Abhisheyk Gaur on Blogger

In the realm of data security and privacy, Fully Homomorphic Encryption (FHE) stands out as a groundbreaking technology. FHE allows computations to be performed on encrypted data, returning encrypted results that, when decrypted, match the outcomes of operations performed on the plaintext. This article delves into the concept of FHE, its mathematical underpinnings, and provides a toy example using the PALISADE library. ## What is Fully Homomorphic Encryption? Fully Homomorphic Encryption is a form of encryption that enables arbitrary computations on ciphertexts. The term "homomorphic" refers to the preservation of algebraic structure under transformations. In FHE, this means that operations performed on encrypted data yield the same results as if they were performed on the unencrypted data. ### The Promise of FHE FHE offers a powerful promise: the ability to process sensitive data while maintaining complete privacy. This has significant implications for cloud computing, secur...

In the world of web development, security is paramount. One of the most common and pernicious security threats is Cross-Site Scripting, commonly known as XSS. This blog post aims to demystify XSS, explore its types, demonstrate a basic example, and discuss measures to prevent it. What is Cross-Site Scripting (XSS)? Cross-Site Scripting is a web security vulnerability that allows attackers to inject malicious scripts into webpages viewed by other users. It exploits the trust a user has for a particular site, allowing the attacker to send malicious code to an unsuspecting user through the web application. Types of XSS Attacks 1. **Reflected XSS:** The malicious script comes from the current HTTP request. 2. **Stored XSS:** The malicious script is stored on the target server. 3. **DOM-based XSS:** The vulnerability exists in the client-side code rather than the server-side code. A Simple XSS Example To understand how XSS works, let's consider a toy example. Imagine a simple web applic...