mikeazo

7,916 reputation

1938

bio	website	pwnhome.wordpress.com
	location
	age
visits	member for	1 year, 9 months
	seen	1 hour ago
stats	profile views	68

I like crypto. Need I say more?

	7,916 reputation	bio	website	pwnhome.wordpress.com	visits	member for	1 year, 9 months
1938 badges		location			seen	1 hour ago

summary answers questions tags badges favorites bounties reputation activity

1,177 Actions

suggestions reviews revisions comments badges posts accepts all

Jun 12	comment	What's efficient MPC protocol for determining if sum's bigger than y? My guess is that adding packed ss to Viff would be easy. I am not very familiar with FaiplayMP.
Jun 12	comment	What's efficient MPC protocol for determining if sum's bigger than y? @poncho, thanks for the update. I've seen a number of cases recently where generic MPC is faster than specialized protocols (often due to public key crypto), which is why I asked. Are you aware of any specialized millionaire problem solutions which do not use public-key crypto?
Jun 12	reviewed	Approve suggested edit on Difference entity authentication and implicit key authentication
Jun 12	reviewed	Approve suggested edit on Difference entity authentication and implicit key authentication
Jun 12	comment	What's efficient MPC protocol for determining if sum's bigger than y? @poncho, do you know if specialized solutions to the millionaire problem are faster than generic MPC solutions? Or which millionaire problem solution is the most efficient?
Jun 12	comment	What's efficient MPC protocol for determining if sum's bigger than y? In that case, I'd test the two methods and see which works best. One question, would you be able to run the function on thousands of inputs in parallel? I came across this recently, don't know all the details yet, and don't believe there are any public implementations, but there is a way to run MPC in a SIMD (single instruction, multiple data) fashion. See section 8.4 of Damgard's book.
Jun 11	comment	What's efficient MPC protocol for determining if sum's bigger than y? Not sure. For such a simple function, it probably doesn't matter much. Remember with Viff you will need at least 3 parties (4 for the malicious protocol). They don't all have to have inputs though.
Jun 11	revised	Can any one explain Circuit Privacy using fully homomorphic encryption from Gentry's thesis? deleted 90 characters in body
Jun 11	answered	What's efficient MPC protocol for determining if sum's bigger than y?
Jun 10	comment	What's efficient MPC protocol for determining if sum's bigger than y? Can you describe in more detail who performs the computation and who needs to learn the output? Also, how many parties should be involved, just 2? How large are the inputs (32 bit, 64 bit, 2000 bits)?
Jun 8	comment	Proofs of security methodologies @user7060, do you plan on updating the question to address the concerns I raised? If not, let me know and maybe I'll update it.
Jun 7	answered	Proofs of security methodologies
Jun 7	comment	Why is TLS SRP verifier based on user name? Yes, salt should be randomly generated, but what if the server is malicious? It doesn't have to play by the rules. In this case the server can mount the multi-target attack spoken of.
Jun 7	comment	Proofs of security methodologies Literature recommendations and reference requests are off topic here. I'll leave it open for now, but please edit to make more on topic. That said, I think there is a very good question that could be asked here. Instead of asking for references, I'd suggest editing the question to ask what the various proof techniques are, their strengths/weaknesses, etc. In that I think you will get lots of good references plus some good initial information to help you on your journey.
Jun 5	comment	Secure use-cases of block cipher with 64-bit block size would you like to edit the question to include this?
Jun 5	awarded	Enlightened
Jun 4	awarded	Nice Answer
Jun 4	comment	How to calculate byte length of a hash Your question really has nothing to do with cryptography other than the fact that you use an MD5 digest. Looks like you got your answer in the comments. That said, I am going to close the question.
Jun 4	comment	Secure use-cases of block cipher with 64-bit block size Is there a specific mode of operation you are interested in?
Jun 4	comment	Secure use-cases of block cipher with 64-bit block size I edited your quesiton and tried to make it more concrete. I hope I didn't lose the original intent of the question. If so, feel free to revert back to your original question. Hopefully this more concrete question (if still what you were looking for) will make the question better.