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move ecdlogctx passing to _join()/_new() functions

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This commit is contained in:
Markus Teich 2016-12-02 12:53:54 +01:00
parent 64689a9083
commit e66cbbe44f
8 changed files with 90 additions and 61 deletions
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30
brandt.c
View File

@ -28,7 +28,7 @@
void
BRANDT_init (struct GNUNET_CRYPTO_EccDlogContext *dlogctx)
BRANDT_init ()
{
gcry_error_t err = 0;
@ -56,7 +56,7 @@ BRANDT_init (struct GNUNET_CRYPTO_EccDlogContext *dlogctx)
gcry_strerror (err));
gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
brandt_crypto_init (dlogctx);
brandt_crypto_init ();
}
@ -194,7 +194,8 @@ BRANDT_new (BRANDT_CbResult result,
struct GNUNET_TIME_Relative time_round,
uint16_t num_prices,
uint16_t m,
int outcome_public)
int outcome_public,
struct GNUNET_CRYPTO_EccDlogContext *dlogctx)
{
struct BRANDT_Auction *ret;
struct BRANDT_DescrP *desc;
@ -208,6 +209,14 @@ BRANDT_new (BRANDT_CbResult result,
return NULL;
}
if (1 == outcome_public && NULL == dlogctx)
{
GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
"libbrandt",
"need dlogctx for public outcome auctions\n");
return NULL;
}
desc = GNUNET_new (struct BRANDT_DescrP);
desc->time_start = GNUNET_TIME_absolute_hton (time_start);
desc->time_round = GNUNET_TIME_relative_hton (time_round);
@ -223,6 +232,7 @@ BRANDT_new (BRANDT_CbResult result,
ret->outcome_public = outcome_public;
ret->cur_round = msg_init;
ret->round_progress = gcry_mpi_new (256);
ret->dlogctx = dlogctx;
/* we are the seller */
ret->seller_mode = 1;
@ -294,7 +304,8 @@ BRANDT_join (BRANDT_CbResult result,
void *auction_closure,
const void *auction_desc,
size_t auction_desc_len,
uint16_t bid)
uint16_t bid,
struct GNUNET_CRYPTO_EccDlogContext *dlogctx)
{
struct BRANDT_Auction *ret = GNUNET_new (struct BRANDT_Auction);
@ -312,9 +323,20 @@ BRANDT_join (BRANDT_CbResult result,
"failed to parse auction description blob\n");
return NULL;
}
if (1 == ret->outcome_public && NULL == dlogctx)
{
GNUNET_free (ret);
GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
"libbrandt",
"need dlogctx for public outcome auctions\n");
return NULL;
}
ret->cur_round = msg_init;
ret->round_progress = gcry_mpi_new (256);
ret->b = bid;
ret->dlogctx = dlogctx;
/* we are the seller */
ret->seller_mode = 0;

12
brandt.h
View File

@ -108,7 +108,7 @@ typedef void
void
BRANDT_init (struct GNUNET_CRYPTO_EccDlogContext *dlogctx);
BRANDT_init ();
/**
@ -149,6 +149,8 @@ BRANDT_parse_desc (const void *auction_desc,
* @param[in] auction_desc_len The length in byte of the @a auction_desc
* structure.
* @param[in] bid How much to bid on this auction.
* @param[in] dlogctx The discrete log context obtained from
* GNUNET_CRYPTO_ecc_dlog_prepare(). Only needed for M+1st price auctions.
* @return A pointer, which should only be remembered and passed to
* libbrandt functions when the client needs to refer to this auction. This is a
* black-box pointer, do NOT dereference/change it or the data it points to!
@ -160,7 +162,8 @@ BRANDT_join (BRANDT_CbResult result,
void *auction_closure,
const void *auction_desc,
size_t auction_desc_len,
uint16_t bid);
uint16_t bid,
struct GNUNET_CRYPTO_EccDlogContext *dlogctx);
/* \todo: have cancellation (BRANDT_join_cancel()) */
@ -190,6 +193,8 @@ BRANDT_join (BRANDT_CbResult result,
* @param[in] outcome_public If 1, the auction winner and price will be public
* to all participants, if 0, this information will only be revealed to the
* winner and the seller.
* @param[in] dlogctx The discrete log context obtained from
* GNUNET_CRYPTO_ecc_dlog_prepare(). Only needed for M+1st price auctions.
* @return If invalid parameters are passed, NULL is returned. Else the return
* value is a pointer, which should only be remembered and passed to
* libbrandt functions when the client needs to refer to this auction. This is a
@ -206,7 +211,8 @@ BRANDT_new (BRANDT_CbResult result,
struct GNUNET_TIME_Relative time_round,
uint16_t num_prices,
uint16_t m,
int outcome_public);
int outcome_public,
struct GNUNET_CRYPTO_EccDlogContext *dlogctx);
/**

5
crypto.c
View File

@ -81,7 +81,6 @@ gcry_ctx_t ec_ctx = NULL;
gcry_mpi_point_t ec_gen = NULL;
gcry_mpi_point_t ec_zero = NULL;
gcry_mpi_t ec_n = NULL;
struct GNUNET_CRYPTO_EccDlogContext *ec_dlogctx = NULL;
/**
@ -91,12 +90,10 @@ struct GNUNET_CRYPTO_EccDlogContext *ec_dlogctx = NULL;
* @param[in] dlogctx Pointer to the prepared dlog context.
*/
void
brandt_crypto_init (struct GNUNET_CRYPTO_EccDlogContext *dlogctx)
brandt_crypto_init ()
{
gcry_error_t rc;
ec_dlogctx = dlogctx;
rc = gcry_mpi_ec_new (&ec_ctx, NULL, CURVE);
ASSERT_GCRY ("gcry_mpi_ec_new", rc);

2
crypto.h
View File

@ -30,7 +30,7 @@
#include "internals.h"
void brandt_crypto_init (struct GNUNET_CRYPTO_EccDlogContext *dlogctx);
void brandt_crypto_init ();
/* --- EC --- */

2
fp_pub.c
View File

@ -412,7 +412,7 @@ fp_pub_determine_outcome (struct BRANDT_Auction *ad,
}
}
dlogi = GNUNET_CRYPTO_ecc_dlog (ec_dlogctx, sum_gamma);
dlogi = GNUNET_CRYPTO_ecc_dlog (ad->dlogctx, sum_gamma);
brandt_assert (dlogi > 0);
/* all bidders participated with a multiplicative share */

4
internals.h
View File

@ -146,12 +146,14 @@ struct BRANDT_Auction {
gcry_mpi_point_t *tmpa1; /** used for temporary storage, size: k */
gcry_mpi_point_t *tmpb1; /** used for temporary storage, size: k */
/** only needed in M+1st price auctions to determine winners */
struct GNUNET_CRYPTO_EccDlogContext *dlogctx;
};
extern gcry_ctx_t ec_ctx;
extern gcry_mpi_point_t ec_gen;
extern gcry_mpi_point_t ec_zero;
extern gcry_mpi_t ec_n;
extern struct GNUNET_CRYPTO_EccDlogContext *ec_dlogctx;
#endif /* ifndef _BRANDT_INTERNALS_H */

2
mp_pub.c
View File

@ -486,7 +486,7 @@ mp_pub_determine_outcome (struct BRANDT_Auction *ad,
smc_sum (sum_phi, &ad->phi3[0][1][price], ad->n, 2 * ad->k);
gcry_mpi_ec_sub (sum_gamma, sum_gamma, sum_phi, ec_ctx);
dlogi = GNUNET_CRYPTO_ecc_dlog (ec_dlogctx, sum_gamma);
dlogi = GNUNET_CRYPTO_ecc_dlog (ad->dlogctx, sum_gamma);
brandt_assert (dlogi > 0);
/* all bidders participated with a multiplicative share */

10
test_brandt.c
View File

@ -51,6 +51,7 @@ struct testcase {
static struct testcase tcase;
static struct GNUNET_CRYPTO_EccDlogContext *edc;
static struct BRANDT_Result *
@ -330,7 +331,8 @@ run_auction (void *arg)
GNUNET_TIME_UNIT_MINUTES,
tcase.k, /* number of prizes */
tcase.m, /* m */
tcase.outcome_public); /* outcome public */
tcase.outcome_public, /* outcome public */
tcase.outcome_public ? edc : NULL);
if (!tcase.ad[tcase.n])
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "BRANDT_new() failed.\n");
@ -345,7 +347,8 @@ run_auction (void *arg)
&tcase.id[i],
desc,
desc_len,
tcase.bids[i]); /* bid */
tcase.bids[i], /* bid */
tcase.outcome_public ? edc : NULL);
if (!tcase.ad[i])
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "BRANDT_join() failed.\n");
@ -440,13 +443,12 @@ int
main (int argc, char *argv[])
{
int ret = 0;
struct GNUNET_CRYPTO_EccDlogContext *edc;
if (GNUNET_OK != GNUNET_log_setup ("test_brandt", "WARNING", NULL))
return 1;
edc = GNUNET_CRYPTO_ecc_dlog_prepare (1024, 16);
BRANDT_init (edc);
BRANDT_init ();
ret |= 0 ||
// zero bidders