fun startTLS(dataDir: String) {
        binding.button.setOnClickListener {
            val testUrl = "https://int.ebs.ru/vrf/"

            Thread {
                try {
                    val client = GostHttpClient(dataDir).createGostHttpClient()
                    val request = okhttp3.Request.Builder()
                        .url(testUrl)
                        .build()

                    val response = client.newCall(request).execute()

                    if (response.isSuccessful) {
                        Log.d("TLS", "TLS подключение успешно: ${response.code}")

                        // Получение информации о сертификате
                        val handshake = response.handshake
                        handshake?.peerCertificates?.forEachIndexed { index, cert ->
                            val x509Cert = cert as java.security.cert.X509Certificate
                            Log.d("TLS", "Сертификат [$index]:")
                            Log.d("TLS", "  Subject: ${x509Cert.subjectDN}")
                            Log.d("TLS", "  Issuer: ${x509Cert.issuerDN}")
                            Log.d("TLS", "  Serial Number: ${x509Cert.serialNumber}")
                            Log.d("TLS", "  Valid From: ${x509Cert.notBefore}")
                            Log.d("TLS", "  Valid To: ${x509Cert.notAfter}")
                        }

                    } else {
                        Log.d("TLS", "Ошибка подключения: ${response.code}")
                    }

                    response.close()

                } catch (e: Exception) {
                    Log.d("TLS", "Ошибка TLS-запроса: ${e.message}")
                    e.printStackTrace()
                }
            }.start()
        }
    }