/**
 * Credential store service for aibtc-mcp-server.
 *
 * Compatible implementation of Arc's credential store (AES-256-GCM + scrypt KDF).
 * Storage: ~/.aibtc/credentials.enc
 * Password: ARC_CREDS_PASSWORD env var
 */
export declare function unlock(password?: string): Promise<void>;
export declare function lock(): void;
export declare function isUnlocked(): boolean;
export declare function get(service: string, key: string): string | null;
export declare function set(service: string, key: string, value: string): Promise<void>;
export declare function del(service: string, key: string): Promise<boolean>;
export declare function list(): Array<{
    service: string;
    key: string;
    updatedAt: string;
}>;
export declare function storePath(): string;
export declare const credentials: {
    unlock: typeof unlock;
    lock: typeof lock;
    isUnlocked: typeof isUnlocked;
    get: typeof get;
    set: typeof set;
    del: typeof del;
    list: typeof list;
    storePath: typeof storePath;
};
export default credentials;
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