157 reputation
7
bio website
location France
age 23
visits member for 1 year, 9 months
seen Nov 17 at 5:45

Hello curious reader !

I am a student in telecommunication engeneering at the time. I'm very interested in computer science. I do have a favorite programming language ... Yes you got it, it's C ! But I also had a touch with a couple of others (C++, Java, Python < I really enjoyed my little introduction about Python >), but since my growing interest in the Linux Kernel, I think I'll stick with the good old C for a while.

Lots of fun on SE for you all !


Apr
8
comment Understanding one-way hash functions construction
I don't claim to design my own hash function ! I just wanted to understand how the designers of such tools make their choices (I mean in a global scale). By the way, excellent guidance that I will follow right away
Apr
5
comment Understanding one-way hash functions construction
@fgrieu What you said is exactly the kind of things I am looking for. I read a bit the review about sponge functions by the creators of Keccak and heard about the HAC. I also found Schneier's book by googling a little but the character does not make me feel any sympathy ...
Apr
5
comment Understanding one-way hash functions construction
@D.W. I am aware that they are very different although they can be linked together and the fact is ... I am interested in both ! But for the sake of simplicity, I will prioritize hash functions this time
Apr
5
comment Understanding one-way hash functions construction
@mikeazo, actually it's a bit related to the second hypothesis you were formulating. I edited the question
Mar
28
comment How to design a practical and secure MAC scheme?
Every day I get more impressed by what crypto people can think of ... That's brilliant. The paper about cold boot attacks you linked is also very impressive ! I suggest you edit your answer to append that last comment since it is a witty advice.
Mar
28
comment How to design a practical and secure MAC scheme?
The scheme I described only authenticates a $PEB(p) \leftrightarrow LEB(v,l)$ mapping, not the actual content of the block. I might add also add tags to authenticate the data written in the block. Could you explain more precisely the flaw induced by the use of $K$ for both tags ?
Mar
28
comment How to design a practical and secure MAC scheme?
The fields involved in my HMAC scheme are fixed length, I even mentioned their respective length ;). I have read somewhere that the same key should not be used to produce several different tags. Should I use key derivation techniques instead of keeping on using the raw K ?
Mar
27
comment What is the probability of breaking the AES algorithm?
Please note that a block cipher can be used with several modes of execution. A few examples : ECB (Electronic CodeBook), CBC (Cipher Block Chaining), CTR (CounTeR mode) ... In addition to the AES security itself, the mode you pick up can also have some specific security concerns.
Feb
8
comment AES-CTR vulnerability to cryptographic oracle
Very instructive and useful advice, thanks
Feb
7
comment AES-CTR vulnerability to cryptographic oracle
Perfect, thanks a lot !
Feb
7
comment AES-CTR vulnerability to cryptographic oracle
Thanks, that is exactly what I needed to know. Nevertheless, is there an available study that explain why it does not leak anything about the key ? I would be eager to read such a paper
Feb
7
comment AES-CTR vulnerability to cryptographic oracle
@Maeher My bad, the statement was too fuzzy, it is now edited.
Feb
7
comment AES-CTR vulnerability to cryptographic oracle
I edited my question to give you more information. Could you suggest me some further reading on the subject ?