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1

Since hashing algorithms don't use keys would the best strategy be to pick Blowish or SHA512 and salt using the key? With HMAC you can use secret key to generate hash for sensitive data. I need to provide a key so that a single input is represented different across different reporting platforms, time periods Use different key for each different ...


2

tl;dr– It's not generally reversible, but it might still be reversed in practice. Analogy: Reversibility of reducing a name to its length. Consider a reduction method that takes in a person's first name and gives the number of letters in it. For example, "Alice" is transformed into 5. This is a lossful process, so it can't be generally reversed. ...


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The trick is that it's the payload of the packet that's encapsulated, not the whole TCP packet. Therefore, when the packet leaves the tor exit node unencrypted, it is sent with the return address of the tor exit node. So a service will know that a packet came from a tor exit node and is being anonymized, but unless there's information in the packet payload ...


7

How Tor protects anonymity The anonymity happens because while the Tor exit node knows the final packet and its destination, it doesn't know where the packet originated from. Similarly, the entry node knows where the packet originated from, but it doesn't know the packet contents or where it is destined for. As a result (theoretically), none of the nodes ...


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We are now in the age of Machine Learning. Any obfuscation achieved through transformation of information should not be considered secure. Not now. Certainly not against future technology. ML is able to reverse-transform. You can think of this in terms of Manifold Topology. Suppose a kitten pic is distorted, projected onto some manifold. Let's say a ...


78

A simple pitch change is insufficient to mask a voice, as an adversary could simply pitch the audio back to recover the original audio. Most voice modulators use a vocoder, not a simple pitch change. The term "vocoder" is unfortunately rather heavily overloaded these days, so to clarify I mean the type that is most generally used in music, rather than a ...


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