encryption of a dataset

  • Thread starter Thread starter Mike Peretz
  • Start date Start date
M

Mike Peretz

I am trying to encrypt and decrypts a dataset using ds.WriteXml and
ds.ReadXml. I am able to encrypt the dataset but I can never read the data
back...I get an exception of Bad Data

for example, for writing there seems to be no problem...

using (IsolatedStorageFileStream storeStream = new
IsolatedStorageFileStream("reg.xml",
FileMode.Create,
FileAccess.ReadWrite,
FileShare.Read,
m_storeFile))
{
using (CryptoStream cryptStream = new CryptoStream(storeStream,
m_encryptor, CryptoStreamMode.Write))
{
m_dsRegistration.WriteXml(cryptStream, XmlWriteMode.WriteSchema);
}
}



for reading...

using (IsolatedStorageFileStream storeStream = new
IsolatedStorageFileStream("reg.xml",
FileMode.Open,
FileAccess.ReadWrite,
FileShare.Read,
m_storeFile))
{

using (CryptoStream cryptStream = new CryptoStream(storeStream,
m_decryptor, CryptoStreamMode.Read))
{
// load the data with the schema. After this line we should have all
our
// registration information.

m_dsRegistration.ReadXml(cryptStream, XmlReadMode.ReadSchema);

}
}
}

However... cryptStream.Read(...) works does not cause an exception.

Any ideas?
 
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