/**
 * Copyright 2023 Fluence Labs Limited
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import { PeerIdB58 } from "@fluencelabs/interfaces";
import { ServiceFnArgs } from "../compilerSupport/types.js";
import { KeyPair } from "../keypair/index.js";
import { SecurityGuard } from "./securityGuard.js";
export declare const defaultSigGuard: (peerId: PeerIdB58) => SecurityGuard;
type SignReturnType = {
    error: [];
    signature: [number[]];
    success: true;
} | {
    error: [string];
    signature: [];
    success: false;
};
export declare class Sig {
    private keyPair;
    constructor(keyPair: KeyPair);
    /**
     * Configurable security guard for sign method
     */
    securityGuard: SecurityGuard;
    /**
     * Gets the public key of KeyPair. Required by aqua
     */
    get_peer_id(): string;
    /**
     * Signs the data using key pair's private key. Required by aqua
     */
    sign({ args: [data], context, }: ServiceFnArgs<[number[]]>): Promise<SignReturnType>;
    /**
     * Verifies the signature. Required by aqua
     */
    verify({ args: [signature, data], }: ServiceFnArgs<[number[], number[]]>): Promise<boolean>;
}
export {};