For paranoiac
Fractionate your information stream
Everybody will tell you that it’s good practice to change your password periodically. It’s definitely true. Any computer user must do it. Here I’ll say a thing that must be done by paranoiac.
Take a stream of information that you create over year. Take note that the stream isn’t continuous but partitioned like a stream of email messages sent over time. If you encrypt the stream with a public-key encryption algorithm; you’ll be able to aggregate many message from different sources. The thing is that if you don’t change you public/private keys, anybody who discovers your private key will be able to access your entire stream over time if he logged it. This is a real problem if such a thing append. It’s why the concept of information partitioning is important. You only need to change you keys each n day and if your attacker find your current private key he’ll not have access to the whole stream of information. It’s a way to add security within the security provided by the cryptosystem.
As I said, it’s for paranoiac only. It’s just a little thought that come up in my mind today, enjoy it.
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