As a developer of the PyGOST library (GOST cryptographic primitives in pure Python), I often receive questions about how to quickly implement a basic secure messaging system. Many think that applied cryptography is relatively straightforward, and that a .encrypt() call from a block cipher will suffice for safe transmission over a communication channel. Others believe that applied cryptography is the domain of a select few, and […]
The Chairman of the Association of Data Market Participants, Ivan Begtin, reported that he managed to discover around 360,000 records with personal data publicly accessible. Among other things, personal information of several Russian politicians, bankers, businessmen, and other notable individuals was found. The data leak was identified after analyzing websites of 8 government information systems. Users' personal data was discovered after […]
ASN.1 is a standard (ISO, ITU-T, GOST) for describing structured information, as well as the rules for encoding that information. For me as a programmer, it is just another format for serialization and data representation, alongside JSON, XML, XDR, and others. It is extremely common in our everyday lives, and many encounter it: in cellular, telephone, and VoIP communications (UMTS, LTE, […]
This article discusses a case on speeding up a browser application by replacing JavaScript computations with WebAssembly. What is WebAssembly? In short, it is a binary instruction format for a stack-based virtual machine. It is often referred to as a programming language (abbreviated as Wasm), but that is not correct. The instruction format is executed in the browser alongside JavaScript. Importantly, WebAssembly can be […]
If you've spent some time thinking about complex systems, you surely understand the importance of networks. Networks govern our world. From chemical reactions inside a cell to the web of relationships in an ecosystem, the trade and political networks that shape the course of history. Or consider this article you're reading. You probably found it through a social network, downloaded it from a computer network […]
This year can confidently be called the year of gaming graphics cards. In 2019, NVIDIA practically released its entire lineup - at the time of writing this article, the GeForce GTX 1650 with 4 GB of memory had already been introduced. Soon, AMD will unveil a series of gaming graphics adapters of the Navi generation, but this company has already introduced a record-breaking device - the Radeon VII, equipped with 16 GB […]
Given the rising popularity of Rook, I want to discuss its pitfalls and the challenges awaiting you along the way. About myself: I have experience administering Ceph since version Hammer and am the founder of the community t.me/ceph_ru on Telegram. To back up my claims, I will reference well-rated posts on Habr regarding issues with Ceph. You will likely encounter most of the problems in […]
Introduction I delivered this presentation in English at GopherCon Russia 2019 in Moscow and in Russian at a meetup in Nizhny Novgorod. It discusses the bitmap index — less common than the B-tree but equally interesting. I'm sharing the recording of my conference presentation in English and the written transcript in Russian. We will explore […]
Developers from Google have presented a new project that created a technology capable of translating spoken sentences from one language to another. The main difference of the new translator called Translatotron from its analogs is that it operates exclusively with audio, without using intermediate text. This approach has significantly sped up the translator's performance. Another notable […]
In the comments on my article "Docker: Harmful Advice," there were many requests to explain what is so terrible about the Dockerfile described in it. A brief recap of the previous episode: two developers under a tight deadline create a Dockerfile. During the process, Ops Igor Ivanovich walks in. The resulting Dockerfile is so bad that AI is on the verge of a heart attack. Now let's figure out what's wrong with this […]
The author of the article we're publishing today states that her goal is to tell about developing a web scraper in Python using Selenium, which searches for airline ticket prices. The scraper uses flexible dates (+- 3 days around the specified dates) when searching for tickets. It saves the search results in an Excel file and sends an email with a summary to the person who initiated the search […]
The trend of dark themes in various programs, including browsers, continues to gain momentum. It was previously reported that the Edge browser introduced such a theme, but it had to be manually enabled with flags. Now there’s no need for that. In the latest build of Microsoft Edge Canary 76.0.160.0, they added a function similar to Chrome 74. We're talking about […]