OpenSSL

Overview

OpenSSL is a robust, commercial-grade, full-featured open-source toolkit that implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols, as well as a full-strength general-purpose cryptography library.

Importance

• Powers HTTPS for millions of websites
• Essential for secure communications
• Used by countless applications and operating systems
• Critical for global internet security

Key Features

• SSL/TLS protocol implementation
• Cryptographic algorithms
• Certificate management
• FIPS 140-2 validation support

Security History

Following the Heartbleed vulnerability in 2014, the project received more attention and funding, but long-term sustainability remains a concern. The core team is very small.