Eccouncil 212-81 Exam - Topic 5 Question 62 Discussion

Actual exam question for Eccouncil's 212-81 exam

Question #: 62
Topic #: 5

Bruce Schneier is a well-known and highly respected cryptographer. He has developed several pseudo random number generators as well as worked on teams developing symmetric ciphers. Which one of the following is a symmetric block cipher designed in 1993 by Bruce Schneier team that is unpatented?

APegasus

BBlowfish

CSHA1

DAES

Show Suggested Answer

Suggested Answer: B

Blowfish

https://en.wikipedia.org/wiki/Blowfish_(cipher)

Blowfish is a symmetric-key block cipher, designed in 1993 by Bruce Schneier and included in many cipher suites and encryption products.

by Nohemi at Nov 26, 2025, 03:17 AM

Limited Time Offer

25%

Off

Get Premium 212-81 Questions as Interactive Web-Based Practice Test or PDF

Contribute your Thoughts:

Submit Cancel

Sarina

5 months ago

Blowfish is definitely the best choice here!

upvoted 0 times

...

Bok

5 months ago

AES is patented, so it can't be the answer.

upvoted 0 times

...

Claudia

5 months ago

SHA1 is not a block cipher, so it can't be right.

upvoted 0 times

...

Rosann

5 months ago

I remember studying it in class. Great cipher!

upvoted 0 times

...

Willard

5 months ago

Yeah, Blowfish was designed by Schneier.

upvoted 0 times

...

Haley

6 months ago

Yup, Blowfish is the answer!

upvoted 0 times

...

Elinore

6 months ago

Wait, is Blowfish really that old?

upvoted 0 times

...

Venita

6 months ago

Blowfish was unpatented, right?

upvoted 0 times

...

Dierdre

7 months ago

I thought it was AES?

upvoted 0 times

...

Tamra

7 months ago

Definitely Blowfish!

upvoted 0 times

...

Broderick

7 months ago

Blowfish, hands down. Schneier's probably patented everything else to fund his secret underground lair.

upvoted 0 times

...

Peggy

7 months ago

Gotta be Blowfish. I heard Schneier's team made it in their spare time while binge-watching "Cryptography for Dummies."

upvoted 0 times

...

Micaela

7 months ago

Hmm, Blowfish sounds like the right answer. Schneier's got a knack for these things.

upvoted 0 times

...

Bronwyn

7 months ago

AES seems too modern for that time frame; I think it was developed later. So, it must be Blowfish.

upvoted 0 times

...

Glynda

8 months ago

I practiced a question similar to this, and I believe Blowfish was indeed designed by Schneier in '93.

upvoted 0 times

...

Vicki

8 months ago

I'm not entirely sure, but I feel like SHA1 is more about hashing than being a symmetric block cipher.

upvoted 0 times

...

Howard

8 months ago

I think I remember studying about Blowfish in my cryptography class. It was mentioned as an unpatented cipher, right?

upvoted 0 times

...

William

8 months ago

Ugh, I'm struggling with this one. I know Schneier's work, but I can't quite remember the specifics of the ciphers he's developed. I'll have to make an educated guess and hope for the best.

upvoted 0 times

...

Cecily

8 months ago

I'm feeling pretty confident about this one. Blowfish seems like the obvious choice - it fits all the criteria in the question. I'm going to go with that.

upvoted 0 times

...

Solange

9 months ago

Blowfish, of course! Schneier's baby is the way to go.

upvoted 0 times

...

Alpha

9 months ago

I think it's Blowfish. It’s well-known.

upvoted 0 times

...

Juan

9 months ago

Okay, let me break this down. Schneier is a cryptographer, so we're looking for a symmetric cipher. It was developed in 1993 and is unpatented, which rules out AES. I'm leaning towards Blowfish, but I'll double-check the other options just to be sure.

upvoted 0 times

...

Latrice

10 months ago

Hmm, I'm a bit confused. I know Schneier worked on symmetric ciphers, but I'm not sure which one was developed in 1993 and is unpatented. I'll have to think this through carefully.

upvoted 0 times

...

Kirk

10 months ago

I'm pretty sure Blowfish is the answer here. Schneier is known for designing symmetric ciphers, and Blowfish was developed by his team in 1993 and is unpatented.

upvoted 0 times