type KeychainNativeModule = {
    isAvailable: () => Promise<boolean>;
    hasKey: (key: string) => Promise<boolean>;
    generateKeyPair: (key: string) => Promise<{
        publicKey: string;
    }>;
    getPublicKey: (key: string) => Promise<{
        publicKey: string;
    } | null>;
    sign: (key: string, payload: string) => Promise<{
        signature: string;
    }>;
    deleteKey: (key: string) => Promise<void>;
};
/**
 * Reports whether the Keychain native module is linked into the currently
 * running native binary. Mirrors `isEmbeddedWebViewAvailable`: an over-the-air
 * JS update can run on an older binary that predates the module, so any
 * unexpected throw is treated as "unavailable".
 */
export declare const isKeychainAvailable: () => boolean;
export declare const getKeychain: () => KeychainNativeModule;
export {};