Cryptography Algorithms

Caesar Cipher

• Function takes plaintext (string) and key/shift (integer).
• Output is the ciphertext.

Play Fair Cipher

• Function takes plaintext (string) and key (string).
• Output is the ciphertext.
• Test keys: rats, archangel.

Hill Cipher

• Function takes plaintext (string) and key matrix (array of integers) [predefined].
• Output is the ciphertext.
• Test keys provided [frid].

Vigenere Cipher

• Function takes plaintext (string), key (string), and mode (bool).
• Output is the ciphertext.
• Modes: auto mode (true), repeating mode (false).
• Test keys: pie (repeating mode), aether (auto mode).

Vernam Cipher

• Function takes plaintext and key (both strings).
• Output is the ciphertext.
• Test key: SPARTANS.