72 lines
1.9 KiB
C
72 lines
1.9 KiB
C
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/* 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 crypto.h
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* @brief Interface of the crypto primitives.
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*/
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#ifndef _BRANDT_CRYPTO_H
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#define _BRANDT_CRYPTO_H
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#include <gcrypt.h>
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#include <stdint.h>
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/* --- RANDOM --- */
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void brandt_rand_poll ();
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/* --- HASHING --- */
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struct brandt_hash_code {
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uint32_t bits[512 / 8 / sizeof (uint32_t)]; /* = 16 */
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};
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void brandt_hash (const void *block, size_t size, struct brandt_hash_code *ret);
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/* --- MPI --- */
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void brandt_mpi_print_unsigned (void *buf, size_t size, gcry_mpi_t val);
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void brandt_mpi_scan_unsigned (gcry_mpi_t *result, const void *data,
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size_t size);
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/* --- ECDHE --- */
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struct brandt_dhe_skey {
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unsigned char d[256 / 8];
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};
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struct brandt_dhe_pkey {
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unsigned char q_y[256 / 8];
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};
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void brandt_ecdhe_key_create (struct brandt_dhe_skey *priv);
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void brandt_ecdhe_key_get_public (const struct brandt_dhe_skey *priv,
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struct brandt_dhe_pkey *pub);
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int brandt_ecdhe (const struct brandt_dhe_skey *priv,
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const struct brandt_dhe_pkey *pub,
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struct brandt_hash_code *key_material);
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void brandt_ecdhe_key_clear (struct brandt_dhe_skey *priv);
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#endif /* ifndef _BRANDT_CRYPTO_H */
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