Hello,

if I have an Xml-File on the "normal" PC, which is encrypted by the
following method:

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button1.Click
'Encrypt the data set and write it to file.
Dim aXmlTextWriter As Xml.XmlTextWriter

aXmlTextWriter = New XmlTextWriter("myXML.xml", Encoding.UTF8)

Dim aUE As New UnicodeEncoding()
Dim key() As Byte = aUE.GetBytes("password")
Dim RMCrypto As RijndaelManaged = New RijndaelManaged()
Dim aCryptoStream As New CryptoStream(aXmlTextWriter.BaseStream, _
RMCrypto.CreateEncryptor(key, key), CryptoStreamMode.Write)

ds.WriteXml(aCryptoStream)
aCryptoStream.Close()

'Clear the dataset so we can see that it is empty before
'we decrypt the encrypted file.
ds.Clear()
End Sub

See Source on
http://www.experts-exchange.com/Prog..._20598364.html

how could I decrypt this file on the Pocket PC? I need to open an encrypted
xml file on PPC, it also could be encrypted with a different method. I need
to load the xml file into a dataset.

Thanks for your help

Thomas

Take a look at SDF which supports quite a few assymetrical algorithms - RSA,
MD5, SHA1 etc..

--
Alex Yakhnin, .NET CF MVP
www.intelliprog.com
www.opennetcf.org
My blog: http://blog.opennetcf.org/ayakhnin


"Dalli" wrote:

> Hello,
>
> if I have an Xml-File on the "normal" PC, which is encrypted by the
> following method:
>
> Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
> System.EventArgs) Handles Button1.Click
> 'Encrypt the data set and write it to file.
> Dim aXmlTextWriter As Xml.XmlTextWriter
>
> aXmlTextWriter = New XmlTextWriter("myXML.xml", Encoding.UTF8)
>
> Dim aUE As New UnicodeEncoding()
> Dim key() As Byte = aUE.GetBytes("password")
> Dim RMCrypto As RijndaelManaged = New RijndaelManaged()
> Dim aCryptoStream As New CryptoStream(aXmlTextWriter.BaseStream, _
> RMCrypto.CreateEncryptor(key, key), CryptoStreamMode.Write)
>
> ds.WriteXml(aCryptoStream)
> aCryptoStream.Close()
>
> 'Clear the dataset so we can see that it is empty before
> 'we decrypt the encrypted file.
> ds.Clear()
> End Sub
>
> See Source on
> http://www.experts-exchange.com/Prog..._20598364.html
>
> how could I decrypt this file on the Pocket PC? I need to open an encrypted
> xml file on PPC, it also could be encrypted with a different method. I need
> to load the xml file into a dataset.
>
> Thanks for your help
>
> Thomas
>
>
>
>

Are there examples how to encrypt / decrypt a whole file and read it with
the xmlreader?

Thomas

"Alex Yakhnin [MVP]" <(E-Mail Removed)> schrieb im Newsbeitrag
news:CCB6A6C6-06F1-4F0F-AE68-(E-Mail Removed)...
> Take a look at SDF which supports quite a few assymetrical algorithms -
RSA,
> MD5, SHA1 etc..
>
> --
> Alex Yakhnin, .NET CF MVP
> www.intelliprog.com
> www.opennetcf.org
> My blog: http://blog.opennetcf.org/ayakhnin
>
>
> "Dalli" wrote:
>
> > Hello,
> >
> > if I have an Xml-File on the "normal" PC, which is encrypted by the
> > following method:
> >
> > Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
> > System.EventArgs) Handles Button1.Click
> > 'Encrypt the data set and write it to file.
> > Dim aXmlTextWriter As Xml.XmlTextWriter
> >
> > aXmlTextWriter = New XmlTextWriter("myXML.xml", Encoding.UTF8)
> >
> > Dim aUE As New UnicodeEncoding()
> > Dim key() As Byte = aUE.GetBytes("password")
> > Dim RMCrypto As RijndaelManaged = New RijndaelManaged()
> > Dim aCryptoStream As New CryptoStream(aXmlTextWriter.BaseStream,
_
> > RMCrypto.CreateEncryptor(key, key), CryptoStreamMode.Write)
> >
> > ds.WriteXml(aCryptoStream)
> > aCryptoStream.Close()
> >
> > 'Clear the dataset so we can see that it is empty before
> > 'we decrypt the encrypted file.
> > ds.Clear()
> > End Sub
> >
> > See Source on
> >
http://www.experts-exchange.com/Prog..._20598364.html
> >
> > how could I decrypt this file on the Pocket PC? I need to open an
encrypted
> > xml file on PPC, it also could be encrypted with a different method. I
need
> > to load the xml file into a dataset.
> >
> > Thanks for your help
> >
> > Thomas
> >
> >
> >
> >

Tak a look at this article in the MSDN docs:

ms-help://MS.MSDNQTR.2004JUL.1033/dnnetsec/html/cryptosimplified.htm

or online:

http://msdn.microsoft.com/library/de...simplified.asp

--
Alex Yakhnin, .NET CF MVP
www.intelliprog.com
www.opennetcf.org
My blog: http://blog.opennetcf.org/ayakhnin

"Dalli" wrote:

> Are there examples how to encrypt / decrypt a whole file and read it with
> the xmlreader?
>
> Thomas
>
> "Alex Yakhnin [MVP]" <(E-Mail Removed)> schrieb im Newsbeitrag
> news:CCB6A6C6-06F1-4F0F-AE68-(E-Mail Removed)...
> > Take a look at SDF which supports quite a few assymetrical algorithms -
> RSA,
> > MD5, SHA1 etc..
> >
> > --
> > Alex Yakhnin, .NET CF MVP
> > www.intelliprog.com
> > www.opennetcf.org
> > My blog: http://blog.opennetcf.org/ayakhnin
> >
> >
> > "Dalli" wrote:
> >
> > > Hello,
> > >
> > > if I have an Xml-File on the "normal" PC, which is encrypted by the
> > > following method:
> > >
> > > Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
> > > System.EventArgs) Handles Button1.Click
> > > 'Encrypt the data set and write it to file.
> > > Dim aXmlTextWriter As Xml.XmlTextWriter
> > >
> > > aXmlTextWriter = New XmlTextWriter("myXML.xml", Encoding.UTF8)
> > >
> > > Dim aUE As New UnicodeEncoding()
> > > Dim key() As Byte = aUE.GetBytes("password")
> > > Dim RMCrypto As RijndaelManaged = New RijndaelManaged()
> > > Dim aCryptoStream As New CryptoStream(aXmlTextWriter.BaseStream,
> _
> > > RMCrypto.CreateEncryptor(key, key), CryptoStreamMode.Write)
> > >
> > > ds.WriteXml(aCryptoStream)
> > > aCryptoStream.Close()
> > >
> > > 'Clear the dataset so we can see that it is empty before
> > > 'we decrypt the encrypted file.
> > > ds.Clear()
> > > End Sub
> > >
> > > See Source on
> > >
> http://www.experts-exchange.com/Prog..._20598364.html
> > >
> > > how could I decrypt this file on the Pocket PC? I need to open an
> encrypted
> > > xml file on PPC, it also could be encrypted with a different method. I
> need
> > > to load the xml file into a dataset.
> > >
> > > Thanks for your help
> > >
> > > Thomas
> > >
> > >
> > >
> > >
>
>
>

Thanks I will take a look


"Alex Yakhnin [MVP]" <(E-Mail Removed)> schrieb im Newsbeitrag
news:2A25A9A6-36A4-4CD4-ADA6-(E-Mail Removed)...
> Tak a look at this article in the MSDN docs:
>
> ms-help://MS.MSDNQTR.2004JUL.1033/dnnetsec/html/cryptosimplified.htm
>
> or online:
>
>
http://msdn.microsoft.com/library/de...simplified.asp
>
> --
> Alex Yakhnin, .NET CF MVP
> www.intelliprog.com
> www.opennetcf.org
> My blog: http://blog.opennetcf.org/ayakhnin
>
> "Dalli" wrote:
>
> > Are there examples how to encrypt / decrypt a whole file and read it
with
> > the xmlreader?
> >
> > Thomas
> >
> > "Alex Yakhnin [MVP]" <(E-Mail Removed)> schrieb im Newsbeitrag
> > news:CCB6A6C6-06F1-4F0F-AE68-(E-Mail Removed)...
> > > Take a look at SDF which supports quite a few assymetrical
algorithms -
> > RSA,
> > > MD5, SHA1 etc..
> > >
> > > --
> > > Alex Yakhnin, .NET CF MVP
> > > www.intelliprog.com
> > > www.opennetcf.org
> > > My blog: http://blog.opennetcf.org/ayakhnin
> > >
> > >
> > > "Dalli" wrote:
> > >
> > > > Hello,
> > > >
> > > > if I have an Xml-File on the "normal" PC, which is encrypted by the
> > > > following method:
> > > >
> > > > Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
> > > > System.EventArgs) Handles Button1.Click
> > > > 'Encrypt the data set and write it to file.
> > > > Dim aXmlTextWriter As Xml.XmlTextWriter
> > > >
> > > > aXmlTextWriter = New XmlTextWriter("myXML.xml",
Encoding.UTF8)
> > > >
> > > > Dim aUE As New UnicodeEncoding()
> > > > Dim key() As Byte = aUE.GetBytes("password")
> > > > Dim RMCrypto As RijndaelManaged = New RijndaelManaged()
> > > > Dim aCryptoStream As New
CryptoStream(aXmlTextWriter.BaseStream,
> > _
> > > > RMCrypto.CreateEncryptor(key, key), CryptoStreamMode.Write)
> > > >
> > > > ds.WriteXml(aCryptoStream)
> > > > aCryptoStream.Close()
> > > >
> > > > 'Clear the dataset so we can see that it is empty before
> > > > 'we decrypt the encrypted file.
> > > > ds.Clear()
> > > > End Sub
> > > >
> > > > See Source on
> > > >
> >
http://www.experts-exchange.com/Prog..._20598364.html
> > > >
> > > > how could I decrypt this file on the Pocket PC? I need to open an
> > encrypted
> > > > xml file on PPC, it also could be encrypted with a different method.
I
> > need
> > > > to load the xml file into a dataset.
> > > >
> > > > Thanks for your help
> > > >
> > > > Thomas
> > > >
> > > >
> > > >
> > > >
> >
> >
> >