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19 * @file scalarproduct/gnunet-service-scalarproduct-ecc.h
20 * @brief scalarproduct service P2P messages
21 * @author Christian M. Fuchs
22 * @author Christian Grothoff
24 #ifndef GNUNET_SERVICE_SCALARPRODUCT_ECC_H
25 #define GNUNET_SERVICE_SCALARPRODUCT_ECC_H
28 GNUNET_NETWORK_STRUCT_BEGIN
31 * Message type passed from requesting service Alice to responding
32 * service Bob to initiate a request and make Bob participate in our
33 * protocol. Afterwards, Bob is expected to perform the set
34 * intersection with Alice. Once that has succeeded, Alice will
35 * send a `struct AliceCryptodataMessage *`. Bob is not expected
36 * to respond via CADET in the meantime.
38 struct EccServiceRequestMessage
41 * Type is #GNUNET_MESSAGE_TYPE_SCALARPRODUCT_ECC_SESSION_INITIALIZATION
43 struct GNUNET_MessageHeader header;
46 * For alignment. Always zero.
51 * The transaction/session key used to identify a session
53 struct GNUNET_HashCode session_id;
59 * Vector of ECC-encrypted values sent by Alice to Bob
60 * (after set intersection). Alice may send messages of this
61 * type repeatedly to transmit all values.
63 struct EccAliceCryptodataMessage
66 * Type is #GNUNET_MESSAGE_TYPE_SCALARPRODUCT_ECC_ALICE_CRYPTODATA
68 struct GNUNET_MessageHeader header;
71 * How many elements we appended to this message? In NBO.
73 uint32_t contained_element_count GNUNET_PACKED;
76 * struct GNUNET_CRYPTO_EccPoint[contained_element_count]
82 * Message type passed from responding service Bob to responding
83 * service Alice to complete a request and allow Alice to compute the
84 * result. If Bob's reply does not fit into this one message, the
85 * conversation may be continued with `struct BobCryptodataMultipartMessage`
86 * messages afterwards.
88 struct EccBobCryptodataMessage
91 * GNUNET message header with type
92 * #GNUNET_MESSAGE_TYPE_SCALARPRODUCT_ECC_BOB_CRYPTODATA.
94 struct GNUNET_MessageHeader header;
97 * How many elements this individual message delivers (in NBO),
100 uint32_t contained_element_count GNUNET_PACKED;
103 * The product of the g_i^{b_i} values.
105 struct GNUNET_CRYPTO_EccPoint prod_g_i_b_i;
108 * The product of the h_i^{b_i} values.
110 struct GNUNET_CRYPTO_EccPoint prod_h_i_b_i;
115 GNUNET_NETWORK_STRUCT_END