vexahub/opaque-vx
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Separate AKE from OPRF take 2 (#222)

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* Separate AKE from OPRF

Introduce X25519 implementation

* Rename `AkeGroup` to `KeGroup` and `Group` to `OprfGroup`

* Add documentation to "Overview"
This commit is contained in:
daxpedda
2021-08-04 12:24:46 -07:00
committed by GitHub
parent 10a38bc58b
commit 88673d8e05
14 changed files with 377 additions and 157 deletions
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src/tests/full_test.rs
+10 -9
View File
@@ -29,7 +29,8 @@ use zeroize::Zeroize;
struct RistrettoSha5123dhNoSlowHash;
impl CipherSuite for RistrettoSha5123dhNoSlowHash {
type Group = RistrettoPoint;
type OprfGroup = RistrettoPoint;
type KeGroup = RistrettoPoint;
type KeyExchange = TripleDH;
type Hash = sha2::Sha512;
type SlowHash = NoOpHash;
@@ -280,11 +281,11 @@ fn generate_parameters<CS: CipherSuite>() -> TestVectorParameters {
let mut rng = OsRng;
// Inputs
let server_s_kp = KeyPair::<CS::Group>::generate_random(&mut rng);
let server_e_kp = KeyPair::<CS::Group>::generate_random(&mut rng);
let client_s_kp = KeyPair::<CS::Group>::generate_random(&mut rng);
let client_e_kp = KeyPair::<CS::Group>::generate_random(&mut rng);
let fake_kp = KeyPair::<CS::Group>::generate_random(&mut rng);
let server_s_kp = KeyPair::<CS::OprfGroup>::generate_random(&mut rng);
let server_e_kp = KeyPair::<CS::OprfGroup>::generate_random(&mut rng);
let client_s_kp = KeyPair::<CS::OprfGroup>::generate_random(&mut rng);
let client_e_kp = KeyPair::<CS::OprfGroup>::generate_random(&mut rng);
let fake_kp = KeyPair::<CS::OprfGroup>::generate_random(&mut rng);
let credential_identifier = b"credIdentifier";
let id_u = b"idU";
let id_s = b"idS";
@@ -307,14 +308,14 @@ fn generate_parameters<CS: CipherSuite>() -> TestVectorParameters {
)
.unwrap();
let blinding_factor = CS::Group::random_nonzero_scalar(&mut rng);
let blinding_factor_bytes = CS::Group::scalar_as_bytes(blinding_factor);
let blinding_factor = CS::OprfGroup::random_nonzero_scalar(&mut rng);
let blinding_factor_bytes = CS::OprfGroup::scalar_as_bytes(blinding_factor);
let mut blinding_factor_registration_rng = CycleRng::new(blinding_factor_bytes.to_vec());
let client_registration_start_result =
ClientRegistration::<CS>::start(&mut blinding_factor_registration_rng, password).unwrap();
let blinding_factor_bytes_returned =
CS::Group::scalar_as_bytes(client_registration_start_result.state.token.blind);
CS::OprfGroup::scalar_as_bytes(client_registration_start_result.state.token.blind);
assert_eq!(
hex::encode(&blinding_factor_bytes),
hex::encode(&blinding_factor_bytes_returned)
src/tests/opaque_test_vectors.rs
+5 -3
View File
@@ -17,7 +17,8 @@ use serde_json::Value;
struct Ristretto255Sha512NoSlowHash;
impl CipherSuite for Ristretto255Sha512NoSlowHash {
type Group = RistrettoPoint;
type OprfGroup = RistrettoPoint;
type KeGroup = RistrettoPoint;
type KeyExchange = TripleDH;
type Hash = sha2::Sha512;
type SlowHash = NoOpHash;
@@ -27,7 +28,8 @@ impl CipherSuite for Ristretto255Sha512NoSlowHash {
struct P256Sha256NoSlowHash;
#[cfg(feature = "p256")]
impl CipherSuite for P256Sha256NoSlowHash {
type Group = p256_::ProjectivePoint;
type OprfGroup = p256_::ProjectivePoint;
type KeGroup = p256_::ProjectivePoint;
type KeyExchange = TripleDH;
type Hash = sha2::Sha256;
type SlowHash = NoOpHash;
@@ -750,7 +752,7 @@ fn populate_test_vectors<CS: CipherSuite>(values: &Value) -> TestVectorParameter
dummy_private_key: parse_default!(
values,
"client_private_key",
vec![0u8; <PrivateKey<CS::Group> as SizedBytes>::Len::to_usize()]
vec![0u8; <PrivateKey<CS::OprfGroup> as SizedBytes>::Len::to_usize()]
),
dummy_masking_key: parse_default!(values, "masking_key", vec![0u8; 64]),
context: parse!(values, "Context"),