I'm sure lots of people are using Skype, but not many people really understand how it works.
There's an excellent PDF (or HTML for the PDF disinclined) on the operation of the protocol.
To give you the quick jist of it, Skype was developed by KaZaA and uses what's essentially a modified version of the FastTrack network. Run Skype on a system with lots of bandwidth and an external IP, and you'll be promoted to a SuperNode and route calls for other people.
(And now we get to why this is in Computer Security)
So, because your calls are routed through others, in order to prevent snooping (and just a good idea in general) Skype uses strong cryptography on all calls, private messages, file transfers, etc. And by strong, I mean 2048-bit RSA and 256-bit AES. So you can be fairly confident that all voice calls, private messages, and file transfers are fairly safe from interception. The best part is that the encryption is all seamless.
So, if you aren't using Skype by now, get it and chat securely...
There's an excellent PDF (or HTML for the PDF disinclined) on the operation of the protocol.
To give you the quick jist of it, Skype was developed by KaZaA and uses what's essentially a modified version of the FastTrack network. Run Skype on a system with lots of bandwidth and an external IP, and you'll be promoted to a SuperNode and route calls for other people.
(And now we get to why this is in Computer Security)
So, because your calls are routed through others, in order to prevent snooping (and just a good idea in general) Skype uses strong cryptography on all calls, private messages, file transfers, etc. And by strong, I mean 2048-bit RSA and 256-bit AES. So you can be fairly confident that all voice calls, private messages, and file transfers are fairly safe from interception. The best part is that the encryption is all seamless.
So, if you aren't using Skype by now, get it and chat securely...
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