/**
 * macOS Keychain backend via the `security` CLI.
 *
 * Uses `security add-generic-password` / `find-generic-password` /
 * `delete-generic-password` which ship with every macOS install.
 *
 * The key is stored in the user's login keychain under:
 *   service: "aegis"   account: "master-key"
 */
import type { KeyStorage, KeyStorageBackend } from './key-storage.js';
export declare class MacOSKeychainStorage implements KeyStorage {
    readonly name = "macOS Keychain";
    readonly backend: KeyStorageBackend;
    isAvailable(): boolean;
    getKey(): string | undefined;
    setKey(key: string): void;
    deleteKey(): void;
}
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