Introducing Nostringer - unlinkable ring signatures (SAG) for Nostr pubkeys.
Instead of doing some Ghibli stuff I implemented a prototype of unlinkable ring signatures for Nostr.
It's using Monero style Spontaneous Anonymous Group signatures (SAG).
What does it enable ?
Ring signatures allow multiple members of a group to sign a message without revealing which member actually signed it.
I explored this after chatting with nostr:nprofile1qqsydl97xpj74udw0qg5vkfyujyjxd3l706jd0t0w0turp93d0vvungpzpmhxue69uhkummnw3ezumt0d5hszythwden5te0dehhxarj9emkjmn99ujcnqad who wants to use this concept for WalletScrutiny. Basically his idea would be to let users write reviews as accredited wallet developers. Because of the competition between wallets it's better to not disclose who posted a review.
It would be sufficient to know that it was posted from someone belonging to a group of accredited developers.
Checkout the demo and repo in the links below.
Live demo: https://nostringer.starknetonbitcoin.com
Nostringer in Typescript was fun, but did it again in a serious language this time: nostringer-rs is born, a blazing fast unlinkable ring signature scheme, written in Rust 🦀
Try it with the cli: cargo install nostringer_cli && nostringer_cli demo
https://github.com/AbdelStark/nostringer-rs
That's very acceptable execution times I would guess. Are the ts execution times much higher?
Yes very acceptable!
I did not benchmark but I suspect the ts execution times would me much higher.
Btw I will add wasm compatibility for usage of the rust lib in browser and in JavaScript projects
