Coze – cryptographic JSON messaging specification
Coze is open source under the BSD 3 license, and the reference implementation is written in Go. You can play with Coze using the online tool (https://cyphr.me/coze). There is also the simple tool (https://cyphr.me/coze_verifier_simple/coze.html). This is an example coze: { "pay": { "msg": "Coze Rocks", "alg": "ES256", "iat": 1623132000, "tmb": "cLj8vsYtMBwYkzoFVZHBZo6SNL8wSdCIjCKAwXNuhOk", "typ": "cyphr.me/msg" }, "sig": "Jl8Kt4nznAf0LGgO5yn_9HkGdY3ulvjg-NyRGzlmJzhncbTkFFn9jrwIwGoRAQYhjc88wmwFNH5u_rO56USo_w" } Coze also defines a key format allowing…
What it does
In the maker’s words, at launch
Coze is open source under the BSD 3 license, and the reference implementation is written in Go. You can play with Coze using the online tool (https://cyphr.me/coze). There is also the simple tool (https://cyphr.me/coze_verifier_simple/coze.html). This is an example coze: { "pay": { "msg": "Coze Rocks", "alg": "ES256", "iat": 1623132000, "tmb": "cLj8vsYtMBwYkzoFVZHBZo6SNL8wSdCIjCKAwXNuhOk", "typ": "cyphr.me/msg" }, "sig": "Jl8Kt4nznAf0LGgO5yn_9HkGdY3ulvjg-NyRGzlmJzhncbTkFFn9jrwIwGoRAQYhjc88wmwFNH5u_rO56USo_w" } Coze also defines a key format allowing cryptographic keys to be represented completely in JSON: { "alg":"ES256", "iat":1623132000, "kid":"Zami's Majuscule Key.", "tmb":"cLj8vsYtMBwYkzoFVZHBZo6SNL8wSdCIjCKAwXNuhOk", "x":"2nTOaFVm2QLxmUO_SjgyscVHBtvHEfo2rq65MvgNRjORojq39Haq9rXNxvXxwba_Xj0F5vZibJR3isBdOWbo5g" } We've also published a Javascript implementation of Coze and a CLI library. https://github.com/Cyphrme/CozeJS https://github.com/Cyphrme/CozeCLI We hope you enjoy! # What is Coze useful for? Coze can be used for anything needing cryptographic signing, such as IoT, authentication, sessions, and cookies. As a timely example, reddit.com/u/spez, the CEO of Reddit, edited people's comments on Reddit. (https://www.theverge.com/2016/11/23/13739026/reddit-ceo-stev...) Coze stops that as cozies are impossible to edit by third parties.
Does the same job
all alternatives →
- ANA new language for COBOL workloads, built on GoNov 2025 · github.com · ▲5
We’re building an open-source language layer on top of Go, designed specifically for COBOL-style workloads: Native decimal arithmetic (COBOL-accurate) Record structures and copybook compatibility Batch jobs and transactional orchestration as first-class constructs Sequential / indexed file I/O baked into the runtime Compiles through Go for speed, concurrency, and cloud deployability Think of it as Kotlin for COBOL, or “COBOL on Go” familiar to mainframe engineers, powerful for modern developers. Test Results so far: NIST COBOL-85 validation: 77.61% overall (305/393 tests) NC…
- CIC# implementation of Keyczar encryption framework2013 · ▲5
I've been working on a C# implementation of Keyczar or months now. You can find it on github. http://jbtule.github.com/keyczar-dotnet/ It's feature complete, I've done a lot of unit tests, have about 90% code coverage, run various freely available static analysis, built it on linux and windows, but what I've really lacked is another person to actually look at the code. It's easy to make crypto mistakes, even when you know the common mistakes yourself. So I'd appreciate any comments, code reviews, thoughts, and issues. Thanks!
- PZPandora – Zero config key-value database services2020 · ▲13
Hi everyone! So a couple of weeks ago I was building a chrome extension for crawling data and uploading it somewhere online for further exploration. I found myself struggling a lot with this as I found every solution I tried hard to implement (Firebase, Mongo Atlas, EC2). I mean I only needed a simple endpoint in which I was able to set and get JSON data with some key. In the end I made a small CRUD using Mongo, Sinatra, Puma, and Nginx. Then Chrome complained that my endpoint (raw IP) was not HTTPS so I bought a cheap domain and configured an SSL certificate into my server. I found this to…
- FAfmsg – An open distributed messaging protocolApr 2026 · markmnl.github.io · ▲5
fmsg is a message definition and protocol intended as an alternative to email and IM apps. Like email it's distributed – anyone can host a server for their domain. Unlike email, messages are binary, verifiable by all peers, and linked into a DAG using cryptographic hashes. Sender verification and message integrity are built into the protocol, so you get what email needs SPF/DKIM/DMARC for out of the box. The host implementation (fmsgd) is written in Go. There's a Docker compose setup to get a full stack running in minutes: https://github.com/markmnl/fmsg-docker…
More dev tools this month
the category →
Open-source GTM skills for technical founders
Dev tools · 29d ago · gtmcofounder.com
OpenTrailPaper is open-source bike computer firmware for the LilyGO T5S3 4.7" E-Paper PRO. It supports offline maps, GPX routes, FIT recording and Bluetooth sensors.
Dev tools · 1d ago · opentrailpaper.com
Launched alongside, July 2023
the whole month →
- WL
Hey everyone, I here is a small open-source project I've been working on lately. I'd love to hear your thoughts and improvement ideas :) GitHub: [github.com/Vincenius/workout-lol](https://github.com/Vincenius/workout-lol)
Dev tools · 2023 · workout.lol
- HN
I saw this [0] pretty cool thread by user revskill, and wanted a quicker way to search through it, but also to keep them all in one place so I can read them at my leisure whenever I get time. Right now is like 60 lines of Ruby using Nokogiri, but I will certainly look into it further down the line and improve the list. There's a cronjob checking the thread every 12 hours but I will eventually shut that down and it will become static after that. There are some really awesome blogs in there. I really recommend going through the list, it made my day. [0] "Could you share your personal blog…
Life & fun · 2023 · dm.hn
A safe space for your thoughts, private, local, p2p & open
Commerce · 2023 · anytype.io
