best way to check for modification of self
Timothy Newsham
newsham at wiliki.eng.hawaii.edu
Fri Jul 30 20:37:33 PDT 1993
>
>
>
> I am looking for C src or algorithms that would be useful for a program
> to check its own integrity and make sure it hasnt been modified.
>
> Looking at the filesize of the file would not help, since I want to make
> sure no one has modified just some text, etc. I would like the algorithm
> or code to be rather quick in doing the check in the initialization of
> the program. Would finding the src to CRC or sum and adding that into the
> program be the best solution?
>
> Has anyone else dealt with this?
this is what the tripwire package does.
I think (perhaps maybe) I heard someone say it uses a hashing
function that is not cryptographically secure (ie. can be forged)
but also that the design is highly modular and the hashing function
can be replaced with something more secure
> Christopher Klaus
> klaus at mail.lds.loral.com cklaus at hotsun.nersc.gov
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