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* rands: use splitmix64 for seeding Seeding with splitmix64 is a good way to avoid starting with low-entropy PRNG states, and is explicitly recommended by the authors of both xoshiro256++ and Romu. While at it, give the xoshiro256++ PRNG its proper name. * rands: use fast_bound() to generate number in range * rands: add top-level choose() * rands: add Rand::next_float() * rands: add Rand::coinflip() helper * libafl: unbreak tests that relied on direct seeding * rands: add SFC64 PRNG SFC64 is a well-established and well-understood PRNG designed by Chris Doty-Humphrey, the author of PractRand. It has been tested quite a lot over the years, and to date has no known weaknesses. Compared to xoshiro256++, it is slightly faster and is likely to be a more future-proof design (xoshiro/xoroshiro family of generators come with quite long history of [flaws][1] found over the years). Compared to Romu, it is slightly slower, but guarantees absense of bias, minimum period of at least 2^64 for any seed, and non-overlapping streams for different seeds. [1]: https://tom-kaitchuck.medium.com/designing-a-new-prng-1c4ffd27124d
LibAFL Utils
Welcome to the LibAFL Utils folder. Here, you find some helful utilities that may be helpful for successfull fuzzing campaigns.
DeExit: ldpreload exit lib
In the deexit folder, you'll find a ldpreloadable library, that changes calls to exit to abort()s.
When a target exits, it quits, and LibAFL will not be able to catch this or recover.
Abort, on the other hand, raises an error LibAFL's inprocess executor will be able to catch, thanks to its signal handlers.
Gramatron: gramatron grammars and preprocessing utils
See https://github.com/HexHive/Gramatron
libafl_benches
This folder contains benchmarks for various things in LibAFL, like hash speeds and RNGs.
Run with cargo bench