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Twitter
Frederic Jacobs
@asanso @Leptan @real_or_random I've heard from Schnorr as well confirming that the upload on ePrint was his: "It is obvious that my paper destroys the RSA cryptosystem."
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Twitter
にゅむ@絵師100人展
おひるね
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The Air Force Is Having to Reverse Engineer Parts of Its Own Stealth Bomber https://www.thedrive.com/the-war-zone/39537/the-air-force-needs-to-reverse-engineer-parts-of-its-own-stealth-bomber
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M1 MacBook Air Hits 900GFlops in the Browser with Safari's Experimental WebGPU https://jott.live/markdown/m1_webgpu_perf
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fs.promises.readFile is 40% slower than fs.readFile https://github.com/nodejs/node/issues/37583
GitHub
fs.promises.readFile is 40% slower than fs.readFile · Issue #37583 · nodejs/node
Version: 15.10.0 Platform: macOS Subsystem: 11.2.1 What steps will reproduce the bug? Run this benchmark on a 1 MB file (big.file): const Benchmark = require("benchmark"); const fs = requ...
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Accidentally quadratic: When Python is faster than C++ https://arxiv.org/abs/1911.12338
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Iceberg simulator – draw an iceberg and see how it floats and melts https://engaging-data.com/iceberger-remixed/?h=
Engaging Data
Iceberger Remixed - Iceberg Simulator - Engaging Data
Based on Josh Tauberer's Iceberger, this lets you make some pre-made icebergs designs to see how they float and you can also interact with them.
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Don’t blindly prefer emplace_back to push_back https://quuxplusone.github.io/blog/2021/03/03/push-back-emplace-back/
Arthur O’Dwyer
Don’t blindly prefer emplace_back to push_back
In one of my recent training courses, a student informed me that both clang-tidy
and PVS-Studio were complaining about some code of the form
and PVS-Studio were complaining about some code of the form
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Lion: A formally verified, 5-stage pipeline RISC-V core https://github.com/standardsemiconductor/lion
GitHub
GitHub - standardsemiconductor/lion: Where Lions Roam: RISC-V on the VELDT
Where Lions Roam: RISC-V on the VELDT. Contribute to standardsemiconductor/lion development by creating an account on GitHub.
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An Introduction to Lockless Algorithms https://lwn.net/Articles/844224/
LWN.net
An introduction to lockless algorithms
Lockless algorithms are of interest for the Linux kernel when traditional locking primitives ei [...]
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Apache Age: A Graph Extension for PostgreSQL https://age.apache.org/
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Reverse-engineering Rosetta 2 Part 1: Analyzing AoT files and the runtime https://ffri.github.io/ProjectChampollion/part1/
The Archimedeans
The Cambridge University Mathematical Society
https://www.youtube.com/channel/UCdswONpWjfKTbpkBUP4fOyA
The Cambridge University Mathematical Society
https://www.youtube.com/channel/UCdswONpWjfKTbpkBUP4fOyA
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当比特翻转发生在 PC 访问 windows.com 域名期间
2021-03-05 16:24 #安全
比特翻转（Bitflips）是指储存在电子设备上的个别比特发生翻转的事件，比如从 0 变为 1 或反之亦然。导致比特翻转的自然原因主要包括宇宙射线、功率波动和温度。2010 年的一项研究估计，4G 内存的计算机在三天内有 96% 的几率会发生比特翻转。即使比特发生翻转，大部分人可能也感受不到影响。一位独立研究员 提出了一种发生比特翻转的可能场景：当 Windows PC 尝试访问微软的域名。Windows PC 会频繁访问微软的域名以检查时钟是否精确，或者连上微软的云服务，或者报告崩溃事件。如果 PC 在尝试访问 windows.com 域名发生了比特翻转，导致访问了名叫 whndows.com 的域名？而这个域名恰好控制在恶意者的手中？研究人员发现了 32 个比特翻转后有效的域名，其中 14 个可以购买。他购买了这些域名，在两周时间内记录到了来自 626 个 IP 地址的 199,180 次尝试访问 ntp.windows.com 域名的连接。Windows 操作系统的 NTP 客户端没有身份验证，因此攻击者可以返回 2038 年的时间，让 32 位时间计数溢出。也有人指出，PC 访问这些域名未必是比特翻转导致的，因为也可能是输错了。
2021-03-05 16:24 #安全
比特翻转（Bitflips）是指储存在电子设备上的个别比特发生翻转的事件，比如从 0 变为 1 或反之亦然。导致比特翻转的自然原因主要包括宇宙射线、功率波动和温度。2010 年的一项研究估计，4G 内存的计算机在三天内有 96% 的几率会发生比特翻转。即使比特发生翻转，大部分人可能也感受不到影响。一位独立研究员 提出了一种发生比特翻转的可能场景：当 Windows PC 尝试访问微软的域名。Windows PC 会频繁访问微软的域名以检查时钟是否精确，或者连上微软的云服务，或者报告崩溃事件。如果 PC 在尝试访问 windows.com 域名发生了比特翻转，导致访问了名叫 whndows.com 的域名？而这个域名恰好控制在恶意者的手中？研究人员发现了 32 个比特翻转后有效的域名，其中 14 个可以购买。他购买了这些域名，在两周时间内记录到了来自 626 个 IP 地址的 199,180 次尝试访问 ntp.windows.com 域名的连接。Windows 操作系统的 NTP 客户端没有身份验证，因此攻击者可以返回 2038 年的时间，让 32 位时间计数溢出。也有人指出，PC 访问这些域名未必是比特翻转导致的，因为也可能是输错了。
Forwarded from Hacker News (yahnc_bot)
A warning about 5.12-rc1 https://lwn.net/Articles/848265/
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Microsoft's list of banned C functions https://github.com/x509cert/banned/blob/master/banned.h
GitHub
banned/banned.h at master · x509cert/banned
Banned.h - deprecated C runtime functions. Contribute to x509cert/banned development by creating an account on GitHub.