diff --git a/include/libssh/options.h b/include/libssh/options.h
index fbe4a974..775933ae 100644
--- a/include/libssh/options.h
+++ b/include/libssh/options.h
@@ -24,7 +24,7 @@
 
 struct ssh_options_struct {
     struct error_struct error;
-    char *banner; /* explicit banner to send */
+    char *banner;
     char *username;
     char *host;
     char *bindaddr;
@@ -34,10 +34,7 @@ struct ssh_options_struct {
     char *known_hosts_file;
     socket_t fd; /* specificaly wanted file descriptor, don't connect host */
     int port;
-    int dont_verify_hostkey; /* Don't spare time, don't check host key ! unneeded to say it's dangerous and not safe */
-    int use_nonexisting_algo; /* if user sets a not supported algorithm for kex, don't complain */
     char *wanted_methods[10]; /* the kex methods can be choosed. better use the kex fonctions to do that */
-    void *wanted_cookie; /* wants a specific cookie to be sent ? if null, generate a new one */
     ssh_callbacks callbacks; /* Callbacks to user functions */
     long timeout; /* seconds */
     long timeout_usec;
diff --git a/libssh/dh.c b/libssh/dh.c
index 4f052516..9088bb9d 100644
--- a/libssh/dh.c
+++ b/libssh/dh.c
@@ -1000,12 +1000,6 @@ int signature_verify(ssh_session session, ssh_string signature) {
 
   enter_function();
 
-  if (session->options->dont_verify_hostkey) {
-    ssh_log(session, SSH_LOG_FUNCTIONS, "Host key wasn't verified");
-    leave_function();
-    return 0;
-  }
-
   pubkey = publickey_from_string(session,session->next_crypto->server_pubkey);
   if(pubkey == NULL) {
     leave_function();
diff --git a/libssh/kex.c b/libssh/kex.c
index ded0247e..d5eba61e 100644
--- a/libssh/kex.c
+++ b/libssh/kex.c
@@ -341,11 +341,7 @@ int set_kex(ssh_session session){
     int i;
     const char *wanted;
     enter_function();
-    /* the client might ask for a specific cookie to be sent. useful for server debugging */
-    if(options->wanted_cookie)
-        memcpy(client->cookie,options->wanted_cookie,16);
-    else
-        ssh_get_random(client->cookie,16,0);
+    ssh_get_random(client->cookie,16,0);
     client->methods=malloc(10 * sizeof(char **));
     if (client->methods == NULL) {
       ssh_set_error(session, SSH_FATAL, "No space left");
diff --git a/libssh/options.c b/libssh/options.c
index 275f9fea..e670f2bb 100644
--- a/libssh/options.c
+++ b/libssh/options.c
@@ -219,7 +219,7 @@ static char *get_username_from_uid(ssh_options opt, uid_t uid){
 #endif
 
 static int ssh_options_set_algo(ssh_options opt, int algo, const char *list) {
-  if ((!opt->use_nonexisting_algo) && !verify_existing_algo(algo, list)) {
+  if (!verify_existing_algo(algo, list)) {
     ssh_set_error(opt, SSH_REQUEST_DENIED,
         "Setting method: no algorithm for method \"%s\" (%s)\n",
         ssh_kex_nums[algo], list);
@@ -878,7 +878,7 @@ int ssh_options_set_wanted_algos(ssh_options opt, int algo, const char *list) {
     return -1;
   }
 
-  if ((!opt->use_nonexisting_algo) && !verify_existing_algo(algo, list)) {
+  if (!verify_existing_algo(algo, list)) {
     ssh_set_error(opt, SSH_REQUEST_DENIED, "Setting method: no algorithm "
         "for method \"%s\" (%s)\n", ssh_kex_nums[algo], list);
     return -1;
diff --git a/libssh/server.c b/libssh/server.c
index 1eb09d55..7e9ad0b8 100644
--- a/libssh/server.c
+++ b/libssh/server.c
@@ -285,15 +285,7 @@ static int server_set_kex(ssh_session  session) {
   char *wanted;
 
   ZERO_STRUCTP(server);
-  /*
-   * The program might ask for a specific cookie to be sent. Useful for server
-   * debugging
-   */
-  if (options->wanted_cookie) {
-    memcpy(server->cookie, options->wanted_cookie, 16);
-  } else {
-    ssh_get_random(server->cookie, 16, 0);
-  }
+  ssh_get_random(server->cookie, 16, 0);
 
   if (session->dsa_key != NULL && session->rsa_key != NULL) {
     if (ssh_options_set(options, SSH_OPTIONS_SERVER_HOSTKEY,