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vxrenovateandbreakingbread 8d462be1f7 chore(deps): update rust crate p521 to v0.14.0 (#13)
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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [p521](https://github.com/RustCrypto/elliptic-curves/tree/master/p521) ([source](https://github.com/RustCrypto/elliptic-curves)) | dev-dependencies | patch | `0.14.0-rc.15` → `0.14.0` |

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This PR has been generated by [Mend Renovate](https://github.com/renovatebot/renovate).
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---------

Co-authored-by: UneBaguette <[email protected]>
Reviewed-on: #13
Co-authored-by: Renovate Bot <[email protected]>
Co-committed-by: Renovate Bot <[email protected]>
2026-07-10 15:39:48 +02:00
breakingbread 201fb57d9f release: 1.0.0 (#12)
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- Deduplicate serialization with impl_serde_scalar, impl_serde_elem, and impl_serde_scalar_elem macros
- Move finalize_after_unblind to common.rs, shared by OPRF and VOPRF
- Add shared test helpers (test_all_curves macro, prf function)
- Update dependencies to stable releases

Reviewed-on: #12
Co-authored-by: UneBaguette <[email protected]>
Co-committed-by: UneBaguette <[email protected]>
2026-07-08 23:43:11 +02:00
vxrenovateandbreakingbread ef59638de0 chore(deps): update rust deps (#11)
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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [curve25519-dalek](https://github.com/dalek-cryptography/curve25519-dalek) ([source](https://github.com/dalek-cryptography/curve25519-dalek/tree/HEAD/curve25519-dalek)) | dependencies | patch | `5.0.0-rc.1` → `5.0.0` |
| [p256](https://github.com/RustCrypto/elliptic-curves/tree/master/p256) ([source](https://github.com/RustCrypto/elliptic-curves)) | dev-dependencies | patch | `0.14.0-rc.15` → `0.14.0` |
| [p256](https://github.com/RustCrypto/elliptic-curves/tree/master/p256) ([source](https://github.com/RustCrypto/elliptic-curves)) | dependencies | patch | `0.14.0-rc.15` → `0.14.0` |
| [p384](https://github.com/RustCrypto/elliptic-curves/tree/master/p384) ([source](https://github.com/RustCrypto/elliptic-curves)) | dev-dependencies | patch | `0.14.0-rc.15` → `0.14.0` |

---

### Release Notes

<details>
<summary>dalek-cryptography/curve25519-dalek (curve25519-dalek)</summary>

### [`v5.0.0`](https://github.com/dalek-cryptography/curve25519-dalek/blob/HEAD/curve25519-dalek/CHANGELOG.md#500---2026-07-06)

##### Breaking Changes

- Update edition to 2024
- Update the MSRV from 1.60 to 1.85
- Remove `group-bits` feature due to soundness issues with underlying trait ([#&#8203;909](https://github.com/dalek-cryptography/curve25519-dalek/pull/909))
- Re-export `rand_core` ([#&#8203;908](https://github.com/dalek-cryptography/curve25519-dalek/pull/908))
- Rename `Scalar::batch_invert` -> `Scalar::invert_batch` for consistency. Also make it no-alloc. ([#&#8203;789](https://github.com/dalek-cryptography/curve25519-dalek/pull/789))
- Remove deprecated functions `FieldElement::as_bytes()` and `EdwardsPoint::nonspec_map_to_curve()` ([#&#8203;778](https://github.com/dalek-cryptography/curve25519-dalek/pull/778))
- Upgrade `rand_core` dependency to v0.10.0
- Upgrade `digest` and `sha2` deps

##### Other Changes

- Perf: Use maximum available NAF window size in `VartimePrecomputedStraus` ([#&#8203;848](https://github.com/dalek-cryptography/curve25519-dalek/pull/848))
- Perf: Skip checking 8 candidate points in `RistrettoPoint::lizard_decode` ([#&#8203;882](https://github.com/dalek-cryptography/curve25519-dalek/pull/882))
- Add Lizard bytes-to-point injection for Ristretto. Gated under `lizard` feature. ([#&#8203;826](https://github.com/dalek-cryptography/curve25519-dalek/pull/826))
- Add an allocating batch inversion called `Scalar::invert_batch_alloc` ([#&#8203;789](https://github.com/dalek-cryptography/curve25519-dalek/pull/789))
- Add `Scalar::div_by_2` ([#&#8203;805](https://github.com/dalek-cryptography/curve25519-dalek/pull/805))
- Add `EdwardsPoint::hash_to_curve` ([#&#8203;786](https://github.com/dalek-cryptography/curve25519-dalek/pull/786))
- Undeprecate `Scalar::from_bits()` ([#&#8203;780](https://github.com/dalek-cryptography/curve25519-dalek/pull/780))
- Use constant-time equality testing for compressed Ristretto and Edwards points, rather than autoderived equality

</details>

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Reviewed-on: #11
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breakingbread 313f1b66bb chore: commit Cargo.lock, update gitignore per current Cargo guidance
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# Generated by Cargo
# will have compiled files and executables
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# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
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# These are backup files generated by rustfmt
**/*.rs.bk
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# Changelog
## 1.0.0 (July 8, 2026)
* Deduplicated serialization with `impl_serde_scalar`, `impl_serde_elem`, and `impl_serde_scalar_elem` macros
* Moved `finalize_after_unblind` to `common.rs`, shared by OPRF and VOPRF
* Added shared test helpers (`test_all_curves` macro, `prf` function)
* Updated dependencies to stable releases
## 1.0.0-rc.1 (July 3, 2026)
* Reject trailing bytes in all `deserialize` methods
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checksum = "b7cbbc0a705a0fd05cc3676525980d2bf5a9bc4adac6d6475209a7887cf59d19"
dependencies = [
"zerocopy-derive",
]
[[package]]
name = "zerocopy-derive"
version = "0.8.54"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e2e817b7b52d0c7358d3246da9d69935ebb18116b2b102b4230dac079b4862f5"
dependencies = [
"proc-macro2",
"quote",
"syn 2.0.118",
]
[[package]]
name = "zeroize"
version = "1.9.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e13c156562582aa81c60cb29407084cdb54c4164760106ab78e6c5b0858cf64e"
[[package]]
name = "zmij"
version = "1.0.21"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b8848ee67ecc8aedbaf3e4122217aff892639231befc6a1b58d29fff4c2cabaa"
+6 -6
View File
@@ -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-rc.1"
version = "1.0.0"
[features]
alloc = []
@@ -22,7 +22,7 @@ serde = ["curve25519-dalek?/serde", "hybrid-array/serde", "dep:serde"]
std = ["alloc"]
[dependencies]
curve25519-dalek = { version = "5.0.0-rc.1", default-features = false, features = ["rand_core", "zeroize"], optional = true }
curve25519-dalek = { version = "5", default-features = false, features = ["rand_core", "zeroize"], optional = true }
derive-where = { version = "1", features = ["zeroize-on-drop"] }
digest = { version = "0.11", features = ["zeroize"] }
displaydoc = { version = "0.2", default-features = false }
@@ -36,21 +36,21 @@ serde = { version = "1", default-features = false, features = [
"derive",
], optional = true }
sha2 = { version = "0.11", default-features = false, features = ["zeroize"], optional = true }
p256 = { version = "0.14.0-rc.15", default-features = false, features = ["hash2curve", "oprf"], optional = true }
p256 = { version = "0.14", default-features = false, features = ["hash2curve", "oprf"], optional = true }
subtle = { version = "2.6", default-features = false }
zeroize = { version = "1.5", default-features = false }
[dev-dependencies]
hex = "0.4"
p256 = { version = "0.14.0-rc.15", default-features = false, features = [
p256 = { version = "0.14", default-features = false, features = [
"hash2curve",
"oprf",
] }
p384 = { version = "0.14.0-rc.15", default-features = false, features = [
p384 = { version = "0.14", default-features = false, features = [
"hash2curve",
"oprf",
] }
p521 = { version = "0.14.0-rc.15", default-features = false, features = [
p521 = { version = "0.14", default-features = false, features = [
"hash2curve",
"oprf",
] }
+1 -1
View File
@@ -16,7 +16,7 @@ Installation
Add the following line to the dependencies of your `Cargo.toml`:
```
voprf = { package = "voprf-vx", version = "1.0.0-rc.1" }
voprf-vx = "1.0.0"
```
### Minimum Supported Rust Version
+29 -1
View File
@@ -5,6 +5,7 @@
//! Common functionality between multiple OPRF modes.
use core::convert::TryFrom;
use core::iter::Map;
use core::ops::Add;
use derive_where::derive_where;
@@ -449,6 +450,33 @@ pub(crate) fn server_evaluate_hash_input<CS: CipherSuite>(
.finalize())
}
pub(crate) type FinalizeAfterUnblindResult<'a, C, I, IE> = Map<
IE,
fn((I, <<C as CipherSuite>::Group as Group>::Elem)) -> Result<Output<<C as CipherSuite>::Hash>>,
>;
/// Returned values can only fail with [`Error::Input`].
pub(crate) fn finalize_after_unblind<
'a,
CS: CipherSuite,
I: AsRef<[u8]>,
IE: 'a + Iterator<Item = (I, <CS::Group as Group>::Elem)>,
>(
inputs_and_unblinded_elements: IE,
) -> FinalizeAfterUnblindResult<'a, CS, I, IE> {
inputs_and_unblinded_elements.map(|(input, unblinded_element)| {
let elem_len = <CS::Group as Group>::ElemLen::U16.to_be_bytes();
Ok(CS::Hash::new()
.chain_update(i2osp_2(input.as_ref().len()).map_err(|_| Error::Input)?)
.chain_update(input.as_ref())
.chain_update(elem_len)
.chain_update(CS::Group::serialize_elem(unblinded_element))
.chain_update(STR_FINALIZE)
.finalize())
})
}
pub(crate) struct Dst<L: ArraySize> {
dst_1: Array<u8, L>,
dst_2: &'static [u8],
@@ -464,7 +492,7 @@ impl<L: ArraySize> Dst<L> {
// <https://www.rfc-editor.org/rfc/rfc9497#section-3.1>
let par_2 = ArrayN::<u8, 7>::from(STR_OPRF)
.concat(ArrayN::<u8, 1>::from([mode.to_u8()]))
.concat(ArrayN::<u8, 1>::from([b'-']));
.concat(ArrayN::<u8, 1>::from(*b"-"));
let dst_1 = par_1.concat(par_2);
let dst_2 = CS::ID;
+1 -1
View File
@@ -18,7 +18,7 @@ pub enum Error {
DeriveKeyPair,
/// Failure to deserialize bytes
Deserialization,
/// Batched items are more then [`u16::MAX`] or length don't match.
/// Batched items are more than [`u16::MAX`] or length don't match.
Batch,
/// In verifiable mode, occurs when the proof failed to verify
ProofVerification,
+21 -20
View File
@@ -54,16 +54,7 @@ impl Group for Ristretto255 {
+ IsLessOrEqual<H::BlockSize, Output = True>
+ IsGreaterOrEqual<Prod<Self::SecurityLevel, U2>, Output = True>,
{
let mut uniform_bytes = [0u8; 64];
<ExpandMsgXmd<H> as ExpandMsg<U16>>::expand_message(
input,
dst,
NonZeroU16::new(64).unwrap(),
)
.map_err(|_| InternalError::Input)?
.fill_bytes(&mut uniform_bytes)
.map_err(|_| InternalError::Input)?;
let uniform_bytes = expand_uniform_bytes::<H>(input, dst)?;
Ok(RistrettoPoint::from_uniform_bytes(&uniform_bytes))
}
@@ -77,16 +68,7 @@ impl Group for Ristretto255 {
+ IsLessOrEqual<H::BlockSize, Output = True>
+ IsGreaterOrEqual<Prod<Self::SecurityLevel, U2>, Output = True>,
{
let mut uniform_bytes = [0u8; 64];
<ExpandMsgXmd<H> as ExpandMsg<U16>>::expand_message(
input,
dst,
NonZeroU16::new(64).unwrap(),
)
.map_err(|_| InternalError::Input)?
.fill_bytes(&mut uniform_bytes)
.map_err(|_| InternalError::Input)?;
let uniform_bytes = expand_uniform_bytes::<H>(input, dst)?;
Ok(Scalar::from_bytes_mod_order_wide(&uniform_bytes))
}
@@ -150,3 +132,22 @@ impl Group for Ristretto255 {
.ok_or(Error::Deserialization)
}
}
// HELPERS
fn expand_uniform_bytes<H>(input: &[&[u8]], dst: &[&[u8]]) -> Result<[u8; 64], InternalError>
where
H: BlockSizeUser + Default + FixedOutput + HashMarker,
H::OutputSize: IsLess<U256>
+ IsLessOrEqual<H::BlockSize, Output = True>
+ IsGreaterOrEqual<Prod<U16, U2>, Output = True>,
{
let mut uniform_bytes = [0u8; 64];
<ExpandMsgXmd<H> as ExpandMsg<U16>>::expand_message(input, dst, NonZeroU16::new(64).unwrap())
.map_err(|_| InternalError::Input)?
.fill_bytes(&mut uniform_bytes)
.map_err(|_| InternalError::Input)?;
Ok(uniform_bytes)
}
+15 -103
View File
@@ -4,17 +4,16 @@
//! Contains the main OPRF API
use core::iter::{self, Map};
use core::iter::{self};
use derive_where::derive_where;
use digest::{Digest, Output};
use digest::Output;
use hybrid_array::Array;
use hybrid_array::typenum::Unsigned;
use rand_core::{TryCryptoRng, TryRng};
use crate::common::{
BlindedElement, EvaluationElement, Mode, STR_FINALIZE, derive_key_internal,
deterministic_blind_unchecked, hash_to_group, i2osp_2, server_evaluate_hash_input,
BlindedElement, EvaluationElement, Mode, derive_key_internal, deterministic_blind_unchecked,
finalize_after_unblind, hash_to_group, server_evaluate_hash_input,
};
#[cfg(feature = "serde")]
use crate::serialization::serde::Scalar;
@@ -120,7 +119,7 @@ impl<CS: CipherSuite> OprfClient<CS> {
) -> Result<Output<CS::Hash>> {
let unblinded_element = evaluation_element.0 * &CS::Group::invert_scalar(self.blind);
let mut outputs =
finalize_after_unblind::<CS, _, _>(iter::once((input, unblinded_element)), &[]);
finalize_after_unblind::<CS, _, _>(iter::once((input, unblinded_element)));
outputs.next().unwrap()
}
@@ -217,43 +216,6 @@ pub struct OprfClientBlindResult<CS: CipherSuite> {
pub message: BlindedElement<CS>,
}
/////////////////////
// Inner functions //
// =============== //
/////////////////////
type FinalizeAfterUnblindResult<'a, C, I, IE> = Map<
IE,
fn((I, <<C as CipherSuite>::Group as Group>::Elem)) -> Result<Output<<C as CipherSuite>::Hash>>,
>;
/// Returned values can only fail with [`Error::Input`].
fn finalize_after_unblind<
'a,
CS: CipherSuite,
I: AsRef<[u8]>,
IE: 'a + Iterator<Item = (I, <CS::Group as Group>::Elem)>,
>(
inputs_and_unblinded_elements: IE,
_unused: &'a [u8],
) -> FinalizeAfterUnblindResult<'a, CS, I, IE> {
inputs_and_unblinded_elements.map(|(input, unblinded_element)| {
let elem_len = <CS::Group as Group>::ElemLen::U16.to_be_bytes();
// hashInput = I2OSP(len(input), 2) || input ||
// I2OSP(len(unblindedElement), 2) || unblindedElement ||
// "Finalize"
// return Hash(hashInput)
Ok(CS::Hash::new()
.chain_update(i2osp_2(input.as_ref().len()).map_err(|_| Error::Input)?)
.chain_update(input.as_ref())
.chain_update(elem_len)
.chain_update(CS::Group::serialize_elem(unblinded_element))
.chain_update(STR_FINALIZE)
.finalize())
})
}
///////////
// Tests //
// ===== //
@@ -269,23 +231,7 @@ mod tests {
use super::*;
use crate::Group;
use crate::common::{Dst, STR_HASH_TO_GROUP};
fn prf<CS: CipherSuite>(
input: &[u8],
key: <CS::Group as Group>::Scalar,
info: &[u8],
mode: Mode,
) -> Output<CS::Hash> {
let dst = Dst::new::<CS, _>(STR_HASH_TO_GROUP, mode);
let point = CS::Group::hash_to_curve::<CS::Hash>(&[input], &dst.as_dst()).unwrap();
let res = point * &key;
finalize_after_unblind::<CS, _, _>(iter::once((input, res)), info)
.next()
.unwrap()
.unwrap()
}
use crate::tests::helpers::prf;
fn base_retrieval<CS: CipherSuite>() {
let input = b"input";
@@ -294,7 +240,7 @@ mod tests {
let server = OprfServer::<CS>::new(&mut rng).unwrap();
let message = server.blind_evaluate(&client_blind_result.message);
let client_finalize_result = client_blind_result.state.finalize(input, &message).unwrap();
let res2 = prf::<CS>(input, server.get_private_key(), &[], Mode::Oprf);
let res2 = prf::<CS>(input, server.get_private_key(), Mode::Oprf);
assert_eq!(client_finalize_result, res2);
}
@@ -310,7 +256,7 @@ mod tests {
let dst = Dst::new::<CS, _>(STR_HASH_TO_GROUP, Mode::Oprf);
let point = CS::Group::hash_to_curve::<CS::Hash>(&[&input], &dst.as_dst()).unwrap();
let res2 = finalize_after_unblind::<CS, _, _>(iter::once((input.as_ref(), point)), &[])
let res2 = finalize_after_unblind::<CS, _, _>(iter::once((input.as_ref(), point)))
.next()
.unwrap()
.unwrap();
@@ -371,45 +317,11 @@ mod tests {
assert!(message.serialize().iter().all(|&x| x == 0));
}
#[test]
fn test_functionality() -> Result<()> {
use p256::NistP256;
use p384::NistP384;
use p521::NistP521;
#[cfg(feature = "ristretto255")]
{
use crate::Ristretto255;
base_retrieval::<Ristretto255>();
base_inversion_unsalted::<Ristretto255>();
server_evaluate::<Ristretto255>();
zeroize_oprf_client::<Ristretto255>();
zeroize_oprf_server::<Ristretto255>();
}
base_retrieval::<NistP256>();
base_inversion_unsalted::<NistP256>();
server_evaluate::<NistP256>();
zeroize_oprf_client::<NistP256>();
zeroize_oprf_server::<NistP256>();
base_retrieval::<NistP384>();
base_inversion_unsalted::<NistP384>();
server_evaluate::<NistP384>();
zeroize_oprf_client::<NistP384>();
zeroize_oprf_server::<NistP384>();
base_retrieval::<NistP521>();
base_inversion_unsalted::<NistP521>();
server_evaluate::<NistP521>();
zeroize_oprf_client::<NistP521>();
zeroize_oprf_server::<NistP521>();
Ok(())
}
crate::tests::test_all_curves!(
base_retrieval,
base_inversion_unsalted,
server_evaluate,
zeroize_oprf_client,
zeroize_oprf_server,
);
}
+7 -41
View File
@@ -873,45 +873,11 @@ mod tests {
assert!(proof.serialize().iter().all(|&x| x == 0));
}
#[test]
fn test_functionality() -> Result<()> {
use p256::NistP256;
use p384::NistP384;
use p521::NistP521;
#[cfg(feature = "ristretto255")]
{
use crate::Ristretto255;
verifiable_retrieval::<Ristretto255>();
verifiable_bad_public_key::<Ristretto255>();
verifiable_server_evaluate::<Ristretto255>();
zeroize_verifiable_client::<Ristretto255>();
zeroize_verifiable_server::<Ristretto255>();
}
verifiable_retrieval::<NistP256>();
verifiable_bad_public_key::<NistP256>();
verifiable_server_evaluate::<NistP256>();
zeroize_verifiable_client::<NistP256>();
zeroize_verifiable_server::<NistP256>();
verifiable_retrieval::<NistP384>();
verifiable_bad_public_key::<NistP384>();
verifiable_server_evaluate::<NistP384>();
zeroize_verifiable_client::<NistP384>();
zeroize_verifiable_server::<NistP384>();
verifiable_retrieval::<NistP521>();
verifiable_bad_public_key::<NistP521>();
verifiable_server_evaluate::<NistP521>();
zeroize_verifiable_client::<NistP521>();
zeroize_verifiable_server::<NistP521>();
Ok(())
}
crate::tests::test_all_curves!(
verifiable_retrieval,
verifiable_bad_public_key,
verifiable_server_evaluate,
zeroize_verifiable_client,
zeroize_verifiable_server,
);
}
+156 -249
View File
@@ -13,255 +13,10 @@ use crate::{
PoprfClient, PoprfServer, Proof, Result, VoprfClient, VoprfServer,
};
//////////////////////////////////////////////////////////
// Serialization and Deserialization for High-Level API //
// ==================================================== //
//////////////////////////////////////////////////////////
/// Length of [`OprfClient`] in bytes for serialization.
pub type OprfClientLen<CS> = <<CS as CipherSuite>::Group as Group>::ScalarLen;
impl<CS: CipherSuite> OprfClient<CS> {
/// Serialization into bytes
pub fn serialize(&self) -> Array<u8, OprfClientLen<CS>> {
CS::Group::serialize_scalar(self.blind)
}
/// Deserialization from bytes
///
/// # Errors
/// [`Error::Deserialization`] if failed to deserialize `input`.
pub fn deserialize(mut input: &[u8]) -> Result<Self> {
let blind = deserialize_scalar::<CS::Group>(&mut input)?;
if !input.is_empty() {
return Err(Error::Deserialization);
}
Ok(Self { blind })
}
}
/// Length of [`VoprfClient`] in bytes for serialization.
pub type VoprfClientLen<CS> = Sum<
<<CS as CipherSuite>::Group as Group>::ScalarLen,
<<CS as CipherSuite>::Group as Group>::ElemLen,
>;
impl<CS: CipherSuite> VoprfClient<CS> {
/// Serialization into bytes
pub fn serialize(&self) -> Array<u8, VoprfClientLen<CS>> {
<CS::Group as Group>::serialize_scalar(self.blind)
.concat(<CS::Group as Group>::serialize_elem(self.blinded_element))
}
/// Deserialization from bytes
///
/// # Errors
/// [`Error::Deserialization`] if failed to deserialize `input`.
pub fn deserialize(mut input: &[u8]) -> Result<Self> {
let blind = deserialize_scalar::<CS::Group>(&mut input)?;
let blinded_element = deserialize_elem::<CS::Group>(&mut input)?;
if !input.is_empty() {
return Err(Error::Deserialization);
}
Ok(Self {
blind,
blinded_element,
})
}
}
/// Length of [`PoprfClient`] in bytes for serialization.
pub type PoprfClientLen<CS> = Sum<
<<CS as CipherSuite>::Group as Group>::ScalarLen,
<<CS as CipherSuite>::Group as Group>::ElemLen,
>;
impl<CS: CipherSuite> PoprfClient<CS> {
/// Serialization into bytes
pub fn serialize(&self) -> Array<u8, PoprfClientLen<CS>> {
<CS::Group as Group>::serialize_scalar(self.blind)
.concat(<CS::Group as Group>::serialize_elem(self.blinded_element))
}
/// Deserialization from bytes
///
/// # Errors
/// [`Error::Deserialization`] if failed to deserialize `input`.
pub fn deserialize(mut input: &[u8]) -> Result<Self> {
let blind = deserialize_scalar::<CS::Group>(&mut input)?;
let blinded_element = deserialize_elem::<CS::Group>(&mut input)?;
if !input.is_empty() {
return Err(Error::Deserialization);
}
Ok(Self {
blind,
blinded_element,
})
}
}
/// Length of [`OprfServer`] in bytes for serialization.
pub type OprfServerLen<CS> = <<CS as CipherSuite>::Group as Group>::ScalarLen;
impl<CS: CipherSuite> OprfServer<CS> {
/// Serialization into bytes
pub fn serialize(&self) -> Array<u8, OprfServerLen<CS>> {
CS::Group::serialize_scalar(self.sk)
}
/// Deserialization from bytes
///
/// # Errors
/// [`Error::Deserialization`] if failed to deserialize `input`.
pub fn deserialize(mut input: &[u8]) -> Result<Self> {
let sk = deserialize_scalar::<CS::Group>(&mut input)?;
if !input.is_empty() {
return Err(Error::Deserialization);
}
Ok(Self { sk })
}
}
/// Length of [`VoprfServer`] in bytes for serialization.
pub type VoprfServerLen<CS> = Sum<
<<CS as CipherSuite>::Group as Group>::ScalarLen,
<<CS as CipherSuite>::Group as Group>::ElemLen,
>;
impl<CS: CipherSuite> VoprfServer<CS> {
/// Serialization into bytes
pub fn serialize(&self) -> Array<u8, VoprfServerLen<CS>> {
CS::Group::serialize_scalar(self.sk).concat(CS::Group::serialize_elem(self.pk))
}
/// Deserialization from bytes
///
/// # Errors
/// [`Error::Deserialization`] if failed to deserialize `input`.
pub fn deserialize(mut input: &[u8]) -> Result<Self> {
let sk = deserialize_scalar::<CS::Group>(&mut input)?;
let pk = deserialize_elem::<CS::Group>(&mut input)?;
if !input.is_empty() {
return Err(Error::Deserialization);
}
Ok(Self { sk, pk })
}
}
/// Length of [`PoprfServer`] in bytes for serialization.
pub type PoprfServerLen<CS> = Sum<
<<CS as CipherSuite>::Group as Group>::ScalarLen,
<<CS as CipherSuite>::Group as Group>::ElemLen,
>;
impl<CS: CipherSuite> PoprfServer<CS> {
/// Serialization into bytes
pub fn serialize(&self) -> Array<u8, PoprfServerLen<CS>> {
CS::Group::serialize_scalar(self.sk).concat(CS::Group::serialize_elem(self.pk))
}
/// Deserialization from bytes
///
/// # Errors
/// [`Error::Deserialization`] if failed to deserialize `input`.
pub fn deserialize(mut input: &[u8]) -> Result<Self> {
let sk = deserialize_scalar::<CS::Group>(&mut input)?;
let pk = deserialize_elem::<CS::Group>(&mut input)?;
if !input.is_empty() {
return Err(Error::Deserialization);
}
Ok(Self { sk, pk })
}
}
/// Length of [`Proof`] in bytes for serialization.
pub type ProofLen<CS> = Sum<
<<CS as CipherSuite>::Group as Group>::ScalarLen,
<<CS as CipherSuite>::Group as Group>::ScalarLen,
>;
impl<CS: CipherSuite> Proof<CS> {
/// Serialization into bytes
pub fn serialize(&self) -> Array<u8, ProofLen<CS>> {
CS::Group::serialize_scalar(self.c_scalar)
.concat(CS::Group::serialize_scalar(self.s_scalar))
}
/// Deserialization from bytes
///
/// # Errors
/// [`Error::Deserialization`] if failed to deserialize `input`.
pub fn deserialize(mut input: &[u8]) -> Result<Self> {
let c_scalar = deserialize_scalar::<CS::Group>(&mut input)?;
let s_scalar = deserialize_scalar::<CS::Group>(&mut input)?;
if !input.is_empty() {
return Err(Error::Deserialization);
}
Ok(Proof { c_scalar, s_scalar })
}
}
/// Length of [`BlindedElement`] in bytes for serialization.
pub type BlindedElementLen<CS> = <<CS as CipherSuite>::Group as Group>::ElemLen;
impl<CS: CipherSuite> BlindedElement<CS> {
/// Serialization into bytes
pub fn serialize(&self) -> Array<u8, BlindedElementLen<CS>> {
CS::Group::serialize_elem(self.0)
}
/// Deserialization from bytes
///
/// # Errors
/// [`Error::Deserialization`] if failed to deserialize `input`.
pub fn deserialize(mut input: &[u8]) -> Result<Self> {
let value = deserialize_elem::<CS::Group>(&mut input)?;
if !input.is_empty() {
return Err(Error::Deserialization);
}
Ok(Self(value))
}
}
/// Length of [`EvaluationElement`] in bytes for serialization.
pub type EvaluationElementLen<CS> = <<CS as CipherSuite>::Group as Group>::ElemLen;
impl<CS: CipherSuite> EvaluationElement<CS> {
/// Serialization into bytes
pub fn serialize(&self) -> Array<u8, EvaluationElementLen<CS>> {
CS::Group::serialize_elem(self.0)
}
/// Deserialization from bytes
///
/// # Errors
/// [`Error::Deserialization`] if failed to deserialize `input`.
pub fn deserialize(mut input: &[u8]) -> Result<Self> {
let value = deserialize_elem::<CS::Group>(&mut input)?;
if !input.is_empty() {
return Err(Error::Deserialization);
}
Ok(Self(value))
}
}
/////////////////////////////
// Deserialization Helpers //
// ======================= //
/////////////////////////////
fn deserialize_elem<G: Group>(input: &mut &[u8]) -> Result<G::Elem> {
let input = input
@@ -293,6 +48,158 @@ impl<T> SliceExt for [T] {
}
}
//////////////////////////////
// Serialization Macros //
// ======================== //
//////////////////////////////
macro_rules! impl_serde_scalar {
($ty:ident, $len:ident, $field:ident) => {
/// Length in bytes for serialization.
pub type $len<CS> = <<CS as CipherSuite>::Group as Group>::ScalarLen;
impl<CS: CipherSuite> $ty<CS> {
/// Serialization into bytes
pub fn serialize(&self) -> Array<u8, $len<CS>> {
CS::Group::serialize_scalar(self.$field)
}
/// Deserialization from bytes
///
/// # Errors
/// [`Error::Deserialization`] if failed to deserialize `input`.
pub fn deserialize(mut input: &[u8]) -> Result<Self> {
let $field = deserialize_scalar::<CS::Group>(&mut input)?;
if !input.is_empty() {
return Err(Error::Deserialization);
}
Ok(Self { $field })
}
}
};
}
macro_rules! impl_serde_scalar_elem {
($ty:ident, $len:ident, $scalar_field:ident, $elem_field:ident) => {
/// Length in bytes for serialization.
pub type $len<CS> = Sum<
<<CS as CipherSuite>::Group as Group>::ScalarLen,
<<CS as CipherSuite>::Group as Group>::ElemLen,
>;
impl<CS: CipherSuite> $ty<CS> {
/// Serialization into bytes
pub fn serialize(&self) -> Array<u8, $len<CS>> {
<CS::Group as Group>::serialize_scalar(self.$scalar_field)
.concat(<CS::Group as Group>::serialize_elem(self.$elem_field))
}
/// Deserialization from bytes
///
/// # Errors
/// [`Error::Deserialization`] if failed to deserialize `input`.
pub fn deserialize(mut input: &[u8]) -> Result<Self> {
let $scalar_field = deserialize_scalar::<CS::Group>(&mut input)?;
let $elem_field = deserialize_elem::<CS::Group>(&mut input)?;
if !input.is_empty() {
return Err(Error::Deserialization);
}
Ok(Self {
$scalar_field,
$elem_field,
})
}
}
};
}
macro_rules! impl_serde_elem {
($ty:ident, $len:ident) => {
/// Length in bytes for serialization.
pub type $len<CS> = <<CS as CipherSuite>::Group as Group>::ElemLen;
impl<CS: CipherSuite> $ty<CS> {
/// Serialization into bytes
pub fn serialize(&self) -> Array<u8, $len<CS>> {
CS::Group::serialize_elem(self.0)
}
/// Deserialization from bytes
///
/// # Errors
/// [`Error::Deserialization`] if failed to deserialize `input`.
pub fn deserialize(mut input: &[u8]) -> Result<Self> {
let value = deserialize_elem::<CS::Group>(&mut input)?;
if !input.is_empty() {
return Err(Error::Deserialization);
}
Ok(Self(value))
}
}
};
}
//////////////////////////////////////////////////////////
// Serialization and Deserialization for High-Level API //
// ==================================================== //
//////////////////////////////////////////////////////////
impl_serde_scalar!(OprfClient, OprfClientLen, blind);
impl_serde_scalar!(OprfServer, OprfServerLen, sk);
impl_serde_elem!(BlindedElement, BlindedElementLen);
impl_serde_elem!(EvaluationElement, EvaluationElementLen);
impl_serde_scalar_elem!(VoprfClient, VoprfClientLen, blind, blinded_element);
impl_serde_scalar_elem!(PoprfClient, PoprfClientLen, blind, blinded_element);
impl_serde_scalar_elem!(VoprfServer, VoprfServerLen, sk, pk);
impl_serde_scalar_elem!(PoprfServer, PoprfServerLen, sk, pk);
/////////////////////
// Proof (One-Off) //
// =============== //
/////////////////////
/// Length of [`Proof`] in bytes for serialization.
pub type ProofLen<CS> = Sum<
<<CS as CipherSuite>::Group as Group>::ScalarLen,
<<CS as CipherSuite>::Group as Group>::ScalarLen,
>;
impl<CS: CipherSuite> Proof<CS> {
/// Serialization into bytes
pub fn serialize(&self) -> Array<u8, ProofLen<CS>> {
CS::Group::serialize_scalar(self.c_scalar)
.concat(CS::Group::serialize_scalar(self.s_scalar))
}
/// Deserialization from bytes
///
/// # Errors
/// [`Error::Deserialization`] if failed to deserialize `input`.
pub fn deserialize(mut input: &[u8]) -> Result<Self> {
let c_scalar = deserialize_scalar::<CS::Group>(&mut input)?;
let s_scalar = deserialize_scalar::<CS::Group>(&mut input)?;
if !input.is_empty() {
return Err(Error::Deserialization);
}
Ok(Proof { c_scalar, s_scalar })
}
}
///////////////////////////
// Serde Support //
// ===================== //
///////////////////////////
#[cfg(feature = "serde")]
pub(crate) mod serde {
use core::marker::PhantomData;
+25
View File
@@ -0,0 +1,25 @@
// SPDX-License-Identifier: MIT OR Apache-2.0
// Copyright (c) VexaHub and contributors.
use core::iter;
use digest::Output;
use crate::common::{Dst, Mode, STR_HASH_TO_GROUP, finalize_after_unblind};
use crate::{CipherSuite, Group};
pub(crate) fn prf<CS: CipherSuite>(
input: &[u8],
key: <CS::Group as Group>::Scalar,
mode: Mode,
) -> Output<CS::Hash> {
let dst = Dst::new::<CS, _>(STR_HASH_TO_GROUP, mode);
let point = CS::Group::hash_to_curve::<CS::Hash>(&[input], &dst.as_dst()).unwrap();
let res = point * &key;
finalize_after_unblind::<CS, _, _>(iter::once((input, res)))
.next()
.unwrap()
.unwrap()
}
+20
View File
@@ -0,0 +1,20 @@
// SPDX-License-Identifier: MIT OR Apache-2.0
// Copyright (c) VexaHub and contributors.
macro_rules! test_all_curves {
($($test_fn:ident),+ $(,)?) => {
#[test]
fn test_functionality() -> $crate::Result<()> {
#[cfg(feature = "ristretto255")]
{
$( $test_fn::<$crate::Ristretto255>(); )+
}
$( $test_fn::<::p256::NistP256>(); )+
$( $test_fn::<::p384::NistP384>(); )+
$( $test_fn::<::p521::NistP521>(); )+
Ok(())
}
};
}
pub(crate) use test_all_curves;
+5
View File
@@ -3,6 +3,11 @@
// Copyright (c) Meta Platforms, Inc. and affiliates.
mod cfrg_vectors;
mod macros;
mod mock_rng;
mod parser;
mod test_cfrg_vectors;
pub(crate) mod helpers;
pub(crate) use macros::test_all_curves;
+15 -102
View File
@@ -9,15 +9,14 @@ use alloc::vec::Vec;
use core::iter::{self, Map, Repeat, Zip};
use derive_where::derive_where;
use digest::{Digest, Output};
use digest::Output;
use hybrid_array::Array;
use hybrid_array::typenum::Unsigned;
use rand_core::{TryCryptoRng, TryRng};
use crate::common::{
BlindedElement, EvaluationElement, Mode, PreparedEvaluationElement, Proof, STR_FINALIZE,
derive_keypair, deterministic_blind_unchecked, generate_proof, hash_to_group, i2osp_2,
server_evaluate_hash_input, verify_proof,
BlindedElement, EvaluationElement, FinalizeAfterUnblindResult, Mode, PreparedEvaluationElement,
Proof, derive_keypair, deterministic_blind_unchecked, finalize_after_unblind, generate_proof,
hash_to_group, server_evaluate_hash_input, verify_proof,
};
#[cfg(feature = "serde")]
use crate::serialization::serde::{Element, Scalar};
@@ -504,37 +503,6 @@ where
.map(|(blind, x)| x.0 * &CS::Group::invert_scalar(blind)))
}
type FinalizeAfterUnblindResult<'a, C, I, IE> = Map<
IE,
fn((I, <<C as CipherSuite>::Group as Group>::Elem)) -> Result<Output<<C as CipherSuite>::Hash>>,
>;
/// Returned values can only fail with [`Error::Input`].
fn finalize_after_unblind<
'a,
CS: CipherSuite,
I: AsRef<[u8]>,
IE: 'a + Iterator<Item = (I, <CS::Group as Group>::Elem)>,
>(
inputs_and_unblinded_elements: IE,
) -> FinalizeAfterUnblindResult<'a, CS, I, IE> {
inputs_and_unblinded_elements.map(|(input, unblinded_element)| {
let elem_len = <CS::Group as Group>::ElemLen::U16.to_be_bytes();
// hashInput = I2OSP(len(input), 2) || input ||
// I2OSP(len(unblindedElement), 2) || unblindedElement ||
// "Finalize"
// return Hash(hashInput)
Ok(CS::Hash::new()
.chain_update(i2osp_2(input.as_ref().len()).map_err(|_| Error::Input)?)
.chain_update(input.as_ref())
.chain_update(elem_len)
.chain_update(CS::Group::serialize_elem(unblinded_element))
.chain_update(STR_FINALIZE)
.finalize())
})
}
///////////
// Tests //
// ===== //
@@ -551,22 +519,7 @@ mod tests {
use super::*;
use crate::Group;
use crate::common::{Dst, STR_HASH_TO_GROUP};
fn prf<CS: CipherSuite>(
input: &[u8],
key: <CS::Group as Group>::Scalar,
mode: Mode,
) -> Output<CS::Hash> {
let dst = Dst::new::<CS, _>(STR_HASH_TO_GROUP, mode);
let point = CS::Group::hash_to_curve::<CS::Hash>(&[input], &dst.as_dst()).unwrap();
let res = point * &key;
finalize_after_unblind::<CS, _, _>(iter::once((input, res)))
.next()
.unwrap()
.unwrap()
}
use crate::tests::helpers::prf;
fn verifiable_retrieval<CS: CipherSuite>() {
let input = b"input";
@@ -713,7 +666,7 @@ mod tests {
// inputs
let wrong_input = b"wrong input";
let server_evaluate = server.evaluate(wrong_input).unwrap();
assert!(client_finalize != server_evaluate);
assert_ne!(client_finalize, server_evaluate);
}
fn zeroize_voprf_client<CS: CipherSuite>() {
@@ -750,53 +703,13 @@ mod tests {
assert!(proof.serialize().iter().all(|&x| x == 0));
}
#[test]
fn test_functionality() -> Result<()> {
use p256::NistP256;
use p384::NistP384;
use p521::NistP521;
#[cfg(feature = "ristretto255")]
{
use crate::Ristretto255;
verifiable_retrieval::<Ristretto255>();
verifiable_batch_retrieval::<Ristretto255>();
verifiable_bad_public_key::<Ristretto255>();
verifiable_batch_bad_public_key::<Ristretto255>();
verifiable_server_evaluate::<Ristretto255>();
zeroize_voprf_client::<Ristretto255>();
zeroize_voprf_server::<Ristretto255>();
}
verifiable_retrieval::<NistP256>();
verifiable_batch_retrieval::<NistP256>();
verifiable_bad_public_key::<NistP256>();
verifiable_batch_bad_public_key::<NistP256>();
verifiable_server_evaluate::<NistP256>();
zeroize_voprf_client::<NistP256>();
zeroize_voprf_server::<NistP256>();
verifiable_retrieval::<NistP384>();
verifiable_batch_retrieval::<NistP384>();
verifiable_bad_public_key::<NistP384>();
verifiable_batch_bad_public_key::<NistP384>();
verifiable_server_evaluate::<NistP384>();
zeroize_voprf_client::<NistP384>();
zeroize_voprf_server::<NistP384>();
verifiable_retrieval::<NistP521>();
verifiable_batch_retrieval::<NistP521>();
verifiable_bad_public_key::<NistP521>();
verifiable_batch_bad_public_key::<NistP521>();
verifiable_server_evaluate::<NistP521>();
zeroize_voprf_client::<NistP521>();
zeroize_voprf_server::<NistP521>();
Ok(())
}
crate::tests::test_all_curves!(
verifiable_retrieval,
verifiable_batch_retrieval,
verifiable_bad_public_key,
verifiable_batch_bad_public_key,
verifiable_server_evaluate,
zeroize_voprf_client,
zeroize_voprf_server,
);
}