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Which of the following types of ciphers operates on a group of bits rather than an individual character or bit of a message?
Suggested Answer: A
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encryption process, a block cipher might take an n bit block of plaintext as input, and output a corresponding n bit block of the ciphertext. The
exact transformation is controlled using a secret key. While decrypting, the decryption algorithm takes the n bit block of the ciphertext
together with the secret key, and yields the original n bit block of the plaintext.
Answer options B, C, and D are incorrect. All these three types of ciphers operate on an individual character or bit of a message.
12 comments · newest first
BO
Bobbie
11 months ago
Yup, block ciphers are the way to go for secure data!
SH
Shanda
12 months ago
Classical ciphers are just old-school, not block ciphers.
AS
Asha
12 months ago
Wait, I thought stream ciphers did that too?
JU
Julie
12 months ago
Totally agree, it's definitely block ciphers!
LO
Lorita
1 year ago
Block ciphers work on fixed-size groups of bits.
DA
Dannie
1 year ago
I have a vague memory of classical ciphers being more about letters and symbols, so I think they wouldn't be the answer here.
ES
Estrella
1 year ago
I'm a bit confused because I feel like both block and stream ciphers deal with bits, but block ciphers are the ones that group them together.
RE
Rex
1 year ago
I remember practicing with a question about different cipher types, and I think block ciphers were definitely mentioned as working on larger data chunks.
ED
Edison
1 year ago
I think block ciphers operate on groups of bits, but I'm not completely sure if that's the only type that does.
MA
Malcolm
1 year ago
This seems straightforward enough. I'll just take a quick look at the images, consider the options, and go with the one that seems most logical.
DE
Denny
1 year ago
Hmm, this is a tricky one. I know SAS Data Integration Studio has different deployment options, but I'm drawing a blank on the specifics. I'll have to review my notes to make sure I get this right.
RE
Reuben
1 year ago
Hmm, this one seems tricky. I'll need to think it through carefully.