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GIAC GISP Exam - Topic 3 Question 81 Discussion

Fill in the blanks with the appropriate values.Twofish symmetric algorithm operates on _______ -bit blocks and can support a key length of up to ________ bits.
A) 128,256

GIAC GISP Exam - Topic 3 Question 81 Discussion

Actual exam question for GIAC's GISP exam
Question #: 81
Topic #: 3
[All GISP Questions]

Fill in the blanks with the appropriate values.

Twofish symmetric algorithm operates on _______ -bit blocks and can support a key length of up to ________ bits.

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Suggested Answer: A

by Lovetta at Jan 23, 2026, 09:51 AM

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Maurine
1 month ago
Agreed! It’s a solid algorithm for encryption.
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Evette
2 months ago
I remember studying that. It’s definitely 128 bits and max 256 bits.
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Raymon
2 months ago
Yeah, that sounds right! Twofish is known for that.
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Dahlia
2 months ago
I think it's 128-bit blocks and 256 bits for the key.
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Daron
4 months ago
Yup, 128 and 256, that's correct!
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Lenna
4 months ago
Wait, is it really 256 bits? I thought it was less.
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Rolland
4 months ago
Totally agree, Twofish is solid.
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Johnetta
4 months ago
It can support a key length of up to 256 bits!
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Devorah
4 months ago
Twofish operates on 128-bit blocks.
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Ronna
4 months ago
256-bit blocks and 256-bit keys. Ah, the good old days when we used to encrypt our messages with a pen and paper.
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Arletta
5 months ago
128-bit blocks and 256-bit keys. Sounds secure enough to keep my cat photos safe.
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Wava
5 months ago
256-bit blocks and 512-bit keys. Wow, that's a lot of bits! My calculator can't even handle that many.
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Chan
5 months ago
64-bit blocks and 128-bit keys. Wait, is this the new encryption for my secret cookie recipe?
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Pearly
5 months ago
128-bit blocks and 256-bit keys.
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Armanda
5 months ago
I definitely recall that Twofish uses 128-bit blocks, but the maximum key length is tricky. I think it’s 256 bits, but I could be wrong.
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Margart
5 months ago
I might be mixing it up, but I feel like Twofish has a block size of 128 bits. The key length... maybe it goes up to 192 bits?
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Craig
6 months ago
I remember practicing with symmetric algorithms, and I believe Twofish uses 128-bit blocks and can support up to 256 bits for the key length.
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Antonio
6 months ago
I think Twofish operates on 128-bit blocks, but I'm not entirely sure about the key length. Was it 256 bits?
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Carlee
7 months ago
Okay, I think I've got it. Twofish operates on 128-bit blocks and can support key lengths up to 256 bits. I'll write that down and double-check before submitting.
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Bernadine
7 months ago
Wait, was it 128-bit blocks or 256-bit blocks? And the key length, was that 128 bits or 256 bits? Hmm, I'm getting a bit mixed up here. Let me review my notes quickly.
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Margery
7 months ago
I've got this! Twofish is a 128-bit block cipher that can use keys up to 256 bits long. I'm confident I can fill in those blanks correctly.
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Lanie
7 months ago
Okay, Twofish is a symmetric algorithm, so it operates on fixed-size blocks. I'm pretty sure the block size is 128 bits, but I'll have to double-check that. As for the key length, I believe it can support up to 256 bits, but I'm not 100% certain.
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Arlette
7 months ago
Hmm, I think I remember learning about Twofish in my cryptography class, but I'm a bit fuzzy on the details. Let me think this through step-by-step.
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Herschel
29 days ago
Exactly! Twofish is pretty flexible with key lengths.
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Shala
1 month ago
Yeah, and it can support keys up to 256 bits, right?
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Juan
1 month ago
I believe Twofish operates on 128-bit blocks.
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