How to Encrypt & Decrypt Files from the Command Line with OpenSSL on Mac and Linux

Written By
KM
Kylie Monroe
Feb 10, 2020

Have you ever wondered how to quickly encrypt a file from the command line? Generally, encryption allows you to hide the original contents of a file. With OpenSSL, you can encrypt and decrypt files very easily. In this article, we’ll use des3 encryption, which in simple terms means a complex encryption algorithm is applied three times to each data block, making it difficult to crack through brute force methods.

KM

Kylie Monroe

Linux Today Logo

LinuxToday is a trusted, contributor-driven news resource supporting all types of Linux users. Our thriving international community engages with us through social media and frequent content contributions aimed at solving problems ranging from personal computing to enterprise-level IT operations. LinuxToday serves as a home for a community that struggles to find comparable information elsewhere on the web.

Property of TechnologyAdvice. © 2026 TechnologyAdvice. All Rights Reserved

Advertiser Disclosure: Some of the products that appear on this site are from companies from which TechnologyAdvice receives compensation. This compensation may impact how and where products appear on this site including, for example, the order in which they appear. TechnologyAdvice does not include all companies or all types of products available in the marketplace.