A self hosted chat application with end-to-end encrypted messaging.
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import { EncryptionService } from "./EncryptionService";
import * as sjcl from "sjcl";
import { MessageCipherDTO } from "../dto/MessageCipherDTO";
export class SJCLEncryptionService implements EncryptionService {
private _params = { mode: "gcm", ts: 128, adata: "", iter: 10000 };
// @ts-ignore
private readonly _promiseWorker: any;
constructor(promiseWorker: any ) {
this._promiseWorker = promiseWorker;
}
public encrypt(passphrase: string, plainText: string): MessageCipherDTO {
// @ts-ignore
return JSON.parse(sjcl.encrypt(passphrase, plainText, this._params) as string) as MessageCipherDTO;
}
public decrypt(passphrase: string, cipher: MessageCipherDTO): string {
return sjcl.decrypt(passphrase, JSON.stringify(cipher), undefined, undefined);
}
public async decryptAsPromise(passphrase: string, cipher: MessageCipherDTO): Promise<string> {
const decrypted = await this._promiseWorker.postMessage({"passphrase": passphrase, "cipher": cipher})
return decrypted;
}
}