1.

What will be the ciphered text if route cipher is used for encrypting the plain text “SANFOUNDRY” with number of columns given to be 5 and route from the bottom right anti clockwise?(a) SUANNDFROY(b) SORAFUDYNN(c) YOFNASUNDRY(d) SANFOUNDRYI had been asked this question by my school principal while I was bunking the class.This intriguing question comes from Cryptography in chapter Cryptography of Data Structures & Algorithms II

Answer» RIGHT OPTION is (c) YOFNASUNDRY

Explanation: For encrypting a plain text using route cipher we use a table having 5 columns as shown below. Then we READ from the bottom right anti CLOCKWISE to cipher the plain text.

S

A

N

F

O

U

N

D

R

Y

So the ciphered text becomes “YOFNASUNDRY”.


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