/**
 * Generate a new swarm key using cryptographically secure random bytes.
 */
export declare function generateSwarmKey(outputPath?: string): string;
/**
 * Force-regenerate the swarm key (e.g., if compromised).
 */
export declare function regenerateSwarmKey(): string;
/**
 * Install the swarm key into the IPFS directory.
 */
export declare function installSwarmKey(swarmKeyPath?: string): void;
/**
 * Read and return the current swarm key content.
 */
export declare function readSwarmKey(): string | null;
/**
 * Export swarm key encrypted with AES-256-GCM.
 */
export declare function exportKeyEncrypted(passphrase: string, outputPath?: string): string;
/**
 * Import and decrypt an encrypted swarm key.
 */
export declare function importKeyEncrypted(encryptedPath: string, passphrase: string): void;
/**
 * Start a one-time HTTP(S) server to securely share the swarm key.
 * Server auto-destroys after one successful transfer or timeout.
 *
 * If useTLS is true, generates a self-signed certificate for encrypted transfer.
 */
export declare function serveKey(port?: number, useTLS?: boolean): Promise<{
    pin: string;
    url: string;
}>;
/**
 * Fetch swarm key from a remote key server.
 */
export declare function fetchKey(host: string, port: number, pin: string): Promise<void>;
/**
 * Copy swarm key to a remote host via SCP.
 */
export declare function copyKeyViaSSH(target: string): Promise<void>;
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