Embed Notice

Several of my personal projects should probably say:

WARNING: This source code contains techniques which are known to the State of California to cause cancer.

My cryptographic hash library does approximately the following to build, via a makefile:

• Uses a bunch of make functions to generate target lists for wildcard recipes.
• Run the Python scripts that generate a series of header files full of macros.
• Runs the C preprocessor on meta-implementations of Merkel-Damgård hash functions once for each algorithm.
• Concatenates some of the files together so the compiler can inline them better.
• Compiles the files (a second pass of the preprocessor runs).
• Links everything together.

To the best of my knowledge, it's the fastest non-parallel x86_64 implementation of all the hash algorithms it supports, and it allows for building things like length extension attacks.