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Building a Security-First OS from Scratch: AtomicOS Journey
- AtomicOS is a security-first operating system that implements AES-128 encryption, SHA-256 hashing, and a deterministic programming language known as Tempo.
- The OS prioritizes security over stability and performance, sacrificing speed for enhanced security measures.
- Key technical achievements include implementing real cryptography like AES encryption, utilizing a Memory Management Unit (MMU) with protection features, and introducing Tempo, a deterministic programming language.
- The kernel of AtomicOS went through various versions with a focus on security, introducing features like stack protection, memory safety measures, and access control.
- Security features implemented in AtomicOS include stack canaries for buffer overflow detection, bounds checking, memory safety measures like guard pages and secure wiping, and access control for operations.
- To test AtomicOS, users can run it themselves by cloning the repository, building the OS, and running it in QEMU.
- Lessons learned during the development process include the cost of security, the importance of starting with the basics, utilizing hardware for protection, and being honest about the project's capabilities.
- Future plans for AtomicOS include implementing privilege separation, expanding Tempo with a standard library, developing a network stack with security in mind, and creating an encrypted file system.
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