namespace JNPF.Common.Captcha.General;

/// <summary>
/// 常规验证码.
/// </summary>
public interface IGeneralCaptcha
{
    /// <summary>
    /// 创建验证码图片.
    /// </summary>
    /// <param name="timestamp">时间戳.</param>
    /// <param name="width">宽度.</param>
    /// <param name="height">高度.</param>
    /// <param name="length">长度.</param>
    /// <returns></returns>
    Task<byte[]> CreateCaptchaImage(string timestamp, int width, int height, int length = 4);
}