Richard Lamb <[email protected]> writes: >I have ran across a relatively simple but effective protection against >attempts to discern memory states using low dose gamma rays such as those >from a lab Co-60 source.
Do you mean "discern" or "affect"? Ionizing radiation will cause single-event upsets, which is disastrous for non-hardened crypto (as well as permanent damage from things like neutrons, but that's more detectable), but how do you discern memory states with it? >Only caveat I would point out is this bit flipping has also been used in the >standard tamper detection chip used by many HSM vendors (Dallas semi.. I need >to look up number). So it may be fall under some IPR from that chip maker. I wrote about bit-flipping defences in the late 1990s, and I believe it was used before then but not talked about much, so either the patents will be close to expiring or there's prior art for them. Peter. _______________________________________________ Tech mailing list [email protected] https://lists.cryptech.is/listinfo/tech
