Re: DES Algorithm (RC4 Encryption)

From: Shawn Farkas [MS] (shawnfa@online.microsoft.com)
Date: 10/25/02 

From: "Shawn Farkas [MS]" <shawnfa@online.microsoft.com>
Date: Fri, 25 Oct 2002 10:46:56 -0700

Hi Bill,

    RC4 does not work with PasswordDeriveBytes because it is not an
algorithm supported by the .Net Framework at this time. Sorry.

-Shawn 

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"Bill Chan" <billchans@hotmail.com> wrote in message
news:ODbVcW9eCHA.1956@tkmsftngp10...
> Hi Shawn,
>
> Thanks for your suggestion. Actually, I have written some codes byusing
the
> System.Security.Cryptography class. But there is no "RC4" in  the
> cryptographic algorithms:
>
> TripleDESCryptoServiceProvider des = new TripleDESCryptoServiceProvider();
> des.IV = new byte[8];
> PasswordDeriveBytes pdb = new PasswordDeriveBytes(password, new byte[0]);
>
> When I try to create the object DES.key
> des.Key = pdb.CryptDeriveKey("RC4", "MD5" 128, des.IV);
>
> It throw the exception at this line that algorithm is not supported but
> there is no problem if replacing RC4 by RC2.
>
> Do you have any idea?  Thank you.
>
> Best Regards,
> Bill
>
> "Shawn Farkas [MS]" <shawnfa@online.microsoft.com> wrote in message
> news:OM#2vi4eCHA.3752@tkmsftngp08...
> > Hi Bill,
> >
> >     In the System.Security.Cryptography namespace you'll find classes
that
> > implement the following cryptographic algorithms:
> >
> > * DES
> > * RC2
> > * Rijndael
> > * TripleDES
> > * DSA
> > * RSA
> >
> > And the following hashes:
> >
> > * HMACSHA1
> > * MACTripleDES
> > * MD5
> > * SHA1
> > * SHA256
> > * SHA384
> > * SHA512
> >
> > -Shawn
> >
> > --
> > This posting is provided "AS IS" with no warranties, and confers no
> rights.
> > Please do not send email directly to this alias, this alias is for
> newsgroup
> > purposes only.
> >
> >
> > "Bill Chan" <billchans@hotmail.com> wrote in message
> > news:#kcSV$yeCHA.2664@tkmsftngp12...
> > > Hi everyone,
> > >
> > > I would like to know whether .NET framework provides any class for RC4
> > > encryption.  Any suggestions would be greatly appreciated.
> > >
> > >
> > > Best Regards,
> > > Bill
> > >
> > >
> >
> >
>
>

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