SeedCrypt

This is a simple application to encrypt and decrypt a BIP39 seed phrase using a key. It uses the BIP39 wordlist for autocompletion during input.

TODO:

• domains: seedcrypt.app and https://seedcrypt.io
• extract encrypt and decrypt functions to npm library
• add docs
• github actions for sls deploy
• add pages with information to the app + SEO
• styles?

Proof of transparency

• Network tab in browser: there are no requests to server after the initial load
• src/utils/crypto.ts - encrypt and decrypt functions: simple algorithm based on modified Caesar cipher. passwordToBIP - be careful with encoding
• src/App.tsx - 2 input fields for seed phrase and key with SeedPhraseInput component, 2 buttons for encryption and decryption, 1 output field for result
• src/components/SeedPhraseInput.tsx - input field with autocomplete based on BIP39 wordlist

Usage

Run locally

git clone https://github.com/seedcrypt/seedcrypt.git
cd seedcrypt

NPM

npm install
npm run start

Yarn

yarn
yarn start

Deployment to AWS Serverless:

Without API Gateway/Custom domains/...

cp .env.example .env - sets PUBLIC_URL=/prod for default AWS adresses

yarn build && npx sls deploy

With API Gateway/ACM/Custom domains/Hosted zones/...

1. yarn build && npx sls deploy
2. Create domain at Route 53 -> Hosted zones
3. Set DNS for domain
4. Create certificate at ACM
5. Add records
6. API Gateway -> Custom domains -> Create -> Regional ->...
7. Hosted zones -> domain -> Wizard -> alias for API Gateway -> Domain