Quantum Archivi

Future-proof cryptography: the security of TelsyMusa

Ensuring proper security standards for our systems and servers has never been more essential. This need, coupled with the growth rate of cyber threats and, more importantly, the increasingly various...

Classic McEliece: key encapsulation based on codes

26 Feb

Introduction At the end of the third round of the NIST standardization process, the CRYSTALS-Kyber key encapsulation method aimed at replacing the current ECDH scheme was selected. NIST then defined...

New post-quantum digital signature proposals: the second NIST competition

16 Oct

[latexpage] Introduction In response to the threat posed by quantum computers, in 2017 the National Institute of Standards and Technology (NIST) launched a standardization process for the selection of quantum-resistant public-key cryptography...

Falcon: NTRU-based digital signature

31 Jul

[latexpage] Introduction The Post-Quantum Cryptography NIST standardization process has identified two digital signature schemes based on lattice theory CRYSTALS-Dilithium and Falcon. In modern cryptographic protocols, these solutions are set to replace the currently used digital signature schemes...

CRYSTALS-Dilithium: LWE-based digital signature

31 May

[latexpage] Introduction The NIST standardization process in the post-quantum domain has identified two cryptographic schemes to be considered “primary” solutions. Regarding Key Encapsulation Mechanisms (KEMs), i.e., key derivation schemes, CRYSTALS-Kyber was selected, while for digital...

CRYSTALS-Kyber: LWE-based key encapsulation

08 May

[latexpage] Introduction In the context of the NIST standardization process for identifying and analyzing Post-Quantum Cryptography (PQC) solutions, the first crucial outcome is given by the selection of the key encapsulation mechanism CRYSTALS-Kyber. Kyber...

The Math Behind PQC: Learning With Errors

27 Mar

[latexpage] Introduction Some of the cryptographic schemes that emerged as winners of the NIST standardization process and belong to the lattice-based cryptography family are built upon a problem known as Learning With Errors (LWE)....

The mathematics behind PQC: lattices

15 Feb

[latexpage] Introduction A large number of post-quantum cryptographic schemes are based on a mathematical structure known as a lattice. Within this framework, it is possible to define problems that are...

Key Negotiation in the Post-Quantum Era

09 Sep

[latexpage] Introduction Cryptography, understood as the set of schemes for protecting information, is typically divided into symmetric or private key cryptography and asymmetric or public key cryptography. Symmetric encryption involves...

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

13 Jul

Introduction Public key cryptography (or asymmetric cryptography) is one of the foundations on which all communication protocols are based. Starting from an insecure channel, these protocols must achieve multiple security...