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After the work of Impagliazzo and Rudich (STOC, 1989), the black box framework has become one of the main research domain of cryptography. However black box techniques say nothing about non-black box ...
RIPEMD-160 is a hash function published in 1996, which shares similarities with other hash functions designed in this time-period like MD4, MD5 and SHA-1. However, for RIPEMD-160, no (semi-free-start)...
We present a novel secure searchsecure search protocol on data and queries encrypted with Fully Homomorphic Encryption (FHE). Our protocol enables organizations (client) to (1) securely upload an unso...
Let ΩΩ be a finite set of operation symbols. We initiate the study of (weakly) pseudo-free families of computational ΩΩ-algebras in arbitrary varieties of ΩΩ-algebras. Most of our results concern (wea...
Homomorphic universally composable (UC) commitments allow for the sender to reveal the result of additions and multiplications of values contained in commitments without revealing the values themselve...
The necessary conditions for SETUP implementation are building in entropy source (otherwise generated secret will be predictable). In this article, it's considered subscriber whose protocol implementa...
Two-party Secure Function Evaluation (SFE) allows two parties to evaluate a function known to both parties on their private inputs. In some settings, the input of one of the parties is the de finition...
Cramer and Damgård were the first to propose a constant-rounds protocol for securely solving a linear system of unknown rank over a finite field in multiparty computation (MPC). For mm linear equ...
On the exponents of APN power functions and Sidon sets, sum-free sets, and Dickson polynomials.
A Certain Family of Subgroups of Zn⋆ Is Weakly Pseudo-Free under the General Integer Factoring Intractability Assumption.
This paper firstly introduces a novel security definition for BLAC-like schemes (BLAC represents TTP-free BLacklist-able Anonymous Credentials) in the symbolic model using applied pi calculus, which i...
Asymptotically, the best known algorithms for solving the Shortest Vector Problem (SVP) in a lattice of dimension nn are sieve algorithms, which have heuristic complexity estimates ranging from (4/3)n...
It is tempting to think that if we encrypt a sequence of messages {xi} using a semantically secure encryption scheme, such that each xi is encrypted with its own independently generated public key pki...
In this paper, we propose an improved cryptanalysis of the double-branch hash function RIPEMD-160 standardized by ISO/IEC. Firstly, we show how to theoretically calculate the step differential probabi...
Write-Only Oblivious RAM (WoORAM) protocols provide privacy by encrypting the contents of data and also hiding the pattern of write operations over that data. WoORAMs provide better privacy than plain...

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