ impl<X> DhDecapsulator<X> {
     }
 }
 
-#[cfg(feature = "arithmetic")]
+#[cfg(feature = "ecdh")]
 impl<C> ToEncodedPoint<C> for DhEncapsulator<PublicKey<C>>
 where
     C: CurveArithmetic,
@@ -140,21 +140,21 @@ pub trait DhKem {
 }
 
 #[cfg(feature = "bign256")]
-pub type BignP256 = arithmetic::ArithmeticKem<bign256::BignP256>;
+pub type BignP256 = ecdh::ArithmeticKem<bign256::BignP256>;
 #[cfg(feature = "k256")]
-pub type Secp256k1 = arithmetic::ArithmeticKem<k256::Secp256k1>;
+pub type Secp256k1 = ecdh::ArithmeticKem<k256::Secp256k1>;
 #[cfg(feature = "p192")]
-pub type NistP192 = arithmetic::ArithmeticKem<p192::NistP192>;
+pub type NistP192 = ecdh::ArithmeticKem<p192::NistP192>;
 #[cfg(feature = "p224")]
-pub type NistP224 = arithmetic::ArithmeticKem<p224::NistP224>;
+pub type NistP224 = ecdh::ArithmeticKem<p224::NistP224>;
 #[cfg(feature = "p256")]
-pub type NistP256 = arithmetic::ArithmeticKem<p256::NistP256>;
+pub type NistP256 = ecdh::ArithmeticKem<p256::NistP256>;
 // include an additional alias Secp256r1 = NistP256
 #[cfg(feature = "p256")]
-pub type Secp256r1 = arithmetic::ArithmeticKem<p256::NistP256>;
+pub type Secp256r1 = ecdh::ArithmeticKem<p256::NistP256>;
 #[cfg(feature = "p384")]
-pub type NistP384 = arithmetic::ArithmeticKem<p384::NistP384>;
+pub type NistP384 = ecdh::ArithmeticKem<p384::NistP384>;
 #[cfg(feature = "p521")]
-pub type NistP521 = arithmetic::ArithmeticKem<p521::NistP521>;
+pub type NistP521 = ecdh::ArithmeticKem<p521::NistP521>;
 #[cfg(feature = "sm2")]
-pub type Sm2 = arithmetic::ArithmeticKem<sm2::Sm2>;
+pub type Sm2 = ecdh::ArithmeticKem<sm2::Sm2>;

dhkem/tests/tests.rs

@@ -13,7 +13,7 @@ impl SecretBytes for x25519::SharedSecret {
     }
 }
 
-#[cfg(feature = "arithmetic")]
+#[cfg(feature = "ecdh")]
 impl<C> SecretBytes for elliptic_curve::ecdh::SharedSecret<C>
 where
     C: elliptic_curve::CurveArithmetic,