https://github.com/hannesm/conex

establish trust in community repositories, cryptographically signed by library authors
https://github.com/hannesm/conex

conex cryptography ocaml opam package-manager trust

Last synced: about 2 months ago
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establish trust in community repositories, cryptographically signed by library authors

• Host: GitHub
• URL: https://github.com/hannesm/conex
• Owner: hannesm
• License: other
• Created: 2015-11-08T22:48:42.000Z (about 9 years ago)
• Default Branch: main
• Last Pushed: 2024-10-14T08:17:35.000Z (3 months ago)
• Last Synced: 2024-10-29T20:12:53.297Z (2 months ago)
• Topics: conex, cryptography, ocaml, opam, package-manager, trust
• Language: OCaml
• Homepage:
• Size: 1.43 MB
• Stars: 34
• Watchers: 11
• Forks: 2
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGES.md
  • License: LICENSE.md

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README

        
## Conex - establish trust in community repositories

%%VERSION%%

Conex is a utility for verify and attest release integrity and authenticity of community repositories through the use of cryptographic signatures (RSA-PSS-SHA256). It is based on [the update framework](https://theupdateframework.github.io/), especially on their [CCS 2010 paper](https://isis.poly.edu/~jcappos/papers/samuel_tuf_ccs_2010.pdf), and adapted to the requirements of the [opam](https://ocaml.opam.org) [repository](https://github.com/ocaml/opam-repository).

The developer sign their release checksums and build instructions.  A quorum (with a configurable threshold) of repository maintainers signs the package name to developer key relation.  These repository maintainers are enrolled by a quorum of offline root keys.

The [TUF spec](https://github.com/theupdateframework/specification/blob/master/tuf-spec.md) has a good overview of attacks and threat model, both of which are shared by conex.

## Project history

Spring 2017, together with Justin Cappos [TAP 8](https://github.com/theupdateframework/taps/blob/master/tap8.md) was designed which extends TUF with key rotation and explicit self-revocation.

Early 2017, a [blog post](https://hannes.robur.coop/Posts/Conex) introducing a prototype was published.

We presented [an earlier design at OCaml 2016](https://github.com/hannesm/conex-paper/raw/master/paper.pdf) about an earlier design.

Another article on an [even earlier design (from 2015)](http://opam.ocaml.org/blog/Signing-the-opam-repository/) is also available.

## Installation

Conex release tarballs are accompanied with OpenPGP signatures in a separate .sig file in the download area.

`opam instal conex` will install this library and tool,

once you have installed OCaml (>= 4.13.0) and opam (>= 2.0.0beta).

A small test repository with two maintainers is available [here](https://github.com/hannesm/testrepo) including transcripts of how it was setup, and how to setup opams `repo validation hook`.