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Nygma

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Use at your own risk!

Demo

Introduction

This iOS/Android app will allow you to make a distributed and redundant backup of your nostr private key.

How it works

Backup

  • Enter your nostr private key (nsec...), the app fetches your nostr contacts.
  • Choose as many contacts as you want (mininum of 2). For example: select 7 contacts.
  • Click backup, now your private key is split in 7 pieces (using Shamir's Secret Sharing)
  • On the next page, you must indicate how many of the pieces are needed to reconstruct your full private key. For example: 3.
  • The app sends an encrypted DM to your 7 nostr contacts, each receive a piece of your private key

Recovery

  • Ask your 7 contacts for the piece they received.
  • Tell the app how many pieces you received from your contacts, for example 4. If you have less than the minimum you indicated during backup, the recovery will fail.
  • Enter the pieces (for example: 4)
  • The private key is recontsructed, the app logs you in with the private key and shows your list of contacts.
  • Swipe right to see you profile, where you have the ability to copy your private key.

Getting Started

Download the latest apk from the github Releases page and install on your Android device! iOS version is coming soon (tm)