kaveer's blog

Problem      Throughout my career, I met many professionals in their respective fields and exchange a few words, and obtained their business cards as well. I used to store them in my cardholder or simply in my cupboard but it was quite frustrating to find a specific business card of someone when you need their services. moreover, there was quite some more annoying situation where I was not at home and don't have any business card at my reach but badly need to contact someone to reach out for their services so bearing in mind that modern problem requires modern solution I decided to create my own application which will solve the issue to store, search and carry all those business cards around. Solution my first solution was to download an already existing application, but some were paid application some were freemium and all of them did not have the specific feature that I want to use in my day to day basis  I started creating prototypes using two Xamarin which is a cross-platform d

Introduction Nothing better than to learn something new during our free time. A new programming language, why not. Thus to make my mind busy as a geek i tried to learn Angular 9 and create a small application nothing fancy at all and called it Asymmetric cryptography. In simple words using Angular 9 to create the client side application and hooked it up with an ASP.NET web api. To conclude i deployed the application on Microsoft azure. How it works Key generation Asymmetric cryptography uses 2 key pairs to encryption  and decryption data. The 2 keys consist of a private key and a public key. To produce a cipher text (encryption), the public key alongside with the plain text will be used. In the same way, in order to produce a plain text (decryption) the cipher text will be used with the private key. The images below illustrate how asymmetric cryptography works: To use the application first select the key length namely: 512 bit 1024 bit 2048 bit 4096 bit

Introduction An MSc project with the title Student Examination System, where the objective is to put the students in an examination condition but instead of having an invigilator in an examination center, the system will cater for the proper ongoing of the exam. the system can be used as an online examination system The system is able to: Recognizing the face shape of a particular student Detect if there is more than one person in the examination room  Analyze the typing pattern of a student and detect if any one person is taking part in the exam voice recognition for the student and detect if there is more than one person speaking in the examination room Setup Download Emgu CV from  http://www.emgu.com/wiki/index.php/Main_Page Download Haarcascade from  https://github.com/opencv/opencv/tree/master/data/haarcascades Create an account at  https://www.keytrac.net/ Face recognition The snippet below illustrates how the Emgu CV is loaded when the application starte

Google reCAPTCHA implementation ASP.NET C# Steps to implement Google reCAPTCHA in your website using technologies such as ASP.NET C#, ASP.NET web API, HTML and javascript. First you need to use your google account to login to Google reCAPTCHA  to register a new site. Add a label of your choice in the label section and for web implementation select the reCAPTCHA V2 radio button. Next in the domain section you can add several domains, for testing purposes you can add localhost also followed by another domain in the next line. Accept the terms and conditions and click on the button register. After you click register, google will generate a site key and a secret key and  instructions how to integrate it on both client and server side. Create ASP.NET Web API Next step is to open Microsoft Visual Studio and create a new project by selecting File > New from the menu bar and then select Project.  Select ASP.NET Web Application(.NET Framework) in the popup windows,