/// <reference types="node" />
import BN from 'bn.js';
export declare function privateKeyVerify(privateKey: Buffer): boolean;
export declare function privateKeyExport(privateKey: Buffer, compressed: boolean): Buffer;
export declare function privateKeyNegate(privateKey: Buffer): any;
export declare function privateKeyModInverse(privateKey: Buffer): Buffer;
export declare function privateKeyTweakAdd(privateKey: Buffer, tweak: Buffer): Buffer;
export declare function privateKeyTweakMul(privateKey: Buffer, tweak: Buffer): Buffer;
export declare function publicKeyCreate(privateKey: Buffer, compressed: boolean): Buffer;
export declare function publicKeyConvert(publicKey: Buffer, compressed: boolean): Buffer;
export declare function publicKeyVerify(publicKey: Buffer): boolean;
export declare function publicKeyTweakAdd(publicKey: Buffer, tweak: Buffer | BN, compressed: boolean): Buffer;
export declare function publicKeyTweakMul(publicKey: Buffer, tweak: Buffer | BN, compressed: boolean): Buffer;
export declare function publicKeyCombine(publicKeys: Buffer[], compressed: boolean): Buffer;
export declare function signatureNormalize(signature: Buffer): Buffer;
export declare function signatureExport(signature: Buffer): {
    r: Buffer;
    s: Buffer;
};
export declare function signatureImport(sigObj: any): Buffer;
export declare function sign(message: Buffer, privateKey: Buffer, noncefn?: any, data?: any): {
    signature: Buffer;
    recovery: number | null;
};
export declare function verify(message: Buffer, signature: Buffer, publicKey: Buffer): boolean;
export declare function recover(message: Buffer, signature: Buffer, recovery: number, compressed: boolean): Buffer;
export declare function ecdh(publicKey: Buffer, privateKey: Buffer): Buffer;
export declare function ecdhUnsafe(publicKey: Buffer, privateKey: Buffer, compressed: boolean): Buffer;