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bkcrack

Crack legacy zip encryption using Biham and Kocher's known plaintext attack

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About

Crack legacy zip encryption with Biham and Kocher's known plaintext attack

Commands

bkcrack

Examples

Crack a zip file with known plaintext from an unencrypted file$ bkcrack -C encrypted.zip -c encrypted_file.txt -P plaintext.zip -p plaintext_file.txt
Recover the encryption keys from a zip file$ bkcrack -C encrypted.zip -c target_file.txt -d decrypted_output.txt -p plaintext.txt
Use recovered keys to decrypt a zip file$ bkcrack -C encrypted.zip -k 12345678 87654321 abcdef00 -d decrypted.zip