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If the attacker knows for sure that the (character space size) ^ (password length) is greater than 2 ^ (AES key length), then, yes, it's a better idea for the attacker to brute-force the AES key. Given such an assumption of the attacker's knowledge, it's a mathematical fact that the search size for the AES key will be smaller. Such an assumption of attacker ...


2

I'm gonna try to answer you separately: Access Control Matrix Q: "Could you say that in this matrix, the right r of S1 over O1 is leaked to S2 (because S2 can use S1 to access O1)?" A: No. If you consider the execution right to behave like a take right, then yes, S1's reading rights over O1 have leaked to S2, because originally S2 had no rights over O1. ...


1

According to this and Wikipedia, the OSI Session Layer is responsible for setting up any kind of conversation/dialogue. As ISAKMP runs on top of UDP (port 500) and it sets up a secure and authenticated channel for communication, i would say that it is part of OSI Session Layer.



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