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add key-share generation

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This commit is contained in:
Markus Teich 2016-06-20 00:47:20 +02:00
parent 6824ebe008
commit cbb4714027
2 changed files with 21 additions and 2 deletions
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14
crypto.c
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@ -425,6 +425,20 @@ smc_compute_pkey (struct AuctionData *ad)
} }
void
smc_gen_keyshare (struct AuctionData *ad)
{
uint16_t i;
ad->y = calloc(ad->n, sizeof(*ad->y));
for (i = 0; i < ad->n; i++)
ad->y[0] = gcry_mpi_point_new (0);
ad->x = gcry_mpi_new (0);
ec_keypair_create (ad->y[ad->i], ad->x);
}
/** /**
* smc_zkp_dl * smc_zkp_dl
* *

9
crypto.h
View File

@ -25,6 +25,8 @@
#include <gcrypt.h> #include <gcrypt.h>
#include <stdint.h> #include <stdint.h>
#include "internals.h"
void brandt_crypto_init (); void brandt_crypto_init ();
@ -64,8 +66,6 @@ void ec_keypair_create_base (gcry_mpi_point_t pkey,
const gcry_mpi_point_t base); const gcry_mpi_point_t base);
/* --- Zero knowledge proofs --- */ /* --- Zero knowledge proofs --- */
void smc_zkp_dl (const gcry_mpi_point_t v, void smc_zkp_dl (const gcry_mpi_point_t v,
@ -124,4 +124,9 @@ int smc_zkp_0og_check (const gcry_mpi_point_t alpha,
const gcry_mpi_t r1, const gcry_mpi_t r1,
const gcry_mpi_t r2); const gcry_mpi_t r2);
/* --- Protocol implementation --- */
void smc_gen_keyshare (struct AuctionData *ad);
void smc_compute_pkey (struct AuctionData *ad);
#endif /* ifndef _BRANDT_CRYPTO_H */ #endif /* ifndef _BRANDT_CRYPTO_H */