openssl

File security is a fundamental concern for individuals and businesses alike. As data breaches become more frequent, encrypting sensitive information becomes critical. One of the tools available for Linux users is OpenSSL, a powerful toolkit for the Transport Layer Security (TLS) and Secure Sockets Layer (SSL) protocols. In this blog, we explore how to symmetrically encrypt and decrypt files using OpenSSL with the aes-256-cbc cipher and the pbkdf2 option. Q1: What is symmetric encryption? A1: Symmetric encryption is a type of encryption where the same key is used for both encryption and decryption. It's effective for securing data as long as the key remains private and shared only among authorized users.

Today, we'll uncover how to generate a Time-based One-Time Password (TOTP) straight from your Linux terminal using openssl and date +%s. This guide is aimed at enhancing your understanding of cybersecurity measures like two-factor authentication (2FA) while providing a practical example using common Linux tools. Q&A on Generating a TOTP Token in Bash A1. A Time-based One-Time Password (TOTP) token is a temporary passcode used in two-factor authentication systems. It combines something the user knows (a secret key) with something the user has (typically, a time source) to produce a password that changes every 30 seconds. Q2. Why use openssl and date +%s in Bash for generating a TOTP token? A2.

When managing web servers or securing any server communication, SSL/TLS certificates play a crucial role in ensuring data is encrypted and exchanged over a secure channel. While verified certificates from trusted authorities are ideal, self-signed certificates can be highly useful for testing, private internets, or specific internal services. Here, we'll look into how to generate them quickly using the OpenSSL utility in Linux. openssl req -x509 -newkey rsa:4096 -keyout key.pem -out cert.pem -days 365 -nodes -subj "/C=US/ST=New York/L=New York/O=YourOrganization/OU=YourUnit/CN=yourdomain.example.com" Explanation of the command parameters: req: This command specifies that a X.509 certificate signing request (CSR) is being created.

Encryption and Decryption Techniques Using OpenSSL in Bash Scripts In the realm of Linux server management and data protection, encryption is a crucial technique for securing data. OpenSSL, a robust, commercial-grade, full-featured, and open-source toolkit implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols. It also provides a rich set of tools for encryption and decryption of data. In this blog, we'll explore how you can use OpenSSL in Bash scripts to encrypt and decrypt data effectively. Before diving into the scripting aspect, ensure that you have OpenSSL installed on your Linux system.