chore: initial commit

README.md

bin/md5_fastcoll

ex3.sh

ex4.sh

out/.ex3.data1.bin

out/.ex3.data2.bin

out/.ex3.prefix.bin

out/.ex4-base.py

out/.ex4.data1.bin

out/.ex4.data2.bin

out/.ex4.prefix.bin

out/ex3-a.py

out/ex3-b.py

out/ex4-a.py

out/ex4-b.py

out/ex4-evil.py

out/ex4-good.py

replace.py

templates/ex3.py

templates/ex4.py