85 lines
2.2 KiB
C
85 lines
2.2 KiB
C
/**
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* @file prf_plus.h
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*
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* @brief Implements the prf+ function described in IKEv2 draft.
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*
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*/
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/*
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* Copyright (C) 2005 Jan Hutter, Martin Willi
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* Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#ifndef PRF_PLUS_H_
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#define PRF_PLUS_H_
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#include <transforms/prfs/prf.h>
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typedef struct prf_plus_t prf_plus_t;
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/**
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* Object representing a prf_plus
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*/
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struct prf_plus_t {
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/**
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* @brief Get pseudo random bytes.
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*
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* @param this calling prf_plus
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* @param length number of bytes to get
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* @param [out]buffer pointer where the generated bytes will be written
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* @return
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* - SUCCESS in any case
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*/
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status_t (*get_bytes) (prf_plus_t *this, size_t length, u_int8_t *buffer);
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/**
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* @brief Allocate pseudo random bytes.
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*
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* @param this calling prf_plus
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* @param length number of bytes to get
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* @param [out]chunk chunk which will hold generated bytes
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* @return
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* - SUCCESS in any case
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* - OUT_OF_RES if space could not be allocated
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*/
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status_t (*allocate_bytes) (prf_plus_t *this, size_t length, chunk_t *chunk);
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/**
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* @brief Destroys a prf_plus object.
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*
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* @param this prf_plus_t object to destroy
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* @return
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* - SUCCESS in any case
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*/
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status_t (*destroy) (prf_plus_t *this);
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};
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/**
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* Creates a new prf_plus_t object
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*
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* Seed will be cloned. prf will
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* not be cloned, must be destroyed outside after
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* prf_plus usage.
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*
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* @param prf prf object to use
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* @param seed input seed for prf
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* @return
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* - prf_plus_t if successfully
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* - NULL if out of ressources or hash not supported
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*/
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prf_plus_t *prf_plus_create(prf_t *prf, chunk_t seed);
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#endif /*PRF_PLUS_H_*/
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