# HG changeset patch
# User Fedor Brunner <fedor.brunner@azet.sk>
# Date 1422025225 -28800
# Node ID 5c5ade33692666d8ccba71db9b4a3bced504cc2d
# Parent  1e496ad473bd4e971e4bdc5ace77197218403789
Prefer stronger algorithms in algorithm negotiation.
Prefer diffie-hellman-group14-sha1 (2048 bit) over
diffie-hellman-group1-sha1 (1024 bit).

Due to meet-in-the-middle attacks the effective key length of
three key 3DES is 112 bits. AES is stronger and faster then 3DES.

Prefer to delay the start of compression until after authentication
has completed. This avoids exposing compression code to attacks
from unauthenticated users.

(github pull request #9)

diff -r 1e496ad473bd -r 5c5ade336926 common-algo.c
--- a/common-algo.c	Fri Jan 23 22:59:30 2015 +0800
+++ b/common-algo.c	Fri Jan 23 23:00:25 2015 +0800
@@ -141,9 +141,6 @@
 #ifdef DROPBEAR_AES128
 	{"aes128-ctr", 0, &dropbear_aes128, 1, &dropbear_mode_ctr},
 #endif
-#ifdef DROPBEAR_3DES
-	{"3des-ctr", 0, &dropbear_3des, 1, &dropbear_mode_ctr},
-#endif
 #ifdef DROPBEAR_AES256
 	{"aes256-ctr", 0, &dropbear_aes256, 1, &dropbear_mode_ctr},
 #endif
@@ -153,9 +150,6 @@
 #ifdef DROPBEAR_AES128
 	{"aes128-cbc", 0, &dropbear_aes128, 1, &dropbear_mode_cbc},
 #endif
-#ifdef DROPBEAR_3DES
-	{"3des-cbc", 0, &dropbear_3des, 1, &dropbear_mode_cbc},
-#endif
 #ifdef DROPBEAR_AES256
 	{"aes256-cbc", 0, &dropbear_aes256, 1, &dropbear_mode_cbc},
 #endif
@@ -166,6 +160,12 @@
 #ifdef DROPBEAR_TWOFISH128
 	{"twofish128-cbc", 0, &dropbear_twofish128, 1, &dropbear_mode_cbc},
 #endif
+#ifdef DROPBEAR_3DES
+	{"3des-ctr", 0, &dropbear_3des, 1, &dropbear_mode_ctr},
+#endif
+#ifdef DROPBEAR_3DES
+	{"3des-cbc", 0, &dropbear_3des, 1, &dropbear_mode_cbc},
+#endif
 #ifdef DROPBEAR_BLOWFISH
 	{"blowfish-cbc", 0, &dropbear_blowfish, 1, &dropbear_mode_cbc},
 #endif
@@ -200,8 +200,8 @@
 
 #ifndef DISABLE_ZLIB
 algo_type ssh_compress[] = {
+	{"zlib@openssh.com", DROPBEAR_COMP_ZLIB_DELAY, NULL, 1, NULL},
 	{"zlib", DROPBEAR_COMP_ZLIB, NULL, 1, NULL},
-	{"zlib@openssh.com", DROPBEAR_COMP_ZLIB_DELAY, NULL, 1, NULL},
 	{"none", DROPBEAR_COMP_NONE, NULL, 1, NULL},
 	{NULL, 0, NULL, 0, NULL}
 };
@@ -270,8 +270,8 @@
 	{"ecdh-sha2-nistp256", 0, &kex_ecdh_nistp256, 1, NULL},
 #endif
 #endif
+	{"diffie-hellman-group14-sha1", 0, &kex_dh_group14, 1, NULL},
 	{"diffie-hellman-group1-sha1", 0, &kex_dh_group1, 1, NULL},
-	{"diffie-hellman-group14-sha1", 0, &kex_dh_group14, 1, NULL},
 #ifdef USE_KEXGUESS2
 	{KEXGUESS2_ALGO_NAME, KEXGUESS2_ALGO_ID, NULL, 1, NULL},
 #endif