Hi I_vj,
It’s possible to achieve your goal. Please refer to the following link to see the code example.
http://stackoverflow.com/questions/11281350/encrypt-string-in-winrt-c-sharp-and-decrypt-it-in-c-sharp-net/11334311#11334311. But this approach seems a bit complex, it’s recommend that use RESTful service in your windows azure, it provides both encryption
and decryption services to store app and windows phone app, then we can manage the whole security process on the service and it’s no need to transfer public or private key on the internet.
Please feel free to let me know if you have any concerns.
Regards,
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