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

  • Nvidia In Talks With OpenAI To Guarantee $250 Billion Financing For Data Center
    by BeauHD on 27/07/2026 at 3:00 pm

    An anonymous reader quotes a report from Reuters: Nvidia is in talks to provide roughly $250 billion in financing guarantees for OpenAI as part of a massive data center project, the Wall Street Journal reported on Sunday. The backstop from Nvidia would help the ChatGPT maker lease a 10-gigawatt project that SoftBank's energy subsidiary is developing in southern Ohio, the newspaper said, citing people familiar with the matter. For OpenAI, a deal would be the first step toward controlling its own infrastructure instead of renting it from Microsoft, Amazon, and Oracle, while for Nvidia, it would guarantee demand for its chips for years to come. The project is expected to cost more than $500 billion in total, including the chips inside the data center, according to the WSJ. The $250 billion guarantee covers the data center lease and debt financing, but would not cover the Nvidia chips inside the center, the WSJ said, adding that the chipmaker was also discussing financing OpenAI's chip purchases worth up to $350 billion. Nvidia's backing would support financing vehicles aimed at reassuring lenders about the project's funding, the report added. The first phase of the project is expected to be finished in 2028, with around 800 megawatts of power, the Journal said. The report notes that the U.S. government will control access to the power, while Japan will fund it separately under a trade agreement tied to Tokyo's $33 billion investment in a natural gas plant. Commerce Secretary Howard Lutnick will reportedly help determine who receives access. Read more of this story at Slashdot.

  • 'KVM Chainsaw' Expected to Hit Linux 7.3 For Dealing with 'God Data Structure'
    by EditorDavid on 27/07/2026 at 11:34 am

    An anonymous reader shared this report from Phoronix: A patch series that appears destined for the upcoming Linux 7.3 merge window is what's dubbed the "KVM Chainsaw" as a major code clean-up in dealing with the kvm_mmu "god data structure". Red Hat engineer and KVM maintainer Paolo Bonzini has merged the kvm-chainsaw branch to KVM's "next" Git branch. With this KVM Chainsaw work now in the next branch, it should be submitted for the upcoming Linux 7.3 cycle. The KVM Chainsaw work deals with the kvm_mmu structure being overloaded with multiple uses and splits it down into three parts for better handling current KVM usage. Paolo explains of KVM Chainsaw with the merge to the KVM.git next branch: "The kvm_mmu is a "god data structure" that includes three different tasks: describing the guest page table's format, walking the guest page tables and building the page tables. This means that the (already poorly named) nested_mmu is only used in part, since it has no page tables to construct. Furthermore, some parts are reused across guest and host page tables (such as the reserved bits detector) but others are not; for example permission_fault is replaced by simplified code such as is_executable_pte(). This series cleans this up by splitting kvm_mmu in three parts... Read more of this story at Slashdot.

  • A New Middle Class of Content Creators Is Quietly Quitting the 9-to-5
    by EditorDavid on 27/07/2026 at 7:34 am

    "The rise of TikTok, Instagram Reels and Amazon storefronts has created a new kind of white-collar exit strategy," reports Bloomberg. Workers ditch office jobs not to become celebrities, necessarily, "but to piece together an income online through brand deals, affiliate links and highly personal videos documenting everyday life." In many cases, the followers necessary to sustain a living are smaller (and more attainable) than people might assume. A small but loyal audience can now generate enough income to rival a midlevel salary. Welcome to the middle-class creator economy. Last year, 25-year-old Abi Platock balanced a corporate marketing job in New York while posting online in her spare time. She built her audience by posting one or two videos a day, offering career advice, beauty tips and daily vlogs. "I signed my first brand deal in the four-figure range, and for me that was just such a big eye-opening moment," Platock says of her partnership with deodorant brand Secret. She had 8,000 followers on TikTok at the time. "You can totally make it work without having hundreds of thousands of followers." Platock, who now has roughly 25,000 followers across platforms, has signed about $25,000 in brand deals so far this year and expects her annual creator income to reach around $50,000 by yearend. Her experience reflects a broader shift in advertising. Brands are increasingly moving money toward so-called microinfluencers — smaller online personalities who have less than 100,000 followers. "They are hiring a bunch of microcreators at scale instead of hiring a handful of macrocreators for what could potentially be the same cost," says Ali Grant, co-chief executive officer of the Digital Department, a creator management company. And they perform where it matters most: engagement. An engagement rate of 3% is considered strong, and some microinfluencers exceed 10%, Grant says of the closely watched metric that tracks how often followers interact with content through likes, comments, shares and saves. Microinfluencers average a 3.2% engagement rate, almost triple the 1.1% rate for macroinfluencers (more than 1 million followers), according to growth marketing agency ATTN... A TikTok partnership with a creator who has around 50,000 followers can run a brand more than $3,500 for a single post, Grant says; with 10 times the followers, that fee might just triple, to around $10,000.... The influencer marketing economy ballooned to a projected $33 billion in 2025 up from $1.7 billion in 2015. The segment gained momentum after the COVID-19 pandemic, as dissatisfaction with traditional work pushed many to reconsider conventional career paths, says Brooke Duffy, a professor of communications at Cornell University. "They realized the trade-offs in terms of the investments of time, energy and human capital were not necessarily worth sacrificing so much of one's personal self for," she says. Success online can bring greater freedom — and even higher pay than many traditional office jobs, which have a median US salary of $69,000, according to Glassdoor. But the middle-class hustle still requires constant effort to maintain. The career has no promise of lifetime longevity. And unlike traditional workers, creators have no predictable paycheck or job protections, making career stability elusive. Roughly 57% of 3,000 surveyed full-time creators earn below a living wage from content creation, according to a report last year from Influencer Marketing Hub. Income from social media can fluctuate wildly from month to month, driven by shifts in algorithms, sponsorship cycles and platform trends. "You could have a month where you make zero dollars, or you could have a month where you make $10,000," Platock says. The article cites Gallup Poll data released last year that found employee engagement in the U.S. had fallen to its lowest level in a decade [with engagement defined as "the psychological attachment workers have to their work/team/employer]. "Among the hardest-hit groups were Generation Z and workers in finance and technology. Broader workplace challenges, including rapid organizational change, hybrid and remote work transitions, and rising employee expectations are considered drivers of the overall trend." "For many workers, influencing can seem like a better deal; flexible schedules and independence wrapped in a veneer of creativity and fun. Almost 60% of Gen Zers say they'd become an influencer if given the opportunity, according to a 2023 survey from Morning Consult." Read more of this story at Slashdot.

  • 2.1 Million People View Leaked 'Odyssey' Bootleg on X
    by EditorDavid on 27/07/2026 at 4:34 am

    Variety reports: "The Odyssey" leaks have begun, as a high-quality bootleg of the film reached millions of people on X thanks to a viral tweet on July 25. At 2:25 p.m. PT, a post on X reading "Someone uploaded 'The Odyssey' full movie on X. Can you believe it?" amplified a message from a now-suspended account. The message included a high-quality version of the film, as confirmed by Variety, and climbed to over 2.1 million views within two and a half hours. By that time, the streaming film was replaced by a takedown notice, and then the account was suspended... As of July 26, a few clones of the bootlegged film are available on X, but they've been mostly flooded away by mislabeled files promising "The Odyssey" but actually showing a Rickroll, the longtime internet prank of tricking people into watching the music video for Rick Astley's 1987 song "Never Gonna Give You Up." The article notes the leak "certainly doesn't seem to have hurt the film's still-surging box office in its second weekend, during which it earned another $87 million," or lessened demand for Imax 70 mm tickets. Read more of this story at Slashdot.

  • 'Inside the Dystopian World of Germany's Free Speech Crackdown'
    by EditorDavid on 27/07/2026 at 1:34 am

    Thousands of Germans have been threatened with fines or prison sentences for social media posts, reports The Telegraph, calling the country's political speech laws "unusually stringent for an EU member state." One German had his home raided for calling a minister a "Schwachkopf [dummy]" while another was fined €2,000 (£1,700) for calling Friedrich Merz a "lying Fritz" under a law that, critics claim, makes it effectively illegal to make fun of politicians. The number of investigations under Section 86a, the Nazi symbols ban... has more than doubled over the past decade according to official police statistics. Investigations into the "political insult" law also reached record levels in 2025. The surge in cases is so vast that the UN has launched an investigation into free speech violations in Germany, a step typically reserved for dictatorships and banana republics... In one recent case, a pensioner was investigated under Section 188 for posting "Pinocchio is coming" on Facebook, after he learnt Friedrich Merz, the chancellor, was visiting his hometown... The case was dropped after the story caused an outcry in Germany, and police have since clarified that calling the chancellor Pinocchio is not a crime... In November 2024, police in Bavaria raided the home of another pensioner because he called Robert Habeck, the then vice-chancellor of Germany, a "schwachkopf", or dummy. The raid was reportedly launched after Mr Habeck personally filed a criminal complaint against the pensioner. Prosecutors eventually dropped the investigation after deciding that the insult "dummy" was not of "sufficient weight" to merit criminal charges. While such cases might seem like bizarre outliers, there are plenty of others. In 2021, police raided a man's apartment in Hamburg after he told a senator "you're such a d---," and this year a resident was fined €2,000 for calling Mr Merz a "lying Fritz". Official figures show a record 4,792 Section 188 cases were filed in Germany in 2025, with the numbers rising by nearly 85 per cent between 2023 and 2025. The article notes both left- and right-leaning free speech activists in Germany are calling for some of the stricter laws to be scrapped. And it adds that the uproar "bears some similarities to the free speech debate in Britain, where citizens have had a knock on the door from police over opinions posted online." Read more of this story at Slashdot.

  • NASA Replaces ULA's Vulcan Centaur With SpaceX Falcon Heavy For Solar Storm Research
    by EditorDavid on 26/07/2026 at 9:46 pm

    There's been a change to NASA's launch of six satellites for solar storms research. Space.com reports that those satellites "were originally slated to lift off on a United Launch Alliance Vulcan Centaur rocket but have now been assigned a SpaceX Falcon Heavy, according to a NASA mission update." [NASA's Sun Radio Interferometer Space Experiment mision — or SunRISE] will fly to space as part of a rideshare mission sponsored by the U.S. Space Force's Space Systems Command. Though it's not stated specifically in the NASA release, that may be a hint as to why the mission's rocket was changed. On its most recent launch [U.S. Space Force mission USSF-87], Vulcan experienced an anomaly in one of its solid rocket boosters — the second such incident to occur during the rocket's four launches to date. Vulcan succeeded in delivering the USSF-87 payload to its designated orbit on that launch, but the recurrence of the booster issue during ascent prompted the Space Force to pause national security launches on Vulcan until it could be addressed. Which mission SunRISE will be manifested on has not yet been released, but Space Force's Space Systems Command [SSC] has already shifted other launches between Vulcan and SpaceX's Falcon 9... Falcon Heavy is SpaceX's heavy-lift launch vehicle... that consists of three modified Falcon 9 first stages, and has launched 12 times since it debuted in 2018. Four of those have delivered national security payloads to orbit, with the most recent of those, USSF-52, launching in December 2023. Falcon Heavy's most recent flight overall occurred this past April, when it sent the Viasat-3 F3 telecom satellite to orbit. Falcon Heavy's next mission will lift off with NASA's Nancy Roman Space Telescope, currently set for no earlier than Aug. 30. SunRISE is scheduled to launch later this year... Sientists will use data collected by the satellites "to improve prediction models for impending space weather, which in turn could lead to mitigation plans to better thwart the effects of such solar events on orbital infrastructure." Thanks to long-time Slashdot reader schwit1 for sharing the article. 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