Linked Questions
10 questions linked to/from Difference between stream cipher and block cipher
-2
votes
0
answers
476
views
Why is there a strong distinction between stream and block ciphers? [duplicate]
If I don't err, in the literature a stream cipher is one in which each plaintext bit is processed individually, commonly via xor-ing with one bit of a random or pseudo-random bit stream, while a block ...
- 1,312
18
votes
4
answers
3k
views
Can you make a hash out of a stream cipher?
A comment on another question made me wonder about something:
Assume you're on a rather constrained platform — say, a low-end embedded device — with no built-in crypto capabilities, but ...
- 45.9k
14
votes
3
answers
5k
views
Converting a stream cipher into a block cipher
The well-known Counter-Mode (CTR) mode of operation for a block cipher essentially converts any block cipher into a stream cipher. Is there a way to do the reverse? In other words, given a "good" ...
- 4,128
6
votes
2
answers
4k
views
Is the CBC mode of operation a stream cipher mode?
I am taking a class on security systems. My professor considers CBC to be a stream cipher mode, like CFB and OFB. Most sources I have read do not agree with this, so I asked my professor about this, ...
user41777
2
votes
3
answers
629
views
Terminology: Is a block cipher in counter mode still considered a block cipher or is it classified as a stream cipher?
I'm confused about what terminology to use. I see people referring to such a cipher-MOO combination using both terms.
- 511
4
votes
1
answer
1k
views
stream cipher and block one, which one is faster to encrypt/decrypt?
As the title says, I would like to know which one is faster. I read in some book it indicates the stream is faster since it encrypts one bit at a time; the others show block is faster since it is ...
- 41
7
votes
1
answer
629
views
Pseudo random generator vs block encryption, which is faster?
If one wishes to encrypt one can either use a pseudo random generator to generate a long sequence and then xor it with plaintext, similarly he can use the seed as key to encrypt the plaintext using ...
- 327
-2
votes
1
answer
894
views
How could I test my own Cipher? [closed]
I recently developed a new cryptographic algorithm. I just initiated with just nothing in mind. But being near to completion (though my algorithm is constantly developing. Now it is version 11.02), I ...
- 1
3
votes
2
answers
199
views
Stream Ciphers -- Need clarification on their benefits in practice
Compared to a block cipher which encrypts 16 bytes at a time, stream ciphers can encrypt a byte at a time. I am curious about which applications would immensely benefit from the ability to encrypt a ...
- 1,080
0
votes
1
answer
58
views
Stream Ciphers clarification
I am confused about stream ciphers a little so I just wanted to clarify. We have a key that's lets say 2 bits. I have a message that's 8 bits. I used a pseudorandom generator that would add 6 bits to ...
