1 files changed, 19 insertions, 0 deletions

diff --git a/kex.c b/kex.c
index 15ea28b07..6cc2935fe 100644
--- a/kex.c
+++ b/kex.c
@@ -54,6 +54,10 @@
 #include "sshbuf.h"
 #include "digest.h"
 
+#ifdef GSSAPI
+#include "ssh-gss.h"
+#endif
+
 /* prototype */
 static int kex_choose_conf(struct ssh *);
 static int kex_input_newkeys(int, u_int32_t, struct ssh *);
@@ -105,6 +109,14 @@ static const struct kexalg kexalgs[] = {
 #endif /* HAVE_EVP_SHA256 || !WITH_OPENSSL */
         { NULL, -1, -1, -1},
 };
+static const struct kexalg kexalg_prefixes[] = {
+#ifdef GSSAPI
+        { KEX_GSS_GEX_SHA1_ID, KEX_GSS_GEX_SHA1, 0, SSH_DIGEST_SHA1 },
+        { KEX_GSS_GRP1_SHA1_ID, KEX_GSS_GRP1_SHA1, 0, SSH_DIGEST_SHA1 },
+        { KEX_GSS_GRP14_SHA1_ID, KEX_GSS_GRP14_SHA1, 0, SSH_DIGEST_SHA1 },
+#endif
+        { NULL, -1, -1, -1 },
+};
 
 char *
 kex_alg_list(char sep)
@@ -137,6 +149,10 @@ kex_alg_by_name(const char *name)
                 if (strcmp(k->name, name) == 0)
                         return k;
         }
+        for (k = kexalg_prefixes; k->name != NULL; k++) {
+                if (strncmp(k->name, name, strlen(k->name)) == 0)
+                        return k;
+        }
         return NULL;
 }
 
@@ -599,6 +615,9 @@ kex_free(struct kex *kex)
         sshbuf_free(kex->peer);
         sshbuf_free(kex->my);
         free(kex->session_id);
+#ifdef GSSAPI
+        free(kex->gss_host);
+#endif /* GSSAPI */
         free(kex->client_version_string);
         free(kex->server_version_string);
         free(kex->failed_choice);