/**
 *  Copyright 2023 OwlMeans
 *
 *  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.
 */
/// <reference types="node" />
import { LDKeyPair } from 'crypto-ld';
import { JwsLinkedDataSignature } from '@digitalbazaar/jws-linked-data-signature';
export declare const KEY_TYPE = "EcdsaSecp256k1Signature2019";
export declare const VERIFICATION_KEY_TYPE = "EcdsaSecp256k1VerificationKey2019";
export declare class Secp256k1Key extends LDKeyPair implements Secp256k1CryptoKey {
    type: string;
    pubKey?: Uint8Array;
    pk?: Uint8Array;
    id: string;
    controller?: string;
    static SUITE_CONTEXT: string;
    constructor(options: Secp256k1KeyOptions);
    publicNode(): {
        id: string;
        type: string;
        controller: string;
        publicKeyHex: string | undefined;
    };
    static generate(options?: Secp256k1KeyOptions): Promise<Secp256k1Key>;
    static from(options?: Secp256k1KeyOptions): Promise<Secp256k1Key>;
    fingerprint(): string;
    verifyFingerprint({ fingerprint }: {
        fingerprint: string;
    }): {
        error: unknown;
        verified: boolean;
    } | {
        verified: boolean;
        error?: undefined;
    };
    signer(): {
        sign: (options?: SigningOption) => Promise<Buffer>;
    };
    verifier(): {
        verify: (options?: SigningOption) => Promise<boolean>;
    };
}
interface SigningOption {
    data: {
        buffer: any;
        byteOffset: number;
        length: number;
    };
    signature?: Uint8Array;
}
export declare class Secp256k1Signature extends JwsLinkedDataSignature {
    constructor(options: Secp256k1SignatureOptions);
    getVerificationMethod(): {
        id: string;
        type: string;
        controller: string;
        publicKeyHex: string | undefined;
    };
    ensureSuiteContext(): void;
}
export interface Secp256k1CryptoKey {
    type: string;
    pubKey?: Uint8Array;
    pk?: Uint8Array;
    id: string;
    controller?: string;
    revoked?: string;
}
export interface Secp256k1KeyOptions {
    id: string;
    controller?: string;
    revoked?: string;
    pubKey?: Uint8Array;
    pk?: Uint8Array;
}
export interface Secp256k1SignatureOptions {
    key?: {
        id: string;
        signer: any;
        verifier: any;
    };
    singer?: any;
    verifier?: any;
    proof?: any;
    date?: Date | string;
    useNativeCanonize?: boolean;
    canonizeOptions?: boolean;
}
export {};
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