Quantum Archivi

The Math Behind PQC: Learning With Errors

Introduction Some of the winning cryptographic schemes in the NIST standardization process belonging to the latex-based cryptography family are constructed from a problem called Learning With Errors (LWE). Given a...

The mathematics behind PQC: lattices

15 Feb

Introduction A large number of post-quantum cryptography schemes are built on a mathematical structure called “lattice“, on which hard-to-solve problems can be defined even for a quantum computer. Cryptosystems belonging...

Quantum Key Distribution (QKD) and security

12 Dec

In the collective imagination, quantum computing has been relegated to science fiction for many years, but thanks to recent developments in technologies and substantial investments by major players, we are...

Key Negotiation in the Post-Quantum Era

09 Sep

Introduction Cryptography, understood as the set of information protection schemes, is typically divided into symmetric or private key cryptography and asymmetric or public key cryptography. Schemes or protocols that exploit...

Post-Quantum Cryptography (PQC): a classical solution to the quantum threat

13 Jul

Introduction Public key (or asymmetric) cryptography is one of the bases on which all communication protocols rest which, starting from an insecure channel, must achieve multiple security properties, such as...

Shor’s Quantum Algorithm

29 Mar

Introduction Among the numerous applications of the quantum computing model, the most relevant in the cryptographic field is represented by the work of the American computer scientist Peter W. Shor....

Grover’s Quantum Algorithm

04 Feb

Introduction With the 1996 article “A fast quantum mechanical algorithm for database search,” Indian-American computer scientist Lov K. Grover helped highlight the non-negligible impact of quantum computing on cryptography in...

The Quantum Computing

26 Nov

Introduction At the end of the last century, the field of experimental physics was revolutionized by the technological development of classical computers. Among the numerous innovations, the possibility of computer...

Telsy has recently entered into Quantum Telecommunications Italy

02 Aug

Telsy has recently completed its entry into Quantum Telecommunications Italy (QTI) with a minority stake in the share capital of this startup active in the field of quantum fiber optic...

War and cryptography: the challenge of quantum communication

16 Jun

Message encryption has always been a very important tool within the military, stretching back to the time of the ancient Greeks to the present day. It is natural for two...