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Gordian Seed Tool

Gordian Seed Tool Cryptographic Seed Manager for iOS

by Wolf McNally and Christopher Allen

Gordian Seed Tool protects your cryptographic seeds while also making them available for easy use. Using Seed Tool, you can generate seeds and store them securely on your device. You can then derive and share multi-signature signing and verification keys from those seeds. Sophisticated backup procedures include printed pages and Sharded Secret Key Reconstruction (SSKR) — which lets you split your seed into pieces and send them to trusted parties, who can send them back to you in an emergency for seed recovery. You can even use an entirely offline device (no internet access) to store your seeds and use QR codes to exchange necessary information with online devices running compatible wallet or signing software.

<img src="images/gg-list.jpg" width=200 align="center">  <img src="images/gg-addseed.jpg" width=200 align="center">  <img src="images/gg-adddie.jpg" width=200 align="center">  <img src="images/gg-seed.jpg" width=200 align="center">

Demos (Videos)

Installation Instructions

Gordian Seed Tool is available from the Apple Appstore for the iPhone, or can be compiled from source here.

To compile from source, simply choose "Code > Open with Xcode" from the top of the repo. This will download the code into Xcode, including all of the dependencies. After you will be able to Run (command-R) it for your Mac or a connected iOS device.

Usage Instructions

Gordian Principles

Gordian Seed Tool is a reference implementation meant to display the Gordian Principles, which are philosophical and technical underpinnings to Blockchain Commons' Gordian technology. This includes:

Blockchain Commons apps do not phone home and do not run ads. Some are available through various app stores; all are available in our code repositories for your usage.

For related Threat Modeling, see the Seed Tool Manual.

Status - Released (1.6)

Gordian Seed Tool has been released through the Apple Appstore.

Version History

Join the Test Flight Open Beta

1.6.2 (80)

1.6.1 (79)

1.6 (78)

1.6 (77)

1.6 (76)

1.6 (75)

1.6 (74)

1.6 (73)

1.6 (72)

1.6 (71)

1.6 (70)

1.6 (69)

1.6 (68)

1.6 (67)

1.6 (66)

1.6 (65)

Interim release.

1.6 (64)

Interim release (iOS only).

1.6 (63)

Interim release.

1.6 (62)

1.6 (61)

1.6 (60)

Summary of changes in version 1.5 (May 11, 2022)

NFC Improvements (Experimental!)

SSKR Improvements

General bug fixes and improvements.

Summary of changes in version 1.4 (April 6, 2022)

I/O Improvements

New Data Details

Other Updates & Fixes

1.4 (56)

1.4 (55)

1.4 (54)

See Version History for previous builds.

Origin, Authors, Copyright & Licenses

Unless otherwise noted (either in this /README.md or in the file's header comments) the contents of this repository are Copyright © 2024 by Blockchain Commons, LLC, and are licensed under the spdx:BSD-2-Clause Plus Patent License.

In most cases, the authors, copyright, and license for each file reside in header comments in the source code. When it does not, we have attempted to attribute it accurately in the table below.

This table below also establishes provenance (repository of origin, permalink, and commit id) for files included from repositories that are outside of this repo. Contributors to these files are listed in the commit history for each repository, first with changes found in the commit history of this repo, then in changes in the commit history of their repo of their origin.

FileFromCommitAuthors & Copyright (c)License
exception-to-the-rule.c or exception-folderhttps://github.com/community/repo-name/PERMALINKhttps://github.com/community/repo-name/commit/COMMITHASH2020 Exception AuthorMIT

Dependencies

To build Gordian Seed Tool you'll need to use the following tools:

Derived from....

Gordian Seed Tool incorporates:

Related to...

Blockchain Commons has two other seedtools:

We also have other related projects:

Financial Support

Gordian Seed Tool is a project of Blockchain Commons. We are proudly a "not-for-profit" social benefit corporation committed to open source & open development. Our work is funded entirely by donations and collaborative partnerships with people like you. Every contribution will be spent on building open tools, technologies, and techniques that sustain and advance blockchain and internet security infrastructure and promote an open web.

To financially support further development of Gordian Seed Tool and other projects, please consider becoming a Patron of Blockchain Commons through ongoing monthly patronage as a GitHub Sponsor. You can also support Blockchain Commons with bitcoins at our BTCPay Server.

Contributing

We encourage public contributions through issues and pull requests! Please review CONTRIBUTING.md for details on our development process. All contributions to this repository require a GPG signed Contributor License Agreement.

Discussions

The best place to talk about Blockchain Commons and its projects is in our GitHub Discussions areas.

Gordian Developer Community. For standards and open-source developers who want to talk about interoperable wallet specifications, please use the Discussions area of the Gordian Developer Community repo. This is where you talk about Gordian specifications such as Gordian Envelope, bc-shamir, Sharded Secret Key Reconstruction, and bc-ur as well as the larger Gordian Architecture, its Principles of independence, privacy, resilience, and openness, and its macro-architectural ideas such as functional partition (including airgapping, the original name of this community).

Gordian User Community. For users of the Gordian reference apps, including Gordian Coordinator, Gordian Seed Tool, Gordian Server, Gordian Wallet, and SpotBit as well as our whole series of CLI apps. This is a place to talk about bug reports and feature requests as well as to explore how our reference apps embody the Gordian Principles.

Blockchain Commons Discussions. For developers, interns, and patrons of Blockchain Commons, please use the discussions area of the Community repo to talk about general Blockchain Commons issues, the intern program, or topics other than those covered by the Gordian Developer Community or the Gordian User Community.

Other Questions & Problems

As an open-source, open-development community, Blockchain Commons does not have the resources to provide direct support of our projects. Please consider the discussions area as a locale where you might get answers to questions. Alternatively, please use this repository's issues feature. Unfortunately, we can not make any promises on response time.

If your company requires support to use our projects, please feel free to contact us directly about options. We may be able to offer you a contract for support from one of our contributors, or we might be able to point you to another entity who can offer the contractual support that you need.

Credits

The following people directly contributed to this repository. You can add your name here by getting involved. The first step is learning how to contribute from our CONTRIBUTING.md documentation.

NameRoleGithubEmailGPG Fingerprint
Christopher AllenPrincipal Architect@ChristopherA<ChristopherA@LifeWithAlacrity.com>FDFE 14A5 4ECB 30FC 5D22 74EF F8D3 6C91 3574 05ED
Wolf McNallyProject Lead@WolfMcNally<Wolf@WolfMcNally.com>9436 52EE 3844 1760 C3DC  3536 4B6C 2FCF 8947 80AE

Responsible Disclosure

We want to keep all of our software safe for everyone. If you have discovered a security vulnerability, we appreciate your help in disclosing it to us in a responsible manner. We are unfortunately not able to offer bug bounties at this time.

We do ask that you offer us good faith and use best efforts not to leak information or harm any user, their data, or our developer community. Please give us a reasonable amount of time to fix the issue before you publish it. Do not defraud our users or us in the process of discovery. We promise not to bring legal action against researchers who point out a problem provided they do their best to follow the these guidelines.

Reporting a Vulnerability

Please report suspected security vulnerabilities in private via email to ChristopherA@BlockchainCommons.com (do not use this email for support). Please do NOT create publicly viewable issues for suspected security vulnerabilities.

The following keys may be used to communicate sensitive information to developers:

NameFingerprint
Christopher AllenFDFE 14A5 4ECB 30FC 5D22 74EF F8D3 6C91 3574 05ED

You can import a key by running the following command with that individual’s fingerprint: gpg --recv-keys "<fingerprint>" Ensure that you put quotes around fingerprints that contain spaces.