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A Nice Little Cryptography Primer

By itss | 28/06/2021
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Pun Intended.

Category: Technology
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  • IBM Scientists Unveil First-Ever 'Half-Mobius' Molecule
    by BeauHD on 06/03/2026 at 10:00 am

    BrianFagioli shares a report from NERDS.xyz: An international team of scientists has done something chemistry has never seen before. IBM, working alongside researchers from the University of Manchester, Oxford University, ETH Zurich, EPFL, and the University of Regensburg, has created and characterized a molecule whose electrons travel through its structure in a corkscrew-like pattern, fundamentally altering its chemical behavior. The findings were published today in Science. The molecule, known as C13Cl2, is the first experimental observation of what scientists call a half-Mobius electronic topology in a single molecule. To the researchers' knowledge, nothing like it has ever been synthesized, observed, or even formally predicted. And proving why it behaves the way it does required something equally extraordinary -- a quantum computer. The whole thing started at IBM, where the molecule was assembled atom by atom from a custom precursor synthesized at Oxford. Working under ultra-high vacuum at near-absolute-zero temperatures, researchers used precisely calibrated voltage pulses to remove individual atoms one at a time. The result is an electronic structure that undergoes a 90-degree twist with each circuit through the molecule, requiring four complete loops to return to its starting phase. That is a topological property that has no counterpart anywhere in chemistry's existing record. What makes it even more interesting to folks who follow materials science is that this topology can be switched. The molecule can move reversibly between clockwise-twisted, counterclockwise-twisted, and untwisted states. That means electronic topology is not just a curiosity to be stumbled upon in nature -- it can be deliberately engineered. That is a big deal. The quantum computing angle here is not just a supporting role. Electrons within C13Cl2 interact in deeply entangled ways, each influencing the others simultaneously. Modeling that requires tracking every possible configuration of those interactions at once -- something that causes computational demands to grow exponentially and can quickly overwhelm classical machines. A decade ago, researchers could exactly model 16 electrons classically. Today that number has crept to 18. Using IBM's quantum computer, the team was able to explore 32 electrons. Quantum computers can represent these systems directly rather than approximate them, because they operate according to the same quantum mechanical laws that govern electrons in molecules. In this case, that capability helped reveal helical molecular orbitals for electron attachment -- a fingerprint of the half-Mobius topology -- and exposed the mechanism behind the unusual structure: a helical pseudo-Jahn-Teller effect. Read more of this story at Slashdot.

  • Congress Extends ISS, Tells NASA To Get Moving On Private Space Stations
    by BeauHD on 06/03/2026 at 7:00 am

    A recently-revised Senate authorization bill (PDF), co-sponsored by Senate Commerce Committee Chair Ted Cruz, would extend the International Space Station's lifespan from 2030 to 2032 while pushing NASA to accelerate plans for commercial space stations to replace it. Ars Technica's Eric Berger reports: Regarding NASA's support for the development of commercial space stations, the bill mandates the following, within specified periods, of passage of the law: - Within 60 days, publicly release the requirements for commercial space stations in low-Earth orbit - Within 90 days, release the final "request for proposals" to solicit industry responses - Within 180 days, enter into contracts with "two or more" commercial providers for such stations Cruz is trying to inject urgency into NASA as several private companies -- including Axiom Space, Blue Origin, Vast, and Voyager -- are finalizing designs for space stations. All have expressed a desire for clarity from NASA on how long the space agency would like its astronauts to stay on board, the types of scientific equipment needed, and much more. These are known as "requirements" in NASA parlance. [...] Cruz and other senators on the committee appear to share those concerns, as their legislation extends the International Space Station's lifespan from 2030 to 2032 (an extension must still be approved by international partners, including Russia). Moreover, the authorization bill states, "The Administrator shall not initiate the de-orbit of the ISS until the date on which a commercial low-Earth orbit destination has reached an initial operational capability." With this legislation, the U.S. Senate is making clear that it views a permanent human presence in low-Earth orbit as a high priority. This version of the authorization legislation must still be passed by the full Senate and work its way through the House of Representatives. Read more of this story at Slashdot.

  • Microsoft Confirms 'Project Helix,' a Next-Gen Xbox That Can Run PC Games
    by BeauHD on 06/03/2026 at 3:30 am

    An anonymous reader quotes a report from 80 Level: Microsoft has officially confirmed development of its next-generation Xbox console, currently known internally as Project Helix. While concrete details remain limited, early information suggests the company is positioning the device as a hybrid between a traditional console and a gaming PC, capable of running both Xbox titles and PC games. The codename was revealed recently by new Xbox CEO Asha Sharma, who reaffirmed Microsoft's continued commitment to dedicated gaming hardware despite speculation that the company might shift entirely toward cloud or platform-based ecosystems. According to Sharma, Project Helix represents the next step in Xbox's console strategy. Although official specifications have not yet been announced, early reports indicate the system will likely rely on a new AMD system-on-chip combining Xbox hardware with PC-style architecture. The device is expected to emphasize high performance while maintaining compatibility with existing Xbox game libraries. [...] If the concept holds, Project Helix could mark a significant shift in how console ecosystems are structured, moving away from tightly closed hardware platforms toward something closer to a unified PC-console environment. Sharma wrote in a post on X: "Great start to the morning with Team Xbox, where we talked about our commitment to the return of Xbox, including Project Helix, the code name for our next generation console. Project Helix will lead in performance and play your Xbox and PC games. Looking forward to chatting about this more with partners and studios at my first GDC next week!" Read more of this story at Slashdot.

  • Pentagon Formally Designates Anthropic a Supply-Chain Risk
    by BeauHD on 06/03/2026 at 1:00 am

    The Pentagon has formally designated Anthropic as a "supply chain risk," ordering federal agencies and defense contractors to stop using its AI tools after the company sought limits on the military's use of its models. In a written statement, the department said it has "officially informed Anthropic leadership the company and its products are deemed a supply chain risk, effective immediately." Politico reports: The designation, historically reserved for foreign firms with ties to U.S. adversaries, will likely require companies that do business with the U.S. military -- or even the federal government in general -- to cut ties with Anthropic. "From the very beginning, this has been about one fundamental principle: the military being able to use technology for all lawful purposes," the Pentagon said in the statement. "The military will not allow a vendor to insert itself into the chain of command by restricting the lawful use of a critical capability and put our warfighters at risk." A spokesperson for Anthropic did not immediately respond to a request for comment. But the company said last week it would fight a supply-chain risk label in court. Read more of this story at Slashdot.

  • Mac Studio 512GB RAM Option Disappears Amid Global DRAM Shortage
    by BeauHD on 05/03/2026 at 11:00 pm

    Apple has removed the 512GB RAM configuration for the Mac Studio, leaving 256GB as the new maximum. The remaining 256GB upgrade has also increased in price and now faces longer shipping delays as demand grows "due to consumers seeking machines suitable for running local AI agents," reports MacRumors. From the report: The Mac Studio starts with 36GB RAM, but there were upgrades ranging from 48GB to 512GB, with the higher tier upgrades limited to the M3 Ultra chip. Now there are options ranging from 48GB to 256GB, with wait times into May for the 256GB upgrade. Apple has also raised the price for the 256GB RAM upgrade option. It used to cost $1,600 to go from 96GB to 256GB on the high-end M3 Ultra machine, but now it costs $2,000. 512GB was $4,000 when it was available. Read more of this story at Slashdot.

  • United Airlines Can Now Boot Passengers Who Refuse To Use Headphones
    by BeauHD on 05/03/2026 at 10:00 pm

    United Airlines has updated its contract of carriage to require passengers to use headphones when playing audio or video on personal devices during flights. Travelers who refuse could be removed from the plane or even permanently banned from flying with the airline, reports CBS News. United notes that it will offer customers who forget theirs a free pair of wired earbuds. "Don't worry if you forget your headphones for your flight," the airline states on its website. "If they're available, you can request free earbuds." You'd better hope your device still has a headphone jack... Further reading: Flying Was Already the Worst. Then America Stopped Using Headphones. Read more of this story at Slashdot.

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