export declare class SignedUrlService {
    private readonly SECRET_KEY;
    constructor();
    generateSignedUrl(cabinetId: number, patientId: number | null, docType: string, filename: string, extension: string, userId?: number, expiresInMinutes?: number): string;
    verifySignature(cabinetId: number, patientId: number | null, docType: string, filename: string, extension: string, signature: string, expires: number, userId?: number): boolean;
}