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GIAC GISF Exam - Topic 7 Question 56 Discussion

Posted by Dallas on Sep 10, 2024 at 02:29 AM

Which of the following types of cipher encrypts alphabetic text by using a series of differentCaesar ciphers based on the letters of a keyword?

Suggested Answer: C

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35 comments · newest first
VI
Vilma 10 months ago
Vigenère is classic, can't believe some people mix it up!
CH
Chau 11 months ago
I thought it was a transposition cipher at first.
AR
Arlene 11 months ago
Wait, are we sure it's not a block cipher?
DI
Dierdre 11 months ago
Totally agree, A is the right answer!
DU
Dustin 11 months ago
It's definitely the Vigenère cipher!
GL
Glendora 11 months ago
I recall a question similar to this in our last review session, and I think it was about the Vigenère cipher too. It just fits the description!
VI
Virgilio 12 months ago
I’m a bit confused; I thought the Vigenère was more about polyalphabetic substitution. Could it be something else?
RE
Refugia 12 months ago
I remember practicing with different ciphers, and the Vigenère was definitely one of them. It feels like the right choice here.
GL
Glendora 12 months ago
I think the answer might be the Vigenère cipher since it uses a keyword to shift letters, but I'm not completely sure.
DO
Domitila 12 months ago
Transposition ciphers rearrange the order of the letters, so that doesn't seem right for this description. I'm leaning towards Vigenère.
JI
Jill 1 year ago
The keyword aspect makes me think Vigenère as well. I'll focus on understanding how that cipher works in more detail.
JO
Joye 1 year ago
Hmm, I'm a bit confused on the difference between block ciphers and stream ciphers. I'll have to review those concepts again.
FR
Francine 1 year ago
I'm pretty sure this is a Vigenère cipher, since it mentions using a keyword to apply a series of Caesar ciphers.
HA
Haley 1 year ago
Social engineering, definitely. That's the technique that involves manipulating people to get information, right?
CA
Catrice 1 year ago
This kind of question pops up in practice tests, and I feel like I remember most sources saying it points to the screen, not the keyboard.
AR
Arlene 1 year ago
Stream ciphers? What is this, a liquid encryption party? The Vigenère cipher is the way to go, no doubt about it.
GE
Gerald 1 year ago
↳ replying to Arlene
Stream ciphers may be fast, but Vigenère cipher offers a unique way to encrypt messages.
RO
Rolf 1 year ago
↳ replying to Arlene
Block ciphers and transposition ciphers are also popular methods of encryption.
FA
Fatima 1 year ago
↳ replying to Arlene
Transposition ciphers can be tricky to decrypt, but Vigenère cipher is more versatile.
DE
Deeanna 1 year ago
↳ replying to Arlene
Block ciphers are also quite secure, but Vigenère cipher has its own charm.
BE
Bette 1 year ago
↳ replying to Arlene
Stream ciphers are actually quite different, they encrypt data bit by bit instead of by blocks.
NI
Nicholle 1 year ago
↳ replying to Arlene
I agree, the Vigenère cipher is a classic and effective encryption method.
EL
Elouise 1 year ago
↳ replying to Arlene
I agree, the Vigenère cipher is a classic and effective encryption method.
MI
Mila 1 year ago
The Vigenère cipher, of course! It's the 'Swiss Army Knife' of ciphers. Now, if only I could remember how to spell 'Vigenère'...
AU
Audra 1 year ago
↳ replying to Mila
Yes, the Vigenère cipher uses a keyword to encrypt the text.
PA
Patrick 1 year ago
↳ replying to Mila
I think the Vigenère cipher is the answer to the question.
XE
Xenia 1 year ago
↳ replying to Mila
I agree, the Vigenère cipher is quite versatile.
ES
Estrella 1 year ago
Hmm, a series of Caesar ciphers... Gotta be the Vigenère cipher! I bet the keyword is something like 'password' or 'abc123'.
KE
Kenneth 1 year ago
↳ replying to Estrella
Yes, the Vigenère cipher encrypts text using a series of Caesar ciphers based on the letters of a keyword.
DA
Dannette 1 year ago
↳ replying to Estrella
I think you're right, the Vigenère cipher uses a keyword to encrypt the text.
TE
Tequila 1 year ago
Block ciphers? Nah, that's not it. I think I'm going with the Vigenère cipher. Sounds fancy, must be the correct answer.
ES
Esteban 1 year ago
I'm not sure, but I think Vigen re cipher is the right choice because it uses a keyword to create different Caesar ciphers.
LA
Laura 1 year ago
I agree with Janna, Vigen re cipher makes sense for this type of encryption.
IR
Iraida 1 year ago
The Vigenère cipher is the answer! It uses a keyword to create a series of Caesar ciphers. I'm pretty sure about this one.
JA
Janna 2 years ago
I think the answer is C) Vigen re cipher.
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