So this is the core of the Infineon RSA fail key detector: https://marcan.st/paste/MOEoh2EH.txt … - this is very interesting indeed (and a huge fail).
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Note that Infineon keys pass *all* of those tests: m%p for each of those p is in the list. Infineon moduli mod 37 are *always* in (1,10,26)!
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I'm no cryptanalyst but that sounds like some serious severe fail indeed. They generate a *tiny* fraction of all possible moduli.
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This SO question has more info:https://crypto.stackexchange.com/questions/52292/what-is-fast-prime …
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Here's an even simpler deobfuscated version of the ROCA RSA key test:https://gist.github.com/marcan/fc87aa78085c2b6f979aefc73fdc381f …
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And so tiny, the first test already combs 9 out of each 11 moduli :P
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8 out of 10. If your moduli has a factor of 11 the test will say you're fine but you kind of have bigger problems then.
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