File for lab-3

Lab-3/Readme.md

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+# Lab - 3 : Symmetric encryption & hashing
+
+In this lab, I will perform symmetric encryption and hashing utilising one of the most widely
+used crypto tools called `Openssl`. It is widely used in Internet web servers, serving a majority
+of all web sites. OpenSSL contains an open-source implementation of the `SSL` and `TLS`
+protocols. The core library, written in the C programming language, implements basic
+cryptographic functions and provides various utility functions. Wrappers allowing the use of
+the OpenSSL library in a variety of computer languages are available.
+
+`Git Bash` is a terminal emulator for Windows that provides a Unix-like command-line experience. Git Bash is suitable for running OpenSSL commands. Since Git Bash provides a Unix-like environment on Windows, it can be used to execute OpenSSL commands. OpenSSL is typically included in the installation package. When installing Git for Windows.
+
+We also need to use an HEX editor like GHex in Ubuntu. HEX editor allow us to view and edit the binary data of files. In windows, we will use `HEX Workshop`. [install](https://download.cnet.com/hex-workshop)
+
+To check if OpenSSL is available in Git Bash, you can simply open Git Bash and type the following command:
+
+```
+openssl version
+```
+
+This command will display the version of OpenSSL installed on your system, if it is available.
+
+<hr>
+
+Tasks are provided in separate folders along with the documentation. Go to the respective folder to run commands of a specific task. Necessary resources, screenshots and commands are included.
+
+1. [Task - 1](/Lab-3/Task-1/Readme.md)
+2. [Task - 2](/Lab-3/Task-2/Readme.md)
+3. [Task - 3](/Lab-3/Task-3/Readme.md)
+4. [Task - 4](/Lab-3/Task-4/Readme.md)
+5. [Task - 5](/Lab-3/Task-5/Readme.md)
+6. [Task - 6](/Lab-3/Task-6/Readme.md)
+7. [Task - 7](/Lab-3/Task-7/Readme.md)

Lab-3/Task-1/Readme.md

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+# Task - 1