import { SigningKey } from '@ethersproject/signing-key';
import { BytesLike } from '@ethersproject/bytes';
export type ProgressCallback = (percent: number) => void;
export type EncryptOptions = {
    iv?: BytesLike;
    entropy?: BytesLike;
    mnemonic?: string;
    path?: string;
    client?: string;
    salt?: BytesLike;
    uuid?: string;
    scrypt?: {
        N?: number;
        r?: number;
        p?: number;
    };
};
export declare function decryptCrowdsale(json: string, password: BytesLike | string): SigningKey;
export declare function decrypt(json: string, password: BytesLike, progressCallback?: ProgressCallback): Promise<SigningKey>;
export declare function encrypt(privateKey: BytesLike | SigningKey, password: BytesLike | string, options?: EncryptOptions, progressCallback?: ProgressCallback): Promise<string>;