Prison Blues

PRISON BLUES turns one of the world's most ordinary developer tools into something unexpected: a covert, end-to-end encrypted message channel that looks like routine code collaboration.
Inside the Spot-On encryption suite, Prison Blues treats a Git repository as an asynchronous message bus. Messages become encrypted files. "Sending" becomes committing and pushing. "Receiving" becomes pulling and decrypting. The result is a resilient, store-and-forward communication method designed for environments where conventional messengers are blocked, monitored, or simply too risky - yet Git traffic still passes as normal.
This manuscript is an accessible deep dive into how the idea works, why it's useful, and where its edges are. It doesn't romanticize "stealth"; it confronts the real operational realities of Git-based transport - metadata leakage, timing signals, server availability, and the practical constraints of platforms and tooling. If you care about censorship resistance, secure collaboration, and threat modeling beyond the ciphertext, Prison Blues offers a blueprint for thinking clearly about all three.
You'll explore:
Git-as-transport architecture (commit / push / pull as messaging primitives)
Defense-in-depth encryption (Spot-On plus optional GPG workflows)
Security trade-offs: auditability vs. exposure, persistence vs. deniability
Real-world use cases: "digital dead drops," private bulletin boards, and restrictive networks
"When all else is watched, try Git."