Lifeboat Foundation: Safeguarding Humanity
Toggle light / dark theme

Blog

Category: encryption

Researchers Demonstrate QuantumShield-BC Blockchain Framework

Researchers have developed QuantumShield-BC, a blockchain framework designed to resist attacks from quantum computers by integrating post-quantum cryptography (PQC) utilising algorithms such as Dilithium and SPHINCS+, quantum key distribution (QKD), and quantum Byzantine fault tolerance (Q-BFT) leveraging quantum random number generation (QRNG) for unbiased leader selection. The framework was tested on a controlled testbed with up to 100 nodes, demonstrating resistance to simulated quantum attacks and achieving fairness through QRNG-based consensus. An ablation study confirmed the contribution of each quantum component to overall security, although the QKD implementation was simulated and scalability to larger networks requires further investigation.

Microchip Provides Made-to-Order Photons

A 10-µm-wide microchip can generate light with any desired direction, polarization, and intensity, which will be handy for future quantum technologies.

Emerging technologies for quantum computing and cryptography require small components capable of emitting photons whose properties are precisely controlled. Researchers have been developing such components, and now a team has demonstrated a technique that provides control of direction, polarization, and intensity simultaneously [1]. Like previous experiments, the technique uses microscopic structures on a semiconductor surface to convert wave-like surface excitations to light waves. But the new demonstration uses shapes for these structures that allow more precise control over the outgoing light. The team expects the new technique to find wide use in efforts to build quantum technologies in miniature solid-state devices.

Solid-state miniaturization is one of the few realistic routes toward making quantum technologies practical, scalable, and easily manufacturable, says Fei Ding of the University of Southern Denmark. But there are not many good compact photon sources. “The technology really requires a compact and flexible solid-state photon source that gives us full control over how light is emitted—its direction, polarization, and spatial profile,” Ding says. “This is crucial for building scalable quantum and nanophotonic technologies, where single photons are used as the fundamental carriers of information.”

Ultrathin metasurface enables high-efficiency vectorial holography

Holography—the science of recording and reconstructing light fields—has long been central to imaging, data storage, and encryption. Traditional holographic systems, however, rely on bulky optical setups and interference experiments, making them impractical for compact or integrated devices. Computational methods such as the Gerchberg–Saxton (GS) algorithm have simplified hologram design by eliminating the need for physical interference patterns, but these approaches typically produce scalar holograms with uniform polarization, limiting the amount of information that can be encoded.

U.K. Government Drops Apple Encryption Backdoor Order After U.S. Civil Liberties Pushback

The U.K. government has apparently abandoned its plans to force Apple to weaken encryption protections and include a backdoor that would have enabled access to the protected data of U.S. citizens.

U.S. Director of National Intelligence (DNI) Tulsi Gabbard, in a statement posted on X, said the U.S. government had been working with its partners with the U.K. over the past few months to ensure that Americans’ civil liberties are protected.

“As a result, the U.K. has agreed to drop its mandate for Apple to provide a ‘backdoor’ that would have enabled access to the protected encrypted data of American citizens and encroached on our civil liberties,” Gabbard said.

Cryonics & Cryptography | Ralph Merkle at Vitalist Bay

Veteran cryonicist and inventor of cryptographic hashing, Ralph Merkle, tells us how he came to decide that cryonics was a good idea. In his talk, Ralph discusses Information Theoretic Death, why information is so hard to destroy, and how advances in nano-tech might make cryonics revival possible.

Links:
• Cryosphere Discord server: https://discord.com/invite/ndshSfQwqz.
• Cryonics subreddit: https://www.reddit.com/r/cryonics/
#cryosphere

Scientists Use Cryptography To Unlock Secrets of Quantum Advantage

Researchers use cryptography to gain insights into the mechanisms behind quantum speed-ups. Quantum computing is widely regarded by experts as the next major leap in computer technology. Unlike traditional computers, which process information in binary (0s and 1s), quantum computers make use of u

/* */