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Show HN: I saw this cool navigation reveal, so I made a simple HTML+CSS version

https://github.com/Momciloo/fun-with-clip-path
2•momciloo•58m ago•0 comments

Show HN: Look Ma, No Linux: Shell, App Installer, Vi, Cc on ESP32-S3 / BreezyBox

https://github.com/valdanylchuk/breezydemo
270•isitcontent•21h ago•35 comments

Show HN: Stacky – certain block game clone

https://www.susmel.com/stacky/
3•Keyframe•1h ago•0 comments

Show HN: I spent 4 years building a UI design tool with only the features I use

https://vecti.com
365•vecti•23h ago•167 comments

Show HN: If you lose your memory, how to regain access to your computer?

https://eljojo.github.io/rememory/
342•eljojo•23h ago•211 comments

Show HN: Kappal – CLI to Run Docker Compose YML on Kubernetes for Local Dev

https://github.com/sandys/kappal
18•sandGorgon•2d ago•10 comments

Show HN: A toy compiler I built in high school (runs in browser)

https://vire-lang.web.app
2•xeouz•1h ago•1 comments

Show HN: R3forth, a ColorForth-inspired language with a tiny VM

https://github.com/phreda4/r3
81•phreda4•20h ago•15 comments

Show HN: Smooth CLI – Token-efficient browser for AI agents

https://docs.smooth.sh/cli/overview
94•antves•2d ago•70 comments

Show HN: Nginx-defender – realtime abuse blocking for Nginx

https://github.com/Anipaleja/nginx-defender
3•anipaleja•3h ago•0 comments

Show HN: Slack CLI for Agents

https://github.com/stablyai/agent-slack
52•nwparker•1d ago•11 comments

Show HN: BioTradingArena – Benchmark for LLMs to predict biotech stock movements

https://www.biotradingarena.com/hn
28•dchu17•1d ago•12 comments

Show HN: Artifact Keeper – Open-Source Artifactory/Nexus Alternative in Rust

https://github.com/artifact-keeper
154•bsgeraci•1d ago•64 comments

Show HN: Which chef knife steels are good? Data from 540 Reddit tread

https://new.knife.day/blog/reddit-steel-sentiment-analysis
2•p-s-v•1h ago•0 comments

Show HN: MCP App to play backgammon with your LLM

https://github.com/sam-mfb/backgammon-mcp
3•sam256•5h ago•1 comments

Show HN: ARM64 Android Dev Kit

https://github.com/denuoweb/ARM64-ADK
18•denuoweb•2d ago•2 comments

Show HN: I'm 75, building an OSS Virtual Protest Protocol for digital activism

https://github.com/voice-of-japan/Virtual-Protest-Protocol/blob/main/README.md
7•sakanakana00•6h ago•1 comments

Show HN: I built Divvy to split restaurant bills from a photo

https://divvyai.app/
3•pieterdy•6h ago•1 comments

Show HN: Gigacode – Use OpenCode's UI with Claude Code/Codex/Amp

https://github.com/rivet-dev/sandbox-agent/tree/main/gigacode
20•NathanFlurry•1d ago•9 comments

Show HN: XAPIs.dev – Twitter API Alternative at 90% Lower Cost

https://xapis.dev
3•nmfccodes•3h ago•1 comments

Show HN: I Hacked My Family's Meal Planning with an App

https://mealjar.app
2•melvinzammit•8h ago•0 comments

Show HN: I built a free UCP checker – see if AI agents can find your store

https://ucphub.ai/ucp-store-check/
2•vladeta•8h ago•2 comments

Show HN: Micropolis/SimCity Clone in Emacs Lisp

https://github.com/vkazanov/elcity
173•vkazanov•2d ago•49 comments

Show HN: Daily-updated database of malicious browser extensions

https://github.com/toborrm9/malicious_extension_sentry
14•toborrm9•1d ago•8 comments

Show HN: Falcon's Eye (isometric NetHack) running in the browser via WebAssembly

https://rahuljaguste.github.io/Nethack_Falcons_Eye/
6•rahuljaguste•20h ago•1 comments

Show HN: Compile-Time Vibe Coding

https://github.com/Michael-JB/vibecode
10•michaelchicory•10h ago•3 comments

Show HN: Horizons – OSS agent execution engine

https://github.com/synth-laboratories/Horizons
24•JoshPurtell•1d ago•5 comments

Show HN: Slop News – HN front page now, but it's all slop

https://dosaygo-studio.github.io/hn-front-page-2035/slop-news
18•keepamovin•11h ago•6 comments

Show HN: Local task classifier and dispatcher on RTX 3080

https://github.com/resilientworkflowsentinel/resilient-workflow-sentinel
25•Shubham_Amb•1d ago•2 comments

Show HN: Fitspire – a simple 5-minute workout app for busy people (iOS)

https://apps.apple.com/us/app/fitspire-5-minute-workout/id6758784938
2•devavinoth12•14h ago•0 comments
Open in hackernews

Show HN: 1-of-1 AES Encryption Objects (Not-Cross-Decryptable)

https://github.com/0north-eth/zero-north-vault/releases/tag/v1.0-demo
2•0north•2mo ago

Comments

0north•2mo ago
hey dudes i built this new thing, its basically singular offline encryption environments where you can encrypt words and text. It’s inspired by genesis blockchains but applied to the AES runtime key pairing to create cross decryptable cipher environments.

i can make infinite of them, and they're not cross-decryptable. so if you have one on a USB for example, its literally your own personal, private encryption language. theyre like little artifacts.

heres a video explanation i recorded in my kitchen: https://youtube.com/shorts/LfVV-gDmJKs?si=OVa31R09wN-EiYBJ

same password + same message in any two vaults = impossible to cross-decrypt

click the link in the title for the demo I have two demo vaults, bear with me on the huge size. they are that big because each one electron package bundles chromium, not because of my encryption logic. sorry about that.

the encryption environments work offline, and I store nothing, theyre deleted server side after my API delivers them. no cloud, no backup server, no seeds.

you can check out more details at my github at github.com/Onorth-eth if you wanna peep the actual post or the original devpost submission. (some of the terminology in my original video may be weird, its AES)

didn't post my actual API link to generate individual vaults because im pretty sure my digital ocean droplet would literally explode, but the 2 vaults in the demo can encrypt and decrypt anything you guys want; and you can see that they don't decrypt one-another.

if you want a personal one i can give some to the first commentors or whatever just comment 'encrypt pls or something and I can make you one.

tldr: 1-of-1 encryption vaults, like Minecraft seeds for personal encryption kinda. mess with my demos and sorry about the size.

why build it: journalists can encrypt sensitive data then delete their .exe, keep the encrypted output, and decrypt it all on their backup at home. people can keep a vault on a usb in a safety deposit box and encrypt data or messages for their family. lots of stuff.

if you like it: https://buymeacoffee.com/dantehorton

if you think its dumb/malware: its not, also tell me why i guess.

slooonz•2mo ago
I think you should clearly spell out how the key is derived.

From the description, I believe it's random string hard-coded in the executable + user-provided password => AES key ?

Also… "full offline", but "my API is on a digital ocean droplet" ? What ?

(I guess the API to generate a .exe with its own random string ? But again, very unclear of what it is, what’s it’s doing, and how)

0north•2mo ago
You’ve mostly got it.

The API on DigitalOcean just builds a fresh .exe and embeds a unique seed into the runtime build. After that, everything is offline.

The seed is made server-side during creation as a SHA-256 over a timestamp + jitter source, and is written as (vault-seed.txt)in the .zip.

Inside the .exe, the vault reads its own embedded seed. The KDF is thus:

key = SHA256(SHA256(password||seed))

Each encryption uses a fresh 16-byte IV and encodes ciphertexts as:

ivHex + "." + encryptedHex

So the text is encrypted and locked behind an AES key and an ivHex per click.

The result is simply: same password + different builds => different AES keys, because each .exe has a different seed baked into it.

That’s what creates the conditions where two environments can never decrypt each-other’s ciphertexts and can be generated endlessly.