[PDF] Top 20 Multi-Party computation with omnipresent adversary

... the adversary is poly- nomially ...the adversary is able to solve efficiently (in polynomial time) a problem that is believed to be ...the adversary, they cannot break the system better than by ... See full document

... the adversary to make all its secret key queries before receiving the challenge ciphertext whereas in the adaptive variant, there is no such ...the adversary obtains an unbounded number of ciphertexts ... See full document

... the adversary obtains output while an honest party does ...the adversary to lead the protocol to a deadlock where no party receives output however the honest parties have wasted resources by ... See full document

... Our computational implementation of a symbolic protocol is a probabilistic polynomial-time algorithm that expects as input the symbolic protocol Π , a set of deterministic polynomial-time algorithms A for the ... See full document

... secure computation, there are several different ad- versarial models one can ...static adversary who decides which parties to corrupt before execution of the protocol ...the adversary may adaptively ... See full document

... Catalano–Fiore–Nizzardo homomorphic signature scheme [11]: Both our FDC and the homomorphic signature scheme presented in [11] are based on the FDHI assumption, and indeed our FDC builds on this homomorphic signature ... See full document

... the adversary) are modeled as interactive Turing ...trusted party sending the desired results to the ...any adversary attacking the real protocol can be used to construct a corresponding ideal ... See full document

... an adversary that behaves completely honestly in the protocol itself, however, after each round of the protocol it corrupts roughly ω(log n) ...honest party, the simulator is obliged to provide to the ... See full document

... of adversary lies somewhere between those of semi-honest and malicious ...an adversary that wishes not to get caught cheating will refrain from attempting to cheat, lest it be caught doing ...the ... See full document

... However, Yao ’ s garbled circuit is only secure in 2-party semi-honest scenarios, which is not sufficient for practical use. Usually, there are more than 2 parties or participants engaged in the same computing ... See full document

... one party and a different value v 0 6= v to another ...an adversary to cause some parties to ...secure computation with abort [15] (and even UC ...every party P i sends (echoes) the value that ... See full document

... MPC allows a set of n mutually distrustful parties to privately com- pute any given function across their private inputs, even if up to t < n of these participants are corrupted and controlled by an external ... See full document

... the adversary can potentially create a set of shares different from those generated by the multiplication protocol but so that the sacrifice check passes; this can be viewed as re-randomising shares, as was ... See full document

... an adversary; check the configuration and correct setting of each device; detect whether malicious software is loaded into sensor nodes; verify the integrity of the code; perform secure code updates and ensure ... See full document

... secure multi-party computation systems are typically characterized as providing a certain level of security against either a semi-honest, covert, or malicious adversary ...input party ... See full document

... Random Beacons Our protocol makes use of a random beacon. Although we do not detail the precise construction in this paper, we also cannot simply assume one exists or we would be no better o than assuming a CRS. A random ... See full document

... one party at a time until that resolution protocol is ...the adversary cannot prevent the honest parties from reaching the TTP before the specified time interval ...the adversary can enforce on the ... See full document

... Achieving a simulatable protocol. A harder problem is how to simulate the output phase in which ciphertexts containing the outputs are decrypted. In the simulation we cannot expect that these ciphertexts are correctly ... See full document

... We can show that the scheme of [PW10] is one-one CCA secure as follows (by using essentially the same proof as the proof of its non-malleability). Recall that a commitment scheme is one- one CCA secure if it is hiding ... See full document

... Suppose a data holder has released multiple views of the same underlying raw data data. Even if the data holder releases one view to each data recipient based on their information needs, it is difficult to prevent them ... See full document