src/libstrongswan/plugins/curve25519/curve25519_plugin.c

   1 /*
   2  * Copyright (C) 2014 Martin Willi
   3  * Copyright (C) 2014 revosec AG
   4  *
   5  * Copyright (C) 2016 Andreas Steffen
   6  * HSR Hochschule fuer Technik Rapperswil
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by the
  10  * Free Software Foundation; either version 2 of the License, or (at your
  11  * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  15  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16  * for more details.
  17  */
  18
  19 #include "curve25519_plugin.h"
  20 #include "curve25519_dh.h"
  21 #include "curve25519_private_key.h"
  22 #include "curve25519_public_key.h"
  23 #include "curve25519_identity_hasher.h"
  24
  25 #include <library.h>
  26
  27 typedef struct private_curve25519_plugin_t private_curve25519_plugin_t;
  28
  29 /**
  30  * private data of curve25519_plugin
  31  */
  32 struct private_curve25519_plugin_t {
  33
  34         /**
  35          * public functions
  36          */
  37         curve25519_plugin_t public;
  38 };
  39
  40 METHOD(plugin_t, get_name, char*,
  41         private_curve25519_plugin_t *this)
  42 {
  43         return "curve25519";
  44 }
  45
  46 METHOD(plugin_t, get_features, int,
  47         private_curve25519_plugin_t *this, plugin_feature_t *features[])
  48 {
  49         static plugin_feature_t f[] = {
  50                 /* X25519 DH group */
  51                 PLUGIN_REGISTER(DH, curve25519_dh_create),
  52                         PLUGIN_PROVIDE(DH, CURVE_25519),
  53                                 PLUGIN_DEPENDS(RNG, RNG_STRONG),
  54                 /* Ed25519 private/public keys */
  55                 PLUGIN_REGISTER(PRIVKEY, curve25519_private_key_load, TRUE),
  56                         PLUGIN_PROVIDE(PRIVKEY, KEY_ED25519),
  57                 PLUGIN_REGISTER(PRIVKEY_GEN, curve25519_private_key_gen, FALSE),
  58                         PLUGIN_PROVIDE(PRIVKEY_GEN, KEY_ED25519),
  59                                 PLUGIN_DEPENDS(RNG, RNG_TRUE),
  60                                 PLUGIN_DEPENDS(HASHER, HASH_SHA512),
  61                 PLUGIN_REGISTER(PUBKEY, curve25519_public_key_load, TRUE),
  62                         PLUGIN_PROVIDE(PUBKEY, KEY_ED25519),
  63                 /* Ed25519 signature scheme, private */
  64                 PLUGIN_PROVIDE(PRIVKEY_SIGN, SIGN_ED25519),
  65                         PLUGIN_DEPENDS(HASHER, HASH_SHA512),
  66                 /* Ed25519 signature verification scheme, public */
  67                 PLUGIN_PROVIDE(PUBKEY_VERIFY, SIGN_ED25519),
  68                         PLUGIN_DEPENDS(HASHER, HASH_SHA512),
  69                 /* register a pro forma identity hasher */
  70                 PLUGIN_REGISTER(HASHER, curve25519_identity_hasher_create),
  71                         PLUGIN_PROVIDE(HASHER, HASH_IDENTITY),
  72         };
  73         *features = f;
  74         return countof(f);
  75 }
  76
  77 METHOD(plugin_t, destroy, void,
  78         private_curve25519_plugin_t *this)
  79 {
  80         free(this);
  81 }
  82
  83 /*
  84  * see header file
  85  */
  86 plugin_t *curve25519_plugin_create()
  87 {
  88         private_curve25519_plugin_t *this;
  89
  90         INIT(this,
  91                 .public = {
  92                         .plugin = {
  93                                 .get_name = _get_name,
  94                                 .get_features = _get_features,
  95                                 .destroy = _destroy,
  96                         },
  97                 },
  98         );
  99
 100         return &this->public.plugin;
 101 }