Question

If the key is LEMON and ciphertext is TX OG TNYR decrypt it using vegeneri table?​

Answer 1

Explanation:

In Ceaser cipher algorithm encryption and decryption takes place.

During encryption right shift takes place depending upon the key and in decryption left shift takes place depending on key.

In the given question key value is 15 and decryption is asked:

Given message is WTAAD

Left shift 15 on W is H

Left shift 15 on T is E

Left shift 15 on A is L

Left shift 15 on A is L

Left shift 15 on D is O

The decrypted message will HELLO.

So, option (B) is correct.