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Setup new encryption flow

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This commit is contained in:
Hinton 2020-10-19 12:21:07 +02:00
parent 1bb81270d9
commit 54c53e432b
1 changed files with 12 additions and 9 deletions
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21
src/services/nativeMessaging.service.ts
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@ -5,14 +5,14 @@ import { CryptoFunctionService } from 'jslib/abstractions/cryptoFunction.service
import { PlatformUtilsService } from 'jslib/abstractions/platformUtils.service';
import { LogService } from 'jslib/abstractions/log.service';
import { Utils } from 'jslib/misc/utils';
import { SymmetricCryptoKey } from 'jslib/models/domain/symmetricCryptoKey';
const MessageValidTimeout = 10 * 1000;
const EncryptionAlgorithm = 'sha256';
const EncryptionAlgorithm = 'sha1';
export class NativeMessagingService {
private publicKey: ArrayBuffer;
private privateKey: ArrayBuffer;
private remotePublicKey: ArrayBuffer;
private sharedSecret: any;
constructor(private cryptoFunctionService: CryptoFunctionService, private cryptoService: CryptoService,
private platformUtilService: PlatformUtilsService, private logService: LogService) {
@ -28,9 +28,9 @@ export class NativeMessagingService {
return;
}
debugger;
const message = JSON.parse(Utils.fromBufferToUtf8(await this.cryptoFunctionService.rsaDecrypt(rawMessage, this.privateKey, EncryptionAlgorithm)));
console.log(message);
// TODO: Add error handler, if it fails we should invalidate the key and send a re-authenticate message to browser
const message = JSON.parse(await this.cryptoService.decryptToUtf8(rawMessage, this.sharedSecret));
if (Math.abs(message.timestamp - Date.now()) > MessageValidTimeout) {
this.logService.error('NativeMessage is to old, ignoring.');
return;
@ -58,14 +58,17 @@ export class NativeMessagingService {
private async send(message: any) {
message.timestamp = Date.now();
const encrypted = await this.cryptoFunctionService.rsaEncrypt(Utils.fromUtf8ToArray(JSON.stringify(message)), this.remotePublicKey, EncryptionAlgorithm);
const encrypted = await this.cryptoService.encrypt(JSON.stringify(message), this.sharedSecret);
ipcRenderer.send('nativeMessagingReply', encrypted);
}
private async secureCommunication() {
[this.publicKey, this.privateKey] = await this.cryptoFunctionService.rsaGenerateKeyPair(2048);
const secret = await this.cryptoFunctionService.randomBytes(64);
this.sharedSecret = new SymmetricCryptoKey(secret);
this.send({command: 'setupEncryption', publicKey: Utils.fromBufferToB64(this.publicKey)});
const encryptedSecret = await this.cryptoFunctionService.rsaEncrypt(secret, this.remotePublicKey, EncryptionAlgorithm);
ipcRenderer.send('nativeMessagingReply', {command: 'setupEncryption', sharedSecret: Utils.fromBufferToB64(encryptedSecret)});
}
}