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Diffstat (limited to 'src/include/gnunet_abe_lib.h')
-rw-r--r-- | src/include/gnunet_abe_lib.h | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/src/include/gnunet_abe_lib.h b/src/include/gnunet_abe_lib.h new file mode 100644 index 000000000..f73ea2431 --- /dev/null +++ b/src/include/gnunet_abe_lib.h | |||
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1 | /* | ||
2 | This file is part of GNUnet. | ||
3 | Copyright (C) 2001-2018 GNUnet e.V. | ||
4 | |||
5 | GNUnet is free software; you can redistribute it and/or modify | ||
6 | it under the terms of the GNU General Public License as published | ||
7 | by the Free Software Foundation; either version 3, or (at your | ||
8 | option) any later version. | ||
9 | |||
10 | GNUnet is distributed in the hope that it will be useful, but | ||
11 | WITHOUT ANY WARRANTY; without even the implied warranty of | ||
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
13 | General Public License for more details. | ||
14 | |||
15 | You should have received a copy of the GNU General Public License | ||
16 | along with GNUnet; see the file COPYING. If not, write to the | ||
17 | Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | ||
18 | Boston, MA 02110-1301, USA. | ||
19 | */ | ||
20 | |||
21 | /** | ||
22 | * @file include/gnunet_abe_lib.h | ||
23 | * @brief Attribute-Based Encryption primitives for GNUnet | ||
24 | * | ||
25 | * @author Martin Schanzenbach | ||
26 | * | ||
27 | * @defgroup abe ABE Crypto library: Attribute-Based Encryption operations | ||
28 | * | ||
29 | */ | ||
30 | #ifndef GNUNET_ABE_LIB_H | ||
31 | #define GNUNET_ABE_LIB_H | ||
32 | |||
33 | #ifdef __cplusplus | ||
34 | extern "C" | ||
35 | { | ||
36 | #if 0 /* keep Emacsens' auto-indent happy */ | ||
37 | } | ||
38 | #endif | ||
39 | #endif | ||
40 | |||
41 | #include "gnunet_common.h" | ||
42 | #include <gcrypt.h> | ||
43 | |||
44 | /** | ||
45 | * @brief type for ABE master keys | ||
46 | */ | ||
47 | struct GNUNET_CRYPTO_AbeMasterKey; | ||
48 | |||
49 | /** | ||
50 | * @brief type for ABE keys | ||
51 | */ | ||
52 | struct GNUNET_CRYPTO_AbeKey; | ||
53 | |||
54 | |||
55 | |||
56 | /** | ||
57 | * @ingroup abe | ||
58 | * Create a new CP-ABE master key. Caller must free return value. | ||
59 | * | ||
60 | * @return fresh private key; free using #GNUNET_ABE_cpabe_delete_master_key | ||
61 | */ | ||
62 | struct GNUNET_ABE_AbeMasterKey * | ||
63 | GNUNET_ABE_cpabe_create_master_key (void); | ||
64 | |||
65 | /** | ||
66 | * @ingroup abe | ||
67 | * Delete a CP-ABE master key. | ||
68 | * | ||
69 | * @param key the master key | ||
70 | * @return fresh private key; free using #GNUNET_free | ||
71 | */ | ||
72 | void | ||
73 | GNUNET_ABE_cpabe_delete_master_key (struct GNUNET_ABE_AbeMasterKey *key); | ||
74 | |||
75 | /** | ||
76 | * @ingroup abe | ||
77 | * Create a new CP-ABE key. Caller must free return value. | ||
78 | * | ||
79 | * @param key the master key | ||
80 | * @param attrs the attributes to append to the key | ||
81 | * @return fresh private key; free using #GNUNET_ABE_cpabe_delete_key | ||
82 | */ | ||
83 | struct GNUNET_ABE_AbeKey * | ||
84 | GNUNET_ABE_cpabe_create_key (struct GNUNET_ABE_AbeMasterKey *key, | ||
85 | char **attrs); | ||
86 | |||
87 | /** | ||
88 | * @ingroup abe | ||
89 | * Delete a CP-ABE key. | ||
90 | * | ||
91 | * @param key the key to delete | ||
92 | * @param delete_pub GNUNE_YES if the public key should also be freed (bug in gabe) | ||
93 | * @return fresh private key; free using #GNUNET_free | ||
94 | */ | ||
95 | void | ||
96 | GNUNET_ABE_cpabe_delete_key (struct GNUNET_ABE_AbeKey *key, | ||
97 | int delete_pub); | ||
98 | |||
99 | |||
100 | /** | ||
101 | * @ingroup abe | ||
102 | * Encrypt a block using sessionkey. | ||
103 | * | ||
104 | * @param block the block to encrypt | ||
105 | * @param size the size of the @a block | ||
106 | * @param policy the ABE policy | ||
107 | * @param key the key used to encrypt | ||
108 | * @param result the result buffer. Will be allocated. Free using #GNUNET_free | ||
109 | * @return the size of the encrypted block, -1 for errors | ||
110 | */ | ||
111 | ssize_t | ||
112 | GNUNET_ABE_cpabe_encrypt (const void *block, | ||
113 | size_t size, | ||
114 | const char *policy, | ||
115 | const struct GNUNET_ABE_AbeMasterKey *key, | ||
116 | void **result); | ||
117 | |||
118 | /** | ||
119 | * @ingroup abe | ||
120 | * Decrypt a block using the ABE key. | ||
121 | * | ||
122 | * @param block the block to encrypt | ||
123 | * @param size the size of the @a block | ||
124 | * @param key the key used to decrypt | ||
125 | * @param result the result buffer. Will be allocated. Free using #GNUNET_free | ||
126 | * @return the size of the encrypted block, -1 for errors | ||
127 | */ | ||
128 | ssize_t | ||
129 | GNUNET_ABE_cpabe_decrypt (const void *block, | ||
130 | size_t size, | ||
131 | const struct GNUNET_ABE_AbeKey *key, | ||
132 | void **result); | ||
133 | |||
134 | /** | ||
135 | * @ingroup abe | ||
136 | * Serialize an ABE key. | ||
137 | * | ||
138 | * @param key the key to serialize | ||
139 | * @param result the result buffer. Will be allocated. Free using #GNUNET_free | ||
140 | * @return the size of the encrypted block, -1 for errors | ||
141 | */ | ||
142 | ssize_t | ||
143 | GNUNET_ABE_cpabe_serialize_key (const struct GNUNET_ABE_AbeKey *key, | ||
144 | void **result); | ||
145 | |||
146 | /** | ||
147 | * @ingroup abe | ||
148 | * Deserialize a serialized ABE key. | ||
149 | * | ||
150 | * @param data the data to deserialize | ||
151 | * @param len the length of the data. | ||
152 | * @return the ABE key. NULL of unsuccessful | ||
153 | */ | ||
154 | struct GNUNET_ABE_AbeKey* | ||
155 | GNUNET_ABE_cpabe_deserialize_key (const void *data, | ||
156 | size_t len); | ||
157 | |||
158 | /** | ||
159 | * @ingroup abe | ||
160 | * Serialize an ABE master key. | ||
161 | * | ||
162 | * @param key the key to serialize | ||
163 | * @param result the result buffer. Will be allocated. Free using #GNUNET_free | ||
164 | * @return the size of the encrypted block, -1 for errors | ||
165 | */ | ||
166 | ssize_t | ||
167 | GNUNET_ABE_cpabe_serialize_master_key (const struct GNUNET_ABE_AbeMasterKey *key, | ||
168 | void **result); | ||
169 | |||
170 | /** | ||
171 | * @ingroup abe | ||
172 | * Deserialize an ABE master key. | ||
173 | * | ||
174 | * @param data the data to deserialize | ||
175 | * @param len the length of the data. | ||
176 | * @return the ABE key. NULL of unsuccessful | ||
177 | */ | ||
178 | struct GNUNET_ABE_AbeMasterKey* | ||
179 | GNUNET_ABE_cpabe_deserialize_master_key (const void *data, | ||
180 | size_t len); | ||
181 | |||
182 | |||
183 | #if 0 /* keep Emacsens' auto-indent happy */ | ||
184 | { | ||
185 | #endif | ||
186 | #ifdef __cplusplus | ||
187 | } | ||
188 | #endif | ||
189 | |||
190 | |||
191 | /* ifndef GNUNET_ABE_LIB_H */ | ||
192 | #endif | ||
193 | /* end of gnunet_abe_lib.h */ | ||