50+ Different Ciphers and their Security Strength Quiz and Answers (Cyber Security)

These Different Ciphers and their Security Strength Quiz and Answers (Cyber Security) are composed by our Special Team of Livemcqs. We also published TOP 1000+ Cyber Security Quiz and Answers (Topic-wise) that will help you the most.

Different Ciphers and their Security Strength Quiz and Answers

In Playfair cipher, at first, a key table is produced. That key table is a 5 by 5 grid of alphabets which operates as the key to encrypt the plaintext.


______________ employs a text string as a key that is implemented to do a series of shifts on the plain-text.


The ________________ has piece of the keyword that has the same length as that of the plaintext.


In _____________ a sequence of actions is carried out on this block after a block of plain-text bits is chosen for generating a block of cipher-text bits.


In _______________ the plain-text is processed 1-bit at a time & a series of actions is carried out on it for generating one bit of cipher-text.


The procedure to add bits to the last block is termed as _________________


Which of the following is not an example of a block cipher?


Data Encryption Standard is implemented using the Feistel Cipher which employs 16 round of Feistel structure.


DES stands for


____________ carries out all its calculations on bytes rather than using bits and is at least 6-times faster than 3-DES.


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What are the strongest ciphers?

Currently, the most secure and most recommended combination of these four is: Elliptic Curve Diffie–Hellman (ECDH), Elliptic Curve Digital Signature Algorithm (ECDSA), AES 256 in Galois Counter Mode (AES256-GCM), and SHA384. 

Which cipher is the most secure?

The Advanced Encryption Standard, AES, is a symmetric encryption algorithm and one of the most secure. The United States Government use it to protect classified information, and many software and hardware products use it as well.

What are the main types of ciphers?

Ciphers can be distinguished into two types by the type of input data: block ciphers, which encrypt block of data of fixed size, and. stream ciphers, which encrypt continuous streams of data.

What is security ciphers?

Ciphers, also called encryption algorithms, are systems for encrypting and decrypting data. A cipher converts the original message, called plaintext, into ciphertext using a key to determine how it is done. Asymmetric key algorithms or ciphers use a different key for encryption/decryption.