voice encryption

I want to develop an application to encrypt voice calls on the fly. Is it feasible? which pro开发者_如何学Gogramming language should be preferred for symbian O.S

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It has already been done: http://en.wikipedia.org/wiki/Skype_security

To implement it, you would need a fast language (a delay of no more than maybe 10 milliseconds, because you still have network latency to deal with) so something like C or C++, maybe Java when used with JIT. Check out Java SE Security Package for simple SSL connections.

Of course, the easy way to do this would just be an ssh or VPN tunnel.