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SHA-1 implementation in C++. Do not use SHA-1 unless you have to! https://en.wikipedia.org/wiki/SHA-1#Birthday-Near-Collision_Attack_%E2%80%93_first_practical_chosen-prefix_attack
Beautify the Git commit hash! This is a little useless toy inspired by BitCoin's "proof of work" concept. It enables you to modify your Git commit to enforce a certain prefix on the Git commit hash.
Texcaller is a convenient interface to the TeX command line tools that handles all kinds of errors without much fuzz. It is written in plain C, is fairly portable, and has no external dependencies …
Create a forgery-proof timestamp for your data, secured by the bitcoin network.
Print your GPG key fingerprint with LaTeX
Draft of a parser for ASTERIX binary data such as CAT062, written in Python
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