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Related papers: Algorithm for factoring some RSA and Rabin moduli

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Shor's algorithm is one of the most promising applications of quantum computers. However, since $\sim 10^6$ physical qubits are believed to be required for established approaches, the algorithm will need to be distributed across many…

Quantum Physics · Physics 2026-05-06 Tian Xue , Jacob P. Covey

In this article, we give evidence that computing Fourier coefficients of the Hecke eigenforms for composite indices is no easier than factoring integers. In particular, we show that the existence of a polynomial time algorithm that, given…

Number Theory · Mathematics 2007-08-13 Eric Bach , Denis Charles

In this paper we generalize the quantum algorithm for computing short discrete logarithms previously introduced by Eker{\aa} so as to allow for various tradeoffs between the number of times that the algorithm need be executed on the one…

Cryptography and Security · Computer Science 2024-06-07 Martin Ekerå , Johan Håstad

We present a special-purpose algorithm for factoring semiprimes $N = pq$ in which one prime factor satisfies $p \approx c\,(a/b)^n$ for positive integers $a, b, c, n$ with $a > b$ and $\gcd(a,b) = 1$. Given the correct parameters $(a, b)$,…

Number Theory · Mathematics 2026-05-12 Sam Blake

We report on two new records: the factorization of RSA-240, a 795-bit number, and a discrete logarithm computation over a 795-bit prime field. Previous records were the factorization of RSA-768 in 2009 and a 768-bit discrete logarithm…

Cryptography and Security · Computer Science 2020-06-12 Fabrice Boudot , Pierrick Gaudry , Aurore Guillevic , Nadia Heninger , Emmanuel Thomé , Paul Zimmermann

A precise estimation of the computational complexity in Shor's factoring algorithm under the condition that the large integer we want to factorize is composed by the product of two prime numbers, is derived by the results related to number…

Quantum Physics · Physics 2010-01-11 K. Kuriyama , S. Sano , S. Furuichi

The integer factorization problem (IFP) underpins the security of RSA, yet becomes efficiently solvable on a quantum computer through Shor's algorithm. Regev's recent high-dimensional variant reduces the circuit size through lattice-based…

Quantum Physics · Physics 2025-11-25 Wentao Yang , Bao Yan , Muxi Zheng , Quanfeng Lu , Shijie Wei , Gui-Lu Long

Classical public-key cryptography standards rely on the Rivest-Shamir-Adleman (RSA) encryption protocol. The security of this protocol is based on the exponential computational complexity of the most efficient classical algorithms for…

Cryptography and Security · Computer Science 2026-03-12 Marco Tesoro , Ilaria Siloi , Daniel Jaschke , Giuseppe Magnifico , Simone Montangero

The security of the RSA cryptosystem is based on the difficulty of factoring a large number N into prime numbers p and q satisfying N=p*q . This paper presents a prime factoriaation method using D-Wave quantum computer that can threaten the…

Quantum Physics · Physics 2023-09-12 Kyungtaek Jun

Shor's factoring algorithm (SFA), by its ability to efficiently factor large numbers, has the potential to undermine contemporary encryption. At its heart is a process called order finding, which quantum mechanics lets us perform…

Quantum Physics · Physics 2017-03-03 Frédéric Grosshans , Thomas Lawson , François Morain , Benjamin Smith

A new deterministic algorithm for finding square divisors, and finding $r$-power divisors in general, is presented. This algorithm is based on Lehman's method for integer factorization and is straightforward to implement. While the…

Number Theory · Mathematics 2022-10-03 Jonathon Hales , Ghaith Hiary

Prime factorization has been a buzzing topic in the field of number theory since time unknown. However, in recent years, alternative avenues to tackle this problem are being explored by researchers because of its direct application in the…

General Mathematics · Mathematics 2024-07-09 Mahadee Al Mobin , Md Kamrujjaman

The assumed computationally difficulty of factoring large integers forms the basis of security for RSA public-key cryptography, which specifically relies on products of two large primes or semi-primes. The best-known factoring algorithms…

Cryptography and Security · Computer Science 2019-10-24 Michele Mosca , Sebastian R. Verschoor

Integer factorization is a fundamental problem in algorithmic number theory and computer science. It is considered as a one way or trapdoor function in the (RSA) cryptosystem. To date, from elementary trial division to sophisticated methods…

Number Theory · Mathematics 2025-07-10 Gilda Rech Bansimba , Regis Freguin Babindamana

The RSA cryptosystem, which relies on the computational difficulty of prime factorization, faces growing challenges with the advancement of quantum computing. In this study, we propose a quantum annealing based approach to integer…

Quantum Physics · Physics 2025-06-23 Arim Ryou , Kiwoong Kim , Kyungtaek Jun

We show that using character sum estimates due to H. Iwaniec leads to an improvement of recent results about the distribution and finding RSA moduli $M=pl$, where $p$ and $l$ are primes, with prescribed bit patterns. We are now able to…

Number Theory · Mathematics 2007-09-18 Sidney W. Graham , Igor E. Shparlinski

Several physics-based algorithms for factorizing large number were recently published. A notable recent one by Schleich et al. uses Gauss sums for distinguishing between factors and non-factors. We demonstrate two NMR techniques that…

Quantum Physics · Physics 2009-11-13 T. S. Mahesh , Nageswaran Rajendran , Xinhua Peng , Dieter Suter

Windowed arithmetic [Gidney, 2019] is a technique for reducing the cost of quantum arithmetic circuits with space--time tradeoffs using memory queries to precomputed tables. It can reduce the asymptotic cost of modular exponentiation from…

Quantum Physics · Physics 2025-02-25 Alessandro Luongo , Varun Narasimhachar , Adithya Sireesh

This note introduces a new class of integer factoring algorithms. Two versions of this method will be described, deterministic and probabilistic. These algorithms are practical, and can factor large classes of balanced integers N = pq, p <…

Number Theory · Mathematics 2007-05-23 N. A. Carella

We demonstrate that a modification of the classical index calculus algorithm can be used to factor integers. More generally, we reduce the factoring problem to finding an overdetermined system of multiplicative relations in any factor base…

Number Theory · Mathematics 2023-07-21 Katherine E. Stange