DES (15 Marks)

CodeChefOpen on judge ↗

Given a plaintext and key for DES encryption, output the 16 keys used in the encryption process. Also output the result of the first fiestel round (i.e. L1R1). The permutation tables and substitution boxes to be used can be found [here](https://pastebin.com/xMXX8AdA). Take the number of left shfts (1 or 2) for generating the 16 keys as explained in the book. ###Input: - First line cont

HINT LADDERno hints yet

L1 Observation

L2 Technique

L3 Approach

L4 Pseudo-code

🔒

L5 Full solution

L5 unlocks only if you insist twice

solution.cppC++17

CodeSearch Tutor

Hints, not spoilers — it won’t hand over the full solution unless you insist.

voice by Sarvam AI