Here, we have a set of multiplechoice questions and answers (quiz) on ciphers in Cryptography (basic concepts of Cryptography Techniques and different types of ciphers).
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We are provided the plain text “SUN”. You need to convert the given plain text into ciphertext under the Ceasar cipher encryption technique. Which of the following options is the correct ciphertext for the given text if the key is 2?We are provided the plain text “SUN”. You need to convert the given plain text into ciphertext under the Ceasar cipher encryption technique. Which of the following options is the correct ciphertext for the given text if the key is 2?
The answer is:
A. UWP


Which of the following cannot be chosen as a key in the Caesar cipher?Which of the following cannot be chosen as a key in the Caesar cipher?
The answer is:
C. A string


Which of the following cipher techniques include the involvement of matrix operations in their algorithms of encryption and decryption?Which of the following cipher techniques include the involvement of matrix operations in their algorithms of encryption and decryption?
The answer is:
C. Both a and b


Which of the following ciphers is a block cipher?Which of the following ciphers is a block cipher?
The answer is:
C. Playfair cipher


Which of the following ciphers uses asymmetric key cryptography?Which of the following ciphers uses asymmetric key cryptography?
The answer is:
C. Diffie Hellman Cipher


"Cipher" is synonymous with "code", 

Block ciphers accumulate symbols in a message of a ______Block ciphers accumulate symbols in a message of a ______.
The answer is:
A. Fixed size


With symmetric key algorithms, the ____ key is used for the encryption and decryption of dataWith symmetric key algorithms, the ____ key is used for the encryption and decryption of data.
The answer is:
B. Same


____ is the message or data that can be readable by the sender____ is the message or data that can be readable by the sender.
The answer is:
C. Plain text


In the case of symmetric key encryption, the secret key that both the parties possess can be anything such as a _______In the case of symmetric key encryption, the secret key that both the parties possess can be anything such as a _______.
The answer is:
A. Passcode or a password


You are supposed to use hill cipher for encryption technique. You are provided with the following matrix,You are supposed to use hill cipher for encryption technique. You are provided with the following matrix, A = [ 4 2 2 1 ] Is the given matrix 'A', a valid key to be used for encryption?
The answer is:
B. No

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