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 is used as AEAD algorithm.