gony / ooxmlcrypto Goto Github PK

Example code for:

 * Create new package
   * Save as encrypted (password protected)
   * Save as plain text
 * Open existing package
   * Plaintext
   * Password-protected  
 * Save As (just copy the file, open the copy) 
 * UI code to open the file / show the password dialog if needed (loop to 
keep checking).

Consider addin support for Agile Encryption which utilises XML stream rather 
than binary.

I have already done some development on this and am able to read the 
EncryptionInfo data using Agile Encryption but am having trouble generating 
encryption key for validation as the process varies from the Standard 
Encryption mechanism.

Current release breaks with out of memory exception but according to Crypto 
spec, when EncryptionInfo version is 4.4, it should be treated as Agile (XML) 
and not binary. It appears that Office 2010 docs use Agile by default which 
2007 did not.

Let me know if you'd like to see this code.

Add a dialog box / API for opening the file.

API should be along the lines of:
{{{
public class PasswordDialog
{
    public static OfficeCryptoStream OpenStream(String file)
}
}}}

Try to open the steam as plaintext first. If unsuccessful, show the password 
dialog until success or Cancel of the operation (returning null).