import { EncryptionProto, SdkWsProto } from '@openim/protocol';
import { MixinApiService } from '../..';
export default class Encryptor {
    private ctx;
    private aesEncryptor;
    private cachedVersionKeys;
    constructor(ctx: MixinApiService);
    private getEncryptionKeyFromServer;
    getMaxVersionKey: (conversationID: string, operationID: string) => Promise<EncryptionProto.VersionKey>;
    getKeyByMessageVersion: (req: EncryptionProto.GetEncryptionKeyReq, operationID: string) => Promise<EncryptionProto.VersionKey>;
    encryption: (conversationID: string, msgData: SdkWsProto.MsgData, operationID: string) => Promise<void>;
    decryption: (conversationID: string, msgData: SdkWsProto.MsgData, operationID: string) => Promise<void>;
}