import { Kdbx } from './kdbx';
import { KdbxContext } from './kdbx-context';
export declare class KdbxFormat {
    readonly kdbx: Kdbx;
    readonly ctx: KdbxContext;
    preserveXml: boolean;
    constructor(kdbx: Kdbx);
    load(data: ArrayBuffer): Promise<Kdbx>;
    private loadV3;
    private loadV4;
    loadXml(xmlStr: string): Promise<Kdbx>;
    save(): Promise<ArrayBuffer>;
    private saveV3;
    private saveV4;
    saveXml(prettyPrint?: boolean): Promise<string>;
    private decryptXmlV3;
    private encryptXmlV3;
    private getMasterKeyV3;
    private trimStartBytesV3;
    private setProtectedValues;
    private getProtectSaltGenerator;
    private getHeaderHash;
    private getHeaderHmac;
    private checkHeaderHashV3;
    private computeKeysV4;
    private decryptData;
    private encryptData;
    private transformDataV4Aes;
    private transformDataV4ChaCha20;
    private cleanXml;
}