Asymmetric Cryptography

Detailed Explanation of Symmetric Cryptographic Algorithms: The Evolution of Encryption from DES to AES

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Detailed Explanation of Symmetric Cryptographic Algorithms: The Evolution of Encryption from DES to AES

In the two main branches of cryptography, symmetric cryptographic algorithms have become the core tool for data encryption due to their efficiency. From the early DES to the current AES, symmetric cryptography has played an irreplaceable role in fields such as financial transactions, data storage, and network communication. This article will systematically analyze the core … Read more

Understanding The Technical Foundations Of Privacy Computing

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Understanding The Technical Foundations Of Privacy Computing

“IT Chat” is a professional information and service platform under the Machinery Industry Press, dedicated to helping readers master more professional and practical knowledge and skills in the broad field of IT, quickly enhancing workplace competitiveness. Click on the blue WeChat name to follow us quickly. Secure Multi-Party Computation Before discussing secure multi-party computation (hereafter … Read more

Public Key Encryption Based on Large Prime Numbers – RSA Algorithm

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Public Key Encryption Based on Large Prime Numbers - RSA Algorithm

Follow Encounter Mathematics, and discover a more wonderful you Image from: https://slideplayer.com/slide/5369780 The following text is excerpted from “Mathematics Kaleidoscope 2”, with permission from People’s Post and Telecommunications Press, [Encounter Mathematics] expresses gratitude! Modular arithmetic has led to an important development in cryptography: public key encryption. All cryptography relies on keys, and the greatest risk … Read more

Understanding RSA Algorithm Principles (Part 2)

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Understanding RSA Algorithm Principles (Part 2)

Last time, the author introduced some number theory knowledge. With this knowledge, we can understand the RSA algorithm. This is currently the most important encryption algorithm on Earth. 6. Steps for Key Generation We will understand the RSA algorithm through an example. Suppose Alice wants to communicate securely with Bob, how should she generate her … Read more

Course Notes: Theory and Basics of Homomorphic Encryption

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Course Notes: Theory and Basics of Homomorphic Encryption

Abstract:This article is the course notes from Professor Yu Yu’s summer class on homomorphic encryption. Professor Yu is a professor in the Department of Computer Science and Engineering at Shanghai Jiao Tong University, mainly engaged in research related to cryptography. The course first introduces some basic concepts of cryptography, and then discusses some fundamental theories … Read more

Understanding Asymmetric Cryptography Algorithms

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Understanding Asymmetric Cryptography Algorithms

Classical cryptography primarily aims to encrypt information, ensuring the confidentiality of the data, with its secret attributes generally based on the proprietary nature of the encryption methods.This indicates that its service target must be a small group, as widespread promotion makes it difficult to ensure the encryption methods are not leaked, and its update cycle … Read more

Symmetric Encryption Algorithms Explained

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Symmetric Encryption Algorithms Explained

5Typical Symmetric Encryption Algorithms This article introduces AES, SM4, and ZUC as representatives. AES, the Advanced Encryption Standard, is a block cipher algorithm adopted by the United States federal government; SM4 is a commercial block cipher algorithm developed and promoted for use in China; ZUC, the Zu Chongzhi algorithm, is a stream cipher algorithm independently … Read more

Cryptography: Understanding the Mysteries of Codes

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Cryptography: Understanding the Mysteries of Codes

Of course, this behavior is very unethical, hiding behind a screen and trampling on education and law at will. However, the relevant departments have also taken timely measures to prevent such incidents from occurring frequently. Back to the point, if an intruder directly cracks passwords through technical means to disrupt classes, does this “password” have … Read more

Step-by-Step Analysis of RSA Public Key, Private Key, and Digital Signature Encryption Process

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Step-by-Step Analysis of RSA Public Key, Private Key, and Digital Signature Encryption Process

Written by: Jiu Ge In 1977, three mathematicians Rivest, Shamir, and Adleman proposed a new asymmetric encryption algorithm, named after themselves, known as the RSA encryption algorithm. The knowledge of RSA involves advanced mathematics such as number theory and Euler’s function. If you do not have a background in higher mathematics, it is recommended not … Read more