import type { Keystore } from './Keystore';
/** JSON shape of a V3 (Web3) keystore file. */
export interface Web3KeystoreData {
    crypto: {
        cipher: string;
        ciphertext: string;
        cipherparams: {
            iv: string;
        };
        kdf: 'scrypt' | 'pbkdf2';
        kdfparams: {
            dklen: number;
            n?: number;
            p?: number;
            r?: number;
            salt: string;
            c?: number;
            prf?: string;
        };
        mac: string;
    };
    version: 3;
}
/** Web3 (V3) keystore. */
export declare class Web3Keystore implements Keystore {
    private readonly keystoreData;
    constructor(keystoreData: Web3KeystoreData);
    checkPassword(password: string): Promise<boolean>;
    decrypt(password: string): Promise<Uint8Array>;
    private deriveKey;
    private verifyMac;
    /** Checks whether a parsed JSON object looks like a V3 keystore. */
    static isKeystore(obj: object): boolean;
}