Asp Forum - licencing ? - microsoft.public.dotnet.framework.sdk

Lloyd Dupont

8/1/2003 12:28:00 AM

could someone explain em a bit how licensing work ?
I've been trying to read whatever I could in the doc about that but I was
not able to decyher it ;-(

3 Answers

Lloyd Dupont

8/4/2003 2:03:00 AM

well, obviously my question was not clear enough !
I have no worry about the .NET framework.
I want to licence MY work. I know that the .NET framework come with some
policy to licence code and ensure 3rd party use it only if they are allowed
to.

I found a sample using the LicLicenceProvider, although I understand the
principles and the VS.NET project worked well, I was unsuccessfull in doing
one small project of my own and compile it on the command line, therefore I
still get the impression I didn''t understand everything.

And I was wondering if some one could help me, by
- providing a short explanation/example ?
- send me a simple sample compilable with just a simple ''build.bat'' file ?

"Dino Chiesa [MSFT]" <dinoch@microsoft.com> wrote in message
news:eeJpXI9VDHA.2168@TK2MSFTNGP09.phx.gbl...
> What''s your question, specifically?
>
> In general, you should think of the .NET Runtime as a feature of windows.
> If you have a license for Windows, then you have the right to run apps
that
> use the .NET Framework. There is also the ability to redistribute the
..NET
> Runtime. The package is called the .NET Framework Redistributable. If
you
> are building apps, you can bundle in the .NET Runtime with your install.
>
> The .NET SDK is also free for use on Windows. any apps you build with the
> SDK are royalty free, as far as the .NET pieces go (license terms for
third
> party runtimes may vary).
>
> I am not a lawyer, but basically, .NET is a part of Windows and there is
no
> additional cost to developing with it, or running apps that use it.
>
> -Dino
> (Microsoft)
>
>
> "Lloyd Dupont" <lloyd@galador.net> wrote in message
> news:uTT0FP8VDHA.1780@TK2MSFTNGP11.phx.gbl...
> > could someone explain em a bit how licensing work ?
> > I''ve been trying to read whatever I could in the doc about that but I
was
> > not able to decyher it ;-(
> >
> >
>
>

Lloyd Dupont

8/7/2003 1:52:00 AM

Thanks, I will look at that !

"Dino Chiesa [MSFT]" <dinoch@microsoft.com> wrote in message
news:O6D2Wm4WDHA.384@TK2MSFTNGP12.phx.gbl...
> Whoa, sorry!
>
> have you looked at these? :
>
http://samples.gotdotnet.com/quickstart/winforms/doc/WinFormsCreatingControls.aspx#Licensing%...
>
>
http://www.fawcette.com/vsm/2003_03/magazine/columns/desktopdeveloper/defa...
>
> http://windowsforms.net/articles/Lice...
>
> and of course there is www.xheo.com (third party licensing add-on)
>
>
> "Lloyd Dupont" <lloyd@galador.net> wrote in message
> news:%23dWBRyiWDHA.2040@TK2MSFTNGP11.phx.gbl...
> > well, obviously my question was not clear enough !
> > I have no worry about the .NET framework.
> > I want to licence MY work. I know that the .NET framework come with some
> > policy to licence code and ensure 3rd party use it only if they are
> allowed
> > to.
> >
> > I found a sample using the LicLicenceProvider, although I understand the
> > principles and the VS.NET project worked well, I was unsuccessfull in
> doing
> > one small project of my own and compile it on the command line,
therefore
> I
> > still get the impression I didn''t understand everything.
> >
> > And I was wondering if some one could help me, by
> > - providing a short explanation/example ?
> > - send me a simple sample compilable with just a simple ''build.bat'' file
?
> >
> > "Dino Chiesa [MSFT]" <dinoch@microsoft.com> wrote in message
> > news:eeJpXI9VDHA.2168@TK2MSFTNGP09.phx.gbl...
> > > What''s your question, specifically?
> > >
> > > In general, you should think of the .NET Runtime as a feature of
> windows.
> > > If you have a license for Windows, then you have the right to run apps
> > that
> > > use the .NET Framework. There is also the ability to redistribute
the
> > .NET
> > > Runtime. The package is called the .NET Framework Redistributable.
If
> > you
> > > are building apps, you can bundle in the .NET Runtime with your
install.
> > >
> > > The .NET SDK is also free for use on Windows. any apps you build with
> the
> > > SDK are royalty free, as far as the .NET pieces go (license terms for
> > third
> > > party runtimes may vary).
> > >
> > > I am not a lawyer, but basically, .NET is a part of Windows and there
is
> > no
> > > additional cost to developing with it, or running apps that use it.
> > >
> > > -Dino
> > > (Microsoft)
> > >
> > >
> > > "Lloyd Dupont" <lloyd@galador.net> wrote in message
> > > news:uTT0FP8VDHA.1780@TK2MSFTNGP11.phx.gbl...
> > > > could someone explain em a bit how licensing work ?
> > > > I''ve been trying to read whatever I could in the doc about that but
I
> > was
> > > > not able to decyher it ;-(
> > > >
> > > >
> > >
> > >
> >
> >
>
>

Lloyd Dupont

8/7/2003 2:06:00 AM

hey ! you know it ! (I mean CsGL !) :-)
well it''s BSD licensed and visible since a while, I have no intention to
licence it in anyway.

It''s just I convince my boss to go to .NET and I want to licence our
products.
..NET has a nice licencing policy with some helpers class with different
policy at designe time (in VS.NET) and runtime, and it also work well with
no touch deployment, so I rather use it, but I''m about to understand it
thouroughly.

basically the library licence key should be embeded into the
executing/referencing assembly.
I could do it my self, but I would like to understand the licence compiler
and the other stuff before considering doing y own version.

I definitely not intend to buy when it''s effectively so simple to do ...

cheers mate,
It''s always a pleasure to be recognized !
where do you use CsGL ?

Lloyd

"Michael Lang" <m@l.com> wrote in message
news:ubY9I94WDHA.216@TK2MSFTNGP11.phx.gbl...
> I usually roll in my own licensing. I have a license dll file which has
> various licensing properties, and knows how to encrpt and decrpt a
license.
> I also have a licence generator which will create the license files given
> the license type and passphrase which is used as the initialization vector
> (IV) in the encryption. It must be the same passphrase the application
uses
> as it''s IV to decrpt the license file. Any application EXE or DLL i want
to
> license I make reference the same License dll that the generator does. It
> passes in the license file and the application specific passphrase to
decrpt
> the license information.
>
> It really isn''t that hard, it''s just a few calls to the Crptography
> namespace. My entire Licensing DLL contains one class with just under 500
> lines of code. The generator is a single form with just under 600 lines
of
> code. The Encryption/Decryption is the important part...
>
> Why pay for licensing software, when it is so easy to make your own?
> =========================================================
> public class License
> {
> ...excerpt from my class ...
> #region "Encryption"
> public void GenerateKey(string passPhrase)
> {
> //may want to change how you create your key and IV?
> // They are the most important part to the secuity of your licenses.
> _key = new Byte[24];
> _iv = new Byte[16];
>
> byte[] bytePhrase = Encoding.ASCII.GetBytes(passPhrase);
> SHA384Managed sha384 = new SHA384Managed();
> sha384.ComputeHash(bytePhrase);
> byte[] result = sha384.Hash;
>
> for( int loop=0; loop<24; loop++ ) _key[loop] = result[loop];
> for( int loop=24; loop<40; loop++ ) _iv[loop-24] = result[loop];
> }
> /// <summary>
> /// Encrypt the given value with the Rijndael algorithm.
> /// </summary>
> /// <param name="encryptValue">Value to encrypt</param>
> /// <returns>Encrypted value. </returns>
> private string Encrypt(string encryptValue)
> {
> CryptoStream encryptStream = null; // Stream used to encrypt
> RijndaelManaged rijndael = null; // Rijndael provider
> ICryptoTransform rijndaelEncrypt = null; // Encrypting object
> MemoryStream memStream = new MemoryStream(); // Stream to contain data
> try
> {
> if( encryptValue.Length > 0 )
> {
> // Create the crypto objects
> rijndael = new RijndaelManaged();
> rijndael.Key = _key;
> rijndael.IV = _iv;
> rijndaelEncrypt = rijndael.CreateEncryptor();
> encryptStream = new CryptoStream(
> memStream, rijndaelEncrypt, CryptoStreamMode.Write);
>
> // Write the encrypted value into memory
> byte[] input = new UnicodeEncoding().GetBytes(encryptValue);
> encryptStream.Write(input, 0, input.Length);
> encryptStream.FlushFinalBlock();
>
> // Retrieve the encrypted value and return it
> return( Convert.ToBase64String(memStream.ToArray()) );
> }
> else
> {
> return "";
> }
> }
> catch (Exception ex)
> {
> throw new ApplicationException("Could not excrypt license.", ex);
> }
> finally
> {
> if( rijndael != null ) rijndael.Clear();
> if( rijndaelEncrypt != null ) rijndaelEncrypt.Dispose();
> if( memStream != null ) memStream.Close();
> }
> }
> private string Decrypt(string decryptValue)
> {
> CryptoStream decryptStream = null; // Stream used to decrypt
> RijndaelManaged rijndael = null; // Rijndael provider
> ICryptoTransform rijndaelDecrypt = null; // Decrypting object
> MemoryStream memStream = new MemoryStream(); // Stream to contain data
> MemoryStream memCypherStream = null;
> try
> {
> if( decryptValue.Length > 0 )
> {
> // Create the crypto objects
> rijndael = new RijndaelManaged();
> rijndael.Key = _key;
> rijndael.IV = _iv;
> rijndaelDecrypt = rijndael.CreateDecryptor();
>
> memCypherStream = new
> MemoryStream(Convert.FromBase64String(decryptValue));
> decryptStream = new CryptoStream(memCypherStream,
> rijndaelDecrypt, CryptoStreamMode.Read);
>
> do
> {
> Byte[] buf = new byte[100];
> int actualBytesRead = decryptStream.Read(buf,0,100);
> if (0 == actualBytesRead){break;}
> memStream.Write(buf,0,actualBytesRead);
> }while(true);
>
> return new UnicodeEncoding().GetString(memStream.ToArray());
> }
> else
> {
> return "";
> }
> }
> catch (Exception ex)
> {
> throw new ApplicationException("Could not decrypt license.", ex);
> }
> finally
> {
> if( rijndael != null ) rijndael.Clear();
> if( rijndaelDecrypt != null ) rijndaelDecrypt.Dispose();
> if( memStream != null ) memStream.Close();
> if( memCypherStream != null) memCypherStream.Close();
> }
> }
> #endregion
> ...
> }
> =========================================================
>
> By the way Lloyd, I like your C# openGL project. Is that what you are
going
> to license?
> --
> Michael Lang, MCSD
> See my .NET open source projects
> http://sourceforge.net/projects/...
> http://sourceforge.net/projects...
>
> "Lloyd Dupont" <lloyd@galador.net> wrote in message
> news:%23dWBRyiWDHA.2040@TK2MSFTNGP11.phx.gbl...
> > well, obviously my question was not clear enough !
> > I have no worry about the .NET framework.
> > I want to licence MY work. I know that the .NET framework come with some
> > policy to licence code and ensure 3rd party use it only if they are
> allowed
> > to.
> >
> > I found a sample using the LicLicenceProvider, although I understand the
> > principles and the VS.NET project worked well, I was unsuccessfull in
> doing
> > one small project of my own and compile it on the command line,
therefore
> I
> > still get the impression I didn''t understand everything.
> >
> > And I was wondering if some one could help me, by
> > - providing a short explanation/example ?
> > - send me a simple sample compilable with just a simple ''build.bat'' file
?
> >
> > "Dino Chiesa [MSFT]" <dinoch@microsoft.com> wrote in message
> > news:eeJpXI9VDHA.2168@TK2MSFTNGP09.phx.gbl...
> > > What''s your question, specifically?
> > >
> > > In general, you should think of the .NET Runtime as a feature of
> windows.
> > > If you have a license for Windows, then you have the right to run apps
> > that
> > > use the .NET Framework. There is also the ability to redistribute
the
> > .NET
> > > Runtime. The package is called the .NET Framework Redistributable.
If
> > you
> > > are building apps, you can bundle in the .NET Runtime with your
install.
> > >
> > > The .NET SDK is also free for use on Windows. any apps you build with
> the
> > > SDK are royalty free, as far as the .NET pieces go (license terms for
> > third
> > > party runtimes may vary).
> > >
> > > I am not a lawyer, but basically, .NET is a part of Windows and there
is
> > no
> > > additional cost to developing with it, or running apps that use it.
> > >
> > > -Dino
> > > (Microsoft)
> > >
> > >
> > > "Lloyd Dupont" <lloyd@galador.net> wrote in message
> > > news:uTT0FP8VDHA.1780@TK2MSFTNGP11.phx.gbl...
> > > > could someone explain em a bit how licensing work ?
> > > > I''ve been trying to read whatever I could in the doc about that but
I
> > was
> > > > not able to decyher it ;-(
> > > >
> > > >
> > >
> > >
> >
> >
>
>

microsoft.public.dotnet.framework.sdk

licencing ?

Lloyd Dupont

Lloyd Dupont

Lloyd Dupont

Lloyd Dupont

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