signingUtilities.js

        const subjVal = typeAndValue.value.valueBlock.value;
        certificateData.subject[typeVal] = subjVal;
      }

      certificateData.signatureAlgorithm = signatureAlgorithm;
      certificateData.serialNumber = serialNumber;
      certificateData.validity = {
        notAfter,
        notBefore
      };

      return certificateData;
    });
  } catch (e) {
    console.error("Error parsing certificate", e);
  }
};

export const getCertificateChain = signatureBase64 => {
  const certificateChain = [];

  try {
    const certificates = parseCertificates(signatureBase64);

    // Add first certificate in the chain
    certificateChain.push(certificates[0]);

    // Go through all certificates to build a chain from first certificate to the root
    certificates.forEach(certificate => {
      if (certificateChain[0].issuer.commonName === certificate.subject.commonName) {
        certificateChain.unshift(certificate);
      }
    });
  } catch (e) {
    console.warn("Error getting certificate data", e);
  }

  return certificateChain;
};