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SIGABA CSP-2900 — Part 3 Level 3

by Nils Kopal, published on 7/31/2021

The SIGABA CSP-2900 was a highly secure encryption machine used by the US for strategic communication in WWII. In this series of challenges, you are provided with a ciphertext and a partially-known plaintext, here with the length of 200 and 100 characters.