Here, we have a set of multiplechoice questions and answers (quiz) on Block Cipher as IDEA, DES, AES, RSA in Cryptography.
Title  

In the AES128 algorithm there are mainly __________ similar rounds and _________ round is different from other roundIn the AES128 algorithm there are mainly __________ similar rounds and _________ round is different from other round.
The answer is:
B. 9 ; the last


Which of the following modes of operation in DES is used for operating?Which of the following modes of operation in DES is used for operating?
The answer is:
C. Electronic code book (ECB)


Using Rivest, Shamir, Adleman cryptosystem with p=7 and q=9. Encrypt M=24 to find ciphertext. The Ciphertext is:Using Rivest, Shamir, Adleman cryptosystem with p=7 and q=9. Encrypt M=24 to find ciphertext. The Ciphertext is:
The answer is:
C. 114


International Data Encryption Algorithm (IDEA) was developed byInternational Data Encryption Algorithm (IDEA) was developed by
The answer is:
A. Xuejia Lai and James Massey


When do we compare the AES with DES, which of the following functions from DES does not have an equivalent AES function in cryptography?When do we compare the AES with DES, which of the following functions from DES does not have an equivalent AES function in cryptography?
The answer is:
C. swapping of halves


Data encryption standard is a block cipher and encrypts data in blocks of size of _____ eachData encryption standard is a block cipher and encrypts data in blocks of size of _____ each.
The answer is:
B. 64 bits


The process of decryption of an AES ciphertext is similar to the encryption process in the ______The process of decryption of an AES ciphertext is similar to the encryption process in the ______.
The answer is:
A. Reverse order


AES stands for Advanced Encryption Standard, 

RSA algorithm is ____ cryptography algorithmRSA algorithm is ____ cryptography algorithm.
The answer is:
C. Asymmetric


Amongst which of the following is / are true with reference to the rounds in AES –Amongst which of the following is / are true with reference to the rounds in AES –
The answer is:
D. All of the mentioned above

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