import { byte } from "./types.js";
declare function nativeEd25519Sign(privateKey: Uint8Array, data: Uint8Array): Promise<Uint8Array>;
export declare function ed25519bigint(n: bigint): bigint;
declare function nativeEd25519Verify(publicKey: Uint8Array, signature: Uint8Array | ArrayBuffer, data: Uint8Array | ArrayBuffer): Promise<boolean>;
export type bigpoint = [bigint, bigint];
/**
 * Curve point 'addition'
 * Note: this is probably the bottleneck of this Ed25519 implementation
 */
export declare function addPointsEdwards(a: Readonly<bigpoint>, b: Readonly<bigpoint>): bigpoint;
export declare function scalarMul(point: Readonly<bigpoint>, n: bigint): bigpoint;
/**
 * Curve point 'multiplication'
 */
export declare function encodeInt(y: bigint): Uint8Array;
export declare function bigpointToUint8Array(point: bigpoint): Uint8Array;
export declare function pointFromBytes(s: Uint8Array): bigpoint;
export declare function scalarFromBytes(h: Uint8Array): bigint;
export declare function scalarToBytes(s: bigint): Uint8Array;
type Uint8ArrayLike = ArrayBuffer | Uint8Array | string | byte[];
export declare function scalarMultBase(scalar: bigint): bigpoint;
export declare function getExtendEd25519PrivateKeyComponentsAsBytes_sync(privateKey: Uint8Array): [scalar: Uint8Array, extension: Uint8Array];
export declare function getExtendEd25519PrivateKeyComponents_sync(privateKey: Uint8Array): [scalar: bigint, extension: Uint8Array];
export declare function getExtendedEd25519PrivateKey_sync(privateKey: Uint8Array): Uint8Array;
export declare function getExtendedEd25519PrivateKey(privateKey: Uint8Array): Promise<Uint8Array>;
export declare function deriveEd25519PublicKey_sync(privateKey: Uint8Array): Uint8Array;
declare function deriveEd25519PublicKey_async(privateKey: Uint8Array): Promise<Uint8Array>;
export declare const deriveEd25519PublicKey: typeof deriveEd25519PublicKey_async;
export declare function extendedToPublic(extended: Uint8Array | byte[]): Uint8Array;
export interface SignEd25519Result {
    0: Uint8Array;
    1: Uint8Array;
    /** to be `ArrayLike` */
    length: 2;
    [Symbol.iterator]: () => Generator<Uint8Array, void, unknown>;
    pubKey: Uint8Array;
    signature: Uint8Array;
}
/** sign a message with a (32 bytes) private key */
export declare function signEd25519_sync(message: Uint8ArrayLike, privateKey: Uint8ArrayLike): SignEd25519Result;
/** sign a message with a (32 bytes) private key */
export declare function signEd25519(message: Uint8ArrayLike, privateKey: Uint8ArrayLike): Promise<SignEd25519Result>;
/** sign a message with a (64 bytes) private key */
export declare function signExtendedEd25519_sync(_message: Uint8ArrayLike, _extendedKey: Uint8ArrayLike): SignEd25519Result;
/** sign a message with a (64 bytes) private key */
declare function nativeExtendedSignEd25519(_message: Uint8ArrayLike, _extendedKey: Uint8ArrayLike): Promise<SignEd25519Result>;
/** sign a message with a (64 bytes) private key */
export declare const signExtendedEd25519: typeof nativeExtendedSignEd25519;
/** sign a message with a (32 bytes) private key */
export declare function getEd25519Signature_sync(message: Uint8ArrayLike, privateKey: Uint8ArrayLike): Uint8Array;
/** sign a message with a (32 bytes) private key */
export declare const getEd25519Signature: typeof nativeEd25519Sign;
export declare function verifyEd25519Signature_sync(_signature: Uint8ArrayLike, _message: Uint8ArrayLike, _publicKey: Uint8ArrayLike): boolean;
export declare const verifyEd25519Signature: typeof nativeEd25519Verify;
export {};