Kinoco Hacker Hands-on security practice
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Cryptography Level 2 80 points

Finding Hash Collisions

Mission

MD5 collisions are practical. Hashes with broken collision resistance must not be used for security-sensitive integrity or signatures. Two files said to share the same MD5: file_a != file_b md5(file_a) = d131dd02c5e6eec4693d9a0698aff95c md5(file_b) = d131dd02c5e6eec4693d9a0698aff95c To state that you found an MD5 collision, join the three words md5, collision, and found with underscores in lowercase and submit them as KINOCO{...}.

#cryptography#hash#md5#collision

Clear it in 3 steps

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  1. No environment needed

    This challenge can be solved with the information in the statement alone. Submit the flag you find directly.

  2. Submit the flag