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openwrt-packages/net/strongswan/patches/0904-gmpdh-Plugin-that-impl...

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From 9f60c2ea6394facac55b90ef66466e1b9edef2a9 Mon Sep 17 00:00:00 2001
From: Noel Kuntze <noel.kuntze@thermi.consulting>
Date: Mon, 12 Jul 2021 01:34:23 +0200
Subject: [PATCH 904/904] gmpdh: Plugin that implements gmp DH functions in an
extra plugin. Links and uses gmp plugin source and header files. Patch taken
verbatim from openwrt package sources.
---
configure.ac | 4 +
src/libstrongswan/Makefile.am | 7 ++
src/libstrongswan/plugins/gmpdh/Makefile.am | 19 ++++
.../plugins/gmpdh/gmpdh_plugin.c | 101 ++++++++++++++++++
.../plugins/gmpdh/gmpdh_plugin.h | 42 ++++++++
5 files changed, 173 insertions(+)
create mode 100644 src/libstrongswan/plugins/gmpdh/Makefile.am
create mode 100644 src/libstrongswan/plugins/gmpdh/gmpdh_plugin.c
create mode 100644 src/libstrongswan/plugins/gmpdh/gmpdh_plugin.h
--- a/configure.ac
+++ b/configure.ac
@@ -147,6 +147,7 @@ ARG_DISBL_SET([fips-prf], [disable
ARG_DISBL_SET([gcm], [disable the GCM AEAD wrapper crypto plugin.])
ARG_ENABL_SET([gcrypt], [enables the libgcrypt plugin.])
ARG_DISBL_SET([gmp], [disable GNU MP (libgmp) based crypto implementation plugin.])
+ARG_DISBL_SET([gmpdh], [disable GNU MP (libgmp) based static-linked crypto DH minimal implementation plugin.])
ARG_DISBL_SET([curve25519], [disable Curve25519 Diffie-Hellman plugin.])
ARG_DISBL_SET([hmac], [disable HMAC crypto implementation plugin.])
ARG_DISBL_SET([kdf], [disable KDF (prf+) implementation plugin.])
@@ -1574,6 +1575,7 @@ ADD_PLUGIN([pkcs8], [s ch
ADD_PLUGIN([af-alg], [s charon pki scripts medsrv attest nm cmd aikgen])
ADD_PLUGIN([fips-prf], [s charon nm cmd])
ADD_PLUGIN([gmp], [s charon pki scripts manager medsrv attest nm cmd aikgen fuzz])
+ADD_PLUGIN([gmpdh], [s charon pki scripts manager medsrv attest nm cmd aikgen])
ADD_PLUGIN([curve25519], [s charon pki scripts nm cmd])
ADD_PLUGIN([agent], [s charon nm cmd])
ADD_PLUGIN([keychain], [s charon cmd])
@@ -1716,6 +1718,7 @@ AM_CONDITIONAL(USE_SHA3, test x$sha3 = x
AM_CONDITIONAL(USE_MGF1, test x$mgf1 = xtrue)
AM_CONDITIONAL(USE_FIPS_PRF, test x$fips_prf = xtrue)
AM_CONDITIONAL(USE_GMP, test x$gmp = xtrue)
+AM_CONDITIONAL(USE_GMPDH, test x$gmpdh = xtrue)
AM_CONDITIONAL(USE_CURVE25519, test x$curve25519 = xtrue)
AM_CONDITIONAL(USE_RDRAND, test x$rdrand = xtrue)
AM_CONDITIONAL(USE_AESNI, test x$aesni = xtrue)
@@ -1997,6 +2000,7 @@ AC_CONFIG_FILES([
src/libstrongswan/plugins/mgf1/Makefile
src/libstrongswan/plugins/fips_prf/Makefile
src/libstrongswan/plugins/gmp/Makefile
+ src/libstrongswan/plugins/gmpdh/Makefile
src/libstrongswan/plugins/curve25519/Makefile
src/libstrongswan/plugins/rdrand/Makefile
src/libstrongswan/plugins/aesni/Makefile
--- a/src/libstrongswan/Makefile.am
+++ b/src/libstrongswan/Makefile.am
@@ -357,6 +357,13 @@ if MONOLITHIC
endif
endif
+if USE_GMPDH
+ SUBDIRS += plugins/gmpdh
+if MONOLITHIC
+ libstrongswan_la_LIBADD += plugins/gmpdh/libstrongswan-gmpdh.la
+endif
+endif
+
if USE_CURVE25519
SUBDIRS += plugins/curve25519
if MONOLITHIC
--- /dev/null
+++ b/src/libstrongswan/plugins/gmpdh/Makefile.am
@@ -0,0 +1,19 @@
+AM_CPPFLAGS = \
+ -I$(top_srcdir)/src/libstrongswan
+
+AM_CFLAGS = \
+ $(PLUGIN_CFLAGS)
+
+if MONOLITHIC
+noinst_LTLIBRARIES = libstrongswan-gmpdh.la
+else
+plugin_LTLIBRARIES = libstrongswan-gmpdh.la
+endif
+
+libstrongswan_gmpdh_la_SOURCES = \
+ gmpdh_plugin.h gmpdh_plugin.c \
+ ../gmp/gmp_diffie_hellman.c ../gmp/gmp_diffie_hellman.h
+
+
+libstrongswan_gmpdh_la_LDFLAGS = -module -avoid-version -Wl,-Bstatic -Wl,-lgmp -Wl,-Bdynamic -Wl,--as-needed $(FPIC)
+libstrongswan_gmpdh_la_LIBADD =
--- /dev/null
+++ b/src/libstrongswan/plugins/gmpdh/gmpdh_plugin.c
@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2008-2009 Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ */
+
+#include "gmpdh_plugin.h"
+
+#include <library.h>
+#include "../gmp/gmp_diffie_hellman.h"
+
+typedef struct private_gmpdh_plugin_t private_gmpdh_plugin_t;
+
+/**
+ * private data of gmp_plugin
+ */
+struct private_gmpdh_plugin_t {
+
+ /**
+ * public functions
+ */
+ gmpdh_plugin_t public;
+};
+
+METHOD(plugin_t, get_name, char*,
+ private_gmpdh_plugin_t *this)
+{
+ return "gmpdh";
+}
+
+METHOD(plugin_t, get_features, int,
+ private_gmpdh_plugin_t *this, plugin_feature_t *features[])
+{
+ static plugin_feature_t f[] = {
+ /* DH groups */
+ PLUGIN_REGISTER(KE, gmp_diffie_hellman_create),
+ PLUGIN_PROVIDE(KE, MODP_2048_BIT),
+ PLUGIN_DEPENDS(RNG, RNG_STRONG),
+ PLUGIN_PROVIDE(KE, MODP_2048_224),
+ PLUGIN_DEPENDS(RNG, RNG_STRONG),
+ PLUGIN_PROVIDE(KE, MODP_2048_256),
+ PLUGIN_DEPENDS(RNG, RNG_STRONG),
+ PLUGIN_PROVIDE(KE, MODP_1536_BIT),
+ PLUGIN_DEPENDS(RNG, RNG_STRONG),
+ PLUGIN_PROVIDE(KE, MODP_3072_BIT),
+ PLUGIN_DEPENDS(RNG, RNG_STRONG),
+ PLUGIN_PROVIDE(KE, MODP_4096_BIT),
+ PLUGIN_DEPENDS(RNG, RNG_STRONG),
+ PLUGIN_PROVIDE(KE, MODP_6144_BIT),
+ PLUGIN_DEPENDS(RNG, RNG_STRONG),
+ PLUGIN_PROVIDE(KE, MODP_8192_BIT),
+ PLUGIN_DEPENDS(RNG, RNG_STRONG),
+ PLUGIN_PROVIDE(KE, MODP_1024_BIT),
+ PLUGIN_DEPENDS(RNG, RNG_STRONG),
+ PLUGIN_PROVIDE(KE, MODP_1024_160),
+ PLUGIN_DEPENDS(RNG, RNG_STRONG),
+ PLUGIN_PROVIDE(KE, MODP_768_BIT),
+ PLUGIN_DEPENDS(RNG, RNG_STRONG),
+ PLUGIN_REGISTER(KE, gmp_diffie_hellman_create_custom),
+ PLUGIN_PROVIDE(KE, MODP_CUSTOM),
+ PLUGIN_DEPENDS(RNG, RNG_STRONG),
+ };
+ *features = f;
+ return countof(f);
+}
+
+METHOD(plugin_t, destroy, void,
+ private_gmpdh_plugin_t *this)
+{
+ free(this);
+}
+
+/*
+ * see header file
+ */
+plugin_t *gmpdh_plugin_create()
+{
+ private_gmpdh_plugin_t *this;
+
+ INIT(this,
+ .public = {
+ .plugin = {
+ .get_name = _get_name,
+ .get_features = _get_features,
+ .destroy = _destroy,
+ },
+ },
+ );
+
+ return &this->public.plugin;
+}
+
--- /dev/null
+++ b/src/libstrongswan/plugins/gmpdh/gmpdh_plugin.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2008 Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ */
+
+/**
+ * @defgroup gmpdh_p gmpdh
+ * @ingroup plugins
+ *
+ * @defgroup gmpdh_plugin gmpdh_plugin
+ * @{ @ingroup gmpdh_p
+ */
+
+#ifndef GMPDH_PLUGIN_H_
+#define GMPDH_PLUGIN_H_
+
+#include <plugins/plugin.h>
+
+typedef struct gmpdh_plugin_t gmpdh_plugin_t;
+
+/**
+ * Plugin implementing asymmetric crypto algorithms using the GNU MP library.
+ */
+struct gmpdh_plugin_t {
+
+ /**
+ * implements plugin interface
+ */
+ plugin_t plugin;
+};
+
+#endif /** GMPDH_PLUGIN_H_ @}*/
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