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Eccouncil 212-81 Exam - Topic 14 Question 18 Discussion

Actual exam question for Eccouncil's 212-81 exam
Question #: 18
Topic #: 14
[All 212-81 Questions]

This algorithm was published by the German engineering firm Seimans in 1993. It is a software based stream cipher using Lagged Fibonacci generator along with a concept borrowed from the shrinking generator ciphers.

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Suggested Answer: D

FISH

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

The FISH (FIbonacci SHrinking) stream cipher is a fast software based stream cipher using Lagged Fibonacci generators, plus a concept from the shrinking generator cipher. It was published by Siemens in 1993. FISH is quite fast in software and has a huge key length. However, in the same paper where he proposed Pike, Ross Anderson showed that FISH can be broken with just a few thousand bits of known plaintext.


by Hillary at Mar 31, 2023, 07:49 PM

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Nilsa
7 months ago
I disagree, I always thought it was FISH.
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Alyce
7 months ago
Definitely not Twofish, that's a different one.
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Gennie
7 months ago
Wait, Seimans made a cipher? That's surprising!
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Valentin
7 months ago
Nope, it's actually Blowfish!
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Fatima
7 months ago
I think that's RC4, right?
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Lyndia
8 months ago
I feel like FISH could be a trick option, but I really can't recall the specifics about it.
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Caitlin
8 months ago
I practiced a similar question on stream ciphers last week, and I think RC4 was the answer there too.
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Maddie
8 months ago
The mention of Lagged Fibonacci makes me lean towards RC4, but I could be mixing it up with another cipher.
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Luisa
8 months ago
I think I remember studying about stream ciphers, but I'm not sure if it was RC4 or something else.
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Sophia
8 months ago
This looks like a complex question with a lot of moving parts. I'll need to carefully read through the details and think through the different patterns that could be applied to solve the data exchange issues.
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Bettina
8 months ago
This seems straightforward - I'm pretty sure the answer is compound interest, since that's the standard formula for calculating interest earned over time.
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