import type { Cipher, KeyWrapper } from '@web5/crypto';
import type { KeyExporter, KeyImporter } from './types/key-io.js';
export declare function isCipher<EncryptInput, DecryptInput>(obj: unknown): obj is Cipher<EncryptInput, DecryptInput>;
export declare function isKeyExporter<ExportKeyInput, ExportKeyOutput>(obj: unknown): obj is KeyExporter<ExportKeyInput, ExportKeyOutput>;
export declare function isKeyImporter<ImportKeyInput, ImportKeyExport>(obj: unknown): obj is KeyImporter<ImportKeyInput, ImportKeyExport>;
export declare function isKeyWrapper<WrapKeyInput, UnwrapKeyInput>(obj: unknown): obj is KeyWrapper<WrapKeyInput, UnwrapKeyInput>;
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