CS 260r 2017 L5: Jitk: A Trustworthy In-Kernel Interpreter Infrastructure (2/5)
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Question 1 *
Jitk security filters are defined in SCPL, a new language, but the kernel verifier—the most important contribution—accepts BPF filters as input. SCPL requires an additional proof layer, a burden. What is an advantage of SCPL?
Your answer
Question 2 *
The last paragraph of §5.3 seems very precisely worded. When the authors say Lemma 3 “provides a strong sanity check on the internal consistency of our encoder and decoder,” is this simply another way of saying Lemma 3 proves the correctness of their encoder and decoder? Why or why not?
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