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/*
This file is part of GNUnet. Copyright (C) 2001-2018 Christian Grothoff
(and other contributing authors)
GNUnet is free software: you can redistribute it and/or modify it
under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License,
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
Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file abe/abe.c
* @brief functions for Attribute-Based Encryption
* @author Martin Schanzenbach
*/
#include "platform.h"
#include <zklaim/zklaim.h>
#include "gnunet_crypto_lib.h"
struct GNUNET_ZKLAIM_Context
{
zklaim_ctx* ctx;
gcry_sexp_t priv;
gcry_sexp_t pub;
};
struct GNUNET_ZKLAIM_Payload
{
zklaim_payload pl;
};
struct GNUNET_ZKLAIM_Context*
GNUNET_ZKLAIM_new ()
{
struct GNUNET_ZKLAIM_Context *ctx;
unsigned char *pubbuf;
size_t publen;
ctx = GNUNET_new (struct GNUNET_ZKLAIM_Context);
ctx->ctx = zklaim_context_new();
zklaim_pub2buf(ctx->pub, &pubbuf, &publen);
zklaim_gen_pk(&ctx->priv);
zklaim_get_pub(ctx->priv, &ctx->pub);
if (sizeof(ctx->ctx->pub_key) != publen) {
printf("size mismatch!");
return NULL;
}
memcpy(ctx->ctx->pub_key, pubbuf, sizeof(ctx->ctx->pub_key));
free(pubbuf);
return ctx;
}
int
GNUNET_ZKLAIM_add_payload (struct GNUNET_ZKLAIM_Context *ctx,
struct GNUNET_ZKLAIM_Payload *pl)
{
zklaim_add_pl (ctx->ctx, pl->pl);
return GNUNET_OK;
}
int
GNUNET_ZKLAIM_finalize (struct GNUNET_ZKLAIM_Context *ctx)
{
zklaim_hash_ctx (ctx->ctx);
zklaim_ctx_sign (ctx->ctx, ctx->priv);
return 1;
}
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