@Test
public void pureEnhance() throws IOException, CAdESException {
try (
InputStream dataIs = EnhanceSignTest.class.getClassLoader().getResourceAsStream("sign/woOCSP.pdf");
InputStream signIs = EnhanceSignTest.class.getClassLoader().getResourceAsStream("sign/woOCSP.pdf.sig")) {

ByteArrayInputStream signDerIs = Base64Utils.convertToDER(signIs);

CAdESSignature signature = new CAdESSignature(signDerIs, dataIs, null);

System.setProperty("ru.CryptoPro.reprov.enableCRLDP", "true");
System.setProperty("com.sun.security.enableCRLDP", "true");
System.setProperty("com.ibm.security.enableCRLDP", "true");
System.setProperty("ocsp.enabled", "true");

List<X509Certificate> chainList = new ArrayList<>();
List<SignerInformation> srcSignerInfos = new ArrayList<>();

for (CAdESSigner signer : signature.getCAdESSignerInfos()) {
srcSignerInfos.add(signer.getSignerInfo());
}

for (int cnt = 0; cnt < srcSignerInfos.size(); cnt++) {
CAdESSigner srcSigner = signature.getCAdESSignerInfo(cnt);
CAdESSigner enhancedSigner = srcSigner.enhance(JCP.PROVIDER_NAME, srcSigner.getSignerInfo().toASN1Structure().getDigestAlgorithm().getAlgorithm().getId(), chainList,
"http://tsp.uc-em.ru:2020/tsp-gost2012/tsp.srf", CAdESType.CAdES_X_Long_Type_1, new AttributeTable(new Hashtable()));
}

} catch (Throwable e) {
e.printStackTrace();
throw e;
}
}