Question

Trithemius cipher is a special case of _______________

(a) autokey cipher

(b) vigenere cipher

(c) hill cipher

(d) route cipher

Answer 1

Correct option is (b) vigenere cipher

The explanation is: Trithemius cipher is a special case of vigenere cipher. The difference is that vigenere cipher uses a different key every time but a fixed key is used by trithemius cipher.