KeyStore keyStore = KeyStore.getInstance(certKeyStore, "JCP");
        keyStore.load(null, null);

        PrivateKey privateKey = (PrivateKey) keyStore.getKey(alias, password);
        List<java.security.cert.Certificate> lChain = Arrays.asList(keyStore.getCertificateChain(alias));
        CAdESSignature cadesSignature = new CAdESSignature(isDetached);

        Collection<X509CertificateHolder> certificateHolders = new ArrayList<>();
        certificateHolders.add(new X509CertificateHolder(keyStore.getCertificate(alias).getEncoded()));
        CollectionStore<X509CertificateHolder> store = new CollectionStore<>(certificateHolders);
        cadesSignature.setCertificateStore(store);

        cadesSignature.addSigner(
                JCP.PROVIDER_NAME,
                JCP.GOST_DIGEST_OID,
                JCP.GOST_EL_KEY_OID,
                privateKey,
                lChain,
                CAdESType.CAdES_BES,
                null,
                false
        );

keytool -list -keystore /home/alex/.jdks/corretto-21.0.5/lib/security/cacerts | grep test