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- skeletons for:

Browse Source 
- prf
	- prf_hmac_sha1
	- hasher
	- hasher_sha1
This commit is contained in:
Martin Willi
2005-11-21 16:26:36 +00:00
parent e0d6093976
commit f0d14d2c56
8 changed files with 516 additions and 0 deletions
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Source/charon/transforms/hashers/hasher.c
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/**
* @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;
}
}
Source/charon/transforms/hashers/hasher.h
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/**
* @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_*/
Source/charon/transforms/hashers/hasher_sha1.c
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/**
* @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);
}
Source/charon/transforms/hashers/hasher_sha1.h
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/**
* @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_*/
Source/charon/transforms/prfs/prf.c
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/**
* @file prf.c
*
* @brief Generic interface for pseudo-random-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 "prf.h"
#include "prf_hmac_sha1.h"
/*
* Described in header
*/
prf_t *prf_create(pseudo_random_function_t pseudo_random_function, chunk_t key)
{
switch (pseudo_random_function)
{
case PRF_HMAC_SHA1:
{
return (prf_t*)prf_hmac_sha1_create(key);
}
case PRF_HMAC_MD5:
case PRF_HMAC_TIGER:
case PRF_AES128_CBC:
default:
return NULL;
}
}
Source/charon/transforms/prfs/prf.h
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/**
* @file prf.h
*
* @brief Generic interface for pseudo-random-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 PRF_H_
#define PRF_H_
#include "../../payloads/transform_substructure.h"
/**
* Object representing a diffie hellman exchange
*/
typedef struct prf_s prf_t;
struct prf_s {
/**
* @brief generates pseudo random bytes and writes them
* in the buffer
*
* @param this calling prf
* @param seed a chunk containing the seed for the next bytes
* @param [out]buffer pointer where the generated bytes will be written
* @return
* - SUCCESS in any case
*/
status_t (*get_bytes) (prf_t *this, chunk_t seed, u_int8_t *buffer);
/**
* @brief generates pseudo random bytes and allocate space for them
*
* @param this calling prf
* @param seed a chunk containing the seed for the next bytes
* @param [out]chunk chunk which will hold generated bytes
* @return
* - SUCCESS in any case
* - OUT_OF_RES if space could not be allocated
*/
status_t (*allocate_bytes) (prf_t *this, chunk_t seed, chunk_t *chunk);
/**
* @brief get the block size of this prf
*
* @param this calling prf
* @return block size in bytes
*/
size_t (*get_block_size) (prf_t *this);
/**
* @brief Destroys a prf object.
*
* @param this prf_t object to destroy
* @return
* SUCCESS in any case
*/
status_t (*destroy) (prf_t *this);
};
/**
* Creates a new prf_t object
*
* @param pseudo_random_function Algorithm to use
* @param key A chunk containing the key
* @return
* - prf_t if successfully
* - NULL if out of ressources or prf not supported
*/
prf_t *prf_create(pseudo_random_function_t pseudo_random_function, chunk_t key);
#endif /*PRF_H_*/
Source/charon/transforms/prfs/prf_hmac_sha1.c
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/**
* @file prf_hmac_sha1.h
*
* @brief Implementation of prf_t interface using the
* HMAC 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 "prf_hmac_sha1.h"
#include "../../utils/allocator.h"
typedef struct private_prf_hmac_sha1_s private_prf_hmac_sha1_t;
struct private_prf_hmac_sha1_s {
/**
* public interface for this prf
*/
prf_hmac_sha1_t public;
};
/*
* Described in header
*/
prf_hmac_sha1_t *prf_hmac_sha1_create(chunk_t key)
{
private_prf_hmac_sha1_t *this = allocator_alloc_thing(private_prf_hmac_sha1_t);
if (this == NULL)
{
return NULL;
}
return &(this->public);
}
Source/charon/transforms/prfs/prf_hmac_sha1.h
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/**
* @file prf_hmac_sha1.h
*
* @brief Implementation of prf_t interface using the
* HMAC 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 PRF_HMAC_SHA1_H_
#define PRF_HMAC_SHA1_H_
#include "prf.h"
#include "../../types.h"
/**
* Object representing a diffie hellman exchange
*
*/
typedef struct prf_hmac_sha1_s prf_hmac_sha1_t;
struct prf_hmac_sha1_s {
/**
* generic prf_t interface for this prf
*/
prf_t prf_interface;
};
/**
* Creates a new prf_hmac_sha1_t object
*
* @param key Key to use for this prf
* @return
* - prf_hmac_sha1_t if successfully
* - NULL if out of ressources
*/
prf_hmac_sha1_t *prf_hmac_sha1_create(chunk_t key);
#endif /*PRF_HMAC_SHA1_H_*/