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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;
61 * Vector of ECC-encrypted values sent by Alice to Bob
62 * (after set intersection). Alice may send messages of this
63 * type repeatedly to transmit all values.
65 struct EccAliceCryptodataMessage
68 * Type is #GNUNET_MESSAGE_TYPE_SCALARPRODUCT_ECC_ALICE_CRYPTODATA
70 struct GNUNET_MessageHeader header;
73 * How many elements we appended to this message? In NBO.
75 uint32_t contained_element_count GNUNET_PACKED;
78 * struct GNUNET_CRYPTO_EccPoint[contained_element_count]
84 * Message type passed from responding service Bob to responding
85 * service Alice to complete a request and allow Alice to compute the
86 * result. If Bob's reply does not fit into this one message, the
87 * conversation may be continued with `struct BobCryptodataMultipartMessage`
88 * messages afterwards.
90 struct EccBobCryptodataMessage
93 * GNUNET message header with type
94 * #GNUNET_MESSAGE_TYPE_SCALARPRODUCT_ECC_BOB_CRYPTODATA.
96 struct GNUNET_MessageHeader header;
99 * How many elements this individual message delivers (in NBO),
102 uint32_t contained_element_count GNUNET_PACKED;
105 * The product of the g_i^{b_i} values.
107 struct GNUNET_CRYPTO_EccPoint prod_g_i_b_i;
110 * The product of the h_i^{b_i} values.
112 struct GNUNET_CRYPTO_EccPoint prod_h_i_b_i;
117 GNUNET_NETWORK_STRUCT_END