Secp256k1 to PEM format

A simple library for converting EVM wallet keys to PEM format. The goal of this project is to convert the ECDSA (EC K256 - secp256k1) private keys into a PAM format that YubiHSM can import. The library works with private keys, extended keys, seeds, and mnemonic phrases.

Install:

• npm -i secp256k1-pem.

Import into your project:

• Typescript: import { Secp256k1PEM } from 'secp256k1-pem';
• JavaScript: const { Secp256k1PEM } = require('secp256k1-pem');

Use:

• Private Key: Secp256k1PEM.fromPrivateKey(PRIVATE_KEY).getPAM()
  • Sample Input: 0xff22437ccbedfffafa93a9f1da2e8c19c1711052799acf3b58ae5bebb5c6bd7b
• BIP32 Root Key: Secp256k1PEM.fromExtendedKey(EXTENDED_KEY).getPAM()
  • Sample Input: xprv9s21ZrQH143K416LEFgxfdhXevstXQ4vxnjV9vuXuC7NWnDZshZN9qUEext3SMBUcfd8w7H9Jrjk7Vi3eqgNbFy5tyMmzETqKqxJUB2Sr9R
• BIP39 Seed: Secp256k1PEM.fromSeed(SEED_HEX).getPAM()
  • Sample Input: 1d3604de517910bc57e3801fdb61b81580cd8bfd33dc437ddc83fd474eb8696638f56de46bbba77e72e492c4d8a0d2ad1e3fb69173a0b2b117233b4d69e49243
• BIP39 Mnemonic: Secp256k1PEM.fromMnemonic(MNEMONIC_ENGLISH).getPAM()
  • Sample Input: deputy annual debris outer baby prefer mammal scene insect obtain parrot length zero detail average nation address depart stem tuition fork rocket topple kidney

Notes

The function getPAM accepts an optional attribute path. This does not work with fromPrivateKey since it is a single account. For all other types, you can specify path as full path string or account index integer. The default deviration path is m/44'/60'/0'/0/0 to conform with the standard BIP32 Derivation Path.

Examples:

• Account Index: .getPAM(1) == ("m/44'/60'/0'/0/" + 1)
• Full Path: .getPAM("m/44'/60'/0'/0/1")