I am trying to find a way to secure my information coming from my database to my flex RIA and back. Can anyone point me in the right direction. Most of the ideas i've tried have not worked. Any ideas would be great.
HTTPS (HTTP over SSL) is your best bet. if you try to do any sort of decryption on the client, it can be eventually broken unless you implement something akin to what is being done in SSL.
Curious to know what other ideas you've attempted?