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Crack vigenere encrypted text using index of coincidence and character frequencies.

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Name		Name	Last commit message	Last commit date
Latest commit History 6 Commits
txt		txt
.gitignore		.gitignore
Makefile		Makefile
README.md		README.md
crack-vigenere.c		crack-vigenere.c
str.h		str.h

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Vigenère cipher solver

Uses index of coincidence and frequency analysis to find Vigenère cipher keys from ciphertexts.

Build

make

Binary will be written to ./build/solve

Example usage

./build/solve txt/shakespeare-encrypted.txt

References

Vigenère cipher

Index of Coincidence

Frequency analysis

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Crack vigenere encrypted text using index of coincidence and character frequencies.

cipher vigenere-decoder

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