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21 * @file scalarproduct/gnunet-service-scalarproduct-ecc.h
22 * @brief scalarproduct service P2P messages
23 * @author Christian M. Fuchs
24 * @author Christian Grothoff
26 #ifndef GNUNET_SERVICE_SCALARPRODUCT_ECC_H
27 #define GNUNET_SERVICE_SCALARPRODUCT_ECC_H
30 GNUNET_NETWORK_STRUCT_BEGIN
33 * Message type passed from requesting service Alice to responding
34 * service Bob to initiate a request and make Bob participate in our
35 * protocol. Afterwards, Bob is expected to perform the set
36 * intersection with Alice. Once that has succeeded, Alice will
37 * send a `struct AliceCryptodataMessage *`. Bob is not expected
38 * to respond via CADET in the meantime.
40 struct EccServiceRequestMessage
43 * Type is #GNUNET_MESSAGE_TYPE_SCALARPRODUCT_ECC_SESSION_INITIALIZATION
45 struct GNUNET_MessageHeader header;
48 * For alignment. Always zero.
53 * The transaction/session key used to identify a session
55 struct GNUNET_HashCode session_id;
60 * Vector of ECC-encrypted values sent by Alice to Bob
61 * (after set intersection). Alice may send messages of this
62 * type repeatedly to transmit all values.
64 struct EccAliceCryptodataMessage
67 * Type is #GNUNET_MESSAGE_TYPE_SCALARPRODUCT_ECC_ALICE_CRYPTODATA
69 struct GNUNET_MessageHeader header;
72 * How many elements we appended to this message? In NBO.
74 uint32_t contained_element_count GNUNET_PACKED;
77 * struct GNUNET_CRYPTO_EccPoint[contained_element_count]
83 * Message type passed from responding service Bob to responding
84 * service Alice to complete a request and allow Alice to compute the
85 * result. If Bob's reply does not fit into this one message, the
86 * conversation may be continued with `struct BobCryptodataMultipartMessage`
87 * messages afterwards.
89 struct EccBobCryptodataMessage
92 * GNUNET message header with type
93 * #GNUNET_MESSAGE_TYPE_SCALARPRODUCT_ECC_BOB_CRYPTODATA.
95 struct GNUNET_MessageHeader header;
98 * How many elements this individual message delivers (in NBO),
101 uint32_t contained_element_count GNUNET_PACKED;
104 * The product of the g_i^{b_i} values.
106 struct GNUNET_CRYPTO_EccPoint prod_g_i_b_i;
109 * The product of the h_i^{b_i} values.
111 struct GNUNET_CRYPTO_EccPoint prod_h_i_b_i;
115 GNUNET_NETWORK_STRUCT_END