In Linux systems, file encryption is an important means of ensuring data security. Whether for local storage or remote transmission, a reasonable encryption strategy can effectively prevent the leakage of sensitive information. This article will detail file encryption methods on Linux based on OpenSSL 3.5, covering scenarios such as file packaging encryption, single file encryption, … Read more
As a globally popularMySQL database, it has witnessed the growth ofMySQL from version3.x to the current8.x. The issue known as the2038 problem withMySQL has been resolved since version8.0.28. Recently, I downloaded the latest8.4.2 version and compiled it from source on the minimal Feiteng platform with ARM architecture, documenting some issues encountered during the process. 1.WARN_MISSING_SYSTEM_TIRPC … Read more
Click the blue text above to follow us 01. SSH Official Website and Download Links >>> The official download link for OpenSSL is as follows. This is the open-source organization that Luo Yonghao donated 1 million to. https://www.openssl.org/source/ The GitHub download link for OpenSSL is as follows. https://github.com/openssl/openssl The official website for the SSH open-source … Read more
Blockchain technology has garnered significant attention in recent years, with its core focus on data security and immutability. In blockchain, hash functions and encryption algorithms play crucial roles. This article will introduce how to implement basic hashing and encryption functions in C language to help beginners understand these concepts. 1. Introduction to Hash Functions A … Read more
Complete Ansible Playbook (<span>upgrade_openssh_openssl.yml</span>) yaml —- name: Upgrade OpenSSH and OpenSSL to fix vulnerabilities hosts: all become: yes serial: 1 # Operate on one host at a time to reduce risk vars: # Target versions (modify according to actual needs) target_openssh_version: "8.9p1" target_openssl_version: "3.0.11" # Fallback versions (for emergency recovery) fallback_openssh_version: "8.4p1" fallback_openssl_version: "1.1.1w" tasks: … Read more
01 Modular Build System: The Yocto Project uses the BitBake build tool, allowing developers to easily add, remove, or modify packages, including Qt SDK and OpenSSL. Flexibility and Customizability: Developers can highly customize the system according to project requirements, supporting various hardware architectures and operating system configurations, ensuring that components like Qt and OpenSSL are … Read more
The following is a classification and organization of vulnerabilities in the HTTP/HTTPS protocols based on the perspectives of black box testing、white box testing and gray box testing: 1. Black Box Testing (External Perspective, No Internal Access) Definition: Simulates the attacker’s perspective, testing only through external network interfaces without relying on internal system code or configuration … Read more
In 2014, the open-source library OpenSSL, which supports secure transport layer protocols, revealed a shocking vulnerability in its TLS/DTLS Heartbeat extension, which contained a buffer overflow vulnerability. This is the infamous Heartbleed vulnerability. This vulnerability allowed attackers to obtain encrypted data and steal the keys used for encryption. Since OpenSSL is one of the foundational … Read more
National encryption refers to the domestic encryption algorithms recognized by the National Cryptography Administration. The main algorithms include SM1, SM2, SM3, SM4, and the latest SM9. These algorithms are primarily used in domestic environments as recognized by the National Cryptography Administration. SM2 Algorithm: The SM2 elliptic curve public key cryptography algorithm is a public key … Read more
What Are Encryption and Decryption? Why Do We Need Them? How Does C++ Play a Role? In today’s information age, data security has become a core issue of concern across various industries. Encryption and decryption technologies, as crucial means of protecting data privacy, are ubiquitous. Whether in online payments, social media, or internal corporate communications, … Read more
