Encrypt/Decrypt data while exporting and importing

Hi,
 I have a VB.NET desktop application. Now I have to have a feature wherein the user will export the data and import it back on another PC. Both the PCs are not connected as both are at remote places and therefore the need to export the data at one end and import at second end.

Now what I need is that when the data is exported to text file, it should be encrypted with atleast minimum of 256 bit encryption and then decrypt it while reading during import.

Any solution?

Regards,
mi
vj_miAsked:
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DhaestConnect With a Mentor Commented:
Some starting points:
Rijndael Encryption in VB.NET
http://www.freevbcode.com/ShowCode.asp?ID=4520

Encrypt/Decrypt Files in VB.NET (Using Rijndael)
http://www.codeproject.com/KB/security/EncryptFile.aspx

How To: Encrypt and Decrypt Data Using a Symmetric (Rijndael) Key (C#/VB.NET)
http://www.obviex.com/samples/Encryption.aspx
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