The multiparty-computation tag has no wiki summary.
10
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2answers
247 views
Why use a 1-2 Oblivious Transfer instead of a 1 out of n Oblivious Transfer?
When initiating an oblivious transfer, why would someone use a 1-2 oblivious transfer rather than going for an 1 out of n oblivious transfer? Perhaps a slight time overhead for the extra message ...
3
votes
1answer
159 views
what is this kind of multi party computation
The classic multi party computation protocols are defined around " Untrusted parties trying to compute something together"
But is there a crypto abstraction for , "Trusted parties trying to compute ...
2
votes
1answer
46 views
Equivalents to a physical hat+shaking?
I would like a multiparty protocol, secure in the honest-but-curious model at least, but hopefully other situations as well, that can do the following: every party among $\{P_1, P_2, \ldots P_n\}$ ...
2
votes
2answers
346 views
Public key generation in homomorphic encryption schemes
Is there any way to effectively generate valid distributed public key in schemes like ElGamal or Benaloh for a number of participants? There's no need in private keys since there's no intent to ...
2
votes
2answers
216 views
secure multiparty computation for multiplication
Suppose there are $N$ parties $p_j$, each with a binary $b_j\in{\{0,1\}}$. The problem needs to compute the multiplication of number of ones times that of zeros, that is, ...
2
votes
1answer
150 views
Exact mathematical definition of simulation based security?
I've been trying to understand cryptographic protocols and how to define their security. The problem is that while I can understand what the intuitive definition says, I have trouble understanding how ...
2
votes
1answer
70 views
Addition with Shamir secret sharing
When performing Shamir secret sharing I'm trying to find $z_i$, such that $z = x + y$. Where $n = 6$ and $t = 3$.
I believe this would be the correct solution (correct me if I'm wrong):
Each party ...
1
vote
2answers
101 views
Relation between Threshold Cryptosystem and Secure Multiparty Computation ?
Is there any relation between secure multiparty computation and threshold cryptosystem ?
1
vote
1answer
138 views
Real world use cases of Multi Party Computation
Most of the research papers give imaginary applications of multi party computation.
Either they talk about millionare's problem or two or more corporates willing to compute some Intrustion detection ...
0
votes
2answers
122 views
homomorphic encryption special case of multi party computation?
I read that Fully Homomorphic Encryption schemes are special case of Secure MPC in page no 3. Especially , generalization of two party computation problems stated by Yao
But is there any additional ...
0
votes
2answers
74 views
Practical implementations of Multiparty computations
Are there any practical implementations and or software platforms to prototype applications based on MPC ?
0
votes
1answer
113 views
Are there any multiparty homomorphic encryption schemes?
Are there any multiparty homomorphic encryption schemes ?
Most of the literature is about two party schemes .
Is there any generalization made for n party ?
0
votes
0answers
73 views
Is this a secure multiparty protocol?
I am facing the following situation and i am trying to break down the problem into some specific cryptogrphic primitives.
There is a function F that takes as input a bit string and produces a ...
