Encrypt data sent/read with Indy 10

Hi,

I want to encrypt all the data sent between a client (TIdTCPClient) and a server (TIdTCPserver) with a basic algorithm (I thought to use something like blowfish or rjindael but my knowledge of the cryptography is very basic...). What is the best way to do that ?

My first idea was to create a custom IOHandler and implement here all the cryptographic stuff. But by searching how to do that with Google I found old messages which speaks about a component called TIdBlockCipherIntercept. It comes from an old Indy version (I use Indy 10) or I'm wrong ? I suppose it can no longer be used with Indy 10 ?

Any hints about how doing that greatly appreciated :-)

Best Regards,

A.R.