https://github.com/albinzayedrawan/classical-ciphers-and-transposition-techniques
Lab Exercises about Classical Ciphers and Transposition Techniques
https://github.com/albinzayedrawan/classical-ciphers-and-transposition-techniques
caesar-cipher cryptanalysis cryptography vigenere-cipher
Last synced: 6 months ago
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Lab Exercises about Classical Ciphers and Transposition Techniques
- Host: GitHub
- URL: https://github.com/albinzayedrawan/classical-ciphers-and-transposition-techniques
- Owner: albinzayedrawan
- Created: 2024-11-09T17:58:22.000Z (11 months ago)
- Default Branch: main
- Last Pushed: 2024-11-09T18:06:12.000Z (11 months ago)
- Last Synced: 2025-02-10T01:30:01.900Z (8 months ago)
- Topics: caesar-cipher, cryptanalysis, cryptography, vigenere-cipher
- Language: Python
- Homepage:
- Size: 4.88 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# Classical Ciphers and Transposition Techniques
## Caesar Cipher:
- The program should allow the user to input the plaintext and the shift key.
- It should encrypt the plaintext using the shift key and output the ciphertext.
- The program should also be able to reverse the process (decrypt) using the ciphertext and the same shift key.
## Cryptanalysis:
- Ciphertext: WKLV LV D WHVW.
- Python script will attempt to decrypt the message by trying all possible keys (brute force attack).
- Ciphertext will be shifted through all 25 possible shift values (since there are 26 letters in the alphabet).
- It will output each possible decrypted message and the user can identify the correct plaintext based on legibility.
## Vigenère Cipher:
- The program should allow the user to input the plaintext and a keyword.
- It should encrypt the plaintext using the repeating sequence of the keyword and output the ciphertext.
- The program should also allow decryption using the same keyword.