export interface BackupMetadata {
    version: number;
    createdAt: string;
    keystorePath: string;
    identityCount: number;
    credentialCount: number;
    encrypted: boolean;
}
export declare class BackupManager {
    private keystorePath;
    constructor(keystorePath: string);
    /**
     * Create a backup of the keystore
     */
    backup(backupPath: string, options?: {
        encrypt?: boolean;
        password?: string;
        includeCredentials?: boolean;
    }): Promise<BackupMetadata>;
    /**
     * Restore from a backup
     */
    restore(backupPath: string, options?: {
        password?: string;
        targetPath?: string;
    }): Promise<BackupMetadata>;
    /**
     * Encrypt backup data
     */
    private encryptBackup;
    /**
     * Decrypt backup data
     */
    private decryptBackup;
    /**
     * Check if file exists
     */
    private fileExists;
}
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