Hush Line Crypto Modernization: A Whitepaper for Safer Disclosure Infrastructure
Hush Line exists for moments when a person needs to disclose sensitive information without being exposed by the tool that was supposed to protect them. That changes how crypto modernization has to be designed and described. The goal is not to chase new primitives for their own sake. The goal is to preserve the whistleblower's path to a trusted recipient while reducing the harm caused by database exposure, key-management mistakes, migration failure, or unclear security claims.
This whitepaper updates the May 28, 2026 crypto modernization paper. The original version correctly separated shipped work from planned work at that time, but it is now out of date. The current implementation completes the encrypted-field modernization scope: Hush Line has a production-capable AES-256-GCM encrypted-field envelope for new writes, a code-owned AAD contract, dual-read compatibility, schema readiness checks, migration tooling, rehearsal evidence, release gates, and test coverage.

