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I like crypto. Need I say more?


2h
comment Brute force against computational security
-1, while the answer may be contained in here, it is not obvious. A good answer should be clear and concise.
2h
comment Brute force against computational security
Define computationally secure. Do we have any cryptosystems that are proven computationally secure?
2h
comment Obliviously computing the Least common multiple of two poylnomials
Why not FHE? You could do a secure 2-party computation.
Dec
23
comment Homomorphic Encryption: how does the equality test on ciphertexts work?
You could likely do it with some sort of interactive protocol (think Zero-knowledge proof).
Dec
19
comment how can I understand nonlinear coding for error detection
I will give it a try. Unfortunately ECC and ECC (that is elliptic curve cryptography and error correcting codes, respectively) are not my strong areas. What I can definitely do is take a look at the papers and try to make the question a little more self-sufficient while keeping the scope narrow enough.
Dec
19
comment how can I understand nonlinear coding for error detection
I updated the links to two university links. Turns out both papers are available on their respective author's universities' websites.
Dec
19
comment What is the fixed point attribute of DES (when used with weak-keys)
You want an explanation of why DES has weak keys or of what the issue is with having weak keys? I'm assuming the former (as the latter should be obvious), but your question is a little unclear.
Dec
18
comment how can I understand nonlinear coding for error detection
I think what would really help your question would be to post some of the material from those two papers inline. It is always best when a question is stand alone. Readers should not be required to read external resources in order to understand your question.
Dec
18
comment Security of DES P_BOX
Straight up reference requests are off-topic on this site. I edited your question to make it more on-topic. If I changed your original intent, please let me know or feel free to edit yourself.
Dec
17
comment Perfect secrecy of a crypto system
I don't really see a question. Just a command. I.e., "prove this for me" instead of "how would I prove this". That said, I believe the latter has been explored on here at least once.
Dec
17
comment Security considerations on using key derivation to create one-time keys for block ciphers
I count about 5 questions packed into this one question. It could be helpful to break them out into a few (stand-alone) questions.
Dec
16
comment Block cipher to encrypt 8 bytes/64 bits - Use 64 or 128 bit cipher?
@fgrieu, that is if the same key is used.
Dec
16
comment Decrypt all RSA ciphertexts if you can break 1% of them
@CodesInChaos I was thinking the same thing when I saw this. I remember answering a similar question, but can't find it.
Dec
15
comment How to replicate GPA's Sign and Compress option on command line in Windows
This is not the right site for this. I'll migrate to SuperUser.
Dec
15
comment What is the difference between uniformly and at random in crypto definitions?
@GuutBoy, yes you are correct. I suppose I could have used a weighted coin or a loaded die for the example.
Dec
15
comment What is the difference between uniformly and at random in crypto definitions?
Updated to hopefully clarify some. Thanks for the comments on how to improve my answer.
Dec
15
comment What is the difference between uniformly and at random in crypto definitions?
@GuutBoy Uniform is a distribution over a set, no? Remember, I defined my set to be 1-5.
Dec
15
comment What is the difference between uniformly and at random in crypto definitions?
@FlorianBourse, agreed, but if you knew my process for choosing the sequence...
Dec
15
comment electronic voting system
I'm going to move this to Security.SE. It is better suited for questions like this.
Dec
15
comment cipher inside and image
I suggest you take a look at this info from our help center.