import CryptoES from 'crypto-es';
type NotExistsErrorType = 'IV' | 'SESSION_ID';
export declare class UploaderChunk {
    chunk: CryptoES.lib.WordArray;
    order: number;
    encryptedSize: number;
    uploaderItemId: number;
    progress: number;
    uploadedBytes: number;
    abort?: () => void;
    status: 'UPLOADED' | 'ENCRYPTED' | 'CREATED' | 'FAILED_UPLOAD' | 'FAILED_ENCRYPTION';
    iv?: string;
    type?: string;
    retry?: number;
    session_id?: string;
    dbId?: number;
    encryptedFile?: CryptoES.lib.WordArray;
    hash?: string;
    size: number;
    rollingHash?: number;
    updateProgressFunc?: (progress: number) => void;
    error?: Error | unknown;
    constructor(chunk: CryptoES.lib.WordArray, order: number, encryptedSize: number, uploaderItemId: number);
    onProgress(loadedBytes: number, totalBytes: number): void;
    /**
     * calculates the encryption values (
     *  1. encryption of the chunk using the AES algorithm with CBC and PKCs7.
     *  2. The SHA256 hash of the encrypted chunk.
     *  3. The rolling hash of the SHA256 hash of the encrypted chunk)
     *
     */
    encrypt(encryptionKey: string): Promise<{
        encryptedFile: CryptoES.lib.WordArray;
        hash: string;
        rollingHash: number;
    } | undefined>;
    upload(): Promise<number | void | null>;
    _setError(type: NotExistsErrorType): void;
    setError(err: Error | unknown): void;
}
export {};