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May
27
comment (n,n) Shamir secret sharing
@user153465 In other words, you have to remember, no one gets paid to write answers on here. We do it of our own good will. I personally think the answers on the linked question are pretty good (I am biased though since I wrote one). If they aren't good enough for you, though, you can, at the very least, explain exactly why. If all you are looking for is for someone to formally prove it for you, I doubt very many people here will be willing to take the time to do that. Your profile says you are a PhD student. I gave some hints on how to prove it in the comments. That should help a ton.
May
27
comment Want to use ECC but am clueless
@zakshaks I can migrate the question to Super User if you would like.
May
27
comment (n,n) Shamir secret sharing
@user153465. I think DrLecter's point is that the question is a duplicate. Whether or not the duplicate question has a correct answer is irrelevant to the discussion here. There are other ways to try to get better answers on a question than to post a duplicate question. For example, you can (once you have more rep points here) offer a bounty. You can comment on the answers to explain why they are lacking. You can post a better answer yourself.
May
27
revised Shamir Secret sharing - Can share generator keep x values secret?
deleted 3 characters in body
May
27
comment Can I use Shamir's secret sharing scheme for multiplicative homomorphism for secure multiparty computation?
@nie_11, any number of secrets can be multiplied using this process. You just simply do them 2 at a time. Remember though that the threshold must be no more than half of the total number of parties.
May
26
revised Generating Encryption Keys from Biometric Fingerprint Templates
added 1661 characters in body
May
26
answered Generating Encryption Keys from Biometric Fingerprint Templates
May
26
answered How can I perform matching on an “encrypted- fingerprint feature matrix” using Fully Homomorphic Encryption?
May
23
comment Problem with anonymously merging information from distributed sources
It sounds like the long random salt is generated anew for each session. If it is long enough, then the server that does the merging shouldn't be able to reverse it without knowing the salt.
May
23
comment Problem with anonymously merging information from distributed sources
Who issues the identifiers? You could always mix in a secret key to the "hash" you send to the third system. If the secret is known only by the first two systems and is sufficiently long (at least 128 bits), the third system wouldn't be able to figure out the inverse mapping.
May
22
comment Symmetric-Key Based authentication
@Neelam, I'm having a hard time seeing what your question is. Are you just wanting one of us to answer i) and ii) for you or are you having trouble understanding the protocol?
May
22
revised Symmetric-Key Based authentication
deleted 184 characters in body; edited tags
May
21
revised Shamir Secret sharing - Can share generator keep x values secret?
rolled back to a previous revision
May
21
reviewed Reject Shamir Secret sharing - Can share generator keep x values secret?
May
21
revised Shamir Secret sharing - Can share generator keep x values secret?
rolled back to a previous revision
May
21
reviewed Reject Shamir Secret sharing - Can share generator keep x values secret?
May
21
comment Shamir Secret sharing - Can share generator keep x values secret?
@user13676, not sure. I'd have to think about it. If the underlying field is large enough, it is likely not a problem.
May
21
comment Is anyone aware of Du atallah multiplicative secret sharing scheme for dot products for > 2 party scenario?
Have you contacted the authors of the paper?
May
21
comment Shamir Secret sharing - Can share generator keep x values secret?
@user13676 Given the shares, each possible secret value (reconstructed using some vector of x values) must be equally likely. Show that this holds, and you will formally prove that it is secure.
May
21
comment Shamir Secret sharing - Can share generator keep x values secret?
@user13676 if you do ask another question on the site, I'd suggest keeping it as generic as possible. Basically it seems like you want outsourced computation where privacy is preserved even if all the computation servers are malicious.