@agentcommercekit/keys

Methods for dealing with cryptographic keys on multiple curves (secp256k1, Ed25519).

This package is part of the Agent Commerce Kit.

Installation

npm i @agentcommercekit/keys
# or
pnpm add @agentcommercekit/keys

Usage

import {
  encodePublicKeyFromKeypair,
  generateKeypair,
  keypairToJwk,
} from "@agentcommercekit/keys"

// Generate and format keypairs
const keypair = await generateKeypair("secp256k1")
const jwkKeypair = keypairToJwk(keypair)

// Format public keys
const hexPublicKey = encodePublicKeyFromKeypair("hex", keypair)
const jwkPublicKey = encodePublicKeyFromKeypair("jwk", keypair)
const multibasePublicKey = encodePublicKeyFromKeypair("multibase", keypair)
const base58PublicKey = encodePublicKeyFromKeypair("base58", keypair)

API

Keypair Operations

• generateKeypair(curve: KeyCurve, privateKeyBytes?: Uint8Array): Promise<Keypair>
• keypairToJwk(keypair: Keypair): PrivateKeyJwk
• jwkToKeypair(jwk: PrivateKeyJwk): Keypair

Public Key Formatting

• encodePublicKeyFromKeypair<T extends PublicKeyEncoding>(encoding: T, keypair: Keypair): PublicKeyTypeMap[T]

Additional Exports

Encoding utilities are also available via subpath exports:

import { base58ToBytes, bytesToBase58 } from "@agentcommercekit/keys/encoding"

License (MIT)

Copyright (c) 2025 Catena Labs, Inc.