Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Circuit-Free General-Purpose Multi-Party Computation via Co-Utile
  Unlinkable Outsourcing   Multiparty computation (MPC) consists in several parties engaging in joint
computation in such a way that each party's input and output remain private to
that party. Whereas MPC protocols for specific computations have existed since
the 1980s, only recently general-purpose compilers have been developed to allow
MPC on arbitrary functions. Yet, using today's MPC compilers requires
substantial programming effort and skill on the user's side, among other things
because nearly all compilers translate the code of the computation into a
Boolean or arithmetic circuit. In particular, the circuit representation
requires unrolling loops and recursive calls, which forces programmers to
(often manually) define loop bounds and hardly use recursion. We present an
approach allowing MPC on an arbitrary computation expressed as ordinary code
with all functionalities that does not need to be translated into a circuit.
Our notion of input and output privacy is predicated on unlinkability. Our
method leverages co-utile computation outsourcing using anonymous channels via
decentralized reputation, makes a minimalistic use of cryptography and does not
require participants to be honest-but-curious: it works as long as participants
are rational (self-interested), which may include rationally malicious peers
(who become attackers if this is advantageous to them). We present example
applications, including e-voting. Our empirical work shows that reputation
captures well the behavior of peers and ensures that parties with high
reputation obtain correct results.

26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
24
The categories of this paper are: dg-ga
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org