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純粋・応用数学(含むガロア理論)5

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>>252
> >>251
> 
> 違う
> 
> https://www.cs.cmu.edu/~rdriley/487/papers/Thompson_1984_ReflectionsonTrustingTrust.pdf
> TURING AWARD LECTURE
> Reflections on Trusting Trust
> To what extent should one trust a statement that a program is free of Trojan
> horses? Perhaps it is more important to trust the people who wrote the software.
> KEN THOMPSON
> Communications of the ACM August 1984 Volume 27 Number 8
> 
> P763の左上より
> ”Figure 3.2 shows a simple modification to the compiler that will deliberately miscompile source whenever a particular pattern is matched.
> If this were not deliberate, it would be called a compiler "bug." Since it is deliberate, it should be called a "Trojan horse."
> The actual bug I planted in the compiler would match code in the UNIX "login" command.
> The replacement code would miscompile the login command so that it would accept either the intended encrypted password or a particular known password.
> Thus if this code were installed in binary and the binary were used to compile the login command, I could log into that system as any user. ”
> だよね
> 
> つまり、>>249 の通りです。『Unix考古学 Truth of the Legend』の著者である藤田昭人さんの講演スライドPDFの通りでもある
> 確かに、文中に"self-reproducing program"が出て来るけど、些末な枝葉だ。あんた、シッタカ ハナタカの類で、本質を外している

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