Can I de-crypt the data by java which is crypt by DESCryptoServiceProvider?

The following is my code to crypt data:
string text = "This is My source data";
byte[] source = System.Text.Encoding.Unicode.GetBytes(text);

DESCryptoServiceProvider des = new DESCryptoServiceProvider();
des.Key = this.key;
des.IV = this.iv;

ICryptoTransform desencrypt = des.CreateEncryptor();
System.IO.MemoryStream ms = new System.IO.MemoryStream();
CryptoStream cryptostream = new
CryptoStream(ms,desencrypt,CryptoStreamMode.Write);

cryptostream.Write(source, 0, source.Length);

byte[] result = ms.ToArray();
cryptostream.Close();
ms.Close();

And then, I will send the release data(result) to other host via http
connection. And the remote host platform is java. Could the java platform
decrypt the data I sent to?

Thanks!

wolf <(E-Mail Removed)> wrote:
> Can I de-crypt the data by java which is crypt by
> DESCryptoServiceProvider?

Yes, you should be able to.

> The following is my code to crypt data:
> string text = "This is My source data";
> byte[] source = System.Text.Encoding.Unicode.GetBytes(text);
>
> DESCryptoServiceProvider des = new DESCryptoServiceProvider();
> des.Key = this.key;
> des.IV = this.iv;
>
> ICryptoTransform desencrypt = des.CreateEncryptor();
> System.IO.MemoryStream ms = new System.IO.MemoryStream();
> CryptoStream cryptostream = new
> CryptoStream(ms,desencrypt,CryptoStreamMode.Write);
>
> cryptostream.Write(source, 0, source.Length);
>
> byte[] result = ms.ToArray();
> cryptostream.Close();
> ms.Close();

You've got a problem here - you're not calling
cryptoStream.FlushFinalBlock or Close before you're calling ms.ToArray.
I'd suggest calling cryptoStream.Close, then ms.Close if you want to
(you don't need to) and then ms.ToArray.

> And then, I will send the release data(result) to other host via http
> connection. And the remote host platform is java. Could the java platform
> decrypt the data I sent to?

That should be fine, yes.

--
Jon Skeet - <(E-Mail Removed)>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too

> > And then, I will send the release data(result) to other host via http
> > connection. And the remote host platform is java. Could the java
platform
> > decrypt the data I sent to?
>
> That should be fine, yes.
>

Thank you for your replay!
But my goal is to decrypt these code in java. The java lib had provide some
classes for decription, but I can set the key parameter only, the IV
parameter is readonly and it's default value is null!

Thank you!

wolf <(E-Mail Removed)> wrote:
> > > And then, I will send the release data(result) to other host via http
> > > connection. And the remote host platform is java. Could the java
> platform
> > > decrypt the data I sent to?
> >
> > That should be fine, yes.
>
> Thank you for your replay!
> But my goal is to decrypt these code in java. The java lib had provide some
> classes for decription, but I can set the key parameter only, the IV
> parameter is readonly and it's default value is null!

It sounds like this is really a Java question rather than a .NET
question then. I suggest you ask on one of the Java newsgroups, such as
comp.lang.java.programmer.

I suspect the
Cipher.init(int opmode, Key key, AlgorithmParameters params)
method is what you're after though.

--
Jon Skeet - <(E-Mail Removed)>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too