diff --git a/server/servermanager.h b/server/servermanager.h
index 6f6c2cad..414545c5 100644
--- a/server/servermanager.h
+++ b/server/servermanager.h
@@ -91,76 +91,7 @@ private:
 class CertificateGenerator
 {
 public:
-    static void generate(const QString &certificateFilename, const QString &keyFilename) {
-        EVP_PKEY * pkey = nullptr;
-        RSA * rsa = nullptr;
-        X509 * x509 = nullptr;
-        X509_NAME * name = nullptr;
-        BIO * bp_public = nullptr, * bp_private = nullptr;
-        const char * buffer = nullptr;
-        long size;
-
-        pkey = EVP_PKEY_new();
-        q_check_ptr(pkey);
-        rsa = RSA_generate_key(2048, RSA_F4, nullptr, nullptr);
-        q_check_ptr(rsa);
-        EVP_PKEY_assign_RSA(pkey, rsa);
-        x509 = X509_new();
-        q_check_ptr(x509);
-        ASN1_INTEGER_set(X509_get_serialNumber(x509), 1);
-        X509_gmtime_adj(X509_get_notBefore(x509), 0); // not before current time
-        X509_gmtime_adj(X509_get_notAfter(x509), 31536000L); // not after a year from this point
-        X509_set_pubkey(x509, pkey);
-        name = X509_get_subject_name(x509);
-        q_check_ptr(name);
-        X509_NAME_add_entry_by_txt(name, "C", MBSTRING_ASC, (unsigned char *)"AT", -1, -1, 0);
-        X509_NAME_add_entry_by_txt(name, "O", MBSTRING_ASC, (unsigned char *)"Guh GmbH", -1, -1, 0);
-        X509_NAME_add_entry_by_txt(name, "CN", MBSTRING_ASC, (unsigned char *)"guh core autocreated", -1, -1, 0);
-        X509_set_issuer_name(x509, name);
-        X509_sign(x509, pkey, EVP_sha1());
-        bp_private = BIO_new(BIO_s_mem());
-        q_check_ptr(bp_private);
-        if(PEM_write_bio_PrivateKey(bp_private, pkey, nullptr, nullptr, 0, nullptr, nullptr) != 1)
-        {
-            EVP_PKEY_free(pkey);
-            X509_free(x509);
-            BIO_free_all(bp_private);
-            qFatal("PEM_write_bio_PrivateKey");
-        }
-        bp_public = BIO_new(BIO_s_mem());
-        q_check_ptr(bp_public);
-        if(PEM_write_bio_X509(bp_public, x509) != 1)
-        {
-            EVP_PKEY_free(pkey);
-            X509_free(x509);
-            BIO_free_all(bp_public);
-            BIO_free_all(bp_private);
-            qFatal("PEM_write_bio_PrivateKey");
-        }
-        size = BIO_get_mem_data(bp_public, &buffer);
-        q_check_ptr(buffer);
-        QFileInfo certFi(certificateFilename);
-        QDir dir;
-        QFile certfile(certificateFilename);
-        if (!dir.mkpath(certFi.absolutePath()) || !certfile.open(QFile::WriteOnly | QFile::Truncate) || certfile.write(buffer, size) != size) {
-            qWarning() << "Error writing certificate file" << certificateFilename;
-        }
-        certfile.close();
-
-        size = BIO_get_mem_data(bp_private, &buffer);
-        q_check_ptr(buffer);
-        QFileInfo keyFi(keyFilename);
-        QFile keyFile(keyFilename);
-        if (!dir.mkpath(keyFi.absolutePath()) || !keyFile.open(QFile::WriteOnly | QFile::Truncate) || keyFile.write(buffer, size) != size) {
-            qWarning() << "Error writing key file" << keyFilename;
-        }
-        keyFile.close();
-
-        EVP_PKEY_free(pkey); // this will also free the rsa key
-        X509_free(x509);
-        BIO_free_all(bp_public);
-        BIO_free_all(bp_private);
-    }
+    static void generate(const QString &certificateFilename, const QString &keyFilename);
 };
 }