Level II Challenges (153)
All challenges in
Level II, ordered by date posted (the most recent appear first).
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The challenges for the simplified GRANIT cipher, a method that can be done manually, serve as an exercise and use an intentionally simplified version of GRANIT.
Part 3 is a ciphertext-only challenge for which the second permutation key is known. Read more...
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Author:
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Published on: 2015-09-24 07:37 |
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Maximum number of attempts for this challenge: 15 |
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