Rijndael Decryption not working

[KBS Developer]

Hi,

I can encrypt without any problem but while decrypting I got junk.
I've read the other thread about getting junk but that is not my case.

Here is the sample code:
private Rijndael GetKBSAlgorithm ()
{
Rijndael rijndaelAlgorit hm = Rijndael.Create ();
rijndaelAlgorit hm.IV = Convert.FromBas e64String(tbIV. Text);
rijndaelAlgorit hm.Key = Convert.FromBas e64String(tbKey .Text);
return rijndaelAlgorit hm;
}
private void bEncrypt_Click( object sender, EventArgs e)
{
Rijndael kbsAlogrithm = GetKBSAlgorithm ();
ICryptoTransfor m kbsTransformer =
kbsAlogrithm.Cr eateEncryptor() ;

Stream streamToConvert = ConvertStringIn toStream(tbPlai n.Text);
byte[] toConvertBytes = new byte[streamToConvert .Length];

CryptoStream kbsCryptoStream = new CryptoStream(st reamToConvert,
kbsTransformer, CryptoStreamMod e.Write);
kbsCryptoStream .Write(toConver tBytes, 0, toConvertBytes. Length);
kbsCryptoStream .FlushFinalBloc k();

byte[] convertedBytes = new byte[(int)streamToCo nvert.Length];
streamToConvert .Position = 0;
streamToConvert .Read(converted Bytes, 0,
(int)streamToCo nvert.Length);
kbsCryptoStream .Close();
streamToConvert .Close();

tbEncrypted.Tex t = Convert.ToBase6 4String(convert edBytes);
}
private void bDecrypt_Click( object sender, EventArgs e)
{
Rijndael kbsAlogrithm = GetKBSAlgorithm ();
ICryptoTransfor m kbsTransformer =
kbsAlogrithm.Cr eateDecryptor() ;

Stream streamToConvert = new
MemoryStream(Co nvert.FromBase6 4String(tbEncry pted.Text));
byte[] toConvertBytes =
Convert.FromBas e64String(tbEnc rypted.Text);
byte[] convertedBytes = new byte[toConvertBytes. Length];
int convertedByteCo unt;
CryptoStream kbsCryptoStream = new CryptoStream(st reamToConvert,
kbsTransformer, CryptoStreamMod e.Read);
convertedByteCo unt = kbsCryptoStream .Read(converted Bytes, 0,
convertedBytes. Length);
kbsCryptoStream .Close();
streamToConvert .Close();

tbDecrypted.Tex t = Convert.ToBase6 4String(convert edBytes);
}

Anyone has any clues?

[Alvin Bruney [ASP.NET MVP]]

I was trying to sift thru your code but there are undefined functions in
there and being the lazy kind, I wasn't motivated to write my own. Here is a
link that you can compare your code to.
http://www.obviex.com/samples/Encryption.aspx

--

Regards,
Alvin Bruney [MVP ASP.NET]

[Shameless Author plug]
The O.W.C. Black Book, 2nd Edition
Exclusively on www.lulu.com/owc $19.99
-------------------------------------------------------

"KBS Developer" <de*********@kb stours.comwrote in message
news:Og******** ******@TK2MSFTN GP03.phx.gbl...

Hi,

I can encrypt without any problem but while decrypting I got junk.
I've read the other thread about getting junk but that is not my case.

Here is the sample code:
private Rijndael GetKBSAlgorithm ()
{
Rijndael rijndaelAlgorit hm = Rijndael.Create ();
rijndaelAlgorit hm.IV = Convert.FromBas e64String(tbIV. Text);
rijndaelAlgorit hm.Key = Convert.FromBas e64String(tbKey .Text);
return rijndaelAlgorit hm;
}
private void bEncrypt_Click( object sender, EventArgs e)
{
Rijndael kbsAlogrithm = GetKBSAlgorithm ();
ICryptoTransfor m kbsTransformer =
kbsAlogrithm.Cr eateEncryptor() ;

Stream streamToConvert = ConvertStringIn toStream(tbPlai n.Text);
byte[] toConvertBytes = new byte[streamToConvert .Length];

CryptoStream kbsCryptoStream = new
CryptoStream(st reamToConvert, kbsTransformer, CryptoStreamMod e.Write);
kbsCryptoStream .Write(toConver tBytes, 0,
toConvertBytes. Length);
kbsCryptoStream .FlushFinalBloc k();

byte[] convertedBytes = new byte[(int)streamToCo nvert.Length];
streamToConvert .Position = 0;
streamToConvert .Read(converted Bytes, 0,
(int)streamToCo nvert.Length);
kbsCryptoStream .Close();
streamToConvert .Close();

tbEncrypted.Tex t = Convert.ToBase6 4String(convert edBytes);
}
private void bDecrypt_Click( object sender, EventArgs e)
{
Rijndael kbsAlogrithm = GetKBSAlgorithm ();
ICryptoTransfor m kbsTransformer =
kbsAlogrithm.Cr eateDecryptor() ;

Stream streamToConvert = new
MemoryStream(Co nvert.FromBase6 4String(tbEncry pted.Text));
byte[] toConvertBytes =
Convert.FromBas e64String(tbEnc rypted.Text);
byte[] convertedBytes = new byte[toConvertBytes. Length];
int convertedByteCo unt;
CryptoStream kbsCryptoStream = new
CryptoStream(st reamToConvert, kbsTransformer, CryptoStreamMod e.Read);
convertedByteCo unt = kbsCryptoStream .Read(converted Bytes, 0,
convertedBytes. Length);
kbsCryptoStream .Close();
streamToConvert .Close();

tbDecrypted.Tex t = Convert.ToBase6 4String(convert edBytes);
}

Anyone has any clues?

[Rene]

KBS,

Just as Alvin (the other poster), I looked at your code but unfortunately it
wouldn't compile and so I didn't bother going through it to see if I could
spot the problem.

If you want people to be able to help you, I would recommend you create a
sample (that compiles) that someone can easily copy and paste into a console
application.

Just my 2 cents.
"KBS Developer" <de*********@kb stours.comwrote in message
news:Og******** ******@TK2MSFTN GP03.phx.gbl...

Hi,

I can encrypt without any problem but while decrypting I got junk.
I've read the other thread about getting junk but that is not my case.

Here is the sample code:
private Rijndael GetKBSAlgorithm ()
{
Rijndael rijndaelAlgorit hm = Rijndael.Create ();
rijndaelAlgorit hm.IV = Convert.FromBas e64String(tbIV. Text);
rijndaelAlgorit hm.Key = Convert.FromBas e64String(tbKey .Text);
return rijndaelAlgorit hm;
}
private void bEncrypt_Click( object sender, EventArgs e)
{
Rijndael kbsAlogrithm = GetKBSAlgorithm ();
ICryptoTransfor m kbsTransformer =
kbsAlogrithm.Cr eateEncryptor() ;

Stream streamToConvert = ConvertStringIn toStream(tbPlai n.Text);
byte[] toConvertBytes = new byte[streamToConvert .Length];

CryptoStream kbsCryptoStream = new
CryptoStream(st reamToConvert, kbsTransformer, CryptoStreamMod e.Write);
kbsCryptoStream .Write(toConver tBytes, 0,
toConvertBytes. Length);
kbsCryptoStream .FlushFinalBloc k();

byte[] convertedBytes = new byte[(int)streamToCo nvert.Length];
streamToConvert .Position = 0;
streamToConvert .Read(converted Bytes, 0,
(int)streamToCo nvert.Length);
kbsCryptoStream .Close();
streamToConvert .Close();

tbEncrypted.Tex t = Convert.ToBase6 4String(convert edBytes);
}
private void bDecrypt_Click( object sender, EventArgs e)
{
Rijndael kbsAlogrithm = GetKBSAlgorithm ();
ICryptoTransfor m kbsTransformer =
kbsAlogrithm.Cr eateDecryptor() ;

Stream streamToConvert = new
MemoryStream(Co nvert.FromBase6 4String(tbEncry pted.Text));
byte[] toConvertBytes =
Convert.FromBas e64String(tbEnc rypted.Text);
byte[] convertedBytes = new byte[toConvertBytes. Length];
int convertedByteCo unt;
CryptoStream kbsCryptoStream = new
CryptoStream(st reamToConvert, kbsTransformer, CryptoStreamMod e.Read);
convertedByteCo unt = kbsCryptoStream .Read(converted Bytes, 0,
convertedBytes. Length);
kbsCryptoStream .Close();
streamToConvert .Close();

tbDecrypted.Tex t = Convert.ToBase6 4String(convert edBytes);
}

Anyone has any clues?

[Pedro Luna Montalvo]

As others said before, hard to tell you the problem bacause there's some
method missing, but it seems the problem is the encryption method.
Here's the fragment of your method i can't understand.

// This seems you write the text into a Stream
Stream streamToConvert = ConvertStringIn toStream(tbPlai n.Text);

// You create an array...where you fill this array???
byte[] toConvertBytes = new byte[streamToConvert .Length];

// You create the CryptoStream, but the encrypted output will be written
into the Stream with the text to encrypt????
CryptoStream kbsCryptoStream = new CryptoStream(st reamToConvert,
kbsTransformer, CryptoStreamMod e.Write);

// You write the content from the array....but what content?? It contains
only zeroes...
kbsCryptoStream .Write(toConver tBytes, 0, toConvertBytes. Length);
Instead of this, you should:
* convert the text to encrypt into bytes using some encoder from the
System.Text namespace. For example, Encoding.UTF8.G etBytes().
* for the constructor of CryptoStream, use a new and empty MemoryStream
object.
* after writing the encoded string (the bytes) into the CryptoStream, the
encrypted data can be extracted from the MemoryBuffer (method ToArray()).

Greetings,
"KBS Developer" <de*********@kb stours.comescri bió en el mensaje de
noticias:Og**** **********@TK2M SFTNGP03.phx.gb l...

Hi,

I can encrypt without any problem but while decrypting I got junk.
I've read the other thread about getting junk but that is not my case.

Here is the sample code:
private Rijndael GetKBSAlgorithm ()
{
Rijndael rijndaelAlgorit hm = Rijndael.Create ();
rijndaelAlgorit hm.IV = Convert.FromBas e64String(tbIV. Text);
rijndaelAlgorit hm.Key = Convert.FromBas e64String(tbKey .Text);
return rijndaelAlgorit hm;
}
private void bEncrypt_Click( object sender, EventArgs e)
{
Rijndael kbsAlogrithm = GetKBSAlgorithm ();
ICryptoTransfor m kbsTransformer =
kbsAlogrithm.Cr eateEncryptor() ;

Stream streamToConvert = ConvertStringIn toStream(tbPlai n.Text);
byte[] toConvertBytes = new byte[streamToConvert .Length];

CryptoStream kbsCryptoStream = new
CryptoStream(st reamToConvert, kbsTransformer, CryptoStreamMod e.Write);
kbsCryptoStream .Write(toConver tBytes, 0,
toConvertBytes. Length);
kbsCryptoStream .FlushFinalBloc k();

byte[] convertedBytes = new byte[(int)streamToCo nvert.Length];
streamToConvert .Position = 0;
streamToConvert .Read(converted Bytes, 0,
(int)streamToCo nvert.Length);
kbsCryptoStream .Close();
streamToConvert .Close();

tbEncrypted.Tex t = Convert.ToBase6 4String(convert edBytes);
}
private void bDecrypt_Click( object sender, EventArgs e)
{
Rijndael kbsAlogrithm = GetKBSAlgorithm ();
ICryptoTransfor m kbsTransformer =
kbsAlogrithm.Cr eateDecryptor() ;

Stream streamToConvert = new
MemoryStream(Co nvert.FromBase6 4String(tbEncry pted.Text));
byte[] toConvertBytes =
Convert.FromBas e64String(tbEnc rypted.Text);
byte[] convertedBytes = new byte[toConvertBytes. Length];
int convertedByteCo unt;
CryptoStream kbsCryptoStream = new
CryptoStream(st reamToConvert, kbsTransformer, CryptoStreamMod e.Read);
convertedByteCo unt = kbsCryptoStream .Read(converted Bytes, 0,
convertedBytes. Length);
kbsCryptoStream .Close();
streamToConvert .Close();

tbDecrypted.Tex t = Convert.ToBase6 4String(convert edBytes);
}

Anyone has any clues?