From 61068e9152c93365887d7b137c49e34ecb05cc29 Mon Sep 17 00:00:00 2001 From: Jan Hutter Date: Mon, 28 Nov 2005 12:56:40 +0000 Subject: - changed prf_hmac_t to hmac_prf_t --- Source/charon/transforms/prfs/hmac_prf.c | 111 +++++++++++++++++++++++++++++++ 1 file changed, 111 insertions(+) create mode 100644 Source/charon/transforms/prfs/hmac_prf.c (limited to 'Source/charon/transforms/prfs/hmac_prf.c') diff --git a/Source/charon/transforms/prfs/hmac_prf.c b/Source/charon/transforms/prfs/hmac_prf.c new file mode 100644 index 000000000..17f60650c --- /dev/null +++ b/Source/charon/transforms/prfs/hmac_prf.c @@ -0,0 +1,111 @@ +/** + * @file hmac_prf.c + * + * @brief Implementation for hmac_prf_t. + * + */ + +/* + * Copyright (C) 2005 Jan Hutter, Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See . + * + * This program 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 General Public License + * for more details. + */ + +#include "hmac_prf.h" + +#include +#include + +typedef struct private_hmac_prf_t private_hmac_prf_t; + +struct private_hmac_prf_t { + /** + * public interface for this prf + */ + hmac_prf_t public; + + /** + * hmac to use for generation + */ + hmac_t *hmac; +}; + +/** + * implementation of prf_t.get_bytes + */ +static status_t get_bytes(private_hmac_prf_t *this, chunk_t seed, u_int8_t *buffer) +{ + return this->hmac->get_mac(this->hmac, seed, buffer); +} + +/** + * implementation of prf_t.allocate_bytes + */ +static status_t allocate_bytes(private_hmac_prf_t *this, chunk_t seed, chunk_t *chunk) +{ + return this->hmac->allocate_mac(this->hmac, seed, chunk); +} + +/** + * implementation of prf_t.get_block_size + */ +static size_t get_block_size(private_hmac_prf_t *this) +{ + return this->hmac->get_block_size(this->hmac); +} + +/** + * implementation of prf_t.set_key + */ +static status_t set_key(private_hmac_prf_t *this, chunk_t key) +{ + this->hmac->set_key(this->hmac, key); + return SUCCESS; +} + +/** + * implementation of prf_t.destroy + */ +static status_t destroy(private_hmac_prf_t *this) +{ + allocator_free(this); + this->hmac->destroy(this->hmac); + return SUCCESS; +} + +/* + * Described in header + */ +hmac_prf_t *hmac_prf_create(hash_algorithm_t hash_algorithm) +{ + private_hmac_prf_t *this = allocator_alloc_thing(private_hmac_prf_t); + + if (this == NULL) + { + return NULL; + } + + this->public.prf_interface.get_bytes = (status_t (*) (prf_t *,chunk_t,u_int8_t*))get_bytes; + this->public.prf_interface.allocate_bytes = (status_t (*) (prf_t*,chunk_t,chunk_t*))allocate_bytes; + this->public.prf_interface.get_block_size = (size_t (*) (prf_t*))get_block_size; + this->public.prf_interface.set_key = (status_t (*) (prf_t *,chunk_t))set_key; + this->public.prf_interface.destroy = (status_t (*) (prf_t *))destroy; + + this->hmac = hmac_create(hash_algorithm); + if (this->hmac == NULL) + { + allocator_free(this); + return NULL; + } + + return &(this->public); +} -- cgit v1.2.3