ed25519 private and public keys to pem

index.js

import { composePrivateKey, composePublicKey } from 'crypto-key-composer'

function privateToPem(privateKey) {
  var decomposed = {
    format: 'pkcs8-pem',
    keyAlgorithm: { id: 'ed25519' },
    keyData: {
      seed: privateKey,
    },
  }
  return composePrivateKey(decomposed)
}

function publicToPem(publicKey) {
  var decomposed = {
    format: 'spki-pem',
    keyAlgorithm: { id: 'ed25519' },
    keyData: {
      bytes: publicKey,
    },
  }
  return composePublicKey(decomposed)
}