packages/server/src/helpers/convertPEMToBytes.ts


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import { isoBase64URL } from './iso/index.ts';

/**
 * Take a certificate in PEM format and convert it to bytes
 */
export function convertPEMToBytes(pem: string): Uint8Array {
  const certBase64 = pem
    .replace('-----BEGIN CERTIFICATE-----', '')
    .replace('-----END CERTIFICATE-----', '')
    .replace(/[\n ]/g, '');

  return isoBase64URL.toBuffer(certBase64, 'base64');
}