CRYPTEXT ROUND 2
(LEVEL 1)
QUESTIONS:
1. Decrypt the following to find the key for next decryption “L HETPMU RET GF
DOIYODUFC GP N LEICUUOTS SECIC” (KEY: What two things can you never eat for
breakfast?) then decrypt this ” N DSFBEH NICLU GQ SOGOS QYOLN W DWV” (KEY:
You will find key in the first encryption statement for the above decryption & key
length is 9). (Hint: This cipher was invented by a famous French Cryptographer Felix
Delastelle & is a digraphic substitution cipher)
(30 points)
2. Decrypt the following to find the key for next decryption “HEBQMMEH R EHAK MK
LV QXXPXXWMXX”(KEY: What has 4 eyes but can’t see?) then decrypt this “
LIIHWMQE LK KMYNILH JLGAR LVHTL EOII XMYX” (KEY: You will find
key in the first encryption statement for the above decryption & key length is 4).
(Hint: Here, combination of 2 ciphers is used. First cipher is also known as Simple
Substitution Cipher & relies on a fixed replacement structure while Second cipher
acts on blocks of letters (the lengths of the keyword), rather than the whole cipher
text) (20 points)
Password in capital block letter for Level 2 document: Last word of both (Q.1 & Q.2) the decrypted
text. Example: XXXYYY.