Quiz 1 - Basic Cryptography

What do we call for the art and science of concealing meaning?

• Cryptoanalysis

• Cryptosystem

• Cryptography

• Encryption

What do we call for the method of breaking of codes?

• Cryptoanalysis

• Cryptosystem

• Cryptography

• Encryption

In cryptosystem, C stands for?

• The set of plaintexts

• The set of keys

• The set of ciphertexts

• The set of enciphering functions

What is the meaning of cryptography in Greek words?

• Secret Meaning

• Secret Writing

• Secret Reading

• Secret Encoding

Which of the following is the widely known cipher in which letters are shifted.

• Vigenere Cipher

• Caesar Cipher

• Rail Fence Cipher

• Transposition CIpher

What is the goal of cryptography?

• Just for fun

• To keep enciphered information secret

• To show how powerful a country is

• To discriminate hackers

What type of attack wherein the adversary has the ciphertext and plaintext that was enciphered and his goal is to find the key that was used?

• Ciphertext Only Attack

• Known Plaintext Attack

• Chosen Plaintext Attack

• Known Key Attack

What do we call for a cryptosystem that uses the same key for encipherment and decipherment?

• Classical Cryptosystems

• Single-key Cryptosystems

• Symmetric Cryptosystems

• All of the options

What do we call for a classical cipher that changes characters in the plaintext to produce the ciphertext?

• Transposition Cipher

• Substitution Cipher

• Cancellation Cipher

• None of the options

What do we call for a classical cipher that rearranges the characters in the plaintext to form the ciphertext and the letters are not changed?

• Transposition Cipher

• Substitution Cipher

• Cancellation Cipher

• None of the options