import CryptoProProvider from 'crypto-pro-provider';

  CryptoProProvider.certificates()
    .then((certificates) => {
      // list of certificates
    })
    .catch((error) => {
      // error
    });

  // thumbprint - hash of the before selected certificate
  // base64 - message encoded to base64
  CryptoProProvider.sign(thumbprint, base64)
    .then((signature) => {
      // signed message
    })
    .catch((error) => {
      // error
    });

  // thumbprint - hash of the before selected certificate
  // base64 - message encoded to base64
  CryptoProProvider.paramsForDetachedSignature(thumbprint, base64)
    .then((object) => {
      // {
      //   signature_value: <value of signature>,
      //   x509certificate: <value of certificate>
      // }
    })
    .catch((error) => {
      // error
    });