Skip to content
I T S S
  • Welcome
  • Hardware
  • Internet
  • Networking
  • Security
  • Data Recovery
  • Support
  • Contact
  • Webmail

A Nice Little Cryptography Primer

By itss | 28/06/2021
0 Comment

Pun Intended.

Category: Technology
Post navigation
← pfSense / Wireguard / Bad Code / Close Call Why Quake3 was so fast : Fast Inverse Square Root →

Recent Posts

  • Hardware Exploits?
  • Why Quake3 was so fast : Fast Inverse Square Root
  • A Nice Little Cryptography Primer
  • pfSense / Wireguard / Bad Code / Close Call
  • Apple Continues Its Trip To The Dark Side With The Release of MacOS 17 (Big Sur)

Slashdot

News for nerds

  • Is It Time For Open Source to Start Charging For Access?
    by EditorDavid on 29/03/2026 at 11:46 pm

    "It's time to charge for access," argues a new opinion piece at The Register. Begging billion-dollar companies to fund open source projects just isn't enough, writes long-time tech reporter Steven J. Vaughan-Nichols: Screw fair. Screw asking for dimes. You can't live off one-off charity donations... Depending on what people put in a tip jar is no way to fund anything of value... [A]ccording to a 2024 Tidelift maintainer report, 60 percent of open source maintainers are unpaid, and 60 percent have quit or considered quitting, largely due to burnout and lack of compensation. Oh, and of those getting paid, only 26 percent earn more than $1,000 a year for their work. They'd be better paid asking "Would you like fries with that?" at your local McDonald's... Some organizations do support maintainers, for example, there's HeroDevs and its $20 million Open Source Sustainability Fund. Its mission is to pay maintainers of critical, often end-of-life open source components so they can keep shipping patches without burning out. Sentry's Open Source Pledge/Fund has given hundreds of thousands of dollars per year directly to maintainers of the packages Sentry depends on. Sentry is one of the few vendors that systematically maps its dependency tree and then actually cuts checks to the people maintaining that stack, as opposed to just talking about "giving back." Sentry is on to something. We have the Linux Foundation to manage commercial open source projects, the Apache Foundation to oversee its various open source programs, the Open Source Initiative (OSI) to coordinate open source licenses, and many more for various specific projects. It's time we had an organization with the mission of ensuring that the top programmers and maintainers of valuable open source projects get a cut of the tech billionaire pie. We must realign how businesses work with open source so that payment is no longer an optional charitable gift but a cost of doing business. To do that, we need an organization to create a viable, supportable path from big business to individual programmer. It's time for someone to step up and make this happen. Businesses, open source software, and maintainers will all be better off for it. One possible future... Bruce Perens wrote the original Open Source definition in 1997, and now proposes a not-for-profit corporation developing "the Post Open Collection" of software, distributing its licensing fees to developers while providing services like user support, documentation, hardware-based authentication for developers, and even help with government compliance and lobbying. Read more of this story at Slashdot.

  • 'Project Hail Mary': Real Space Science, Real Astrophotography
    by EditorDavid on 29/03/2026 at 10:19 pm

    Project Hail Mary has now grossed $300.8 million globally after earning another $54.1 million this weekend from 86 markets, reports Variety, noting that after just nine days it's now Amazon MGM's highest-grossing film ever. And last weekend it had the best opening for a "non-franchise" movie in three years, adds the Associated Press — the best since 2023's Oppenheimer: Project Hail Mary, which cost nearly $200 million to produce... is on an enviable trajectory. Its second weekend hold was even better than that of Oppenheimer, which collected $46.7 million in its follow-up frame. But the movie is based on a book by The Martian author Andy Weir, described by one news outlet as "a former software engineer and self-proclaimed 'lifelong space nerd'... known for his realistic and clear-eyed approach to scientifically technical stories." Project Hail Mary has plenty of real science in it, whether it be space mathematics, physics, or astrobiology... The film's namesake project is even comprised of the space programs of other nations, such as Roscosmos from Russia, the Chinese space program, and the European Space Agency... The story relies on work NASA has done regarding exoplanets, or planets outside our solar system... [This includes a nearby star named Tau Ceti approximately 12 light years from Earth which is orbited by four planets — two once thought to be in "the habitable zone" where liquid water can exist.] Tau Ceti has long been the setting used by sci-fi authors and storytellers. Isaac Asimov used it for his Robot series. Arthur C. Clarke's "Rama" spacecraft came across a mysterious tetrahedron in the Tau Ceti system. Authors Ursula K. Le Guin and Kim Stanley Robinson also set stories in Tau Ceti, and it also serves as the extrasolar setting of the 1968 Jane Fonda film Barbarella. Most recently, the Bungie video game Marathon is set in the far-off system, serving as part of the background story for the extraction shooter, about a large-scale plan to colonize the Tau Ceti system. The movie also mentions 40 Eridani A, according to the article, a real star about 16 light-years away that was said to be orbited by the fictional planet Vulcan, home to Star Trek's Mr. Spock. It's also mentioned in Frank Herbert's Dune as the star system of the planets Ix and Richese ("noted for their machine culture and miniaturisation," according to the Stellar Australis site's "Project Dune" page). And in a video on IMAX's YouTube channel, the film's directors explain how for a crucial scene they used non-visible-light photography, which is also an important part of modern astronomy. "Even the credits incorporate real astrophotography into the final moments," the article points out, using the work of award-winning Australian astrophotographer Rod Prazeres. "The only difference between his work of capturing space data in images and what ended up on the big screen was that he gave them 'starless versions' of his photographs to make it easier to place credit text over them." Prazeres wrote on his web site that he was touched the producers "wanted the real thing... In a world where CGI and AI are everywhere, it meant a lot..." Read more of this story at Slashdot.

  • World's Smallest QR Code - Smaller Than Bacteria - Could Store Data for Centuries
    by EditorDavid on 29/03/2026 at 9:15 pm

    "Scientists have created a microscopic QR code so tiny it can only be seen with an electron microscope," reports Science Daily. It's "smaller than most bacteria and now officially a world record." "But this isn't just about size; it's about durability. By engraving data into ultra-stable ceramic materials, the team has opened the door to storing information that could last for centuries or even millennia without needing power or maintenance." Scientists at TU Wien, working with data storage company Cerabyte, produced a QR code measuring just 1.98 square micrometers... officially confirmed and recorded in the Guinness Book of Records... Each pixel measures just 49 nanometers, which is about ten times smaller than the wavelength of visible light. As a result, the pattern is completely invisible under normal conditions and cannot be resolved using visible light. However, when viewed with an electron microscope, the QR code can be clearly and reliably read. The storage capacity is also impressive. More than 2 terabytes of data could fit within the area of a single A4 sheet of paper using this approach... This work points toward a more sustainable future for data storage, where information can be preserved securely for the long term with minimal energy use. "We live in the information age, yet we store our knowledge in media that are astonishingly short-lived," says Alexander Kirnbaue (from the thin film materials science division at Vienna's Tu Wein research university). "With ceramic storage media, we are pursuing a similar approach to that of ancient cultures, whose inscriptions we can still read today..." "We now aim to use other materials, increase writing speeds, and develop scalable manufacturing processes so that ceramic data storage can be used not only in laboratories but also in industrial applications." Read more of this story at Slashdot.

  • This Friendly Robot Just Installed 100 MW of Solar Power
    by EditorDavid on 29/03/2026 at 7:48 pm

    Utility-scale solar construction... by robots! It's "one of the largest real-world demonstrations," notes Electrek, with 100 MW of capacity installed by the "Maximo" robots from AES, one of the world's top power companies. Maximo uses AI "to automate the heavy lifting of solar panels and accelerate solar installation," according to their web page, which shows a video of Maximo at work installing a vast field of solar panels in Kern County, California. With assistance from Nvidia, the Maximo team could "develop, test and refine robotic capabilities through physics-based simulation and AI driven modeling before deploying updates in the field," reports Electrek, and they're aiming for a full GW of solar generating capacity: After completing the first half of the Bellefield complex last summer, Maximo engineers went into a higher gear, with the latest version 3.0 robots consistently surpassing an installation rate of one module per minute, with construction crews installing as many as 24 solar panel modules per hour, per person. If that sounds fast, that's because it is. At full tilt, the latest Maximo robot-equipped crews have nearly doubled the output of traditional installation methods at similar solar locations throughout Southern California. "Reaching 100 MW is an important milestone for Maximo and for the role robotics can play in solar construction," explains Chris Shelton, president of Maximo. "It demonstrates that field robotics can move beyond experimentation and deliver consistent results at utility scale. As solar deployment continues to accelerate globally, technologies that improve installation speed, quality and reliability will become increasingly important...." Like just about every other business that demands a high degree of physical labor, the construction industry is facing huge labor shortages, making machines like Maximo that provide real efficiency gains welcome additions to the job site. "The combination of AI, vision, robotics and simulation driven engineering reduced development and validation timelines," the Maximo team said in a statement, "and increased confidence in field performance as the robotic fleet scaled." Read more of this story at Slashdot.

  • Bluesky's Newest Product: an AI Tool That Gives You Custom Feeds
    by EditorDavid on 29/03/2026 at 6:34 pm

    "What happens when you can describe the social experience you want and have it built for you...?" asks Bluesky? "We've just started experimenting, but we're sharing it now because we want you to build alongside us." Called "Attie" — because it's built with Bluesky's decentralized publishing framework, AT Protocol (which is open source) — the new assistant turns natural language prompts into social feeds, without users having to know how to code. (It's part of Bluesky's mission to "develop and drive large-scale adoption of technologies for open and decentralized public conversation.") Engadget reports: On the Attie website, examples include prompts like, "Show me electronic music and experimental sound from people in my network" or "Builders working on agent infrastructure and open protocol design." "It feels more like having a conversation than configuring software," [writes Bluesky's former CEO/current chief innovation officer, Jay Graber, in a blog post]. "You describe the sort of posts you want to see, and the coding agent builds the feed you described." Graber added that Attie is a separate app from Bluesky and users don't have to use the new AI assistant if they don't want to. However, since Attie and Bluesky were built on the same framework, it could mean there will be some cross-app implementation between the two or any other app built on the AT Protocol. "Attie is open for beta signups today, and we'll be sharing what we learn along the way," Graber writes in the blog post. "To learn more about Attie, visit: Attie.AI. Come help us find out what this can be." The blog post warns that "Right now, AI is undermining human agency at the same time it's enhancing it," since "The proliferation of low-quality AI-generated content is making public social networks noisier and less trustworthy..." And in a world where "signal is getting harder to find... The major platforms aren't trying to fix this problem." They're using AI to increase the time users spend on-platform, to harvest training data, and to shape what users see and believe through systems they can't inspect and didn't choose. We think AI should serve people, not platforms... An open protocol puts this power directly in users' hands. You can use it to build your own feeds, create software that works the way you want it to, and find signal in the noise. We built the AT Protocol so anyone could build any app they imagine on top of it, but until recently "anyone" really meant "anyone who can code." Agentic coding tools change that. For the first time, an open protocol can be genuinely open to everyone... The Atmosphere [Bluesky's interoperable ecosystem] is an open data layer with a clearly defined schema for applications, which makes it uniquely well-suited for coding agents to build on... Bluesky will continue to evolve as a social app millions of people rely on. Attie will be where we experiment with agentic social. AI is an accelerant on whatever it's applied to. I want it to accelerate decentralizing social and putting power back in users' hands. But I don't think the most interesting things built on AT Protocol will come from us. They're going to come from everyone who picks up these tools and starts building. Read more of this story at Slashdot.

  • Amazon Gambles on $4B Push Into America's Rural Areas, May Soon Carry More Parcels Than USPS
    by EditorDavid on 29/03/2026 at 4:34 pm

    In many rural areas, America's online shoppers can wait half a week or more for deliveries. But Amazon started a $4 billion "rural delivery push" last year, reports Bloomberg, and has now cut delivery times to under 24 hours for 1 in 5 rural and small-town households, with 48-hour delivery to 62% of rural households. The payoff could be huge. Rural shoppers in the US collectively spend $1 trillion a year on clothing, electronics, household goods and other items, representing about 20% of retail purchases excluding cars and gasoline, according to Morgan Stanley. Amazon aims to recondition those shoppers to expect quick delivery, which would play to its strengths and make the company top-of-mind for online purchases... "Rural America is often overlooked," said Sky Canaves, an analyst at EMarketer Inc. who tracks online sales. "This is the opportunity Amazon is trying to seize because e-commerce growth is getting harder to come by...." Amazon's rural push will require a lot more rural business owners willing to make deliveries... Today, Amazon delivers more parcels overall than UPS and FedEx, which are both shedding workers and shrinking their delivery networks, including in rural areas. By picking up the slack, Amazon is expected to become the largest parcel carrier in the US — surpassing the postal service — in 2028, according to the shipping software company Pitney Bowes. Amazon currently delivers two of three orders itself. For rural shoppers, the most visible change will be fewer brown UPS trucks, fewer packages delivered by mail carriers and more small business owners pulling up in their minivans. Amazon's relationship with America's postal service "has become rocky following a dispute over contract terms," notes the Wall Street Journal. But they also share an interesting calculation by Marc Wulfraat, president of MWPVL International, a supply-chain consultancy monitoring the e-commerce company's logistics network. . At Amazon's current pace of constructing 40 to 50 new delivery hubs each year, he estimates Amazon will be able to ship packages to every single U.S. ZIP Code within four years. Read more of this story at Slashdot.

Archives

  • September 2022
  • November 2021
  • June 2021
  • March 2021
  • November 2020
  • October 2020
  • September 2020
  • February 2020
  • January 2020
  • October 2019
  • August 2018
  • July 2018
  • April 2018
  • February 2018
  • January 2018
  • December 2017
  • October 2017
  • September 2017
  • August 2016
  • July 2016
  • March 2016
  • February 2016
  • August 2015
  • May 2015

Categories

  • Innovation
  • Security
  • Software
  • Technology

Tags

backdoor cisco coding json laziness patterns public information announcement security vulnerability
© 2017 IT Sales & Services Ltd
Quality IT solutions in Tanzania since 2010
Iconic One Theme | Powered by Wordpress