Reputation
691
Top tag
Next privilege 1,000 Rep.
See votes, expandable usercard
Badges
4 15
Impact
~26k people reached

  • 0 posts edited
  • 0 helpful flags
  • 22 votes cast
Jan
19
comment Does the time to evaluate a hash function depend on the function input size?
Thanks for your answer, but it is not curious that you implement a random oracle with a real world hash function... ?
Jan
14
asked Does the time to evaluate a hash function depend on the function input size?
Dec
4
awarded  Popular Question
Nov
19
awarded  Popular Question
Nov
1
comment Existence of a random function under constraints
@fgrieu Thanks. There were errors in my post. There are two values $C_1$ and $C_2$. I've updated it.
Nov
1
revised Existence of a random function under constraints
added 19 characters in body
Oct
31
comment Existence of a random function under constraints
@fkraiem If you want I can update my post by saying that the functions are chosen at random in the set of functions from $\{0,1\}^N$ to $\{0,1\}^N$.
Oct
31
asked Existence of a random function under constraints
Sep
24
awarded  Notable Question
Sep
2
comment AES decryption vs encryption speed
Thanks "So It does not matter which one you use in CTR, both should give essentially same performance." If AES-decrypt is faster than AES-encrypt then CTR will be faster when used with AES-decrypt ,won't it ?
Sep
2
asked AES decryption vs encryption speed
Sep
2
comment Does CTR mode yield a PRF?
@Yehuda Lindell If we can distinguish it from a function drawn uniformly at random, then it is a pseudo-random function, isn't it ? Maybe there is something that I don't see...
Sep
1
comment Does CTR mode yield a PRF?
It seems to me that when $k$ is random $G(k)$ is pseudo-random. For what reason $G$ is not a prf ? Thank you in advance.
Aug
29
comment Does CTR mode yield a PRF?
A PRG is not a PRF ?
Aug
29
comment Does CTR mode yield a PRF?
Thanks for the answer and the comments. I've updated the post. The idea looks like the one proposed by Richie.
Aug
29
comment Does CTR mode yield a PRF?
Thanks for your answer. I've updated the post.
Aug
29
revised Does CTR mode yield a PRF?
added 331 characters in body
Aug
26
awarded  Popular Question
Aug
26
asked Does CTR mode yield a PRF?
Aug
21
comment Cryptography and FPGA
Thanks very much Bristol