Post-Quantum Security of COPA. [PDF]
Entropy (Basel)COPA is a notable authenticated online cipher and was one of the winning proposals for the CAESAR competition. Current works describe how to break the existentially unforgeable under quantum chosen message attack (EUF-qCMA) of COPA. However, these works do not demonstrate the confidentiality of COPA in the quantum setting.
Zhang P, Wang Y.
europepmc +6 more sources
IEEE Access, 2020 Blockchain and other Distributed Ledger Technologies (DLTs) have evolved significantly in the last years and their use has been suggested for numerous applications due to their ability to provide transparency, redundancy and accountability.
Tiago M. Fernandez-Carames +1 more
doaj +3 more sources
A Lightweight Hybrid Authentication and Key Agreement Protocol for Decentralized Device-to-Device Communication with Post-Quantum Confidentiality [PDF]
SensorsDevice-to-device (D2D) communication is expected to become a key component of 6G and IoT systems, enabling low-latency and infrastructure-independent connectivity.
Asday Savón-Berenguer +3 more
doaj +2 more sources
A Post-Quantum Authentication and Key Agreement Protocol Based on Lattice-Based KEM for Secure Network Environments [PDF]
EntropyIn emerging environments such as cloud computing and the Internet of Things (IoT), secure authentication and key negotiation play a crucial role in protecting data transmitted over public networks.
Xiaoping Chen +4 more
doaj +2 more sources
Post-quantum security of the sponge construction.. Post-Quantum Cryptography. [PDF]
PQCrypto 2018, 2018 We investigate the post-quantum security of hash functions based on the sponge construction. A crucial property for hash functions in the post-quantum setting is the collapsing property (a strengthening of collision-resistance). We show that the sponge construction is collapsing (and in consequence quantum collision-resistant) under suitable ...
Jan Czajkowski +4 more
core +10 more sources
A Post-Quantum Public-Key Signcryption Scheme over Scalar Integers Based on a Modified LWE Structure [PDF]
SensorsTo ensure confidentiality and integrity in the era of quantum computing, most post-quantum cryptographic schemes are designed to achieve either encryption or digital signature functionalities separately.
Mostefa Kara +3 more
doaj +2 more sources
Lattice-Based Certificateless Proxy Re-Signature for IoT: A Computation-and-Storage Optimized Post-Quantum Scheme [PDF]
SensorsProxy re-signature enables transitive authentication of digital identities across different domains and has significant application value in areas such as digital rights management, cross-domain certificate validation, and distributed system access ...
Zhanzhen Wei +4 more
doaj +2 more sources
Quantum secured blockchain framework for enhancing post quantum data security [PDF]
Scientific ReportsQuantum computing is an evolution of classical computing, capable of solving problems that are competitive enough to break the existing cryptographic primitives upon which current blockchain systems are based. Popular schemes like RSA, ECDSA, and SHA-256
Nalavala Ramanjaneya Reddy +5 more
doaj +2 more sources
Syrga2: Post-Quantum Hash-Based Signature Scheme
ComputationThis paper proposes a new post-quantum signature scheme, Syrga2, based on hash functions. As known, existing post-quantum algorithms are classified based on their structures.
Kunbolat Algazy +3 more
doaj +3 more sources
Post-Quantum Delegated Proof of Luck for Blockchain Consensus Algorithm
Applied SciencesThe advancements in quantum computing and the potential for polynomial-time solutions to traditional public key cryptography (i.e., Rivest–Shamir–Adleman (RSA) and elliptic-curve cryptography (ECC)) using Shor’s algorithm pose a serious threat to the ...
Hyunjun Kim +4 more
doaj +3 more sources