In May 2017, the WannaCry ransomware virus broke out globally, with some university students in mainland China reporting that their computers were attacked by the virus and documents were maliciously encrypted. The ransomware wreaked havoc, resembling a global internet disaster, causing significant losses to computer users. According to the latest statistics, over 100 countries and … Read more
Click the blue text Follow us The Birth of Asymmetric Encryption Tree Brother: Cryptography can be simply divided into classical cryptography and modern cryptography. We have already introduced substitution ciphers and the Enigma machine in classical cryptography, and now we will begin to discuss symmetric and asymmetric encryption methods in modern cryptography. I’m sure you … Read more
1. Introduction The internet is filled with eavesdropping, and our information can easily be obtained by malicious individuals, causing us negative impacts. If you need to transmit confidential or sensitive personal information over the internet, you may need to encrypt it to guard against prying eyes. Using online or mobile encryption software may also expose … Read more
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
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
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
With cybercrime being so rampant, what should you do if your data is seen or even stolen by others? Data encryption is a common and effective security method and is the first choice for protecting enterprise data. But how do you encrypt data? Do you know what technologies are involved? Today, we will learn about … Read more
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
A prime number is also called a prime, which refers to a natural number greater than 1 that has no other factors apart from 1 and itself. If a natural number can be expressed as the product of two prime numbers, that natural number is called a semiprime (also known as a biprime or a … Read more
1. MD5 Encryption MD5 encryption characteristics: irreversible operation (cannot be cracked, cannot be decrypted) The result of encrypting different data is a fixed-length 32-character string (no matter how large the file is, it remains the same). The result of encrypting the same data is the same (that is, it is copied). Resistance to modification: the … Read more