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authorChristian Grothoff <christian@grothoff.org>2015-09-05 18:03:58 +0000
committerChristian Grothoff <christian@grothoff.org>2015-09-05 18:03:58 +0000
commit14f9ba0d86025dfd2defb1635899c75da4815d16 (patch)
treed88c4404b496a1fc27fc0c4b6239c5ec4aee4510 /src/scalarproduct/gnunet-service-scalarproduct-ecc.h
parent29ee3958cd75cf5f91846f8235278061e6c9309f (diff)
-towards ECC variant of SP
Diffstat (limited to 'src/scalarproduct/gnunet-service-scalarproduct-ecc.h')
-rw-r--r--src/scalarproduct/gnunet-service-scalarproduct-ecc.h120
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diff --git a/src/scalarproduct/gnunet-service-scalarproduct-ecc.h b/src/scalarproduct/gnunet-service-scalarproduct-ecc.h
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+/*
+ This file is part of GNUnet.
+ Copyright (C) 2015 Christian Grothoff (and other contributing authors)
+
+ GNUnet is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 3, or (at your
+ option) any later version.
+
+ GNUnet is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with GNUnet; see the file COPYING. If not, write to the
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
+ */
+/**
+ * @file scalarproduct/gnunet-service-scalarproduct-ecc.h
+ * @brief scalarproduct service P2P messages
+ * @author Christian M. Fuchs
+ * @author Christian Grothoff
+ */
+#ifndef GNUNET_SERVICE_SCALARPRODUCT_ECC_H
+#define GNUNET_SERVICE_SCALARPRODUCT_ECC_H
+
+
+GNUNET_NETWORK_STRUCT_BEGIN
+
+/**
+ * Message type passed from requesting service Alice to responding
+ * service Bob to initiate a request and make Bob participate in our
+ * protocol. Afterwards, Bob is expected to perform the set
+ * intersection with Alice. Once that has succeeded, Alice will
+ * send a `struct AliceCryptodataMessage *`. Bob is not expected
+ * to respond via CADET in the meantime.
+ */
+struct EccServiceRequestMessage
+{
+ /**
+ * Type is #GNUNET_MESSAGE_TYPE_SCALARPRODUCT_ECC_SESSION_INITIALIZATION
+ */
+ struct GNUNET_MessageHeader header;
+
+ /**
+ * For alignment. Always zero.
+ */
+ uint32_t reserved;
+
+ /**
+ * The transaction/session key used to identify a session
+ */
+ struct GNUNET_HashCode session_id;
+
+};
+
+
+/**
+ * Vector of ECC-encrypted values sent by Alice to Bob
+ * (after set intersection). Alice may send messages of this
+ * type repeatedly to transmit all values.
+ */
+struct EccAliceCryptodataMessage
+{
+ /**
+ * Type is #GNUNET_MESSAGE_TYPE_SCALARPRODUCT_ECC_ALICE_CRYPTODATA
+ */
+ struct GNUNET_MessageHeader header;
+
+ /**
+ * How many elements we appended to this message? In NBO.
+ */
+ uint32_t contained_element_count GNUNET_PACKED;
+
+ /**
+ * struct GNUNET_CRYPTO_EccPoint[contained_element_count]
+ */
+};
+
+
+/**
+ * Message type passed from responding service Bob to responding
+ * service Alice to complete a request and allow Alice to compute the
+ * result. If Bob's reply does not fit into this one message, the
+ * conversation may be continued with `struct BobCryptodataMultipartMessage`
+ * messages afterwards.
+ */
+struct EccBobCryptodataMessage
+{
+ /**
+ * GNUNET message header with type
+ * #GNUNET_MESSAGE_TYPE_SCALARPRODUCT_ECC_BOB_CRYPTODATA.
+ */
+ struct GNUNET_MessageHeader header;
+
+ /**
+ * How many elements this individual message delivers (in NBO),
+ * always TWO.
+ */
+ uint32_t contained_element_count GNUNET_PACKED;
+
+ /**
+ * The product of the g_i^{b_i} values.
+ */
+ struct GNUNET_CRYPTO_EccPoint prod_g_i_b_i;
+
+ /**
+ * The product of the h_i^{b_i} values.
+ */
+ struct GNUNET_CRYPTO_EccPoint prod_h_i_b_i;
+
+};
+
+
+GNUNET_NETWORK_STRUCT_END
+
+
+#endif