Which of the following algorithms is a stream cipher?

The correct answer is B. RC4. RC2, RC4, RC5 and RC6 were developed by Ronal Rivest from RSA Security. In the RC family only RC4 is a stream cipher. RC4 allows a variable key length. RC2 works with 64-bit blocks and variable key lengths, RC5 has variable block sizes, key length and number of processing…

Submitted by krish.m· Apr 18, 2026Cryptography

Question

Which of the following algorithms is a stream cipher?

Options

ARC2
BRC4
CRC5
DRC6

How the community answered

(40 responses)

A
3% (1)
B
88% (35)
C
3% (1)
D
8% (3)

Explanation

RC2, RC4, RC5 and RC6 were developed by Ronal Rivest from RSA Security. In the RC family only RC4 is a stream cipher. RC4 allows a variable key length. RC2 works with 64-bit blocks and variable key lengths, RC5 has variable block sizes, key length and number of processing rounds. RC6 was designed to fix a flaw in RC5.

Topics

#Stream Ciphers#RC4#Cryptographic Algorithms

Community Discussion

No community discussion yet for this question.

Full SSCP Practice