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When I developed a RSA based application I was worried about quantum computers breaking it (which proved false, I should had worried more about marketing). Now
by Egregore 15y ago
When I developed a RSA based application I was worried about quantum computers breaking it (which proved false, I should had worried more about marketing). Now it seems that there is a flaw in quantum cryptography itself, which actually is not a cryptography in classical meaning, but rather a way of securely transmitting data.
- asharp 15y agoActually you would worry more about incorrectly implemented padding or a side channel attack or something similarly stupid destroying your cryptosystem. Sad, but true.
- X4 15y agoSide-channels are just another way to "see" what is going on, whether it is on a keyboard, hard-disk, display, videoboard, CPU, bus, controller, etc. You've got execution time (latency), sounds, radio frequencies, electromagnetic fields, etc. just to cite the 'accidental' leak channels that act as a side-effect of the intended infrastructure. we're not secure.
- mdc 15y agoYou're conflating two different things (quantum computers and quantum cryptography) which just happen to share a basis in quantum effects. An attack on quantum cryptography has nothing whatsoever to do with whether a quantum computer could be used to break conventional encryption.