import { LotusMessage, SignedLotusMessage } from '@glif/filecoin-message';
import { CoinType } from '@glif/filecoin-address';
import { WalletSubProvider } from '../../wallet-sub-provider';
export declare class SECP256K1KeyProvider implements WalletSubProvider {
    #private;
    mainAddress: string;
    readonly type = "SINGLE_KEY_SECP256K1";
    constructor(privateKey: string, encoding?: 'base64' | 'hex');
    getAccounts(_: number, __: number, coinType?: CoinType): Promise<string[]>;
    keyDerive: (_: string) => Promise<string>;
    sign(from: string, message: LotusMessage): Promise<SignedLotusMessage>;
}
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