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sweeneyrod
6y ago
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Damn, looks like I should stop using 21 as my PK then.
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nielsole
6y ago
Not sure what algorithm you use for encryption, but 21 doesn't look like a prime. Maybe run a Miller Rabin test on it? ;)
sweeneyrod
OP
6y ago
It's the modulus of my RSA PK, so the product of two large primes rather than a prime itself. Of course, I can't say what the factors are, otherwise anyone could crack it even if they don't have a quantum computer!
neuralzen
6y ago
Just XOR 21 times, problem solved!
myle
6y ago
Always with the same mask, to make sure it is applied well.
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