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@chromacrypt/pgc

v0.0.0-placeholder.0

Published

Privacy Glass Codec — namespace reservation; v0.1.0-alpha imminent (post-EPO filing). Hash-only predicate-commitment codec for database field values, with typed atoms and witness-cosigned schema registry.

Vulnerabilities

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Links

Git

Maintainers

chromacryptchromacrypt

Keywords

chromacryptpgcprivacy-glass-codeccryptographymerklepredicate-commitmentselective-disclosurehash-onlypost-quantumgdprplaceholder

Readme

@chromacrypt/pgc

Privacy Glass Codec — namespace reservation.

This is a placeholder. The functional release (v0.1.0-alpha) ships once the PGC patent application has been filed at the European Patent Office.

Status

| Field | Value | |---|---| | Version | 0.0.0-placeholder.0 | | Released | 2026-04-25 | | Functional release ETA | May 2026 (post EPO filing) | | Licence | Pre-release. All rights reserved. See LICENSE. | | Provenance | npm provenance attestations enabled (SLSA Build L3 from GitHub Actions) |

What it will be

A hash-only predicate-commitment codec for database field values, supporting five typed atoms:

  • SET — set membership
  • DFA — deterministic finite automaton acceptance (regex-class predicates)
  • RANGE — numeric interval membership
  • STRUCTURAL — schema-bounded validator conformance
  • RAW — unconstrained byte commitment

All atoms compose under a canonical TLV envelope, bound to a witness-cosigned schema fingerprint published in an append-only registry. Construction relies on SHA-256 + Merkle path operations only — no elliptic curves, no pairings, no SNARKs, no trusted setup.

The v0.1.0-alpha release ships SET + RAW atoms. The full five-atom v1.0.0 follows.

Why this exists today as a placeholder

Squatter risk. We're claiming the @chromacrypt scope on npm before someone else does. The functional code is being extracted from the reference implementation; once the patent files at the EPO, we ship.

Contact

Project home: https://chromacrypt.io

For early-access, partnership, or licensing enquiries, see the project home.