import { ConfigService } from '@nestjs/config';
export declare class CryptoService {
    private readonly config;
    private generationKey;
    private generationIV;
    private encryptData;
    private decryptData;
    constructor(config: ConfigService);
    generateUniqueId(length: number): string;
    generateKeyAndIV(): {
        key: any;
        iv: any;
    };
    encrypt(data: any): string;
    decrypt(data: any): string;
}