Symmetric Encryption Algorithms Symmetric encryption algorithms are a common method of encryption where the same key is used for both encryption and decryption. Common symmetric encryption algorithms include DES, 3DES, and AES. DES Algorithm: Data Encryption Standard, once widely used as a symmetric encryption algorithm, has a key length of 56 bits. In the early … Read more
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Introduction This article summarizes various common encryption algorithms and encoding algorithms used in web scraping, detailing their principles and basic implementation methods in JavaScript and Python. When encountering JS encryption, you can quickly restore the encryption process. Some websites may have additional processing during encryption, but the general methods are similar. Common encryption algorithms: Symmetric … Read more
1. Http HyperText Transfer Protocol, is the most widely used protocol on the Internet, a standard that all WWW files must follow. The data transmitted using the HTTP protocol is unencrypted, which means it is in plaintext, making it very insecure to transmit private information using the HTTP protocol. Uses TCP port: 80 2. Https … Read more
Variety is the spice of life. Change is the spice of life. 1. Introduction to HTTP and HTTPS HTTPS = HTTP + SSL Similarities In most cases, HTTP and HTTPS are the same because they both use the same underlying protocol. As an HTTP or HTTPS client—browser—establishes a connection to the web server on a … Read more
To clearly explain the implementation principles of the HTTPS protocol, we need to understand at least the following background knowledge. 1. A rough understanding of several basic terms (HTTPS, SSL, TLS) 2. A rough understanding of the relationship between HTTP and TCP (especially “short connection” vs. “long connection”) 3. A rough understanding of the concept … Read more
1. Why Use HTTPS Instead of HTTP 1.1 Differences Between HTTPS and HTTP 1) The HTTPS protocol requires a certificate application from a CA, and generally, free certificates are rare and often require payment. 2) HTTP is the Hypertext Transfer Protocol, where information is transmitted in plain text, while HTTPS is a secure SSL encrypted … Read more
Linux | Red Hat Certified | IT Technology | Operations Engineer 👇 Join the technical exchange QQ group of 1000 people, note 【Public Account】 for faster approval 1. What is HTTPS? HTTPS is HTTP that has been encrypted and decrypted. HTTPS is also an application layer protocol that introduces an encryption layer on top of … Read more
Before discussing HTTPS, let’s first talk about what HTTP is. HTTP is a protocol that we use when browsing the web. The data transmitted using the HTTP protocol is unencrypted, meaning it is in plain text, making it very insecure to transmit private information using HTTP. To ensure that this private data can be transmitted … Read more
The PLC programs in automation control systems often encapsulate years of technological accumulation and core algorithms of enterprises. As industrial competition intensifies, protecting PLC programs from illegal copying and theft has become an important issue in the field of industrial automation. This article introduces a Siemens PLC program encryption solution practically applied at the Aerospace … Read more