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-rw-r--r--Source/charon/utils/randomizer.h122
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diff --git a/Source/charon/utils/randomizer.h b/Source/charon/utils/randomizer.h
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-/**
- * @file randomizer.h
- *
- * @brief Interface of randomizer_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 <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 RANDOMIZER_H_
-#define RANDOMIZER_H_
-
-#include <types.h>
-
-
-/**
- * Default random device used when no device is given.
- */
-#define DEFAULT_RANDOM_DEVICE "/dev/random"
-
-/**
- * Pseudo random device used when no device is given.
- */
-#define DEFAULT_PSEUDO_RANDOM_DEVICE "/dev/urandom"
-
-typedef struct randomizer_t randomizer_t;
-
-/**
- * @brief Class used to get random and pseudo random values.
- *
- * This class is thread save as file system read calls are thread save.
- *
- * @b Constructors:
- * - randomizer_create()
- * - randomizer_create_on_devices()
- *
- * @ingroup utils
- */
-struct randomizer_t {
-
- /**
- * @brief Reads a specific number of bytes from random device.
- *
- * @param this calling randomizer_t object
- * @param bytes number of bytes to read
- * @param[out] buffer pointer to buffer where to write the data in.
- * Size of buffer has to be at least bytes.
- */
- void (*get_random_bytes) (randomizer_t *this,size_t bytes, u_int8_t *buffer);
-
- /**
- * @brief Allocates space and writes in random bytes.
- *
- * @param this calling randomizer_t object
- * @param bytes number of bytes to allocate
- * @param[out] chunk chunk which will hold the allocated random bytes
- */
- void (*allocate_random_bytes) (randomizer_t *this, size_t bytes, chunk_t *chunk);
-
- /**
- * @brief Reads a specific number of bytes from pseudo random device.
- *
- * @param this calling randomizer_t object
- * @param bytes number of bytes to read
- * @param[out] buffer pointer to buffer where to write the data in.
- * size of buffer has to be at least bytes.
- */
- void (*get_pseudo_random_bytes) (randomizer_t *this,size_t bytes, u_int8_t *buffer);
-
- /**
- * @brief Allocates space and writes in pseudo random bytes.
- *
- * @param this calling randomizer_t object
- * @param bytes number of bytes to allocate
- * @param[out] chunk chunk which will hold the allocated random bytes
- */
- void (*allocate_pseudo_random_bytes) (randomizer_t *this, size_t bytes, chunk_t *chunk);
-
- /**
- * @brief Destroys a randomizer_t object.
- *
- * @param this randomizer_t object to destroy
- */
- void (*destroy) (randomizer_t *this);
-};
-
-/**
- * @brief Creates a randomizer_t object
- *
- * @return
- * - created randomizer_t, or
- * - NULL if failed
- *
- * @ingroup utils
- */
-randomizer_t *randomizer_create();
-
-/**
- * @brief Creates an randomizer_t object with specific random device names.
- *
- * @param random_dev_name device name for random values, etc /dev/random
- * @param prandom_dev_name device name for pseudo random values, etc /dev/urandom
- * @return randomizer_t object
- *
- * @ingroup utils
- */
-randomizer_t *randomizer_create_on_devices(char * random_dev_name,char * prandom_dev_name);
-
-#endif /*RANDOMIZER_H_*/