- Blog Categories
- Software Development
- Data Science
- AI/ML
- Marketing
- General
- MBA
- Management
- Legal
- Software Development Projects and Ideas
- 12 Computer Science Project Ideas
- 28 Beginner Software Projects
- Top 10 Engineering Project Ideas
- Top 10 Easy Final Year Projects
- Top 10 Mini Projects for Engineers
- 25 Best Django Project Ideas
- Top 20 MERN Stack Project Ideas
- Top 12 Real Time Projects
- Top 6 Major CSE Projects
- 12 Robotics Projects for All Levels
- Java Programming Concepts
- Abstract Class in Java and Methods
- Constructor Overloading in Java
- StringBuffer vs StringBuilder
- Java Identifiers: Syntax & Examples
- Types of Variables in Java Explained
- Composition in Java: Examples
- Append in Java: Implementation
- Loose Coupling vs Tight Coupling
- Integrity Constraints in DBMS
- Different Types of Operators Explained
- Career and Interview Preparation in IT
- Top 14 IT Courses for Jobs
- Top 20 Highest Paying Languages
- 23 Top CS Interview Q&A
- Best IT Jobs without Coding
- Software Engineer Salary in India
- 44 Agile Methodology Interview Q&A
- 10 Software Engineering Challenges
- Top 15 Tech's Daily Life Impact
- 10 Best Backends for React
- Cloud Computing Reference Models
- Web Development and Security
- Find Installed NPM Version
- Install Specific NPM Package Version
- Make API Calls in Angular
- Install Bootstrap in Angular
- Use Axios in React: Guide
- StrictMode in React: Usage
- 75 Cyber Security Research Topics
- Top 7 Languages for Ethical Hacking
- Top 20 Docker Commands
- Advantages of OOP
- Data Science Projects and Applications
- 42 Python Project Ideas for Beginners
- 13 Data Science Project Ideas
- 13 Data Structure Project Ideas
- 12 Real-World Python Applications
- Python Banking Project
- Data Science Course Eligibility
- Association Rule Mining Overview
- Cluster Analysis in Data Mining
- Classification in Data Mining
- KDD Process in Data Mining
- Data Structures and Algorithms
- Binary Tree Types Explained
- Binary Search Algorithm
- Sorting in Data Structure
- Binary Tree in Data Structure
- Binary Tree vs Binary Search Tree
- Recursion in Data Structure
- Data Structure Search Methods: Explained
- Binary Tree Interview Q&A
- Linear vs Binary Search
- Priority Queue Overview
- Python Programming and Tools
- Top 30 Python Pattern Programs
- List vs Tuple
- Python Free Online Course
- Method Overriding in Python
- Top 21 Python Developer Skills
- Reverse a Number in Python
- Switch Case Functions in Python
- Info Retrieval System Overview
- Reverse a Number in Python
- Real-World Python Applications
- Data Science Careers and Comparisons
- Data Analyst Salary in India
- Data Scientist Salary in India
- Free Excel Certification Course
- Actuary Salary in India
- Data Analyst Interview Guide
- Pandas Interview Guide
- Tableau Filters Explained
- Data Mining Techniques Overview
- Data Analytics Lifecycle Phases
- Data Science Vs Analytics Comparison
- Artificial Intelligence and Machine Learning Projects
- Exciting IoT Project Ideas
- 16 Exciting AI Project Ideas
- 45+ Interesting ML Project Ideas
- Exciting Deep Learning Projects
- 12 Intriguing Linear Regression Projects
- 13 Neural Network Projects
- 5 Exciting Image Processing Projects
- Top 8 Thrilling AWS Projects
- 12 Engaging AI Projects in Python
- NLP Projects for Beginners
- Concepts and Algorithms in AIML
- Basic CNN Architecture Explained
- 6 Types of Regression Models
- Data Preprocessing Steps
- Bagging vs Boosting in ML
- Multinomial Naive Bayes Overview
- Gini Index for Decision Trees
- Bayesian Network Example
- Bayes Theorem Guide
- Top 10 Dimensionality Reduction Techniques
- Neural Network Step-by-Step Guide
- Technical Guides and Comparisons
- Make a Chatbot in Python
- Compute Square Roots in Python
- Permutation vs Combination
- Image Segmentation Techniques
- Generative AI vs Traditional AI
- AI vs Human Intelligence
- Random Forest vs Decision Tree
- Neural Network Overview
- Perceptron Learning Algorithm
- Selection Sort Algorithm
- Career and Practical Applications in AIML
- AI Salary in India Overview
- Biological Neural Network Basics
- Top 10 AI Challenges
- Production System in AI
- Top 8 Raspberry Pi Alternatives
- Top 8 Open Source Projects
- 14 Raspberry Pi Project Ideas
- 15 MATLAB Project Ideas
- Top 10 Python NLP Libraries
- Naive Bayes Explained
- Digital Marketing Projects and Strategies
- 10 Best Digital Marketing Projects
- 17 Fun Social Media Projects
- Top 6 SEO Project Ideas
- Digital Marketing Case Studies
- Coca-Cola Marketing Strategy
- Nestle Marketing Strategy Analysis
- Zomato Marketing Strategy
- Monetize Instagram Guide
- Become a Successful Instagram Influencer
- 8 Best Lead Generation Techniques
- Digital Marketing Careers and Salaries
- Digital Marketing Salary in India
- Top 10 Highest Paying Marketing Jobs
- Highest Paying Digital Marketing Jobs
- SEO Salary in India
- Brand Manager Salary in India
- Content Writer Salary Guide
- Digital Marketing Executive Roles
- Career in Digital Marketing Guide
- Future of Digital Marketing
- MBA in Digital Marketing Overview
- Digital Marketing Techniques and Channels
- 9 Types of Digital Marketing Channels
- Top 10 Benefits of Marketing Branding
- 100 Best YouTube Channel Ideas
- YouTube Earnings in India
- 7 Reasons to Study Digital Marketing
- Top 10 Digital Marketing Objectives
- 10 Best Digital Marketing Blogs
- Top 5 Industries Using Digital Marketing
- Growth of Digital Marketing in India
- Top Career Options in Marketing
- Interview Preparation and Skills
- 73 Google Analytics Interview Q&A
- 56 Social Media Marketing Q&A
- 78 Google AdWords Interview Q&A
- Top 133 SEO Interview Q&A
- 27+ Digital Marketing Q&A
- Digital Marketing Free Course
- Top 9 Skills for PPC Analysts
- Movies with Successful Social Media Campaigns
- Marketing Communication Steps
- Top 10 Reasons to Be an Affiliate Marketer
- Career Options and Paths
- Top 25 Highest Paying Jobs India
- Top 25 Highest Paying Jobs World
- Top 10 Highest Paid Commerce Job
- Career Options After 12th Arts
- Top 7 Commerce Courses Without Maths
- Top 7 Career Options After PCB
- Best Career Options for Commerce
- Career Options After 12th CS
- Top 10 Career Options After 10th
- 8 Best Career Options After BA
- Projects and Academic Pursuits
- 17 Exciting Final Year Projects
- Top 12 Commerce Project Topics
- Top 13 BCA Project Ideas
- Career Options After 12th Science
- Top 15 CS Jobs in India
- 12 Best Career Options After M.Com
- 9 Best Career Options After B.Sc
- 7 Best Career Options After BCA
- 22 Best Career Options After MCA
- 16 Top Career Options After CE
- Courses and Certifications
- 10 Best Job-Oriented Courses
- Best Online Computer Courses
- Top 15 Trending Online Courses
- Top 19 High Salary Certificate Courses
- 21 Best Programming Courses for Jobs
- What is SGPA? Convert to CGPA
- GPA to Percentage Calculator
- Highest Salary Engineering Stream
- 15 Top Career Options After Engineering
- 6 Top Career Options After BBA
- Job Market and Interview Preparation
- Why Should You Be Hired: 5 Answers
- Top 10 Future Career Options
- Top 15 Highest Paid IT Jobs India
- 5 Common Guesstimate Interview Q&A
- Average CEO Salary: Top Paid CEOs
- Career Options in Political Science
- Top 15 Highest Paying Non-IT Jobs
- Cover Letter Examples for Jobs
- Top 5 Highest Paying Freelance Jobs
- Top 10 Highest Paying Companies India
- Career Options and Paths After MBA
- 20 Best Careers After B.Com
- Career Options After MBA Marketing
- Top 14 Careers After MBA In HR
- Top 10 Highest Paying HR Jobs India
- How to Become an Investment Banker
- Career Options After MBA - High Paying
- Scope of MBA in Operations Management
- Best MBA for Working Professionals India
- MBA After BA - Is It Right For You?
- Best Online MBA Courses India
- MBA Project Ideas and Topics
- 11 Exciting MBA HR Project Ideas
- Top 15 MBA Project Ideas
- 18 Exciting MBA Marketing Projects
- MBA Project Ideas: Consumer Behavior
- What is Brand Management?
- What is Holistic Marketing?
- What is Green Marketing?
- Intro to Organizational Behavior Model
- Tech Skills Every MBA Should Learn
- Most Demanding Short Term Courses MBA
- MBA Salary, Resume, and Skills
- MBA Salary in India
- HR Salary in India
- Investment Banker Salary India
- MBA Resume Samples
- Sample SOP for MBA
- Sample SOP for Internship
- 7 Ways MBA Helps Your Career
- Must-have Skills in Sales Career
- 8 Skills MBA Helps You Improve
- Top 20+ SAP FICO Interview Q&A
- MBA Specializations and Comparative Guides
- Why MBA After B.Tech? 5 Reasons
- How to Answer 'Why MBA After Engineering?'
- Why MBA in Finance
- MBA After BSc: 10 Reasons
- Which MBA Specialization to choose?
- Top 10 MBA Specializations
- MBA vs Masters: Which to Choose?
- Benefits of MBA After CA
- 5 Steps to Management Consultant
- 37 Must-Read HR Interview Q&A
- Fundamentals and Theories of Management
- What is Management? Objectives & Functions
- Nature and Scope of Management
- Decision Making in Management
- Management Process: Definition & Functions
- Importance of Management
- What are Motivation Theories?
- Tools of Financial Statement Analysis
- Negotiation Skills: Definition & Benefits
- Career Development in HRM
- Top 20 Must-Have HRM Policies
- Project and Supply Chain Management
- Top 20 Project Management Case Studies
- 10 Innovative Supply Chain Projects
- Latest Management Project Topics
- 10 Project Management Project Ideas
- 6 Types of Supply Chain Models
- Top 10 Advantages of SCM
- Top 10 Supply Chain Books
- What is Project Description?
- Top 10 Project Management Companies
- Best Project Management Courses Online
- Salaries and Career Paths in Management
- Project Manager Salary in India
- Average Product Manager Salary India
- Supply Chain Management Salary India
- Salary After BBA in India
- PGDM Salary in India
- Top 7 Career Options in Management
- CSPO Certification Cost
- Why Choose Product Management?
- Product Management in Pharma
- Product Design in Operations Management
- Industry-Specific Management and Case Studies
- Amazon Business Case Study
- Service Delivery Manager Job
- Product Management Examples
- Product Management in Automobiles
- Product Management in Banking
- Sample SOP for Business Management
- Video Game Design Components
- Top 5 Business Courses India
- Free Management Online Course
- SCM Interview Q&A
- Fundamentals and Types of Law
- Acceptance in Contract Law
- Offer in Contract Law
- 9 Types of Evidence
- Types of Law in India
- Introduction to Contract Law
- Negotiable Instrument Act
- Corporate Tax Basics
- Intellectual Property Law
- Workmen Compensation Explained
- Lawyer vs Advocate Difference
- Law Education and Courses
- LLM Subjects & Syllabus
- Corporate Law Subjects
- LLM Course Duration
- Top 10 Online LLM Courses
- Online LLM Degree
- Step-by-Step Guide to Studying Law
- Top 5 Law Books to Read
- Why Legal Studies?
- Pursuing a Career in Law
- How to Become Lawyer in India
- Career Options and Salaries in Law
- Career Options in Law India
- Corporate Lawyer Salary India
- How To Become a Corporate Lawyer
- Career in Law: Starting, Salary
- Career Opportunities: Corporate Law
- Business Lawyer: Role & Salary Info
- Average Lawyer Salary India
- Top Career Options for Lawyers
- Types of Lawyers in India
- Steps to Become SC Lawyer in India
- Tutorials
- Software Tutorials
- C Tutorials
- Recursion in C: Fibonacci Series
- Checking String Palindromes in C
- Prime Number Program in C
- Implementing Square Root in C
- Matrix Multiplication in C
- Understanding Double Data Type
- Factorial of a Number in C
- Structure of a C Program
- Building a Calculator Program in C
- Compiling C Programs on Linux
- Java Tutorials
- Handling String Input in Java
- Determining Even and Odd Numbers
- Prime Number Checker
- Sorting a String
- User-Defined Exceptions
- Understanding the Thread Life Cycle
- Swapping Two Numbers
- Using Final Classes
- Area of a Triangle
- Skills
- Explore Skills
- Management Skills
- Software Engineering
- JavaScript
- Data Structure
- React.js
- Core Java
- Node.js
- Blockchain
- SQL
- Full stack development
- Devops
- NFT
- BigData
- Cyber Security
- Cloud Computing
- Database Design with MySQL
- Cryptocurrency
- Python
- Digital Marketings
- Advertising
- Influencer Marketing
- Search Engine Optimization
- Performance Marketing
- Search Engine Marketing
- Email Marketing
- Content Marketing
- Social Media Marketing
- Display Advertising
- Marketing Analytics
- Web Analytics
- Affiliate Marketing
- MBA
- MBA in Finance
- MBA in HR
- MBA in Marketing
- MBA in Business Analytics
- MBA in Operations Management
- MBA in International Business
- MBA in Information Technology
- MBA in Healthcare Management
- MBA In General Management
- MBA in Agriculture
- MBA in Supply Chain Management
- MBA in Entrepreneurship
- MBA in Project Management
- Management Program
- Consumer Behaviour
- Supply Chain Management
- Financial Analytics
- Introduction to Fintech
- Introduction to HR Analytics
- Fundamentals of Communication
- Art of Effective Communication
- Introduction to Research Methodology
- Mastering Sales Technique
- Business Communication
- Fundamentals of Journalism
- Economics Masterclass
- Free Courses
What is End-to-End Encryption? How It Works, and Why We Need It
Updated on 30 November, 2022
5.68K+ views
• 7 min read
Table of Contents
- What is end-to-end encryption?
- How does end-to-end encryption work?
- An Example of End-to-End Encryption
- How is end-to-end encryption different from encryption-in-transit?
- Why do we need end-to-end encryption?
- Advantages of End-to-End Encryption
- Challenges with End-to-End Encryption
- Conclusion
- upGrad Advanced Certificate Program in Cybersecurity
Since data is one of the most valuable resources in today’s digital age, every business must prioritize data protection and security. Moreover, with cybercrime at an all-time high, protecting data and IT infrastructure from malicious intent has become paramount.
Data encryption in cyber security is fundamental to ensure no malicious parties gain access to sensitive information. It involves converting standard text into unreadable formats (encryption) so only authorized users can read it. A critical line of defense in cybersecurity architecture, data encryption is widely used by large organizations and individual users to protect information exchanged between a browser and server. Whether personal information like credit card transaction details or classified government intelligence, encryption mechanism applies to almost every data protection need.
This article will explore the concept of end-to-end encryption, how it works, and why we need it for secure and private communication.
Learn Software Development Courses online from the World’s top Universities. Earn Executive PG Programs, Advanced Certificate Programs or Masters Programs to fast-track your career.
What is end-to-end encryption?
End-to-end encryption is a secure communication method that prevents unauthorized third parties from accessing data while transferring it from one device or system to another. In end-to-end encryption, the data on the sender’s system or device is encrypted or transformed into an unreadable format that only the intended receiver can decipher or decrypt. The process involves using encryption keys to scramble data, ensuring that only authorized parties can decode and read it. Thus, any third party cannot intercept the encrypted data, including hackers, application service providers, and internet service providers while in transit.
How does end-to-end encryption work?
End-to-end encryption works on the asymmetric or public-key cryptography principle involving a public-private key pair.
In encryption technology, keys are random bits for encrypting and decrypting data. The public key encrypts data, is widely shared, and is accessible to all, whereas the private key is only available with the authorized receiver and is used to decrypt data. In public-key cryptography, each public key has its corresponding unique private key, and together they are used to encrypt and decrypt messages. So, if you encrypt a message using a person’s public key, only they can decrypt it using the matching private key.
End-to-end encryption is the gold standard for securing communication, with encryption occurring at the device level. In other words, encryption of messages and files occurs before they leave a system or device and are not decrypted until they reach the authorized destination. As a result, hackers and other unwanted third parties cannot access data on the server since they do not have the private key to decode the data. However, only authorized individuals have the secret or private key stored on their device, which allows them to access the data.
An Example of End-to-End Encryption
Now, let’s try and understand the concept of end-to-end encryption with the help of a simple example.
Suppose Bob wants to send Chris an end-to-end encrypted email. The end-to-end encryption system provides each party with a public-private key pair. While the public keys are stored on the server, the private keys are held on their respective devices.
Now, Bob will use Chris’s public key to encrypt the email, and when Chris receives the email, they will use the private key on their device to decrypt the message from Bob. Likewise, if Chris wants to reply to the email, they will encrypt their message to Bob using Bob’s public key.
How is end-to-end encryption different from encryption-in-transit?
Encryption-in-transit is another data encryption technology. It begins with data encryption at the sender’s end, which is then delivered to the server, followed by decryption and re-encryption before being delivered to the receiver. Finally, the data is decrypted on the receiver’s end. Although encryption-in-transit protects data during the transmission, it allows the server to intercept the content. This means encryption-in-transit is a server-side encryption method only for unauthorized third parties.
On the contrary, end-to-end encryption ensures that only parties with the decryption key can view and process the data. Therefore, only the legitimate receivers can access the data while unintended links and third parties are restricted from reading or modifying the content.
Why do we need end-to-end encryption?
The main reason why end-to-end encryption is necessary is that it provides users security of their messages and files from when the data leaves the sender’s device/system until the intended recipient receives it. In addition, encryption on either end ensures that no third party can intercept the data while in transit.
Overall, end-to-end encryption protects users’ data against the following threats:
Snooping third parties:
Since only the authorized sender and receiver have the keys to decrypt end-to-end encrypted messages, the system ensures that no third party has access to the transmitted data.
Data tampering:
End-to-end encryption protects encrypted messages from being altered while in transit. Any meddling attempt would be apparent since there is no way an encrypted message can be changed.
Popular Courses & Articles on Software Engineering
Advantages of End-to-End Encryption
The benefits of end-to-end encryption technology include:
Data security in transit
In transit, data protection and data security are the primary advantages of end-to-end encryption. The technology uses public-key cryptography so that only the endpoint devices have private keys. Since only the private keys can decrypt data, only the parties with access to the endpoint devices can read messages.
Protection from data meddling
If encrypted messages are tampered with while in transit, the recipient cannot decrypt them. However, the decryption keys are with the authorized recipients in end-to-end encryption. So, there is no scope for data tampering or alteration in transit.
Regulatory compliance
Most organizations are bound by data security compliance. It refers to the regulations and standards governing government organizations and companies keeping data private, secure, and safe from threats and breaches. Such compliance measures often mandate encryption-level data security.
Challenges with End-to-End Encryption
End-to-end encryption technology is a crucial component of modern data security measures. However, it too has its limitations.
The challenges with using end-to-end encryption technology include:
Unprotected metadata
Although end-to-end encryption hides the content of the exchanged information, it does not protect the metadata, such as the parties in the exchange or the date and time of transfer. The metadata can give malicious third parties enough clues about where they can intercept the data once decrypted.
Compromised endpoints
Since the technology only protects data between the endpoints, it does not address the issue that the endpoints can be compromised and vulnerable to threats. Therefore, it is pertinent that organizations implement endpoint security to ensure data protection beyond transit.
Man-in-the-middle attacks
MitM or man-in-the-middle attacks involve hackers inserting themselves between two endpoints, eavesdropping, and intercepting messages. They do so by impersonating one of the parties, making it appear as if the usual information exchange is underway. The typical goals of MitM attacks are to steal login credentials, personal information, credit card numbers, illicit password changes, etc.
Conclusion
End-to-end encryption has obvious benefits over traditional clear text messages, where data exchanges occur without any encryption. It is also preferable to encryption-in-transit, where the messages are decrypted and re-encrypted at the intermediate server, which, in turn, serves as a vulnerable point. But despite its advantages, end-to-end encryption has its limitations, such as endpoint vulnerabilities, MtiM attacks, exposed metadata. Yet, the technology remains a security benchmark for organizations worldwide, with prominent apps like WhatsApp, Telegram, and Facebook Messenger offering the end-to-end encryption feature by default.
upGrad Advanced Certificate Program in Cybersecurity
Cybersecurity is a flourishing field with promising career prospects. upGrad’s Advanced Certificate Program in Cybersecurity in partnership with Purdue University offers a cutting-edge curriculum in cybersecurity to make you ready for professional security roles.
Program Overview:
- Certificate of recognition from upGrad and Purdue University
- 300+ learning hours and 15+ live sessions
- Four projects
- 360-degree learning support
- Peer learning and industry networking
Sign up and avail your chance to learn from the best!
Also, check our Blockchain Certificate Program from PURDUE University.
Frequently Asked Questions (FAQs)
1. What does end-to-end encryption mean?
End-to-end encryption means data encryption occurs on the sender’s device or system, and only the intended receiver can decrypt it. It offers a secure mode of communication preventing unauthorized access to data in transit.
2. What are end-to-end encrypted messages?
End-to-end encrypted messages mean that all texts and media files are encrypted as they travel between devices or systems. Encryption transforms data into an unreadable format that the intended recipient can decode only with a secret key.
3. Can encryption be hacked?
While end-to-end encryption has a prominent role in ensuring secure communication, it does not address the risks and vulnerabilities at the endpoints. Hacking endpoint devices exposes encryption keys to theft. Moreover, MtiM attacks enable hackers to impersonate one of the communicating parties and intercept messages while remaining undetected.
RELATED PROGRAMS