Tunny cipher

Target entity: Tunny cipher
Context triple: [Colossus computers, targetCipherSystem, Tunny cipher]

• A. Lucifer cipher
  The Lucifer cipher is an early block cipher developed at IBM by Horst Feistel that served as a foundational design precursor to the Data Encryption Standard (DES).
• B. Serpent cipher
  Serpent cipher is a symmetric-key block cipher and former AES finalist known for its strong security margin and conservative design based on a substitution–permutation network structure.
• C. de Vigenère
  de Vigenère is the surname most famously associated with Blaise de Vigenère, the 16th-century French diplomat and cryptographer known for the Vigenère cipher.
• D. Spritz cipher
  Spritz cipher is a modern stream cipher and hash function designed by Ronald Rivest and Jacob Schuldt as a more secure and flexible successor to RC4.
• E. Playfair
  Playfair is a Scottish surname most notably associated with John Playfair, an 18th–19th century mathematician and geologist known for popularizing geometry and scientific ideas.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Tunny cipher
Target entity description: The Tunny cipher was a high-level German teleprinter encryption system used during World War II for strategic communications, whose interception and decryption at Bletchley Park significantly aided Allied codebreaking efforts.

• A. Lucifer cipher
  The Lucifer cipher is an early block cipher developed at IBM by Horst Feistel that served as a foundational design precursor to the Data Encryption Standard (DES).
• B. Serpent cipher
  Serpent cipher is a symmetric-key block cipher and former AES finalist known for its strong security margin and conservative design based on a substitution–permutation network structure.
• C. de Vigenère
  de Vigenère is the surname most famously associated with Blaise de Vigenère, the 16th-century French diplomat and cryptographer known for the Vigenère cipher.
• D. Spritz cipher
  Spritz cipher is a modern stream cipher and hash function designed by Ronald Rivest and Jacob Schuldt as a more secure and flexible successor to RC4.
• E. Playfair
  Playfair is a Scottish surname most notably associated with John Playfair, an 18th–19th century mathematician and geologist known for popularizing geometry and scientific ideas.
• F. None of above. chosen