11 papers
Entropy Bootstrapping for Wireless Embedded Systems
Javier Blanco-Romero, Florina Almenares Mendoza, Daniel DÃaz-Sánchez +1
Weak randomness has broken deployed cryptography through implementation bugs, boot entropy scarcity, and backdoored generators. Inexpensive wireless sensors concentrate the risk be…
Modular Lower Bounds on Reeh-Schlieder State Preparation
Javier Blanco-Romero, Florina Almenares Mendoza
The Reeh-Schlieder theorem says that every target vector can be approximated from the vacuum by an operator localized in an arbitrarily small spacetime region, but it gives no quan…
Variational and Majorization Principles in Lattice Reduction
Javier Blanco-Romero, Florina Almenares Mendoza
Lattice reduction smooths the Gram-Schmidt profile, and we use majorization to describe the local swap mechanism behind that smoothing. In this language, each non-degenerate Lovás…
Post-Quantum Entropy as a Service for Embedded Systems
Javier Blanco-Romero, Yuri Melissa Garcia-Niño, Florina Almenares Mendoza +3
Embedded cryptography stands or falls on entropy quality, yet small devices have few trustworthy sources and little tolerance for heavyweight protocols. We build a Quantum Entropy…
On the Practical Feasibility of Harvest-Now, Decrypt-Later Attacks
Javier Blanco-Romero, Florina Almenares Mendoza, Carlos GarcÃa Rubio +2
Harvest-now, decrypt-later (HN-DL) attacks threaten today's encrypted communications by archiving ciphertext until a quantum computer can break the underlying key exchange. This pa…
Implementing and Evaluating Post-Quantum DNSSEC in CoreDNS
Julio Gento Suela, Javier Blanco-Romero, Florina Almenares Mendoza +1
The emergence of quantum computers poses a significant threat to current secure service, application and/or protocol implementations that rely on RSA and ECDSA algorithms, for inst…