strongswan: gmpdh plugin, package and strongswan-isakmp metapackage
gmpdh plugin implements DH Groups (same as normal GMP plugin), but links to GMP statically and is stripped of all RSA based stuff. Binary size for plugin is ~20kbytes with no dependency on libgmp (200+ kbytes after squash), easilly fitting into flash space restricted devices. strongswan-isakmp metapackage defines a minimal set of strongswan plugins (including gmpdh) for ISAKMP / IKEv1 PSK tunnels. Will fit even 4mb routers (like tplink wr841n) with disabled IPv6 support and packages (so its a trade - IPv6 or ipsec tunnels). Signed-of-by: Mikalai Miadzvedz <brainsucker.na@gmail.com>
This commit is contained in:
brainsucker-na
Mikalai Miadzvedz
parent
fbec0d5d11
commit
f705b3c0bf
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@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
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PKG_NAME:=strongswan
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PKG_VERSION:=5.3.3
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PKG_RELEASE:=1
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PKG_RELEASE:=2
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PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
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PKG_SOURCE_URL:=http://download.strongswan.org/ http://download2.strongswan.org/
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@ -45,6 +45,7 @@ PKG_MOD_AVAILABLE:= \
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gcm \
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gcrypt \
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gmp \
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gmpdh \
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ha \
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hmac \
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kernel-libipsec \
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@ -254,6 +255,37 @@ $(call Package/strongswan/description/Default)
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This meta-package contains only dependencies to match upstream defaults.
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endef
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define Package/strongswan-isakmp
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$(call Package/strongswan/Default)
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TITLE+= (isakmp)
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DEPENDS:= +strongswan \
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+strongswan-charon \
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+strongswan-mod-aes \
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+strongswan-mod-des \
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+strongswan-mod-gmpdh \
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+strongswan-mod-hmac \
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+strongswan-mod-kernel-netlink \
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+strongswan-mod-md5 \
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+strongswan-mod-nonce \
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+strongswan-mod-pubkey \
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+strongswan-mod-random \
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+strongswan-mod-sha1 \
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+strongswan-mod-socket-default \
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+strongswan-mod-stroke \
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+strongswan-mod-uci \
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+strongswan-mod-updown \
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+strongswan-utils
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endef
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define Package/strongswan-isakmp/description
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$(call Package/strongswan/description/Default)
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This meta-package contains only dependencies to establish ISAKMP /
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IKE PSK connections, dropping other capabilities in favor of small size
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Can fit most routers even with 4Mb flash (after removing IPv6 support).
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endef
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define Package/strongswan-minimal
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$(call Package/strongswan/Default)
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TITLE+= (minimal)
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@ -376,6 +408,10 @@ define Package/strongswan-full/install
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true
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endef
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define Package/strongswan-isakmp/install
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true
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endef
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define Package/strongswan-minimal/install
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true
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endef
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@ -454,6 +490,7 @@ $(eval $(call BuildPackage,strongswan))
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$(eval $(call BuildPackage,strongswan-default))
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$(eval $(call BuildPackage,strongswan-full))
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$(eval $(call BuildPackage,strongswan-minimal))
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$(eval $(call BuildPackage,strongswan-isakmp))
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$(eval $(call BuildPackage,strongswan-charon))
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$(eval $(call BuildPackage,strongswan-utils))
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$(eval $(call BuildPackage,strongswan-libtls))
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@ -484,6 +521,7 @@ $(eval $(call BuildPlugin,fips-prf,FIPS PRF crypto,+strongswan-mod-sha1))
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$(eval $(call BuildPlugin,gcm,GCM AEAD wrapper crypto,))
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$(eval $(call BuildPlugin,gcrypt,libgcrypt,+PACKAGE_strongswan-mod-gcrypt:libgcrypt))
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$(eval $(call BuildPlugin,gmp,libgmp,+PACKAGE_strongswan-mod-gmp:libgmp))
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$(eval $(call BuildPlugin,gmpdh,DH-Groups; no libgmp dep,))
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$(eval $(call BuildPlugin,ha,high availability cluster,))
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$(eval $(call BuildPlugin,hmac,HMAC crypto,))
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$(eval $(call BuildPlugin,kernel-libipsec,libipsec kernel interface,))
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@ -0,0 +1,221 @@
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--- a/configure.ac
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+++ b/configure.ac
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@@ -135,6 +135,7 @@ ARG_DISBL_SET([fips-prf], [disable
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ARG_ENABL_SET([gcm], [enables the GCM AEAD wrapper crypto plugin.])
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ARG_ENABL_SET([gcrypt], [enables the libgcrypt plugin.])
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ARG_DISBL_SET([gmp], [disable GNU MP (libgmp) based crypto implementation plugin.])
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+ARG_DISBL_SET([gmpdh], [disable GNU MP (libgmp) based static-linked crypto DH minimal implementation plugin.])
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ARG_DISBL_SET([hmac], [disable HMAC crypto implementation plugin.])
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ARG_ENABL_SET([md4], [enable MD4 software implementation plugin.])
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ARG_DISBL_SET([md5], [disable MD5 software implementation plugin.])
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@@ -1310,6 +1311,7 @@ ADD_PLUGIN([gcrypt], [s ch
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ADD_PLUGIN([af-alg], [s charon scepclient pki scripts medsrv attest nm cmd aikgen])
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ADD_PLUGIN([fips-prf], [s charon nm cmd])
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ADD_PLUGIN([gmp], [s charon scepclient pki scripts manager medsrv attest nm cmd aikgen])
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+ADD_PLUGIN([gmpdh], [s charon scepclient pki scripts manager medsrv attest nm cmd aikgen])
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ADD_PLUGIN([agent], [s charon nm cmd])
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ADD_PLUGIN([keychain], [s charon cmd])
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ADD_PLUGIN([chapoly], [s charon scripts nm cmd])
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@@ -1441,6 +1443,7 @@ AM_CONDITIONAL(USE_SHA1, test x$sha1 = x
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AM_CONDITIONAL(USE_SHA2, test x$sha2 = xtrue)
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AM_CONDITIONAL(USE_FIPS_PRF, test x$fips_prf = xtrue)
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AM_CONDITIONAL(USE_GMP, test x$gmp = xtrue)
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+AM_CONDITIONAL(USE_GMPDH, test x$gmpdh = xtrue)
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AM_CONDITIONAL(USE_RDRAND, test x$rdrand = xtrue)
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AM_CONDITIONAL(USE_AESNI, test x$aesni = xtrue)
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AM_CONDITIONAL(USE_RANDOM, test x$random = xtrue)
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@@ -1688,6 +1691,7 @@ AC_CONFIG_FILES([
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src/libstrongswan/plugins/sha2/Makefile
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src/libstrongswan/plugins/fips_prf/Makefile
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src/libstrongswan/plugins/gmp/Makefile
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+ src/libstrongswan/plugins/gmpdh/Makefile
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src/libstrongswan/plugins/rdrand/Makefile
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src/libstrongswan/plugins/aesni/Makefile
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src/libstrongswan/plugins/random/Makefile
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--- a/src/libstrongswan/Makefile.am
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+++ b/src/libstrongswan/Makefile.am
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@@ -295,6 +295,13 @@ if MONOLITHIC
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endif
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endif
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+if USE_GMPDH
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+ SUBDIRS += plugins/gmpdh
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+if MONOLITHIC
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+ libstrongswan_la_LIBADD += plugins/gmpdh/libstrongswan-gmpdh.la
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+endif
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+endif
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+
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if USE_RDRAND
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SUBDIRS += plugins/rdrand
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if MONOLITHIC
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--- /dev/null
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+++ b/src/libstrongswan/plugins/gmpdh/Makefile.am
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@@ -0,0 +1,19 @@
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+AM_CPPFLAGS = \
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+ -I$(top_srcdir)/src/libstrongswan
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+
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+AM_CFLAGS = \
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+ $(PLUGIN_CFLAGS)
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+
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+if MONOLITHIC
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+noinst_LTLIBRARIES = libstrongswan-gmpdh.la
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+else
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+plugin_LTLIBRARIES = libstrongswan-gmpdh.la
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+endif
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+
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+libstrongswan_gmpdh_la_SOURCES = \
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+ gmpdh_plugin.h gmpdh_plugin.c \
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+ ../gmp/gmp_diffie_hellman.c ../gmp/gmp_diffie_hellman.h
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+
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+
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+libstrongswan_gmpdh_la_LDFLAGS = -module -avoid-version -Wl,-Bstatic -Wl,-lgmp -Wl,-Bdynamic -Wl,--as-needed
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+libstrongswan_gmpdh_la_LIBADD =
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--- /dev/null
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+++ b/src/libstrongswan/plugins/gmpdh/gmpdh_plugin.c
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@@ -0,0 +1,101 @@
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+/*
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+ * Copyright (C) 2008-2009 Martin Willi
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+ * Hochschule fuer Technik Rapperswil
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+ *
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+ * This program is free software; you can redistribute it and/or modify it
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+ * under the terms of the GNU General Public License as published by the
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+ * Free Software Foundation; either version 2 of the License, or (at your
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+ * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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+ *
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+ * This program is distributed in the hope that it will be useful, but
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+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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+ * for more details.
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+ */
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+
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+#include "gmpdh_plugin.h"
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+
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+#include <library.h>
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+#include "../gmp/gmp_diffie_hellman.h"
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+
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+typedef struct private_gmpdh_plugin_t private_gmpdh_plugin_t;
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+
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+/**
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+ * private data of gmp_plugin
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+ */
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+struct private_gmpdh_plugin_t {
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+
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+ /**
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+ * public functions
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+ */
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+ gmpdh_plugin_t public;
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+};
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+
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+METHOD(plugin_t, get_name, char*,
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+ private_gmpdh_plugin_t *this)
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+{
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+ return "gmpdh";
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+}
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+
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+METHOD(plugin_t, get_features, int,
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+ private_gmpdh_plugin_t *this, plugin_feature_t *features[])
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+{
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+ static plugin_feature_t f[] = {
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+ /* DH groups */
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+ PLUGIN_REGISTER(DH, gmp_diffie_hellman_create),
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+ PLUGIN_PROVIDE(DH, MODP_2048_BIT),
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+ PLUGIN_DEPENDS(RNG, RNG_STRONG),
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+ PLUGIN_PROVIDE(DH, MODP_2048_224),
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+ PLUGIN_DEPENDS(RNG, RNG_STRONG),
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+ PLUGIN_PROVIDE(DH, MODP_2048_256),
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+ PLUGIN_DEPENDS(RNG, RNG_STRONG),
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+ PLUGIN_PROVIDE(DH, MODP_1536_BIT),
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+ PLUGIN_DEPENDS(RNG, RNG_STRONG),
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+ PLUGIN_PROVIDE(DH, MODP_3072_BIT),
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+ PLUGIN_DEPENDS(RNG, RNG_STRONG),
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+ PLUGIN_PROVIDE(DH, MODP_4096_BIT),
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+ PLUGIN_DEPENDS(RNG, RNG_STRONG),
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+ PLUGIN_PROVIDE(DH, MODP_6144_BIT),
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+ PLUGIN_DEPENDS(RNG, RNG_STRONG),
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+ PLUGIN_PROVIDE(DH, MODP_8192_BIT),
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+ PLUGIN_DEPENDS(RNG, RNG_STRONG),
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+ PLUGIN_PROVIDE(DH, MODP_1024_BIT),
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+ PLUGIN_DEPENDS(RNG, RNG_STRONG),
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+ PLUGIN_PROVIDE(DH, MODP_1024_160),
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+ PLUGIN_DEPENDS(RNG, RNG_STRONG),
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+ PLUGIN_PROVIDE(DH, MODP_768_BIT),
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+ PLUGIN_DEPENDS(RNG, RNG_STRONG),
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+ PLUGIN_REGISTER(DH, gmp_diffie_hellman_create_custom),
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+ PLUGIN_PROVIDE(DH, MODP_CUSTOM),
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+ PLUGIN_DEPENDS(RNG, RNG_STRONG),
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+ };
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+ *features = f;
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+ return countof(f);
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+}
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+
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+METHOD(plugin_t, destroy, void,
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+ private_gmpdh_plugin_t *this)
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+{
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+ free(this);
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+}
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+
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+/*
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+ * see header file
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+ */
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+plugin_t *gmpdh_plugin_create()
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+{
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+ private_gmpdh_plugin_t *this;
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+
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+ INIT(this,
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+ .public = {
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+ .plugin = {
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+ .get_name = _get_name,
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+ .get_features = _get_features,
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+ .destroy = _destroy,
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+ },
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+ },
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+ );
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+
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+ return &this->public.plugin;
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+}
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+
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--- /dev/null
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+++ b/src/libstrongswan/plugins/gmpdh/gmpdh_plugin.h
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@@ -0,0 +1,42 @@
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+/*
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+ * Copyright (C) 2008 Martin Willi
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+ * Hochschule fuer Technik Rapperswil
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+ *
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+ * This program is free software; you can redistribute it and/or modify it
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+ * under the terms of the GNU General Public License as published by the
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+ * Free Software Foundation; either version 2 of the License, or (at your
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+ * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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+ *
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+ * This program is distributed in the hope that it will be useful, but
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+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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+ * for more details.
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+ */
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+
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+/**
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+ * @defgroup gmpdh_p gmpdh
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+ * @ingroup plugins
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+ *
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+ * @defgroup gmpdh_plugin gmpdh_plugin
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+ * @{ @ingroup gmpdh_p
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+ */
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+
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+#ifndef GMPDH_PLUGIN_H_
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+#define GMPDH_PLUGIN_H_
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+
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+#include <plugins/plugin.h>
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+
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+typedef struct gmpdh_plugin_t gmpdh_plugin_t;
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+
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+/**
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+ * Plugin implementing asymmetric crypto algorithms using the GNU MP library.
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+ */
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+struct gmpdh_plugin_t {
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+
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+ /**
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+ * implements plugin interface
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+ */
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+ plugin_t plugin;
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+};
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+
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+#endif /** GMPDH_PLUGIN_H_ @}*/
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