Substitution Cipher

What is the meaning of cipher in cryptography?

• an algorithm that performs encryption

• an algorithm that generates a secret code

• an algorithm that performs encryption or decryption

• a secret code

Which of the following is a type of traditional cipher?

• transportation cipher

• transposition cipher

• transforming cipher

• vigenere cipher

Which of the following ciphers are created by shuffling the letters of a word?

• substitution cipher

• transposition cipher

• vigenere cipher

• Hill Cipher

What will be the ciphered text for the input string “sanfoundry” with key string as “code” to the program of keyword cipher?

• SCMBNUMERY

• SSCMBNUMERY

• NIFO

• NILO

A substitution cipher substitute one symbol with

• alphabets

• keys

• letters

• all of the above

AES stands for

• Advanced Encryption Standard

• Adaptive Encryption Standard

• Accumulative Encryption Standard

• Advanced Encryption System

The cryptography algorithms are divided in to ........ groups

• 1

• 2

• 3

• 4

DES maximum key values shown in input

• 48

• 56

• 64

• 42

An asymmetric key cipher uses ... keys

• 1

• 2

• 3

• 4

.................. is the original message before transmission

• Plain Text

• Cipher Text

• encrypted text

• None