--- /dev/null
+/**
+ * @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;
+ }
+}
+
+
+
+
+
--- /dev/null
+/**
+ * @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_*/
--- /dev/null
+/**
+ * @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);
+}
+
+
+
+
+
--- /dev/null
+/**
+ * @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_*/
--- /dev/null
+/**
+ * @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;
+ }
+}
+
+
+
+
+
--- /dev/null
+/**
+ * @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_*/
--- /dev/null
+/**
+ * @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);
+
+}
+
+
+
+
+
--- /dev/null
+/**
+ * @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_*/
projects / strongswan.git / commitdiff