5 papers · 1 filter
Entropy Bootstrapping for Wireless Embedded Systems
Javier Blanco-Romero, Florina Almenares Mendoza, Daniel Díaz-Sánchez +1
Cryptographic protocols require unpredictable randomness at first boot, yet wireless sensors often wake with uninitialized hardware or noise sources running in unverified operating…
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 Lovász…
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 García 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…