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/serialization/tests.rs
+10 -9
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@@ -27,7 +27,8 @@ use sha2::Digest;
struct Default;
impl CipherSuite for Default {
type Group = RistrettoPoint;
type OprfGroup = RistrettoPoint;
type KeGroup = RistrettoPoint;
type KeyExchange = TripleDH;
type Hash = sha2::Sha512;
type SlowHash = crate::slow_hash::NoOpHash;
@@ -78,7 +79,7 @@ fn server_registration_roundtrip() {
// mock_envelope_bytes.extend_from_slice(&ciphertext); // ciphertext which is an encrypted private key
mock_envelope_bytes.extend_from_slice(&[0; MAC_SIZE]); // length-MAC_SIZE hmac
let mock_client_kp = KeyPair::<<Default as CipherSuite>::Group>::generate_random(&mut rng);
let mock_client_kp = KeyPair::<<Default as CipherSuite>::OprfGroup>::generate_random(&mut rng);
// serialization order: oprf_key, public key, envelope
let mut bytes = Vec::<u8>::new();
bytes.extend_from_slice(&mock_client_kp.public().to_arr());
@@ -118,7 +119,7 @@ fn registration_response_roundtrip() {
let pt = random_ristretto_point();
let beta_bytes = pt.to_arr();
let mut rng = OsRng;
let skp = KeyPair::<<Default as CipherSuite>::Group>::generate_random(&mut rng);
let skp = KeyPair::<<Default as CipherSuite>::OprfGroup>::generate_random(&mut rng);
let pubkey_bytes = skp.public().to_arr();
let mut input = Vec::new();
@@ -144,7 +145,7 @@ fn registration_response_roundtrip() {
#[test]
fn registration_upload_roundtrip() {
let mut rng = OsRng;
let skp = KeyPair::<<Default as CipherSuite>::Group>::generate_random(&mut rng);
let skp = KeyPair::<<Default as CipherSuite>::OprfGroup>::generate_random(&mut rng);
let pubkey_bytes = skp.public().to_arr();
let mut key = [0u8; 32];
@@ -176,7 +177,7 @@ fn credential_request_roundtrip() {
let alpha = random_ristretto_point();
let alpha_bytes = alpha.to_arr().to_vec();
let client_e_kp = KeyPair::<<Default as CipherSuite>::Group>::generate_random(&mut rng);
let client_e_kp = KeyPair::<<Default as CipherSuite>::OprfGroup>::generate_random(&mut rng);
let mut client_nonce = vec![0u8; NonceLen::to_usize()];
rng.fill_bytes(&mut client_nonce);
@@ -219,7 +220,7 @@ fn credential_response_roundtrip() {
];
rng.fill_bytes(&mut masked_response);
let server_e_kp = KeyPair::<<Default as CipherSuite>::Group>::generate_random(&mut rng);
let server_e_kp = KeyPair::<<Default as CipherSuite>::OprfGroup>::generate_random(&mut rng);
let mut mac = [0u8; MAC_SIZE];
rng.fill_bytes(&mut mac);
let mut server_nonce = vec![0u8; NonceLen::to_usize()];
@@ -274,7 +275,7 @@ fn client_login_roundtrip() {
let mut rng = OsRng;
let sc = <RistrettoPoint as Group>::random_nonzero_scalar(&mut rng);
let client_e_kp = KeyPair::<<Default as CipherSuite>::Group>::generate_random(&mut rng);
let client_e_kp = KeyPair::<<Default as CipherSuite>::OprfGroup>::generate_random(&mut rng);
let mut client_nonce = vec![0u8; NonceLen::to_usize()];
rng.fill_bytes(&mut client_nonce);
@@ -298,7 +299,7 @@ fn client_login_roundtrip() {
fn ke1_message_roundtrip() {
let mut rng = OsRng;
let client_e_kp = KeyPair::<<Default as CipherSuite>::Group>::generate_random(&mut rng);
let client_e_kp = KeyPair::<<Default as CipherSuite>::OprfGroup>::generate_random(&mut rng);
let mut client_nonce = vec![0u8; NonceLen::to_usize()];
rng.fill_bytes(&mut client_nonce);
@@ -315,7 +316,7 @@ fn ke1_message_roundtrip() {
fn ke2_message_roundtrip() {
let mut rng = OsRng;
let server_e_kp = KeyPair::<<Default as CipherSuite>::Group>::generate_random(&mut rng);
let server_e_kp = KeyPair::<<Default as CipherSuite>::OprfGroup>::generate_random(&mut rng);
let mut mac = [0u8; MAC_SIZE];
rng.fill_bytes(&mut mac);
let mut server_nonce = vec![0u8; NonceLen::to_usize()];