diff options
Diffstat (limited to 'Source/charon/transforms/hashers')
| -rw-r--r-- | Source/charon/transforms/hashers/hasher.c | 50 | ||||
| -rw-r--r-- | Source/charon/transforms/hashers/hasher.h | 97 | ||||
| -rw-r--r-- | Source/charon/transforms/hashers/hasher_sha1.c | 59 | ||||
| -rw-r--r-- | Source/charon/transforms/hashers/hasher_sha1.h | 53 |
4 files changed, 259 insertions, 0 deletions
diff --git a/Source/charon/transforms/hashers/hasher.c b/Source/charon/transforms/hashers/hasher.c new file mode 100644 index 000000000..2055824ff --- /dev/null +++ b/Source/charon/transforms/hashers/hasher.c @@ -0,0 +1,50 @@ +/** + * @file hasher.c + * + * @brief Generic interface for hash functions + * + */ + +/* + * 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 <http://www.fsf.org/copyleft/gpl.txt>. + * + * 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 "hasher.h" + +#include "hasher_sha1.h" + + + +/* + * Described in header + */ +hasher_t *hasher_create(hash_algorithm_t hash_algorithm) +{ + switch (hash_algorithm) + { + case SHA1: + { + return (hasher_t*)hasher_sha1_create(); + } + case MD5: + default: + return NULL; + } +} + + + + + diff --git a/Source/charon/transforms/hashers/hasher.h b/Source/charon/transforms/hashers/hasher.h new file mode 100644 index 000000000..24286782d --- /dev/null +++ b/Source/charon/transforms/hashers/hasher.h @@ -0,0 +1,97 @@ +/** + * @file hasher.h + * + * @brief Generic interface for hash functions + * + */ + +/* + * 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 <http://www.fsf.org/copyleft/gpl.txt>. + * + * 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. + */ + +#ifndef HASHER_H_ +#define HASHER_H_ + + +#include "../../types.h" + +/** + * algorithms to use for hashing + */ +typedef enum hash_algorithm_e hash_algorithm_t; + +enum hash_algorithm_e { + SHA1, + MD5 +}; + + +/** + * Object representing a hasher + */ +typedef struct hasher_s hasher_t; + +struct hasher_s { + /** + * @brief hash data and write it in the buffer + * + * @param this calling hasher + * @param data data to hash + * @param [out]buffer pointer where the hash will be written + * @return + * - SUCCESS in any case + */ + status_t (*get_hash) (hasher_t *this, chunk_t data, u_int8_t *buffer); + + /** + * @brief hash data and allocate space for the hash + * + * @param this calling hasher + * @param seed a chunk containing the seed for the next bytes + * @param [out]hash chunk which will hold allocated hash + * @return + * - SUCCESS in any case + * - OUT_OF_RES if space could not be allocated + */ + status_t (*allocate_hash) (hasher_t *this, chunk_t data, chunk_t *hash); + + /** + * @brief get the block size of this hashing function + * + * @param this calling hasher + * @return block size in bytes + */ + size_t (*get_block_size) (hasher_t *this); + + /** + * @brief Destroys a hasher object. + * + * @param this hasher_t object to destroy + * @return + * SUCCESS in any case + */ + status_t (*destroy) (hasher_t *this); +}; + +/** + * Creates a new hasher_t object + * + * @param hash_algorithm Algorithm to use for hashing + * @return + * - hasher_t if successfully + * - NULL if out of ressources + */ +hasher_t *hasher_create(hash_algorithm_t hash_algorithm); + +#endif /*HASHER_H_*/ diff --git a/Source/charon/transforms/hashers/hasher_sha1.c b/Source/charon/transforms/hashers/hasher_sha1.c new file mode 100644 index 000000000..9a9df501f --- /dev/null +++ b/Source/charon/transforms/hashers/hasher_sha1.c @@ -0,0 +1,59 @@ +/** + * @file hasher_sha1.c + * + * @brief Implementation of hasher_t interface using the + * SHA1 algorithm. + * + */ + +/* + * 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 <http://www.fsf.org/copyleft/gpl.txt>. + * + * 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 "hasher_sha1.h" + +#include "../../utils/allocator.h" + +typedef struct private_hasher_sha1_s private_hasher_sha1_t; + +struct private_hasher_sha1_s { + /** + * public interface for this hasher + */ + hasher_sha1_t public; +}; + + + + + +/* + * Described in header + */ +hasher_sha1_t *hasher_sha1_create() +{ + private_hasher_sha1_t *this = allocator_alloc_thing(private_hasher_sha1_t); + + if (this == NULL) + { + return NULL; + } + + return &(this->public); +} + + + + + diff --git a/Source/charon/transforms/hashers/hasher_sha1.h b/Source/charon/transforms/hashers/hasher_sha1.h new file mode 100644 index 000000000..c76f69ea5 --- /dev/null +++ b/Source/charon/transforms/hashers/hasher_sha1.h @@ -0,0 +1,53 @@ +/** + * @file hasher_sha1.h + * + * @brief Implementation of hasher_t interface using the + * SHA1 algorithm. + * + */ + +/* + * 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 <http://www.fsf.org/copyleft/gpl.txt>. + * + * 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. + */ + +#ifndef HASHER_SHA1_H_ +#define HASHER_SHA1_H_ + +#include "hasher.h" + + +/** + * Object representing the sha1 hasher + * + */ +typedef struct hasher_sha1_s hasher_sha1_t; + +struct hasher_sha1_s { + + /** + * generic hasher_t interface for this hasher + */ + hasher_t hasher_interface; +}; + +/** + * Creates a new hasher_sha1_t object + * + * @return + * - hasher_sha1_t if successfully + * - NULL if out of ressources + */ +hasher_sha1_t *hasher_sha1_create(); + +#endif /*HASHER_SHA1_H_*/ |