@xmr-core/xmr-crypto-utils

Core crypto operations for Monero

Features

• Key image generation
• RCT operations such as Pedersen commitments, ECDH encode/decode
• Hash operations such as hash_to_scalar, hash_to_ec
• Derivation operations such as generating key derivations, deriving private and public keys
• Primitive functions for curve and scalar functions
• Ledger Nano S implementation under device-ledger
• "Default" device implementation for unified api usage for private keys
• Device interface to conform to for future hardware device implementations like Trezor
• Converting private keys to public keys
• Generating new keypairs
• Verifying keypairs
• Checking for subaddresses
• Creating addresses based on seeds
• Creating integrated addresses from normal addresses and a payment id
• Decoding address strings into their public key components
• Get address prefix for standard addresses
• Get address prefix for integrated addresses
• Get address prefix for subaddresses
• Random 256 bit hex strings
• Random 64 bit hex strings
• Random 32-byte ec scalars
• Check if a string contains a payment id
• Check if a payment id is a short(encrypted) or long(plaintext) id
• Encrypt/Decrypt a payment id with a keypair
• Generate a payment id

Usage

import { generate_key_image } from "@xmr-core/xmr-crypto-utils";
const secretKey = "...";
const publicKey = "...";
const keyImage = generate_key_image(publicKey, secretKey);

See @xmr-core/xmr-transaction to see how the device portions of @xmr-core/xmr-crypto-utils is used in the context of creating transactions, or @xmr-core/xmr-mymonero-libs to see how its used for checking if transactions belong to the current hardware device being used.

Installation

Install @xmr-core/xmr-crypto-utils by running:

yarn add @xmr-core/xmr-crypto-utils

License

The project is licensed under the MIT license.