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/*
* Copyright (c) 2010-2012 United States Government, as represented by
* the Secretary of Defense. All rights reserved.
*
* based off of the original tools/vtpm_manager code base which is:
* Copyright (c) 2005, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef VTPM_STORAGE_H
#define VTPM_STORAGE_h
#include "uuid.h"
#define VTPM_NVMKEY_SIZE 32
#define HASHKEYSZ (sizeof(TPM_DIGEST) + VTPM_NVMKEY_SIZE)
/* Initialize the storage system and its virtual disk */
int vtpm_storage_init(void);
/* Shutdown the storage system and its virtual disk */
void vtpm_storage_shutdown(void);
/* Loads Sha1 hash and 256 bit AES key from disk and stores them
* packed together in outbuf. outbuf must be freed
* by the caller using buffer_free()
*/
TPM_RESULT vtpm_storage_load_hashkey(const uuid_t uuid, uint8_t hashkey[HASHKEYSZ]);
/* inbuf must contain a sha1 hash followed by a 256 bit AES key.
* Encrypts and stores the hash and key to disk */
TPM_RESULT vtpm_storage_save_hashkey(const uuid_t uuid, uint8_t hashkey[HASHKEYSZ]);
/* Load the vtpm manager data - call this on startup */
TPM_RESULT vtpm_storage_load_header(void);
/* Saves the vtpm manager data - call this on shutdown */
TPM_RESULT vtpm_storage_new_header(void);
#endif
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