String createSelfSignedRequest(DBOCertGenRequest request) {
        GostCertificateRequest gostCertificateRequest = new GostCertificateRequest(JCP.PROVIDER_NAME as String)
        // Заполним данные запроса на сертификат
        gostCertificateRequest.setKeyUsage(GostCertificateRequest.CRYPT_DEFAULT)
        String pk = this.cryptoProvider.getPublicKeyFromRequest(request.certificateRequestBytes)
        GostPublicKey publicKey = new GostPublicKey(Hex.decode(pk))
        gostCertificateRequest.setPublicKeyInfo(publicKey)
        String subject = createSubject(request.cioRequest)
        gostCertificateRequest.setSubjectInfo(subject)
        // Подписываем ключом, который используется для авторизации в УЦ
        KeyStore keyStore = KeyStore.getInstance("HDImageStore", "JCP")
        keyStore.load(null, null)
        PrivateKey privateKey = keyStore.getKey("CaOperator", System.getProperty("javax.net.ssl.keyStorePassword").toCharArray()) as PrivateKey
        gostCertificateRequest.encodeAndSign(privateKey, JCP.GOST_EL_SIGN_NAME.toString())
        // Сохраняем в base64
        ByteArrayOutputStream baos = new ByteArrayOutputStream()
        PrintStream ps = new PrintStream(baos)
        gostCertificateRequest.printToBASE64(ps)
        String content = new String(baos.toByteArray(), StandardCharsets.UTF_8)
        return content
    }