/// <summary>
/// 传入明文，返回用SHA1密后的字符串
/// </summary>
/// <param name="str">要加密的字符串</param>
/// <returns>SHA1加密后的字符串</returns>
public static string ToSHA1(string str)
{
return(MD5Helper.ToSHA1(str));
}
/// <summary>
/// 传入明文，返回用MD%加密后的字符串32位长度
/// </summary>
/// <param name="str">要加密的字符串</param>
/// <returns>用MD5加密后的字符串</returns>
public static string ToMD5(string str)
{
return(MD5Helper.ToMD5_32(str));
}