Efficient and Generic Methods to Achieve Active Security in Private Information Retrieval and More Advanced Database Search

Probabilistically Checkable Arguments for all NP

AprèsSQI: Extra Fast Verification for SQIsign Using Extension-Field Signing

Trapdoor Memory-Hard Functions

credentials from various issuers. Another vital property is issuer hiding, ensuring that the issuer's identity remains concealed, revealing only compliance with the verifier's policy. This prevents unique identification based on the sole combination of credential issuers. To date, there exists no AC scheme satisfying both

Formal Analysis of Access Control Mechanism of 5G Core Network

rrespective of any auxiliary input

auxiliary input is implicit in the definitionsince computational indistinguishability with respect to non-uniform adversaries is required.

randomized functionality f (x, y)

≡

plaintext length

auxiliary information

Formally,every party considered has a security parameter tape upon which the value 1 n is written.

The implementation of ByzzFuzz requires

small-scope message mutations

synchronous reactive programming language and frameworkfor designing, testing, and verifying distributed algorithms

store

If a correct replica executes an operation op in aview v, no correct replica will change to a new view withoutexecuting o

ch we sketch here. Giv

not ensure that all correct replicas execute all operationsin the same orde

show operationseventually complete

Even state transfer cannot help the affected client for a

the clientcannot accept a reply with less than 2f +1 matching responses

operation (say, an update) is consideredcommitted and ready for execution when it is confirmed

wait for 2f + 1 matching replies

n − 2f = f + 1 correct replicas execute every request and that

t all committed operations will be committed at f + 1

the dealer can either use anon-interactive zero-knowledge (NIZK) proof constructed using the Fiat-Shamirheuristic as in [Sch99] (resulting in a construction in the ROM under the DDHassumption) or have the parties do pairing based checks as in [HV09] (resultingin a construction in the plain model under the DBS assumption)

orth a notion called reliable broad-casted seeding (Seeding) and construct it from aggregatable PVSS

That lower bound turned out to be very robust

World 3:

main proof technique is to construct an invariant.

beingefficiently realizable in the secure setting

nforce constraints such asL2 and L∞ bounds on high-dimensional encrypted modelupdates

general-purpose secure computation techniques (e.g.,generic MPC

These have beenstudied to a lesser extent, and we address this gap in thispape

one can reconstructsensitive data from clients’ local datase

tant, i.e., 2, whereas the Maxpool protocols in Falcon [12],SecureNN [11], and CryptFlow [17] require 104, 72, and

. Existing works inthe literature mostly fall into two categorie

. Intuitively, communication is the bottleneckfor all four comparison methods

. Currently, MPC-based compar-ison (CMP) protocols could be categorized into four typ

pically outsource sensitive data to cloudML services.

This would be exacerbated in com-mercial deployment settin

휎표푟 -sentences that holdover the integers is undecidable

While all axiomatizable theories of non-linear arithmetic are incomplete,LIRR is weak by design (relative to say Peano arithmetic), trading power for tractable automatedreasoning:

reports “we foundZ3’s theory of nonlinear arithmetic to be slow and unstable;

This paper proves the following main results

transforming the proofs of undecidability to witnessfunctions.

we analyze the “computable approximability” of different problems and providescomputable imprecision witnesses for decidable approximations of certain undecidable problems.

there exist computable functions that take as input the implementation (source code) of adecidable approximation and output a witness on which the approximation is imprecise.

UDQ-unique