chore: bump to v1.0.0-pre.1 and mostly cleanup stuff

CHANGELOG.md

@@ -1,5 +1,10 @@
 # Changelog
 
+## 1.0.0-pre.1 (July 2, 2026)
+
+* Simplified ciphersuite trait
+* Moved multiplication operator to SecurityLevel type in Group trait
+
 ## 1.0.0-pre.0 (June 29, 2026)
 
 Forked from [facebook/voprf](https://github.com/facebook/voprf/) at `0.6.0-pre.1`.

Cargo.toml

@@ -9,7 +9,7 @@ name = "voprf-vx"
 readme = "README.md"
 repository = "https://github.com/vexahub/voprf-vx/"
 rust-version = "1.87"
-version = "1.0.0-pre.0"
+version = "1.0.0-pre.1"
 
 [features]
 alloc = []

src/ciphersuite.rs

@@ -9,7 +9,6 @@
 //! Defines the CipherSuite trait to specify the underlying primitives for VOPRF
 
 use crate::Group;
-use core::ops::Mul;
 use digest::block_api::BlockSizeUser;
 use digest::typenum::{IsLess, IsLessOrEqual, U256};
 use digest::{FixedOutput, HashMarker, OutputSizeUser};
@@ -20,7 +19,6 @@ use hybrid_array::typenum::{IsGreaterOrEqual, Prod, True, U2};
 /// Configures the underlying primitives used in VOPRF
 pub trait CipherSuite
 where
-    <Self::Group as Group>::SecurityLevel: Mul<U2>,
     <Self::Hash as OutputSizeUser>::OutputSize: ArraySize
         + IsLess<U256>
         + IsLessOrEqual<<Self::Hash as BlockSizeUser>::BlockSize, Output = True>
@@ -46,7 +44,6 @@ type OprfHash<T> =
 impl<T: OprfParameters> CipherSuite for T
 where
     T: Group,
-    <T as Group>::SecurityLevel: Mul<U2>,
     OprfHash<T>: BlockSizeUser + Default + FixedOutput + HashMarker,
     <OprfHash<T> as OutputSizeUser>::OutputSize: ArraySize
         + IsLess<U256>

src/group/elliptic_curve.rs

@@ -67,9 +67,9 @@ where
     fn hash_to_scalar<H>(input: &[&[u8]], dst: &[&[u8]]) -> Result<Self::Scalar, InternalError>
     where
         H: BlockSizeUser + Default + FixedOutput + HashMarker,
-        H::OutputSize: IsLess<U256> + IsLessOrEqual<H::BlockSize, Output = True>,
-        C::SecurityLevel: Mul<U2>,
-        H::OutputSize: IsGreaterOrEqual<Prod<C::SecurityLevel, U2>, Output = True>,
+        H::OutputSize: IsLess<U256>
+            + IsLessOrEqual<H::BlockSize, Output = True>
+            + IsGreaterOrEqual<Prod<C::SecurityLevel, U2>, Output = True>,
     {
         hash_to_scalar::<C, ExpandMsgXmd<H>, <C as MapToCurve>::Length>(input, dst)
             .map_err(|_| InternalError::Input)

src/group/mod.rs

@@ -64,7 +64,7 @@ where
     /// Used to enforce `H::OutputSize >= 2 * SecurityLevel` in
     /// `hash_to_curve` and `hash_to_scalar`, which corresponds to the
     /// `expand_message` requirement `len_in_bytes = 2 * k / 8`.
-    type SecurityLevel: ArraySize;
+    type SecurityLevel: ArraySize + Mul<U2>;
 
     /// Transforms a password and domain separation tag (DST) into a curve point
     ///
@@ -74,9 +74,9 @@ where
     fn hash_to_curve<H>(input: &[&[u8]], dst: &[&[u8]]) -> Result<Self::Elem, InternalError>
     where
         H: BlockSizeUser + Default + FixedOutput + HashMarker,
-        H::OutputSize: IsLess<U256> + IsLessOrEqual<H::BlockSize, Output = True>,
-        Self::SecurityLevel: Mul<U2>,
-        H::OutputSize: IsGreaterOrEqual<Prod<Self::SecurityLevel, U2>, Output = True>;
+        H::OutputSize: IsLess<U256>
+            + IsLessOrEqual<H::BlockSize, Output = True>
+            + IsGreaterOrEqual<Prod<Self::SecurityLevel, U2>, Output = True>;
 
     /// Hashes a slice of pseudo-random bytes to a scalar
     ///
@@ -86,9 +86,9 @@ where
     fn hash_to_scalar<H>(input: &[&[u8]], dst: &[&[u8]]) -> Result<Self::Scalar, InternalError>
     where
         H: BlockSizeUser + Default + FixedOutput + HashMarker,
-        H::OutputSize: IsLess<U256> + IsLessOrEqual<H::BlockSize, Output = True>,
-        Self::SecurityLevel: Mul<U2>,
-        H::OutputSize: IsGreaterOrEqual<Prod<Self::SecurityLevel, U2>, Output = True>;
+        H::OutputSize: IsLess<U256>
+            + IsLessOrEqual<H::BlockSize, Output = True>
+            + IsGreaterOrEqual<Prod<Self::SecurityLevel, U2>, Output = True>;
 
     /// Get the base point for the group
     fn base_elem() -> Self::Elem;

src/group/ristretto.rs

@@ -7,7 +7,7 @@
 // licenses.
 
 use core::num::NonZeroU16;
-use core::ops::Mul;
+
 use curve25519_dalek::constants::RISTRETTO_BASEPOINT_POINT;
 use curve25519_dalek::ristretto::{CompressedRistretto, RistrettoPoint};
 use curve25519_dalek::scalar::Scalar;
@@ -54,9 +54,9 @@ impl Group for Ristretto255 {
     fn hash_to_curve<H>(input: &[&[u8]], dst: &[&[u8]]) -> Result<Self::Elem, InternalError>
     where
         H: BlockSizeUser + Default + FixedOutput + HashMarker,
-        H::OutputSize: IsLess<U256> + IsLessOrEqual<H::BlockSize, Output = True>,
-        Self::SecurityLevel: Mul<U2>,
-        H::OutputSize: IsGreaterOrEqual<Prod<Self::SecurityLevel, U2>, Output = True>,
+        H::OutputSize: IsLess<U256>
+            + IsLessOrEqual<H::BlockSize, Output = True>
+            + IsGreaterOrEqual<Prod<Self::SecurityLevel, U2>, Output = True>,
     {
         let mut uniform_bytes = [0u8; 64];
 
@@ -77,9 +77,9 @@ impl Group for Ristretto255 {
     fn hash_to_scalar<H>(input: &[&[u8]], dst: &[&[u8]]) -> Result<Self::Scalar, InternalError>
     where
         H: BlockSizeUser + Default + FixedOutput + HashMarker,
-        H::OutputSize: IsLess<U256> + IsLessOrEqual<H::BlockSize, Output = True>,
-        Self::SecurityLevel: Mul<U2>,
-        H::OutputSize: IsGreaterOrEqual<Prod<Self::SecurityLevel, U2>, Output = True>,
+        H::OutputSize: IsLess<U256>
+            + IsLessOrEqual<H::BlockSize, Output = True>
+            + IsGreaterOrEqual<Prod<Self::SecurityLevel, U2>, Output = True>,
     {
         let mut uniform_bytes = [0u8; 64];