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Which of the following is a block cipher?

A.
AES
Answers
A.
AES
B.
DH
Answers
B.
DH
C.
RC4
Answers
C.
RC4
D.
RSA
Answers
D.
RSA
Suggested answer: A

Explanation:

AES

https://en.wikipedia.org/wiki/Advanced_Encryption_Standard

AES is a subset of the Rijndael block cipher developed by two Belgian cryptographers, Vincent Rijmen and Joan Daemen, who submitted a proposal to NIST during the AES selection process

Incorrect answers:

RC4. RC4 (Rivest Cipher 4 also known as ARC4 or ARCFOUR meaning Alleged RC4, see below) is a stream cipher.

DH. Diffie--Hellman key exchange is a method of securely exchanging cryptographic keys over a public channel and was one of the first public-key protocols as conceived by Ralph Merkle and named after Whitfield Diffie and Martin Hellman.

RSA. RSA (Rivest--Shamir--Adleman) is one of the first public-key cryptosystems and is widely used for secure data transmission.

asked 18/09/2024
Bruce Tablada
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