It's not that simple, unfortunately. If you re-use the key, then you lose that security (the hacker can simply think of a large number of messages as a single large message with a key shorter than the message, at which point you're back where you started); and if you don't re-use the key, you have the problem of getting the new key to the client device securely.

In reply to Re^3: Encryption using perl core functions only by Porculus
in thread Encryption using perl core functions only by redhotpenguin

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