/**
 * Signer
 */
declare class Signer {
    private static _cryptoSignFunction;
    static setRemoteCryptoSignFunction(fn: any): void;
    static getRemoteCryptoSignFunction(): any;
    /**
     * 使用RSA-SHA256
     * @param buffer
     * @param prikey
     */
    static defaultCryptoSignFunction(buffer: Buffer, prikey: Buffer): Buffer;
}
export default Signer;