89 lines
2.3 KiB
Go
89 lines
2.3 KiB
Go
// Copyright (c) 2022 Tulir Asokan
|
|
//
|
|
// This Source Code Form is subject to the terms of the Mozilla Public
|
|
// License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
|
|
|
package crypto
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"maunium.net/go/mautrix"
|
|
"maunium.net/go/mautrix/id"
|
|
)
|
|
|
|
type CrossSigningPublicKeysCache struct {
|
|
MasterKey id.Ed25519
|
|
SelfSigningKey id.Ed25519
|
|
UserSigningKey id.Ed25519
|
|
}
|
|
|
|
func (mach *OlmMachine) GetOwnCrossSigningPublicKeys() *CrossSigningPublicKeysCache {
|
|
if mach.crossSigningPubkeys != nil {
|
|
return mach.crossSigningPubkeys
|
|
}
|
|
if mach.CrossSigningKeys != nil {
|
|
mach.crossSigningPubkeys = mach.CrossSigningKeys.PublicKeys()
|
|
return mach.crossSigningPubkeys
|
|
}
|
|
if mach.crossSigningPubkeysFetched {
|
|
return nil
|
|
}
|
|
cspk, err := mach.GetCrossSigningPublicKeys(mach.Client.UserID)
|
|
if err != nil {
|
|
mach.Log.Error("Failed to get own cross-signing public keys: %v", err)
|
|
return nil
|
|
}
|
|
mach.crossSigningPubkeys = cspk
|
|
mach.crossSigningPubkeysFetched = true
|
|
return mach.crossSigningPubkeys
|
|
}
|
|
|
|
func (mach *OlmMachine) GetCrossSigningPublicKeys(userID id.UserID) (*CrossSigningPublicKeysCache, error) {
|
|
dbKeys, err := mach.CryptoStore.GetCrossSigningKeys(userID)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to get keys from database: %w", err)
|
|
}
|
|
if len(dbKeys) > 0 {
|
|
masterKey, ok := dbKeys[id.XSUsageMaster]
|
|
if ok {
|
|
selfSigning, _ := dbKeys[id.XSUsageSelfSigning]
|
|
userSigning, _ := dbKeys[id.XSUsageUserSigning]
|
|
return &CrossSigningPublicKeysCache{
|
|
MasterKey: masterKey.Key,
|
|
SelfSigningKey: selfSigning.Key,
|
|
UserSigningKey: userSigning.Key,
|
|
}, nil
|
|
}
|
|
}
|
|
|
|
keys, err := mach.Client.QueryKeys(&mautrix.ReqQueryKeys{
|
|
DeviceKeys: mautrix.DeviceKeysRequest{
|
|
userID: mautrix.DeviceIDList{},
|
|
},
|
|
})
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to query keys: %w", err)
|
|
}
|
|
|
|
var cspk CrossSigningPublicKeysCache
|
|
|
|
masterKeys, ok := keys.MasterKeys[userID]
|
|
if !ok {
|
|
return nil, nil
|
|
}
|
|
cspk.MasterKey = masterKeys.FirstKey()
|
|
|
|
selfSigningKeys, ok := keys.SelfSigningKeys[userID]
|
|
if !ok {
|
|
return nil, nil
|
|
}
|
|
cspk.SelfSigningKey = selfSigningKeys.FirstKey()
|
|
|
|
userSigningKeys, ok := keys.UserSigningKeys[userID]
|
|
if ok {
|
|
cspk.UserSigningKey = userSigningKeys.FirstKey()
|
|
}
|
|
return &cspk, nil
|
|
}
|