From idea to implementation: modifying the existing elliptic curve signature scheme to be deterministic and providing functions on it to obtain verifiable within the blockchain pseudorandom numbers.

As application requirements grow more complex, so do our solutions. Keeping developers’ environments configured across our organizations grows equally complex. Developers need to install specific workloads and components in order to build a solution. Some organizations add these requirements to their README or CONTRIBUTING documents in their repositories. Some organizations might publish these requirements in documents for new hires or even just forward emails. Configuring your development environment often becomes a day-long chore. What’s really needed is a declarative authoring model that just configures Visual Studio like you need it.

In Visual Studio 2017 Update 15.9 we added the ability to export and import workload and component selection to a Visual Studio installation configuration file. Developers can import these files into new or existing installations. Checking these files into your source repos makes them easy to share. However, developers still need to import these to get the features they need.

Automatically install missing components

New in Visual Studio 2019: you can save these files as .vsconfig files in your solution root directory and when the solution (or solution directory) is opened, Visual Studio will automatically detect which components are missing and prompt you to install them.

Free Wireguard VPN service on AWS

The reasoning

The increase of Internet censorship by authoritarian regimes expands the blockage of useful internet resources making impossible the use of the WEB and in essence violates the fundamental right to freedom of opinion and expression enshrined in the Universal Declaration of Human Rights.

Article 19
Everyone has the right to freedom of opinion and expression; this right includes freedom to hold opinions without interference and to seek, receive and impart information and ideas through any media and regardless of frontiers.

The following is the detailed 6 steps instruction for non-IT people to deploy free* VPN service upon Wireguard technology in Amazon Web Services (AWS) cloud infrastructure, using a 12 months free account, on an Instance (virtual machine) run by Ubuntu Server 18.04 LTS.

I tried to make this walkthrough as friendly as possible to people far from IT. The only thing required is assiduity in repeating the steps described below.

What is DevOps and Why is it important?

OAuth 2 overview

This article assumes that readers are familiar with OAuth 2. However, below a brief description of it is presented below.

1. The application requests authorization to access service resources from the user. The application needs to provide the client ID, client secret, redirect URI and the required scopes.
2. If the user authorizes the request, the application receives an authorization grant
3. The application requests an access token from the authorization server by presenting authentication of its own identity, and the authorization grant
4. If the application identity is authenticated and the authorization grant is valid, the authorization server issues the access and refresh (if required) token to the application. Authorization is complete.
5. The application requests the resource from the resource server and presents the access token for authentication
6. If the access token is valid, the resource server serves the resource to the application

The are some main Pros and Cons in OAuth 2.0

• OAuth 2.0 is easier to use and implement (compared to OAuth 1.0)
• Wide spread and continuing growing
• Short lived Tokens
• Encapsulated Tokens

— No signature (relies solely on SSL/TLS ), Bearer Tokens
— No built-in security
— Can be dangerous if used from not experienced people
— Too many compromises. Working group did not make clear decisions
— Mobile integration (web views)
— Oauth 2.0 spec is not a protocol, it is rather a framework — RFC 6749

The game industry is growing, especially among small, independent development companies. If you're looking for a game development company, let's take a glimpse at some top game development companies ranked, basing the list on games, as well as the number of existing players and uniqueness.

Earlier this week, we released Visual Studio 2019 version 16.1 Preview 1 (see release notes). It’s the first preview of the first update to Visual Studio 2019. If you’re not already set up to get preview releases, then please do that now. The preview channel installs side-by-side with the release channel and they don’t interfere with each other. I highly recommend all extension authors install the preview.

Got the 16.1 preview installed now then? That’s great. Here are some features in it you might find interesting.

Disclaimer

The Time Travel Debugging (TTD) preview in Visual Studio Enterprise 2019 provides the ability to record a Web app running on a Azure Virtual Machine (VM) and then accurately reconstruct and replay the execution path. TTD integrates with our Snapshot Debugger offering and allows you to rewind and replay each line of code however many times you want, helping you isolate and identify problems that might only occur in production environments.

Reporting has been an important capability for Azure DevOps customers who rely on Analytics to make data driven decisions.

Today, we’re excited to announce that the following Analytics features listed below will be included in our Azure DevOps Services offering at no additional cost. Customers will start to see these changes rolled out to their accounts soon.

In this article, I decided to describe how the functionality of selecting and displaying photos on a specific place on the map was implemented in our photo service gfranq.com. The photo service does not work now.

Since we had a lot of photos in our service and sending requests to database every time the viewport changes was too resource-intensive, it was logical to divide the map into several areas that contain information about the retrieved data. For obvious reasons, these areas have rectangular shape (although hexagonal grid was considered too). As the areas become more spherical at large scales, elements of spherical geometry and tools for it were also considered.

In this article, the following issues were raised:

• Storing and retrieving photos from the database and caching them on the server (SQL, C#, ASP.NET).
• Downloading necessary photos on the client side and saving them to the client cache (JavaScript).
• Recalculation of photos that must be hidden or shown when the viewport changes.
• Elements of spherical geometry.