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Assume $n$ parties each has a secret vector $v_i$,How to compute the value of $\sum v_i$ correctly without disclosing the secret vectors under the malicious adversary model?

Unconditional zero-sharing was presented in the following paper Practical Multi-party Private Set Intersection from Symmetric-Key Techniques, by Vladimir Kolesnikov, Naor Matania, Benny Pinkas, Mike …

Vector Oblivious Linear Evaluation(VOLE) allows a sender and a receiver obtain additive secret share about the product of a scalar and a vector. The receiver sends a random scalar $x$ to VOLE as input …

I'm relatively new to this topic, and I have a question that might seem basic. I appreciate your patience. In most PSI schemes(2 party or multi party),the intersection result is always output by only …

Suppose Alcie,Bob,and Charlie each has a secret value $a,b,c$ respectively. they want to compute a value $r\cdot (a+b+c)$ together. $r$ is a random value, and all parties know nothing about it. I trie …

In MPC，it is common to use hash to extract the real input of malicious adversary under RO model. But I wonder why the adversary have to do hash queries rather than just select random values as the has …

According to this paper , Gordon, D., Hazay, C., Katz, J., Lindell, Y.: Complete fairness in secure two-party computation. In: Proc. 40th Annual ACM Symposium on Theory of Computing (STOC) (2008) th …

Suppose Alice,Bob,Charlie each has a value $a$,$b$,$c$, they want to obtain $a+b+c$ without disclosing their value. I wonder if it is a successful attack when a malicous adversary who corrput Alice mo …

Is there any PSI protocol which supports multi party can obtain the intersection?

I konw a fact that it is impossible to achieve complete fairness in 2-party protocol from Cleve's paper.But i wonder if it is possible to achieve fairness in multi-party setting when the number of hon …