/**
 * Abstract base class for keystore decryption.
 *
 * A keystore is a JSON-encrypted container for a secret (typically a private
 * key or mnemonic phrase). Two formats are supported:
 * - **V1 (Legacy)**
 * - **V3 (Web3)**
 */
export declare abstract class Keystore {
    /**
     * Checks whether the provided password can decrypt this keystore.
     *
     * @param password - The password to verify.
     * @returns `true` if the password is correct.
     */
    abstract checkPassword(password: string): Promise<boolean>;
    /**
     * Decrypts the keystore and returns the raw secret bytes.
     *
     * @param password - The decryption password.
     * @throws {@link IncorrectKeystorePasswordError} if the password is wrong.
     */
    abstract decrypt(password: string): Promise<Uint8Array>;
}