1 /*############################################################################
2 # Copyright 2016 Intel Corporation
3 #
4 # Licensed under the Apache License, Version 2.0 (the "License");
5 # you may not use this file except in compliance with the License.
6 # You may obtain a copy of the License at
7 #
8 # http://www.apache.org/licenses/LICENSE-2.0
9 #
10 # Unless required by applicable law or agreed to in writing, software
11 # distributed under the License is distributed on an "AS IS" BASIS,
12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 # See the License for the specific language governing permissions and
14 # limitations under the License.
15 ############################################################################*/
16
17 /*!
18 * \file
19 * \brief Group public key implementation.
20 */
21 #include "epid/common/src/grouppubkey.h"
22 #include "epid/common/src/memory.h"
23
CreateGroupPubKey(GroupPubKey const * pub_key_str,EcGroup * G1,EcGroup * G2,GroupPubKey_ ** pub_key)24 EpidStatus CreateGroupPubKey(GroupPubKey const* pub_key_str, EcGroup* G1,
25 EcGroup* G2, GroupPubKey_** pub_key) {
26 EpidStatus result = kEpidErr;
27 GroupPubKey_* pubkey = NULL;
28 if (!pub_key_str || !G1 || !G2 || !pub_key) {
29 return kEpidBadArgErr;
30 }
31 do {
32 pubkey = SAFE_ALLOC(sizeof(GroupPubKey_));
33 if (!pubkey) {
34 result = kEpidMemAllocErr;
35 break;
36 }
37 result = NewEcPoint(G1, &pubkey->h1);
38 if (kEpidNoErr != result) {
39 break;
40 }
41 result =
42 ReadEcPoint(G1, &pub_key_str->h1, sizeof(pub_key_str->h1), pubkey->h1);
43 if (kEpidNoErr != result) {
44 break;
45 }
46 result = NewEcPoint(G1, &pubkey->h2);
47 if (kEpidNoErr != result) {
48 break;
49 }
50 result =
51 ReadEcPoint(G1, &pub_key_str->h2, sizeof(pub_key_str->h2), pubkey->h2);
52 if (kEpidNoErr != result) {
53 break;
54 }
55 result = NewEcPoint(G2, &pubkey->w);
56 if (kEpidNoErr != result) {
57 break;
58 }
59 result =
60 ReadEcPoint(G2, &pub_key_str->w, sizeof(pub_key_str->w), pubkey->w);
61 if (kEpidNoErr != result) {
62 break;
63 }
64 pubkey->gid = pub_key_str->gid;
65 *pub_key = pubkey;
66 result = kEpidNoErr;
67 } while (0);
68
69 if (kEpidNoErr != result && pubkey) {
70 DeleteEcPoint(&pubkey->w);
71 DeleteEcPoint(&pubkey->h2);
72 DeleteEcPoint(&pubkey->h1);
73 SAFE_FREE(pubkey);
74 }
75 return result;
76 }
77
DeleteGroupPubKey(GroupPubKey_ ** pub_key)78 void DeleteGroupPubKey(GroupPubKey_** pub_key) {
79 if (pub_key && *pub_key) {
80 DeleteEcPoint(&(*pub_key)->w);
81 DeleteEcPoint(&(*pub_key)->h2);
82 DeleteEcPoint(&(*pub_key)->h1);
83
84 SAFE_FREE(*pub_key);
85 }
86 }
87