f4932d94c0
The hash is not needed since the sellers application is required to sign the description and the bidders application is required to check the signature. Since the arbitrary description used by the application was only used inside this hash, it can be removed as well.
158 lines
4.9 KiB
C
158 lines
4.9 KiB
C
/* This file is part of libbrandt.
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* Copyright (C) 2016 GNUnet e.V.
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*
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* libbrandt is free software: you can redistribute it and/or modify it under
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* the terms of the GNU General Public License as published by the Free Software
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* Foundation, either version 3 of the License, or (at your option) any later
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* version.
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*
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* libbrandt is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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* A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* libbrandt. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file internals.h
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* @brief This header contains library internal structs.
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* @author Markus Teich
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*/
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#ifndef _BRANDT_INTERNALS_H
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#define _BRANDT_INTERNALS_H
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#include <gcrypt.h>
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#include "brandt.h"
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enum rounds {
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msg_init = 0,
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msg_bid = 1,
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msg_outcome = 2,
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msg_decrypt = 3,
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msg_last = 4
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};
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enum auction_type {
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auction_firstPrice = 0,
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auction_mPlusFirstPrice = 1,
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auction_last = 2
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};
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enum outcome_type {
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outcome_private = 0,
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outcome_public = 1,
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outcome_last = 2
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};
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GNUNET_NETWORK_STRUCT_BEGIN
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struct msg_head {
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uint32_t prot_version GNUNET_PACKED;
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uint32_t msg_type GNUNET_PACKED;
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};
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/**
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* This struct describes the parameters of an auction. All fields are stored in
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* network byte order.
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*/
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struct BRANDT_DescrP {
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/** Starting time of the auction. Bidders have to join the auction via
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* BRANDT_join until this time */
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struct GNUNET_TIME_AbsoluteNBO time_start;
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/** The maximum duration the participants have to complete each round. */
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struct GNUNET_TIME_RelativeNBO time_round;
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/** The amount of possible prices */
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uint16_t k GNUNET_PACKED;
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/** Auction type. 0 means first price Auction, >= 0 means M+1st price
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* auction with an amount of m items being sold. */
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uint16_t m GNUNET_PACKED;
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/** Outcome type. 0 means private outcome, everything else means public
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* outcome. */
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uint16_t outcome_public GNUNET_PACKED;
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/** reserved for future use. Must be zeroed out. */
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uint16_t reserved GNUNET_PACKED;
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};
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GNUNET_NETWORK_STRUCT_END
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struct BRANDT_Auction {
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/** Starting time of the auction. Bidders have to join the auction via
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* BRANDT_join until this time */
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struct GNUNET_TIME_Absolute time_start;
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/** The maximum duration the participants have to complete each round. */
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struct GNUNET_TIME_Relative time_round;
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/** Auction type. 0 means first price Auction, >= 0 means M+1st price
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* auction with an amount of m items being sold. */
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uint16_t m;
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/** Outcome type. 0 means private outcome, everything else means public
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* outcome. */
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uint16_t outcome_public;
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/** Link to the next delayed task (auction start trigger, round trigger) */
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struct GNUNET_SCHEDULER_Task *task;
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void *closure; /** auction closure given by the user */
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BRANDT_CbResult result; /** result reporting callback */
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BRANDT_CbBroadcast bcast; /** broadcast callback */
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BRANDT_CbUnicast ucast; /** unicast callback */
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BRANDT_CbStart start; /** start callback */
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int seller_mode; /** If 0 we are bidding, selling otherwise */
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enum rounds cur_round; /** The round we expect messages from */
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gcry_mpi_t round_progress; /** Stores which round messages were received */
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uint16_t n; /** The amount of bidders/agents */
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uint16_t k; /** The amount of possible prices */
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uint16_t i; /** Own agents index, only used when bidding */
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uint16_t b; /** Own bid */
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gcry_mpi_t x; /** Own private additive key share */
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gcry_mpi_point_t *y; /** public multiplicative key shares, size: n */
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gcry_mpi_point_t Y; /** Shared public key */
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gcry_mpi_point_t **alpha; /** alphas, size: n*k */
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gcry_mpi_point_t **beta; /** betas, size: n*k */
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gcry_mpi_point_t **gamma2; /** gamma2, for public outcome, size: n*k */
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gcry_mpi_point_t ***gamma3; /** gamma3, for private outcome, size: n*n*k */
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gcry_mpi_point_t **delta2; /** delta2, for public outcome, size: n*k */
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gcry_mpi_point_t ***delta3; /** delta3, for private outcome, size: n*n*k */
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gcry_mpi_point_t **phi2; /** phi2, for public outcome, size: n*k */
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gcry_mpi_point_t ***phi3; /** phi3, for private outcome, size: n*n*k */
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/** proofs for the correctnes of the phi values, size: n*k */
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struct proof_2dle ***phiproofs2;
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/** proofs for the correctnes of the phi values, size: n*n*k */
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struct proof_2dle ***phiproofs3;
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gcry_mpi_point_t *tmpa1; /** used for temporary storage, size: k */
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gcry_mpi_point_t *tmpb1; /** used for temporary storage, size: k */
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};
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extern gcry_ctx_t ec_ctx;
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extern gcry_mpi_point_t ec_gen;
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extern gcry_mpi_point_t ec_zero;
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extern gcry_mpi_t ec_n;
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extern struct GNUNET_CRYPTO_EccDlogContext *ec_dlogctx;
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#endif /* ifndef _BRANDT_INTERNALS_H */
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