import { EncryptionHelper } from './EncryptionHelper';
import type { EncryptedBackup } from '../types';
import { Logger } from '../utils/logger';
/**
 * Key rotation utilities
 */
export declare class KeyRotation {
    private encryptionHelper;
    private logger;
    constructor(encryptionHelper: EncryptionHelper, logger?: Logger);
    /**
     * Rotate all encryption keys
     * Re-encrypts all data with a new salt
     */
    rotateKeys(): Promise<void>;
    /**
     * Export all encrypted data as backup
     */
    exportEncryptedData(): Promise<EncryptedBackup>;
    /**
     * Import encrypted data from backup
     */
    importEncryptedData(backup: EncryptedBackup): Promise<void>;
}