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crypto: Move the device_keys() method into the account.

master
Damir Jelić 2020-07-10 17:10:34 +02:00
parent 58d79ca9c6
commit 6ded76a5a7
2 changed files with 72 additions and 53 deletions
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55
matrix_sdk_crypto/src/machine.rs
View File

@ -94,11 +94,6 @@ impl std::fmt::Debug for OlmMachine {
}
impl OlmMachine {
const ALGORITHMS: &'static [&'static Algorithm] = &[
&Algorithm::OlmV1Curve25519AesSha2,
&Algorithm::MegolmV1AesSha2,
];
const MAX_TO_DEVICE_MESSAGES: usize = 20;
/// Create a new memory based OlmMachine.
@ -568,50 +563,6 @@ impl OlmMachine {
}
}
/// Sign the device keys and return a JSON Value to upload them.
async fn device_keys(&self) -> DeviceKeys {
let identity_keys = self.account.identity_keys();
let mut keys = BTreeMap::new();
keys.insert(
AlgorithmAndDeviceId(KeyAlgorithm::Curve25519, self.device_id.clone()),
identity_keys.curve25519().to_owned(),
);
keys.insert(
AlgorithmAndDeviceId(KeyAlgorithm::Ed25519, self.device_id.clone()),
identity_keys.ed25519().to_owned(),
);
let device_keys = json!({
"user_id": self.user_id,
"device_id": self.device_id,
"algorithms": OlmMachine::ALGORITHMS,
"keys": keys,
});
let mut signatures = BTreeMap::new();
let mut signature = BTreeMap::new();
signature.insert(
AlgorithmAndDeviceId(KeyAlgorithm::Ed25519, self.device_id.clone()),
self.sign_json(&device_keys).await,
);
signatures.insert(self.user_id.clone(), signature);
DeviceKeys {
user_id: self.user_id.clone(),
device_id: self.device_id.clone(),
algorithms: vec![
Algorithm::OlmV1Curve25519AesSha2,
Algorithm::MegolmV1AesSha2,
],
keys,
signatures,
unsigned: None,
}
}
/// Generate, sign and prepare one-time keys to be uploaded.
///
/// If no one-time keys need to be uploaded returns an empty error.
@ -743,7 +694,7 @@ impl OlmMachine {
let shared = self.account.shared();
let device_keys = if !shared {
Some(self.device_keys().await)
Some(self.account.device_keys().await)
} else {
None
};
@ -1803,7 +1754,7 @@ mod test {
async fn test_device_key_signing() {
let machine = OlmMachine::new(&user_id(), &alice_device_id());
let mut device_keys = machine.device_keys().await;
let mut device_keys = machine.account.device_keys().await;
let identity_keys = machine.account.identity_keys();
let ed25519_key = identity_keys.ed25519();
@ -1836,7 +1787,7 @@ mod test {
async fn test_invalid_signature() {
let machine = OlmMachine::new(&user_id(), &alice_device_id());
let mut device_keys = machine.device_keys().await;
let mut device_keys = machine.account.device_keys().await;
let ret = machine.verify_json(
&machine.user_id,

70
matrix_sdk_crypto/src/olm.rs
View File

@ -19,6 +19,8 @@ use std::sync::Arc;
use matrix_sdk_common::locks::Mutex;
use serde::Serialize;
use serde_json::{json, Value};
use std::collections::BTreeMap;
use zeroize::Zeroize;
pub use olm_rs::account::IdentityKeys;
@ -34,8 +36,11 @@ pub use olm_rs::{
utility::OlmUtility,
};
use matrix_sdk_common::api::r0::keys::SignedKey;
use matrix_sdk_common::identifiers::{DeviceId, RoomId, UserId};
use matrix_sdk_common::{
api::r0::keys::{AlgorithmAndDeviceId, DeviceKeys, KeyAlgorithm, SignedKey},
events::Algorithm,
};
/// Account holding identity keys for which sessions can be created.
///
@ -61,6 +66,11 @@ impl fmt::Debug for Account {
}
impl Account {
const ALGORITHMS: &'static [&'static Algorithm] = &[
&Algorithm::OlmV1Curve25519AesSha2,
&Algorithm::MegolmV1AesSha2,
];
/// Create a fresh new account, this will generate the identity key-pair.
pub fn new(user_id: &UserId, device_id: &DeviceId) -> Self {
let account = OlmAccount::new();
@ -162,6 +172,64 @@ impl Account {
})
}
/// Sign the device keys of the account and return them so they can be
/// uploaded.
pub async fn device_keys(&self) -> DeviceKeys {
let identity_keys = self.identity_keys();
let mut keys = BTreeMap::new();
keys.insert(
AlgorithmAndDeviceId(KeyAlgorithm::Curve25519, (*self.device_id).clone()),
identity_keys.curve25519().to_owned(),
);
keys.insert(
AlgorithmAndDeviceId(KeyAlgorithm::Ed25519, (*self.device_id).clone()),
identity_keys.ed25519().to_owned(),
);
let device_keys = json!({
"user_id": (*self.user_id).clone(),
"device_id": (*self.device_id).clone(),
"algorithms": Account::ALGORITHMS,
"keys": keys,
});
let mut signatures = BTreeMap::new();
let mut signature = BTreeMap::new();
signature.insert(
AlgorithmAndDeviceId(KeyAlgorithm::Ed25519, (*self.device_id).clone()),
self.sign_json(&device_keys).await,
);
signatures.insert((*self.user_id).clone(), signature);
DeviceKeys {
user_id: (*self.user_id).clone(),
device_id: (*self.device_id).clone(),
algorithms: vec![
Algorithm::OlmV1Curve25519AesSha2,
Algorithm::MegolmV1AesSha2,
],
keys,
signatures,
unsigned: None,
}
}
/// Convert a JSON value to the canonical representation and sign the JSON
/// string.
///
/// # Arguments
///
/// * `json` - The value that should be converted into a canonical JSON
/// string.
pub async fn sign_json(&self, json: &Value) -> String {
let canonical_json = cjson::to_string(json)
.unwrap_or_else(|_| panic!(format!("Can't serialize {} to canonical JSON", json)));
self.sign(&canonical_json).await
}
/// Create a new session with another account given a one-time key.
///
/// Returns the newly created session or a `OlmSessionError` if creating a