ARG_ENABL_SET([gcm], [enables 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_ENABL_SET([curve25519], [enable Curve25519 Diffie-Hellman plugin.])
ARG_DISBL_SET([hmac], [disable HMAC crypto implementation plugin.])
ARG_ENABL_SET([md4], [enable MD4 software implementation plugin.])
ARG_DISBL_SET([md5], [disable MD5 software implementation plugin.])
ADD_PLUGIN([af-alg], [s charon scepclient pki scripts medsrv attest nm cmd aikgen])
ADD_PLUGIN([fips-prf], [s charon nm cmd])
ADD_PLUGIN([gmp], [s charon scepclient pki scripts manager medsrv attest nm cmd aikgen])
+ADD_PLUGIN([curve25519], [s charon scripts nm cmd])
ADD_PLUGIN([agent], [s charon nm cmd])
ADD_PLUGIN([keychain], [s charon cmd])
ADD_PLUGIN([chapoly], [s charon scripts nm cmd])
AM_CONDITIONAL(USE_MGF1, test x$mgf1 = xtrue)
AM_CONDITIONAL(USE_FIPS_PRF, test x$fips_prf = xtrue)
AM_CONDITIONAL(USE_GMP, test x$gmp = xtrue)
+AM_CONDITIONAL(USE_CURVE25519, test x$curve25519 = xtrue)
AM_CONDITIONAL(USE_RDRAND, test x$rdrand = xtrue)
AM_CONDITIONAL(USE_AESNI, test x$aesni = xtrue)
AM_CONDITIONAL(USE_RANDOM, test x$random = xtrue)
src/libstrongswan/plugins/mgf1/Makefile
src/libstrongswan/plugins/fips_prf/Makefile
src/libstrongswan/plugins/gmp/Makefile
+ src/libstrongswan/plugins/curve25519/Makefile
src/libstrongswan/plugins/rdrand/Makefile
src/libstrongswan/plugins/aesni/Makefile
src/libstrongswan/plugins/random/Makefile
endif
endif
+if USE_CURVE25519
+ SUBDIRS += plugins/curve25519
+if MONOLITHIC
+ libstrongswan_la_LIBADD += plugins/curve25519/libstrongswan-curve25519.la
+endif
+endif
+
if USE_RDRAND
SUBDIRS += plugins/rdrand
if MONOLITHIC
--- /dev/null
+AM_CPPFLAGS = \
+ -I$(top_srcdir)/src/libstrongswan
+
+AM_CFLAGS = \
+ $(PLUGIN_CFLAGS)
+
+if MONOLITHIC
+noinst_LTLIBRARIES = libstrongswan-curve25519.la
+else
+plugin_LTLIBRARIES = libstrongswan-curve25519.la
+endif
+
+libstrongswan_curve25519_la_SOURCES = \
+ curve25519_dh.h curve25519_dh.c \
+ curve25519_drv.h curve25519_drv.c \
+ curve25519_plugin.h curve25519_plugin.c
+
+libstrongswan_curve25519_la_LDFLAGS = -module -avoid-version
--- /dev/null
+/*
+ * Copyright (C) 2015 Martin Willi
+ * Copyright (C) 2015 revosec AG
+ *
+ * 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 <string.h>
+#include <stdint.h>
+
+#include "curve25519_dh.h"
+#include "curve25519_drv.h"
+
+typedef struct private_curve25519_dh_t private_curve25519_dh_t;
+
+/**
+ * Private data of an curve25519_dh_t object.
+ */
+struct private_curve25519_dh_t {
+
+ /**
+ * Public curve25519_dh_t interface.
+ */
+ curve25519_dh_t public;
+
+ /**
+ * Shared key, if computed
+ */
+ u_char shared[CURVE25519_KEY_SIZE];
+
+ /**
+ * TRUE if shared secret is computed
+ */
+ bool computed;
+
+ /**
+ * Curve25519 backend
+ */
+ curve25519_drv_t *drv;
+};
+
+/**
+ * Generate a valid Curve25519 key
+ */
+static bool generate_key(private_curve25519_dh_t *this)
+{
+ u_char key[CURVE25519_KEY_SIZE];
+ rng_t *rng;
+
+ rng = lib->crypto->create_rng(lib->crypto, RNG_STRONG);
+ if (!rng)
+ {
+ DBG1(DBG_LIB, "no RNG found for quality %N",
+ rng_quality_names, RNG_STRONG);
+ return FALSE;
+ }
+ if (!rng->get_bytes(rng, CURVE25519_KEY_SIZE, key))
+ {
+ rng->destroy(rng);
+ return FALSE;
+ }
+ rng->destroy(rng);
+
+ return this->drv->set_key(this->drv, key);
+}
+
+METHOD(diffie_hellman_t, set_other_public_value, bool,
+ private_curve25519_dh_t *this, chunk_t value)
+{
+ if (value.len == CURVE25519_KEY_SIZE)
+ {
+ if (this->drv->curve25519(this->drv, value.ptr, this->shared))
+ {
+ this->computed = TRUE;
+ return TRUE;
+ }
+ }
+ return FALSE;
+}
+
+METHOD(diffie_hellman_t, get_my_public_value, bool,
+ private_curve25519_dh_t *this, chunk_t *value)
+{
+ u_char basepoint[CURVE25519_KEY_SIZE] = { 9 };
+
+ *value = chunk_alloc(CURVE25519_KEY_SIZE);
+ if (this->drv->curve25519(this->drv, basepoint, value->ptr))
+ {
+ return TRUE;
+ }
+ free(value->ptr);
+ return FALSE;
+}
+
+METHOD(diffie_hellman_t, set_private_value, bool,
+ private_curve25519_dh_t *this, chunk_t value)
+{
+ if (value.len != CURVE25519_KEY_SIZE)
+ {
+ return FALSE;
+ }
+ return this->drv->set_key(this->drv, value.ptr);
+}
+
+METHOD(diffie_hellman_t, get_shared_secret, bool,
+ private_curve25519_dh_t *this, chunk_t *secret)
+{
+ if (!this->computed)
+ {
+ return FALSE;
+ }
+ *secret = chunk_clone(chunk_from_thing(this->shared));
+ return TRUE;
+}
+
+METHOD(diffie_hellman_t, get_dh_group, diffie_hellman_group_t,
+ private_curve25519_dh_t *this)
+{
+ return CURVE_25519;
+}
+
+METHOD(diffie_hellman_t, destroy, void,
+ private_curve25519_dh_t *this)
+{
+ this->drv->destroy(this->drv);
+ free(this);
+}
+
+/*
+ * Described in header.
+ */
+curve25519_dh_t *curve25519_dh_create(diffie_hellman_group_t group)
+{
+ private_curve25519_dh_t *this;
+
+ if (group != CURVE_25519)
+ {
+ return FALSE;
+ }
+
+ INIT(this,
+ .public = {
+ .dh = {
+ .get_shared_secret = _get_shared_secret,
+ .set_other_public_value = _set_other_public_value,
+ .get_my_public_value = _get_my_public_value,
+ .set_private_value = _set_private_value,
+ .get_dh_group = _get_dh_group,
+ .destroy = _destroy,
+ },
+ },
+ .drv = curve25519_drv_probe(),
+ );
+
+ if (!this->drv)
+ {
+ free(this);
+ return NULL;
+ }
+ if (!generate_key(this))
+ {
+ destroy(this);
+ return NULL;
+ }
+ return &this->public;
+}
--- /dev/null
+/*
+ * Copyright (C) 2014 Martin Willi
+ * Copyright (C) 2014 revosec AG
+ *
+ * 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 curve25519_dh curve25519_dh
+ * @{ @ingroup curve25519_p
+ */
+
+#ifndef CURVE25519_DH_H_
+#define CURVE25519_DH_H_
+
+typedef struct curve25519_dh_t curve25519_dh_t;
+
+#include <library.h>
+
+/**
+ * Diffie-Hellman implementation using Curve25519.
+ */
+struct curve25519_dh_t {
+
+ /**
+ * Implements diffie_hellman_t interface.
+ */
+ diffie_hellman_t dh;
+};
+
+/**
+ * Creates a new curve25519_dh_t object.
+ *
+ * @param group DH group, CURVE_25519
+ * @return curve25519_dh_t object, NULL on error
+ */
+curve25519_dh_t *curve25519_dh_create(diffie_hellman_group_t group);
+
+#endif /** CURVE25519_DH_H_ @}*/
--- /dev/null
+/*
+ * Copyright (C) 2015 Martin Willi
+ * Copyright (C) 2015 revosec AG
+ *
+ * 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 "curve25519_drv.h"
+
+typedef curve25519_drv_t*(*curve25519_drv_create)();
+
+/**
+ * See header.
+ */
+curve25519_drv_t *curve25519_drv_probe()
+{
+ curve25519_drv_create drivers[] = {
+ };
+ curve25519_drv_t *driver;
+ int i;
+
+ for (i = 0; i < countof(drivers); i++)
+ {
+ driver = drivers[i]();
+ if (driver)
+ {
+ return driver;
+ }
+ }
+ return NULL;
+}
--- /dev/null
+/*
+ * Copyright (C) 2015 Martin Willi
+ * Copyright (C) 2015 revosec AG
+ *
+ * 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 curve25519_drv curve25519_drv
+ * @{ @ingroup curve25519
+ */
+
+#ifndef CURVE25519_DRV_H_
+#define CURVE25519_DRV_H_
+
+typedef struct curve25519_drv_t curve25519_drv_t;
+
+#include <library.h>
+
+/**
+ * Private key size of Curve25519
+ */
+#define CURVE25519_KEY_SIZE 32
+
+/**
+ * Backend driver abstraction for Curve25519.
+ */
+struct curve25519_drv_t {
+
+ /**
+ * Set the private key.
+ *
+ * @param key 32 byte private key, clamped
+ * @return TRUE if key set
+ */
+ bool (*set_key)(curve25519_drv_t *this, u_char *key);
+
+ /**
+ * Calculate Curve25519 for the set key.
+ *
+ * @param in input data, 32 bytes
+ * @param out output data, 32 bytes
+ * @return TRUE if calculated
+ */
+ bool (*curve25519)(curve25519_drv_t *this, u_char *in, u_char *out);
+
+ /**
+ * Destroy a curve25519_drv_t.
+ */
+ void (*destroy)(curve25519_drv_t *this);
+};
+
+/**
+ * Create a curve25519_drv instance.
+ */
+curve25519_drv_t *curve25519_drv_probe();
+
+#endif /** CURVE25519_DRV_H_ @}*/
--- /dev/null
+/*
+ * Copyright (C) 2014 Martin Willi
+ * Copyright (C) 2014 revosec AG
+ *
+ * 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 "curve25519_plugin.h"
+#include "curve25519_dh.h"
+
+#include <library.h>
+
+typedef struct private_curve25519_plugin_t private_curve25519_plugin_t;
+
+/**
+ * private data of curve25519_plugin
+ */
+struct private_curve25519_plugin_t {
+
+ /**
+ * public functions
+ */
+ curve25519_plugin_t public;
+};
+
+METHOD(plugin_t, get_name, char*,
+ private_curve25519_plugin_t *this)
+{
+ return "curve25519";
+}
+
+METHOD(plugin_t, get_features, int,
+ private_curve25519_plugin_t *this, plugin_feature_t *features[])
+{
+ static plugin_feature_t f[] = {
+ PLUGIN_REGISTER(DH, curve25519_dh_create),
+ PLUGIN_PROVIDE(DH, CURVE_25519),
+ PLUGIN_DEPENDS(RNG, RNG_STRONG),
+ };
+ *features = f;
+ return countof(f);
+}
+
+METHOD(plugin_t, destroy, void,
+ private_curve25519_plugin_t *this)
+{
+ free(this);
+}
+
+/*
+ * see header file
+ */
+plugin_t *curve25519_plugin_create()
+{
+ private_curve25519_plugin_t *this;
+
+ INIT(this,
+ .public = {
+ .plugin = {
+ .get_name = _get_name,
+ .get_features = _get_features,
+ .destroy = _destroy,
+ },
+ },
+ );
+
+ return &this->public.plugin;
+}
--- /dev/null
+/*
+ * Copyright (C) 2014 Martin Willi
+ * Copyright (C) 2014 revosec AG
+ *
+ * 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 curve25519_p curve25519
+ * @ingroup plugins
+ *
+ * @defgroup curve25519_plugin curve25519_plugin
+ * @{ @ingroup curve25519_p
+ */
+
+#ifndef CURVE25519_PLUGIN_H_
+#define CURVE25519_PLUGIN_H_
+
+#include <plugins/plugin.h>
+
+typedef struct curve25519_plugin_t curve25519_plugin_t;
+
+/**
+ * Plugin providing a Curve25519 DH implementation
+ */
+struct curve25519_plugin_t {
+
+ /**
+ * implements plugin interface
+ */
+ plugin_t plugin;
+};
+
+#endif /** CURVE25519_PLUGIN_H_ @}*/
projects / strongswan.git / commitdiff