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

  • Age Bias is Still the Default at Work But the Data is Turning
    by msmash on 09/02/2026 at 2:12 pm

    A mounting body of research is making it harder for companies to justify what most of them still do -- push experienced workers out the door just as they're hitting their professional peak. A 2025 study published in the journal Intelligence analyzed 16 cognitive, emotional and personality dimensions and found that while processing speed declines after early adulthood, other capabilities -- including the ability to avoid distractions and accumulated knowledge -- continue to improve, putting peak overall functioning between ages 55 and 60. AARP and OECD data back this up at the firm level: a 10-percentage-point increase in workers above 50 correlates with roughly 1.1% higher productivity. A 2022 Boston Consulting Group study found cross-generational teams outperform homogeneous ones. UK retailer B&Q staffed a store largely with older workers in 1989 and saw profits rise 18%. BMW implemented 70 ergonomic changes at a German plant in 2007 and recorded a 7% productivity gain. Yet an Urban Institute analysis of U.S. data from 1992 to 2016 found more than half of workers above 50 were pushed out of long-held jobs before they chose to retire. Read more of this story at Slashdot.

  • New Raspberry Pi 4 Model Splits RAM Across Dual Chips
    by EditorDavid on 09/02/2026 at 12:34 pm

    The blog OMG Ubuntu reports that a new version of the Raspberry Pi 4 Model B has been (quietly) introduced. "The key difference? It now uses a dual-RAM configuration." The Raspberry Pi 4 Model B (PCB 13a) adopts a dual-RAM configuration to 'improve supply chain flexibility' and manufacturing efficiency, per a company product change notice document. Earlier versions of the Raspberry Pi 4 use a single RAM chip on the top of the board. The new revision adds a second LPDDR4 chip to the underside, with a couple of passive components also moved over... In moving to a dual-chip layout, Raspberry Pi can combine two smaller — and marginally cheaper — modules to hit the same RAM totals amidst fluctuating component costs... This change will not impact performance (for better or worse). The Broadcom BCM2711 SoC has a 32-bit wide memory interface so the bandwidth stays identical; this is not doubling the memory bus, it's just a physical split, not a logical one. Plus, the new board is fully compatible with existing official accessories, HATs and add-ons. All operating systems that support the Pi 4 will work, but as the memory setup is different a new version of the boot-loader will need to be flashed first. Read more of this story at Slashdot.

  • SpaceX Prioritizes Lunar 'Self-Growing City' Over Mars Project, Musk Says
    by EditorDavid on 09/02/2026 at 8:34 am

    "Elon Musk said on Sunday that SpaceX has shifted its focus to building a 'self-growing city' on the moon," reports Reuters, "which could be achieved in less than 10 years." SpaceX still intends to start on Musk's long-held ambition of a city on Mars within five to seven years, he wrote on his X social media platform, "but the overriding priority is securing the future of civilization and the Moon is faster." Musk's comments echo a Wall Street Journal report on Friday, stating that SpaceX has told investors it would prioritize going to the moon and attempt a trip to Mars at a later time, targeting March 2027 for an uncrewed lunar landing. As recently as last year, Musk said that he aimed to send an uncrewed mission to Mars by the end of 2026. Read more of this story at Slashdot.

  • National Football League Launches Challenge to Improve Facemasks and Reduce Concussions
    by EditorDavid on 09/02/2026 at 5:34 am

    As Super Bowl Sunday comes to a close, America's National Football League "is challenging innovators to improve the facemask on football helmets to reduce concussions in the game," reports the Associated Press: The league announced on Friday at an innovation summit for the Super Bowl the next round in the HealthTECH Challenge series, a crowdsourced competition designed to accelerate the development of cutting-edge football helmets and new standards for player safety. The challenge invites inventors, engineers, startups, academic teams and established companies to improve the impact protection and design of football helmets through improvements to how facemasks absorb and reduce the effects of contact on the field... Most progress on helmet safety has come from improvements to the shell and padding, helping to reduce the overall rate of concussions. Working with the helmet industry, the league has brought in position-specific helmets, with those for quarterbacks, for example, having more padding in the back after data showed most concussions for QBs came when the back of the head slammed to the turf. But the facemask has mostly remained the same. This past season, 44% of in-game concussions resulted from impact to the player's facemask, up from 29% in 2015, according to data gathered by the NFL. "What we haven't seen over that period of time are any changes of any note to the facemask," [said Jeff Miller, the NFL's executive vice president overseeing player health and safety]... "Now we see, given the changes in our concussion numbers and injuries to players, that as changes are made to the helmet, fewer and fewer concussions are caused by hits to the shell, and more and more concussions as a percentage are by hits to the facemask..." Selected winners will receive up to $100,000 in aggregate funding, as well as expert development support to help move their concepts from the lab to the playing field. Winners will be announced in August, according to the article, "and Miller said he expected helmet manufacturers to start implementing any improvements into helmets soon after that." Read more of this story at Slashdot.

  • Carmakers Rush To Remove Chinese Code Under New US Rules
    by EditorDavid on 09/02/2026 at 2:34 am

    "How Chinese is your car?" asks the Wall Street Journal. "Automakers are racing to work it out." Modern cars are packed with internet-connected widgets, many of them containing Chinese technology. Now, the car industry is scrambling to root out that tech ahead of a looming deadline, a test case for America's ability to decouple from Chinese supply chains. New U.S. rules will soon ban Chinese software in vehicle systems that connect to the cloud, part of an effort to prevent cameras, microphones and GPS tracking in cars from being exploited by foreign adversaries. The move is "one of the most consequential and complex auto regulations in decades," according to Hilary Cain, head of policy at trade group the Alliance for Automotive Innovation. "It requires a deep examination of supply chains and aggressive compliance timelines." Carmakers will need to attest to the U.S. government that, as of March 17, core elements of their products don't contain code that was written in China or by a Chinese company. The rule also covers software for advanced autonomous driving and will be extended to connectivity hardware starting in 2029. Connected cars made by Chinese or China-controlled companies are also banned, wherever their software comes from... The Commerce Department's Bureau of Industry and Security, which introduced the connected-vehicle rule, is also allowing the use of Chinese code that is transferred to a non-Chinese entity before March 17. That carve-out has sparked a rush of corporate restructuring, according to Matt Wyckhouse, chief executive of cybersecurity firm Finite State. Global suppliers are relocating China-based software teams, while Chinese companies are seeking new owners for operations in the West. Thanks to long-time Slashdot reader schwit1 for sharing the article. Read more of this story at Slashdot.

  • Amazon Delivery Drone Crashes into Texas Apartment Building
    by EditorDavid on 08/02/2026 at 11:34 pm

    "You can hear the hum of the drone," says a local newscaster, "but then the propellors come into contact with the building, chunks of the drone later seen falling down. The next video shows the drone on the ground, surrounded by smoke... "Amazon tells us there was minimal damage to the apartment building, adding they are working with the appropriate people to handle any repairs." But there were people standing outside, notes the woman who filmed the crash, and the falling drone "could've hit them, and they would've hurt." More from USA Today: Cesarina Johnson, who captured the collision from her window, told USA TODAY that the collision seemed to happen "almost immediately" after she began to record the drone in action... "The propellers on the thing were still moving, and you could smell it was starting to burn," Johnson told Fox 4 News. "And you see a few sparks in one of my videos. Luckily, nothing really caught on fire where it got, it escalated really crazy." According to the outlet, firefighters were called out of an abundance of caution, but the "drone never caught fire...." Amazon employees can be seen surveying the scene in the clip. Johnson told the outlet that firefighters and Amazon workers worked together to clean up before the drone was loaded into a truck. Another local news report points out Amazon only began drone delivery in the area late last year. The San Antonio Express News points out that America's Federal Aviation Administration "opened an investigation into Amazon's drone delivery program in November after one of its drone struck an Internet cable line in Waco." 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