import type { KeyData, XHDDerivedKeyData, XHDDomainP256KeyData, XHDRootKey } from "./types/index.ts";
export declare function signXHDDomainP256KeyData({ key, root, data, }: {
    key: XHDDomainP256KeyData;
    root: XHDRootKey;
    data: Uint8Array;
}): Promise<Uint8Array<ArrayBufferLike>>;
export declare function signXHDEd25519({ key, root, data, }: {
    key: XHDDerivedKeyData;
    root: XHDRootKey;
    data: Uint8Array;
}): Promise<Uint8Array<ArrayBufferLike>>;
/**
 * Signs data using the provided key data and optional parent key for HD derivation.
 *
 * @param params - The signing parameters.
 * @param params.key - The {@link KeyData} containing the private key.
 * @param params.data - The data to sign.
 * @param params.parentKey - Optional parent {@link KeyData} for HD derivation.
 * @returns A promise that resolves to the signature.
 */
export declare function signWithKeyData({ key, data, parentKey, }: {
    key: KeyData;
    data: Uint8Array<ArrayBufferLike>;
    parentKey?: KeyData;
}): Promise<Uint8Array<ArrayBufferLike>>;
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