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SSCP · Question #639
SSCP Question #639: Real Exam Question with Answer & Explanation
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 rounds.
Submitted by krish.m· Apr 18, 2026Cryptography
Question
Which of the following algorithms is a stream cipher?
Options
- ARC2
- BRC4
- CRC5
- DRC6
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
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