https://github.com/techeng322/eth-ecies

Ethereum ECIES library, for easy encryption using Ethereum keys
https://github.com/techeng322/eth-ecies

Last synced: 18 days ago
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Ethereum ECIES library, for easy encryption using Ethereum keys

• Host: GitHub
• URL: https://github.com/techeng322/eth-ecies
• Owner: techeng322
• Created: 2023-11-08T19:54:26.000Z (about 1 year ago)
• Default Branch: master
• Last Pushed: 2023-11-17T15:58:18.000Z (about 1 year ago)
• Last Synced: 2024-01-15T10:34:57.930Z (about 1 year ago)
• Language: JavaScript
• Homepage: https://www.npmjs.com/package/eth-ecies
• Size: 36.1 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
eth-ecies

---

ECIES encrypt/decrypt library for Ethereum

# Usage

## Encrypt

```javascript

const ecies = require("eth-ecies");

let plaintext = new Buffer(`{foo:"bar",baz:42}`);

let encryptedMsg = ecies.encrypt(ethPubKey, plaintext);

// encrypted message is a 113+ byte buffer

```

## Decrypt

```javascript

const ecies = require("eth-ecies");

let plaintext = ecies.decrypt(ethPrivKey, encryptedMsg);

```

# Notes

To derive the public key from a private key, you can use `ethereumjs-util` module

# Security

The ECIES implementation uses **fixed Diffie-Hellman** (*ephemeral-static*) key exchange and provides no *Perfect Forward Secrecy (PFS)*. AES-256-CBC HMAC-SHA256 is used as AEAD algorithm.