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After reading about language based security, it seems protocols that are defined using context-free or regular grammars are highly resistant to code injection attacks.

Are there any good security protocols that are context-free or regular ?

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closed as too broad by Adi, TildalWave, Terry Chia, rook, Gilles Nov 29 '13 at 9:43

There are either too many possible answers, or good answers would be too long for this format. Please add details to narrow the answer set or to isolate an issue that can be answered in a few paragraphs.If this question can be reworded to fit the rules in the help center, please edit the question.

I'll hack a Turing machine, just give me a pair of scissors and some scotch tape. In the real world, security is an unsolved problem. – rook Nov 29 '13 at 6:09

This paper deeply analyzes the problem and introduces a technique called Differential Parse Tree Differential Analysis. You should probably start from there.

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Please consider quoting parts of the PDF to improve your answer as links tends to go dead after some time. – Simon Nov 28 '13 at 18:34
This paper is the reason behind this question. I'm looking for a concrete protocol. – hulkingtickets Nov 28 '13 at 22:09

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