What is sev?

This is a software library that lets developers work with AMD SEV (Secure Encrypted Virtualization) on their computers. SEV is a security feature built into certain AMD processors that encrypts virtual machines so that even the computer's owner or cloud provider can't see what's running inside them. This library provides the tools needed to interact with that feature. In practical terms, if you're building a cloud service or system software and want to offer your users encrypted virtual machines as an extra layer of security, this library handles the low-level communication with the AMD processor to make that possible. Instead of writing that complex hardware interaction code yourself, you can use this pre-built library to manage encryption keys, verify secure environments, and control SEV features. The library is written in Rust and actively maintained, which means it's regularly updated and bugs get fixed promptly. It's designed for people building infrastructure software, cloud platforms, virtualization tools, or security-focused applications, rather than end users. For example, a company running a cloud service might use this to give customers the ability to run sensitive workloads in encrypted virtual machines where even the cloud provider's administrators can't access the data. The project is part of the broader Enarx initiative, which focuses on making confidential computing more accessible. If you're working on systems that need strong privacy guarantees and your hardware supports AMD SEV, this library would be a foundational building block for implementing that protection.