Christopher Allen ChristopherA

Best Practices for Automating macOS `/usr/bin/security` App in Shell Scripts

WARNING: I've only dabbled with this in some scripts, and am not an expert. This document is based on my explorations, and has not been reviewed as actual best practices. USE AT YOUR OWN RISK!*

Securely managing macOS keychain items from the command line requires careful handling of access controls, error paths, and credential lifecycles. This guide collects recommended patterns and links to official documentation.

1. Principle of Least Privilege

Whitelist only necessary binaries
When adding an item, use -T to restrict which executables can access it.

#	Pattern	Why It Matters	Template	Example Prompt
1	Lead with the ask	The model reads top-down; putting the goal first stops it wandering.	Do X... [context]...	"Summarise this PDF in 5 bullet points. The text is below:"
2	Repeat the key ask at the end	Long contexts sometimes truncate; an end-cap protects you.	[details]... REMEMBER: Do X.	"List pros & cons, keep it balanced. REMEMBER: 5 pros, 5 cons."
3	Specify output shape	Dictating format cuts revision loops.	Return a

My Work & Mission

#AboutChristopherA

I'm Christopher Allen, an Internet trust architect, entrepreneur, technologist, and advocate dedicated to supporting human dignity and personal autonomy free from coercion. My journey began with co-authoring the IETF TLS internet standard, the foundation of secure web commerce. Over the years, I've been privileged to contribute to the evolution of self-sovereign identity (SSI) and decentralized identity standards, including co-authoring the W3C Decentralized Identifier (DID) standard).

My career path includes roles such as Principal Architect at Blockstream, VP of Developer Relations at Blackphone, and CTO of Certicom. Currently, I lead Blockchain Commons, focusing on cryptographic security, open infrastructure, and ensuring that individuals—not corporations or governments—control their own digital destiny.

My approach to technology is deeply rooted in values that prioritize **human dignity, individual autonomy, an

`Open_Integrity_Problem_Statement.md`

Open Integrity: A Cryptographic Root of Trust for Git Repositories

(last updated 2024-02-18, Christopher Allen [email protected] Github/Twitter/Bluesky: @ChristopherA)

Introduction & Problem Statement

The Open Integrity project, an initiative of Blockchain Commons, demonstrates how Git repositories can serve as a cryptographic root of trust, ensuring integrity, provenance, and accountability in software development. By combining Git's native signing capabilities with structured cryptographic verification and auditing processes, this proof-of-concept creates tamper-resistant and independently verifiable software and data stores.

This approach enables:

Git Worktree Best Practices and Tools

Last Updated: 2024-02-06

Overview

Git worktrees allow you to check out multiple branches simultaneously in separate directories, while sharing a single .git metadata store.

THere are some best practices, useful Git aliases, and shell functions for efficiently managing Git worktrees. It covers:

Setting up Git aliases for worktree operations.
Using shell functions for enhanced worktree management.

MuSig2 Sequence Diagrams

ABSTRACT: This document provides sequence diagrams for the MuSig2 multisignature protocol, covering 2-of-2 multisig with direct peer-to-peer interaction and 3-of-3 multisig with a Coordinator. It integrates GSTP and ESC to ensure secure, trustless communication, offering a practical guide for implementing efficient, private, and secure multisig solutions.
MAIN BRANCH: The main branch of this diagram is now part of the Blockchain Commons Developer Website. Use the Gordian Developer Community Discussions if you have questions or use the [Issues](https://github.com/Blockchai

Unsorted

Links to Schnorr Opportunities

OVERVIEW: A hub of links exploring the potential of Schnorr signatures and related cryptographic innovations. It highlights their applications in enhancing efficiency, privacy, and functionality across blockchain systems, particularly Bitcoin, while also emphasizing broader implications for secure protocols, multisignature schemes, and decentralized technologies. These annotated links are to foundational articles, research, and discussions, offering insights into the transformative opportunities these Schnorr related opportunities present.

Tags: #schnorr #cryptography #mpc #multipartycomputation #frost [#musig](https://gist.github.

Web-Based Markdown Tools

Tags: #markdown #webservice #list #links #sorted #unannotated

	# Linux Keyboard Remapping on Legacy MacBooks

	> TO BE TESTED: on Ubuntu 22.04 LTS & Tails 5.x (with Dotfiles persistence).

	How to get a MacBook’s keyboard behaving correctly under Linux—and make those settings survive reboots (especially in Tails).

	## Debian/Ubuntu-based Distros

	1. Reconfigure the keyboard package