From d0f295837a03f7f52000ae6d395827bdde7996a4 Mon Sep 17 00:00:00 2001 From: Paul Spooren Date: Tue, 1 Sep 2020 09:13:28 -1000 Subject: [PATCH] dropbear: Enable Ed25519 for normal devices The Ed25519 key pairs are much shorter than RSA pairs and are supported by default in OpenSSH. Looking at websites explaining how to create new SSH keys, many suggest using Ed25519 rather than RSA, however consider the former as not yet widely established. OpenWrt likely has a positive influence on that development. As enabling Ed25519 is a compile time option, it is currently not possible to install the feature via `opkg` nor select that option in an ImageBuilder. Due to the size impact of **12kB** the option should only be enabled for devices with `!SMALL_FLASH`. This approach seems cleaner than splitting `dropbear` into two packages like `dropbear` and `dropbear-ed25519`. Signed-off-by: Paul Spooren --- package/network/services/dropbear/Config.in | 2 +- package/network/services/dropbear/Makefile | 5 +++-- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/package/network/services/dropbear/Config.in b/package/network/services/dropbear/Config.in index 108b80376b..6aa5a7e4e1 100644 --- a/package/network/services/dropbear/Config.in +++ b/package/network/services/dropbear/Config.in @@ -51,7 +51,7 @@ config DROPBEAR_ECC_FULL config DROPBEAR_ED25519 bool "Ed25519 support" - default n + default y if !SMALL_FLASH help This enables the following public key algorithm: ssh-ed25519 diff --git a/package/network/services/dropbear/Makefile b/package/network/services/dropbear/Makefile index 1cda98bf7e..6c97d3e77b 100644 --- a/package/network/services/dropbear/Makefile +++ b/package/network/services/dropbear/Makefile @@ -1,5 +1,5 @@ # -# Copyright (C) 2006-2016 OpenWrt.org +# Copyright (C) 2006-2020 OpenWrt.org # # This is free software, licensed under the GNU General Public License v2. # See /LICENSE for more information. @@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk PKG_NAME:=dropbear PKG_VERSION:=2020.80 -PKG_RELEASE:=2 +PKG_RELEASE:=3 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2 PKG_SOURCE_URL:= \ @@ -25,6 +25,7 @@ PKG_BUILD_PARALLEL:=1 PKG_ASLR_PIE_REGULAR:=1 PKG_USE_MIPS16:=0 PKG_FIXUP:=autoreconf +PKG_FLAGS:=nonshared PKG_CONFIG_DEPENDS:= \ CONFIG_TARGET_INIT_PATH CONFIG_DROPBEAR_ECC CONFIG_DROPBEAR_ECC_FULL \ -- 2.30.2