RSA (Rivest-Shamir-Adleman) is a classic asymmetric encryption algorithm proposed by three cryptographers Ron Rivest, Adi Shamir, and Leonard Adleman in 1977. Its core function is to achieve secure communication through public key encryption and private key decryption, widely used in digital signatures, SSL/TLS protocols, data encryption, and other fields. Key Generation Principle of RSA Significance … Read more
Bouncy Castle Cryptographic Library: Making Data Security Simpler! Hello everyone, I am a programmer passionate about cryptography. Today, I want to share with you the powerful cryptographic library in the Java world—Bouncy Castle. It not only provides a rich set of cryptographic algorithms but also ensures high reliability in security. As a cryptography enthusiast, I … Read more
The historical development of cryptographic algorithms is a reflection of the continuous struggle and progress of human intelligence and technology. Below is a detailed chronological introduction: 1. Classical Cryptography (Before 5th Century) Caesar Cipher (1st Century BC) The earliest monoalphabetic substitution cipher, which encrypts by shifting the alphabet by a fixed number of positions (e.g., … Read more
Understanding Java Security: Implementing Data Encryption Protection with Symmetric and Asymmetric Encryption Algorithms In the digital world, our data is as precious as our own treasures. Imagine you have a diary filled with secrets that you certainly wouldn’t want others to casually peek at. In the realm of computing, data is no different; we need … Read more
Homomorphic encryption (HE) is a special encryption mode in cryptography that satisfies the property of homomorphic operations on ciphertexts. This means that after data is homomorphically encrypted, specific calculations can be performed on the ciphertext, and the result of these calculations, when subjected to corresponding homomorphic decryption, will be equivalent to performing the same calculations … Read more
Java Encryption Algorithms: Principles of Symmetric Encryption, Asymmetric Encryption, and Hash Functions In modern information technology, data security is a crucial topic. To protect sensitive information, we often need to use various encryption algorithms. This article will detail the three main encryption algorithms in Java: Symmetric Encryption, Asymmetric Encryption, and Hash Functions, along with corresponding … Read more
Click on “Xuan Ge Talks Chips” above to follow for more exciting content! Many products now implement OTA functionality, allowing for continuous optimization of features and providing users with more functional experiences. Of course, the most important aspect, I guess, is still to solve bug issues. If a product becomes a bestseller, to avoid being … Read more
We previously introduced that the forwarding performance of IPsec VPN varies with different encryption algorithms (using vSRX to test the performance differences of various IPsec VPN encryption algorithms), but does OpenVPN have this issue? First, we need to confirm the algorithm information used during the OpenVPN negotiation process. For the default configuration, the algorithm information … Read more
The RSA encryption algorithm is the cornerstone of modern information security, widely used in network communication, data encryption, and e-commerce. However, with the rapid development of quantum computing, traditional cryptography faces unprecedented challenges. Especially in the era of Noisy Intermediate-Scale Quantum (NISQ) computing, the Variational Quantum Factorization (VQF) algorithm, based on quantum-classical hybrid methods, provides … Read more
Basic Data Encryption: Secure Encryption Algorithms In today’s digital age, data security has become increasingly important. Whether it is personal information, business secrets, or other sensitive data, encryption is an effective means of protecting this information. In this article, we will introduce a basic data encryption method and provide specific code examples to help beginners … Read more