diff --git a/README.md b/README.md
index 50c50b2..adac8d4 100644
--- a/README.md
+++ b/README.md
@@ -281,15 +281,11 @@ Discussion / Help
 
 As we want to avoid OpenSSL, it has become necessary to replace the PEM file format. This means that if you use a custom pubkey (which you really REALLY shouldn't be doing), you have to adapt, sorry.
 
-We no longer ship `tg-server.pub` (old format), but instead `tg-server.tglpub` (new format). If you have a `.pub` and want to continue using telegram-purple, please use this (hopefully highly portable) tool: [pem2bignum](https://github.com/BenWiederhake/pem2bignum)
-
-You can also write your own conversion tool if you prefer. The format is really simple:
-
-1. `e`, the public exponent, encoded as big endian 32 bit fixed length (e.g. `0x00 01 00 01` for 65537)
-2. `n_len`, the length of `n` in bytes, encoded as big endian 32 bit fixed length (e.g. `0x00 00 01 00` for a 2048-bit = 256-byte key)
-3. `n_raw`, the raw modulus, encoded as big endian, using the previously indicated length (e.g. `0xC1 50 02 3E [248 bytes omitted] 21 79 25 1F` in the case of telegram's public RSA key.)
-
-If you are interested in developing a non-OpenSSL-licensed converter, look into [insane-triangle-banana](https://github.com/BenWiederhake/insane-triangle-banana).
+We no longer read the public key of the Telegram servers from a file.
+If you really need a different public key, and know what you're doing
+(e.g., connecting to some kind of test environment internal to Telegram,
+which also is a very bad idea), you need to find the call to `tgl_set_rsa_key_direct` in `telegram-purple.c`,
+and provide the key directly by yourself.
 
 
 FAQ
diff --git a/telegram-base.c b/telegram-base.c
index 816fe85..0e5ee46 100644
--- a/telegram-base.c
+++ b/telegram-base.c
@@ -35,68 +35,6 @@
 #define STATE_FILE_MAGIC 0x28949a93
 #define SECRET_CHAT_FILE_MAGIC 0x37a1988a
 
-static gboolean read_ui32 (int fd, unsigned int *ret) {
-  typedef char check_int_size[(sizeof (int) >= 4) ? 1 : -1];
-  (void) sizeof (check_int_size);
-
-  unsigned char buf[4];
-  if (4 != read (fd, buf, 4)) {
-    return 0;
-  }
-  // Ugly but works.
-  *ret = 0;
-  *ret |= buf[0];
-  *ret <<= 8;
-  *ret |= buf[1];
-  *ret <<= 8;
-  *ret |= buf[2];
-  *ret <<= 8;
-  *ret |= buf[3];
-  return 1;
-}
-
-int read_pubkey_file (const char *name, struct rsa_pubkey *dst) {
-  // Just to make sure nobody reads garbage.
-  dst->e = 0;
-  dst->n_len = 0;
-  dst->n_raw = NULL;
-
-  int pubkey_fd = open (name, O_RDONLY | O_BINARY);
-  if (pubkey_fd < 0) {
-    return 0;
-  }
-
-  unsigned int e;
-  unsigned int n_len;
-  if (!read_ui32 (pubkey_fd, &e) || !read_ui32 (pubkey_fd, &n_len) // Ensure successful reads
-      || n_len < 128 || n_len > 1024 || e < 5) { // Ensure (at least remotely) sane parameters.
-    close (pubkey_fd);
-    return 0;
-  }
-
-  unsigned char *n_raw = malloc (n_len);
-  if (!n_raw) {
-    close (pubkey_fd);
-    return 0;
-  }
-
-  gint readret;
-  readret = read (pubkey_fd, n_raw, n_len);
-  if (readret <= 0 || (n_len != (guint) readret)) {
-    free (n_raw);
-    close (pubkey_fd);
-    return 0;
-  }
-  close (pubkey_fd);
-
-  dst->e = e;
-  dst->n_len = n_len;
-  dst->n_raw = n_raw;
-  
-  info ("read pubkey file: n_len=%u e=%u", n_len, e);
-  return 1;
-}
-
 void read_state_file (struct tgl_state *TLS) {
   char *name = 0;
   name = g_strdup_printf("%s/%s", TLS->base_path, "state");
@@ -440,20 +378,6 @@ gchar *get_config_dir (char const *username) {
   return dir;
 }
 
-gchar *get_user_pk_path () {
-  /*
-     This can't be conditional on whether or not we're using telepathy, because
-     then we would need to make sure that `make local_install` also knows about
-     that location. So we *always* use ${HOME}/.purple/telegram-purple,
-     even when the other files aren't in this folder.
-     Note that this is only visible when using Telepathy/Empathy with
-     local_install, which should be kinda rare anyway (use telepathy-morse!).
-   */
-  return g_strconcat (g_get_home_dir(), G_DIR_SEPARATOR_S, ".purple",
-                                G_DIR_SEPARATOR_S, "telegram-purple",
-                                G_DIR_SEPARATOR_S, user_pk_filename, NULL);
-}
-
 gchar *get_download_dir (struct tgl_state *TLS) {
   assert (TLS->base_path);
   static gchar *dir;
diff --git a/telegram-base.h b/telegram-base.h
index 9e4a458..b6d4a4f 100644
--- a/telegram-base.h
+++ b/telegram-base.h
@@ -22,14 +22,6 @@
 
 #include "telegram-purple.h"
 
-struct rsa_pubkey {
-  unsigned int e;
-  unsigned int n_len;
-  unsigned char *n_raw;
-};
-
-gboolean read_pubkey_file (const char *name, struct rsa_pubkey *dst);
-
 void read_state_file (struct tgl_state *TLS);
 void read_auth_file (struct tgl_state *TLS);
 void write_auth_file (struct tgl_state *TLS);
@@ -40,7 +32,6 @@ void write_secret_chat_file (struct tgl_state *TLS);
 void write_secret_chat_gw (struct tgl_state *TLS, void *extra, int success, struct tgl_secret_chat *E);
 
 gchar *get_config_dir (char const *username);
-gchar *get_user_pk_path ();
 gchar *get_download_dir (struct tgl_state *TLS);
 
 int tgp_visualize_key (struct tgl_state *TLS, unsigned char* sha1_key);
diff --git a/telegram-purple.c b/telegram-purple.c
index c403b2d..4c84d06 100644
--- a/telegram-purple.c
+++ b/telegram-purple.c
@@ -18,6 +18,8 @@
     Copyright Matthias Jentsch, Vitaly Valtman, Ben Wiederhake, Christopher Althaus 2014-2015
 */
 
+#include <mtproto-key.h>
+
 #include "telegram-purple.h"
 #include "commit.h"
 
@@ -37,12 +39,6 @@ static void update_secret_chat_handler (struct tgl_state *TLS, struct tgl_secret
 static void update_on_failed_login (struct tgl_state *TLS);
 
 const char *config_dir = "telegram-purple";
-const char *user_pk_filename = "server.tglpub";
-#ifdef WIN32
-const char *pk_path = "server.tglpub";
-#else
-const char *pk_path = "/etc/telegram-purple/server.tglpub";
-#endif
 
 struct tgl_update_callback tgp_callback = {
   .new_msg = update_message_handler,
@@ -541,46 +537,9 @@ static void tgprpl_login (PurpleAccount * acct) {
   tgl_set_download_directory (TLS, get_download_dir(TLS));
   debug ("base configuration path: '%s'", TLS->base_path);
   
-  struct rsa_pubkey pubkey;
-#ifdef WIN32
-  gchar *global_pk_path = g_strdup_printf("%s/%s", DATADIR, pk_path);
-#else
-  gchar *global_pk_path = g_strdup(pk_path);
-#endif
-  debug ("trying global pubkey at %s", global_pk_path);
-  gboolean global_pk_loaded = read_pubkey_file (global_pk_path, &pubkey);
-  g_free(global_pk_path);
-
-  tgl_set_verbosity (TLS, 4);
-  if (global_pk_loaded) {
-    info ("using global pubkey");
-    tgl_set_rsa_key_direct (TLS, pubkey.e, pubkey.n_len, pubkey.n_raw);
-  } else {
-    char *user_pk_path = get_user_pk_path ();
-    debug ("trying local pubkey at %s", user_pk_path);
-    gboolean user_pk_loaded = read_pubkey_file (user_pk_path, &pubkey);
-
-    if (user_pk_loaded) {
-      info ("using local pubkey");
-      tgl_set_rsa_key_direct (TLS, pubkey.e, pubkey.n_len, pubkey.n_raw);
-    } else {
-      failure ("both didn't work. abort.");
-      char *cause = g_strdup_printf (_("Unable to sign on as %s: file (public key) not found."),
-                      purple_account_get_username (acct));
-      purple_connection_error_reason (gc, PURPLE_CONNECTION_ERROR_INVALID_SETTINGS, cause);
-      char *long_hint = g_strdup_printf (
-        _("Make sure telegram-purple is installed properly,\n"
-          "including the .tglpub file.\n"
-          "If you're running SELinux (e.g. when using Tails),\n"
-          "try 'make local_install', or simply copy\n"
-          "%1$s to %2$s."), pk_path, user_pk_path);
-      purple_notify_message (_telegram_protocol, PURPLE_NOTIFY_MSG_ERROR, cause,
-                             long_hint, NULL, NULL, NULL);
-      g_free (cause);
-      g_free (long_hint);
-      return;
-    }
-  }
+  tgl_set_rsa_key_direct (TLS, tglmp_get_default_e(),
+                               tglmp_get_default_key_len(),
+                               tglmp_get_default_key());
 
   tgl_set_ev_base (TLS, conn);
   tgl_set_net_methods (TLS, &tgp_conn_methods);