This article will explain how does public key encryption work. Public key systems underlay the security that you use every day to browse the web. The https (TLS) secure web links you use every day use public key cryptography to be able to exchange encrypted information.
This article intends to show you a simplified example of how the keys are created and how encryption and decryption are done at a basic level.
Traditional symmetric encryption requires a shared key that both parties that need to communicate know. If, let’s say, we took a stupid simple cipher of adding 1 to everything, then the person on the receiving side would need to know to subtract 1. That means 1 is your shared secret.
To share that private secret, you needed to give the other person that number securely, either in person or via some secure, trusted communication channel that you know would not be intercepted.
Public key works differently. There is no shared secret, which means two people don’t need to meet and don’t initially need a secure communication channel to exchange a shared secret. For each user, there is a private key used to decrypt things encrypted with that user’s public key.
So, in this case, public keys can be posted for anyone to use, and the only person who can read messages encrypted with the public key is the person who holds the private key.
This has been an incredible leap for secure communications, allowing the setup of a secure way to communicate with anyone without the need to share a private secret.
WARNING: To simplify the code to make it easier to understand, less than optimal algorithms were chosen, so this won’t work for a large prime. Also, for secure encryption, additional things are done to make the encryption harder to crack. This sample is just to show the core logic principles that make public/private key encryption work. Do not actually use this code as is for any encryption.
Don’t use this code anywhere near production. It was just a quick and dirty way to demonstrate at a low level the basic math/variables needed for public key. It doesn’t use cryptographic random number generation or other items.
Also note that with low prime numbers like shown here in testing, overlap and have issues with encrypting values in the message were higher than those components.
Below is a list of the best software engineering books, also known as the best software development books. Several of these had pivotal roles in the software development industry.
Clean Code by Robert C. Martin: This book is a must-read for any software engineer who wants to write clean and maintainable code. Code Complete by Steve McConnell: This book is a comprehensive guide to software construction that covers everything from design to testing Design Patterns: Elements of Reusable Object-Oriented Software by Erich Gamma, Richard Helm, Ralph Johnson, and John Vlissides: This book is a classic in the field of software engineering. The Pragmatic Programmer by Andrew Hunt and David Thomas: This book is a practical guide to software development that covers a wide range of topics, including debugging, testing, and automation. Refactoring: Improving the Design of Existing Code by Martin Fowler: This book is a must-read for any software engineer who wants to learn how to improve the design of existing code. Agile Estimating and Planning by Mike Cohn: This book is a comprehensive guide to agile estimating and planning. The Art of Computer Programming by Donald E. Knuth: This book is a comprehensive guide to computer programming. Head First Design Patterns by Eric Freeman and Elisabeth Robson: This book is a fun and engaging introduction to design patterns Patterns of Enterprise Application Architecture by Martin Fowler: This book is a comprehensive guide to designing enterprise applications. Psychology of Everyday Things by Donald A. Norman describes the how and why of designing things. While this book focuses on physical objects it translates to User Interface design. About Face : The Essentials of Interaction Design by Alan Cooper: A popular book that it’s earlier editions were known for calling out the rather poor designs of applications. Cracking the Coding Interview by Gayle Laakmann McDowell, et. Al a great book covering all sorts of coding challenges you might face in an interview. The Mythical Man-Month by Frederick P. Brooks Jr.: This book is a classic in the field of software engineering. The Phoenix Project: A Novel About IT, DevOps, and Helping Your Business Win by Gene Kim, Kevin Behr, and George Spafford: This book is a novel that tells the story of a fictional company’s journey to improve its IT operations. Essential Software Development Career + Technical Guide well you didn’t expect us to leave out this book did you? 😉Provides a comprehensive breadth of topics across the Software Engineering landscape.
If you have more ideas for the best software engineering books/ or best software development books to add, then drop a comment. Thanks for checking out some of the best books for software engineers.
A software developer, often simply referred to as a “developer,” is a professional who designs, builds, tests, and maintains software applications, systems, and websites. They use programming languages, frameworks, and various tools to create software that fulfills specific functionalities and meets user requirements. Software developers can work in various domains and industries, and their expertise can vary widely, ranging from mobile app development to web development and even specialized fields like game development, artificial intelligence, and data science. Often used as a synonym to Software Engineer (See Software Engineering). (See Wikipedia article Programmer)
Some definitions tell you a Software Engineer is similar to a Software Developer, except Software Engineers are responsible for the Architecture plus all of the things a Software Developer does. In practice, businesses and people often use these terms interchangeably.
In today’s rapidly evolving digital landscape, software developers play an important role in shaping the technological world we live in. They are the architects and engineers behind the software applications, websites, and systems that power our daily lives. But what exactly is a software developer, and what career opportunities await those who choose to embark on this exciting journey? This article aims to provide insights into the world of software development and the diverse career paths it offers.
Requirements Analysis: Developers start by understanding the specific needs and objectives of a project. They work closely with clients or stakeholders to gather and document requirements.
Coding: Developers write code in programming languages like C#, Java, Javascript, Python, PHP, Ruby, C++, and many more to create software solutions. This includes designing algorithms, implementing user interfaces, and optimizing performance.
Testing and Debugging: Ensuring the software functions correctly is essential. Developers conduct thorough testing to find and fix any bugs or issues in the code.
Essential Software Development Career + Technical GuideCollaboration: Teamwork is often a significant part of a developer’s job. They collaborate with other developers, designers, project managers, and quality assurance testers to ensure a successful project.
The field of software development offers many career paths, each with its own set of skills, challenges, and opportunities. Here are some of the most common career options:
Mobile App Developer: Mobile app developers focus on building applications for smartphones and tablets, often for iOS (using Swift) or Android (using Java or Kotlin) platforms.
Data Scientist: Data scientists use programming to analyze and interpret large sets of data, often for purposes like making predictions, identifying trends, or solving complex problems.
DevOps Engineer: DevOps engineers will help with a mix of operations and software development tasks to close the gap between software development and IT operations, automating processes and ensuring the efficient deployment and maintenance of software.
Machine Learning Engineer: These developers work on creating machine learning models and algorithms, making it possible for computers to learn and make decisions without explicit programming.
Software developers are the driving force behind the technology that shapes our lives. They have diverse career options in various fields, and as technology becomes more embedded in our lives and continues to advance, the demand for their skills will only grow. Whether you aspire to create the next big app, explore the world of data, or secure our digital future, a career as a software developer can open doors to a world of exciting opportunities. The key to success in this field lies in continuous learning, adaptability, and a passion for problem-solving in the digital realm.
Software Engineering is a methodological process for creating software following an engineering approach, applying the principles of an engineering discipline. Some might call Software development a subset of software engineering (developing part of a larger system, for example.)
Software Engineering could be considered the application of Computer Science. Some consider it a branch of Computer Science. Think of Computer Science as understanding the technical details of how hardware and software work together and the science behind it. Software Engineering is the process of using that information in practice to create software.
Software Engineer: Develops software applications and programs using programming languages such as C#, Java, Python, Ruby, PHP, C++, and others. They do work like coding, testing, and debugging errors.
Different levels of seniority can be Application Engineer, Senior Engineer, Staff Engineer/ Lead Engineer, Senior Staff Engineer/ Senior Lead Engineer. Some different areas of software development are Mobile Developer, Front end Developer, Back end Developer, Web Developer.
Software Architect: If we related this to buildings, this would be something like creating the blueprints. It is about understanding and describing how high-level software systems and technologies will work and perform together. Sometimes, this can be at a lower level of how components will operate together or how sets of components will work together. It can also go up to a level of how products or services will interact together throughout a company (Sometimes called Enterprise Architects). Software Engineering Manager: These are people who are the manager of Software Engineers. The manager doesn’t have to be someone from a computer science or engineering background if it often is for line managers.
Analyzing 2861 C# jobs in the New York metro area breaking down by education requirement: High School (28), Associate Degree (67), Bachelor or equivalent work (520 – extrapolated as 45% of those with Bachelor as a requirement), Bachelor (637 extrapolated as 55% of total Bachelors requirement), Masters (1540 *Data is wrong), and Doctorate (69).
What was shocking for me, at least, is that the job site showed 56% of the job market “seems to” prefer a master’s degree or higher. Note I this data is wrong – The first 15 jobs I checked ALL allowed for a Bachelors degree. So it would seem it’s more likely that the majority of the market would prefer a bachelors degree but about 45% of those indicate they would allow equivalent work experience alternatively.
With a BS degree, you have access to at least roughly 43% to possibly 99% of the job market (maybe more), which would definitely provide you the ability to find enough jobs in most times/markets. Without a BS degree you may have access to less than half of that market.
NOTE The chart for masters used the data the job site had for jobs requiring a masters. A quick analysis suggests that data is wrong and most jobs allow Bachelors degree.