验证C#中针对Active Directory的密码复杂性

Question

我正在编写安装SQL的安装程序,事先提示用户输入将为其创建的SA用户名/密码.安装SQL时,它会根据Active Directory策略验证此密码,如果不匹配则会失败.

我想要做的是在继续安装SQL之前验证用户输入的密码是否有效.

如何根据Active Directory规则验证密码是否正确？

注意我没有登录来验证这个答案,而只是验证密码.

我目前正在尝试这个,但是我知道不允许写"密码"不会引发异常

try
{
    System.DirectoryServices.DirectoryEntry localMachine = new System.DirectoryServices.DirectoryEntry("WinNT://" + Environment.MachineName);
    ListPasswordPolicyInfo(Environment.MachineName);
    System.DirectoryServices.DirectoryEntry newUser = localMachine.Children.Add("localuser", "user");
    newUser.Invoke("SetPassword", new object[] { "3l!teP@$$w0RDz" });
    newUser.Invoke("SetPassword", new object[] { "password" });
    //newUser.CommitChanges();
    //Console.WriteLine(newUser.Guid.ToString());
    localMachine.Close();
    newUser.Close();
}
catch(Exception e)
{
    Console.WriteLine(e.Message);
}

Answer 1

经过很多痛苦后,我找到了使用C#的解决方案NetValidatePasswordPolicy.使用PInvoke的支持结构和以下代码

public static NET_API_STATUS ValidatePassword(string password)
{
    var outputArgs = new NET_VALIDATE_OUTPUT_ARG();
    var inputArgs = new NET_VALIDATE_PASSWORD_CHANGE_INPUT_ARG();

    IntPtr inputPointer = IntPtr.Zero;
    IntPtr outputPointer = IntPtr.Zero;

    try
    {
        inputArgs.PasswordMatched = true;
        inputArgs.ClearPassword = Marshal.StringToBSTR(password);

        // If using a secure string
        ////inputArgs.ClearPassword = Marshal.SecureStringToBSTR(secureStringPassword);

        inputPointer = Marshal.AllocHGlobal(Marshal.SizeOf(inputArgs));
        Marshal.StructureToPtr(inputArgs, inputPointer, false);

        NET_API_STATUS status = NetValidatePasswordPolicy(System.Environment.MachineName, IntPtr.Zero, NET_VALIDATE_PASSWORD_TYPE.NetValidatePasswordChange, inputPointer, ref outputPointer);

        if (status == NET_API_STATUS.NERR_Success)
        {
            outputArgs = (NET_VALIDATE_OUTPUT_ARG)Marshal.PtrToStructure(outputPointer, typeof(NET_VALIDATE_OUTPUT_ARG));

            if (outputArgs.ValidationStatus == NET_API_STATUS.NERR_Success)
            {
                // Ok
            }

            return outputArgs.ValidationStatus;
        }
        else
        {
            return status;
        }
    }
    finally
    {
        if (outputPointer != IntPtr.Zero)
        {
            NetValidatePasswordPolicyFree(ref outputPointer);
        }

        if (inputArgs.ClearPassword != IntPtr.Zero)
        {
            Marshal.ZeroFreeBSTR(inputArgs.ClearPassword);
        }

        if (inputPointer != IntPtr.Zero)
        {
            Marshal.FreeHGlobal(inputPointer);
        }
    }
}