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author | Christian Grothoff <christian@grothoff.org> | 2014-12-06 22:41:30 +0000 |
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committer | Christian Grothoff <christian@grothoff.org> | 2014-12-06 22:41:30 +0000 |
commit | 9d487bb2fe029b369f362bdbe4697005061a4e5e (patch) | |
tree | 5c2eb6849a5dd7a813a07e29a7f2be60af9b9792 /src/scalarproduct/gnunet-service-scalarproduct.h | |
parent | 6cd1fc3aa29926ce0326d07ba684e1b65a1a0db7 (diff) | |
download | gnunet-9d487bb2fe029b369f362bdbe4697005061a4e5e.tar.gz gnunet-9d487bb2fe029b369f362bdbe4697005061a4e5e.zip |
massive rework of scalarproduct service, splitting into Alice and Bob
Diffstat (limited to 'src/scalarproduct/gnunet-service-scalarproduct.h')
-rw-r--r-- | src/scalarproduct/gnunet-service-scalarproduct.h | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/src/scalarproduct/gnunet-service-scalarproduct.h b/src/scalarproduct/gnunet-service-scalarproduct.h new file mode 100644 index 000000000..9a5008628 --- /dev/null +++ b/src/scalarproduct/gnunet-service-scalarproduct.h | |||
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1 | /* | ||
2 | This file is part of GNUnet. | ||
3 | (C) 2013, 2014 Christian Grothoff (and other contributing authors) | ||
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., 59 Temple Place - Suite 330, | ||
18 | Boston, MA 02111-1307, USA. | ||
19 | */ | ||
20 | /** | ||
21 | * @file scalarproduct/gnunet-service-scalarproduct.h | ||
22 | * @brief scalarproduct service P2P messages | ||
23 | * @author Christian M. Fuchs | ||
24 | * @author Christian Grothoff | ||
25 | */ | ||
26 | #ifndef GNUNET_SERVICE_SCALARPRODUCT_H | ||
27 | #define GNUNET_SERVICE_SCALARPRODUCT_H | ||
28 | |||
29 | /** | ||
30 | * Maximum count of elements we can put into a multipart message | ||
31 | */ | ||
32 | #define MULTIPART_ELEMENT_CAPACITY ((GNUNET_SERVER_MAX_MESSAGE_SIZE - 1 - sizeof (struct MultipartMessage)) / sizeof (struct GNUNET_CRYPTO_PaillierCiphertext)) | ||
33 | |||
34 | |||
35 | GNUNET_NETWORK_STRUCT_BEGIN | ||
36 | |||
37 | /** | ||
38 | * Message type passed from requesting service Alice to responding | ||
39 | * service Bob to initiate a request and make Bob participate in our | ||
40 | * protocol. Afterwards, Bob is expected to perform the set | ||
41 | * intersection with Alice. Once that has succeeded, Alice will | ||
42 | * send a `struct AliceCryptodataMessage *`. Bob is not expected | ||
43 | * to respond via CADET in the meantime. | ||
44 | */ | ||
45 | struct ServiceRequestMessage | ||
46 | { | ||
47 | /** | ||
48 | * Type is #GNUNET_MESSAGE_TYPE_SCALARPRODUCT_SESSION_INITIALIZATION | ||
49 | */ | ||
50 | struct GNUNET_MessageHeader header; | ||
51 | |||
52 | /** | ||
53 | * For alignment. Always zero. | ||
54 | */ | ||
55 | uint32_t reserved; | ||
56 | |||
57 | /** | ||
58 | * The transaction/session key used to identify a session | ||
59 | */ | ||
60 | struct GNUNET_HashCode session_id; | ||
61 | |||
62 | /** | ||
63 | * Alice's public key | ||
64 | */ | ||
65 | struct GNUNET_CRYPTO_PaillierPublicKey public_key; | ||
66 | |||
67 | }; | ||
68 | |||
69 | |||
70 | /** | ||
71 | * Vector of Pallier-encrypted values sent by Alice to Bob | ||
72 | * (after set intersection). Alice may send messages of this | ||
73 | * type repeatedly to transmit all values. | ||
74 | */ | ||
75 | struct AliceCryptodataMessage | ||
76 | { | ||
77 | /** | ||
78 | * Type is #GNUNET_MESSAGE_TYPE_SCALARPRODUCT_ALICE_CRYPTODATA | ||
79 | */ | ||
80 | struct GNUNET_MessageHeader header; | ||
81 | |||
82 | /** | ||
83 | * How many elements we appended to this message? In NBO. | ||
84 | */ | ||
85 | uint32_t contained_element_count GNUNET_PACKED; | ||
86 | |||
87 | /** | ||
88 | * struct GNUNET_CRYPTO_PaillierCiphertext[contained_element_count] | ||
89 | */ | ||
90 | }; | ||
91 | |||
92 | |||
93 | /** | ||
94 | * Message type passed from responding service Bob to responding | ||
95 | * service Alice to complete a request and allow Alice to compute the | ||
96 | * result. If Bob's reply does not fit into this one message, the | ||
97 | * conversation may be continued with `struct MultipartMessage` | ||
98 | * messages afterwards. | ||
99 | */ | ||
100 | struct ServiceResponseMessage | ||
101 | { | ||
102 | /** | ||
103 | * GNUNET message header with type | ||
104 | * #GNUNET_MESSAGE_TYPE_SCALARPRODUCT_BOB_CRYPTODATA. | ||
105 | */ | ||
106 | struct GNUNET_MessageHeader header; | ||
107 | |||
108 | /** | ||
109 | * How many elements the session input had (in NBO). | ||
110 | */ | ||
111 | uint32_t total_element_count GNUNET_PACKED; | ||
112 | |||
113 | /** | ||
114 | * How many elements were included after the mask was applied | ||
115 | * including all multipart msgs (in NBO). | ||
116 | */ | ||
117 | uint32_t used_element_count GNUNET_PACKED; | ||
118 | |||
119 | /** | ||
120 | * How many elements this individual message delivers (in NBO). | ||
121 | */ | ||
122 | uint32_t contained_element_count GNUNET_PACKED; | ||
123 | |||
124 | /** | ||
125 | * The transaction/session key used to identify a session. | ||
126 | * FIXME: needed? CADET should already identify sessions! | ||
127 | */ | ||
128 | struct GNUNET_HashCode key; | ||
129 | |||
130 | /** | ||
131 | * followed by s | s' | k[i][perm] | ||
132 | */ | ||
133 | }; | ||
134 | |||
135 | |||
136 | /** | ||
137 | * Multipart Message type passed between to supply additional elements | ||
138 | * for the peer. Send from Bob to Alice with additional elements | ||
139 | * of k[i][perm] after his `struct ServiceResponseMessage *`. | ||
140 | * Once all k-values have been transmitted, Bob is finished and | ||
141 | * Alice can transmit the final result to the client. | ||
142 | */ | ||
143 | struct MultipartMessage | ||
144 | { | ||
145 | /** | ||
146 | * GNUNET message header | ||
147 | */ | ||
148 | struct GNUNET_MessageHeader header; | ||
149 | |||
150 | /** | ||
151 | * How many elements we supply within this message? In NBO. | ||
152 | */ | ||
153 | uint32_t contained_element_count GNUNET_PACKED; | ||
154 | |||
155 | /** | ||
156 | * struct GNUNET_CRYPTO_PaillierCiphertext[multipart_element_count] | ||
157 | */ | ||
158 | }; | ||
159 | |||
160 | |||
161 | |||
162 | GNUNET_NETWORK_STRUCT_END | ||
163 | |||
164 | |||
165 | #endif | ||