source: trunk/packages/xen-common/xen-common/tools/vtpm_manager/crypto/sym_crypto.h @ 95

Last change on this file since 95 was 34, checked in by hartmans, 18 years ago

Add xen and xen-common

  • Property svn:mime-type set to text/cpp
File size: 2.7 KB
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1// ===================================================================
2//
3// Copyright (c) 2005, Intel Corp.
4// All rights reserved.
5//
6// Redistribution and use in source and binary forms, with or without
7// modification, are permitted provided that the following conditions
8// are met:
9//
10//   * Redistributions of source code must retain the above copyright
11//     notice, this list of conditions and the following disclaimer.
12//   * Redistributions in binary form must reproduce the above
13//     copyright notice, this list of conditions and the following
14//     disclaimer in the documentation and/or other materials provided
15//     with the distribution.
16//   * Neither the name of Intel Corporation nor the names of its
17//     contributors may be used to endorse or promote products derived
18//     from this software without specific prior written permission.
19//
20// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
24// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
25// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
26// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
27// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
29// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
31// OF THE POSSIBILITY OF SUCH DAMAGE.
32// ===================================================================
33//
34// sym_crypto.h
35//
36//     Symmetric Crypto
37//
38// ==================================================================
39
40#ifndef _SYM_CRYPTO_H
41#define _SYM_CRYPTO_H
42
43#include <openssl/evp.h>
44#include "buffer.h"
45
46typedef struct symkey_t {
47  buffer_t key;
48 
49  EVP_CIPHER_CTX context;
50  const EVP_CIPHER * cipher;
51} symkey_t;
52
53extern const EVP_CIPHER * SYM_CIPHER;
54
55TPM_RESULT Crypto_symcrypto_genkey (symkey_t * key);
56
57TPM_RESULT Crypto_symcrypto_initkey (symkey_t * key, const buffer_t* keybits);
58
59
60// these functions will allocate their output buffers
61TPM_RESULT Crypto_symcrypto_encrypt (symkey_t* key,
62                              const buffer_t* clear,
63                              buffer_t* o_cipher);
64
65TPM_RESULT Crypto_symcrypto_decrypt (symkey_t* key,
66                              const buffer_t* cipher,
67                              buffer_t* o_clear);
68
69// only free the internal parts, not the 'key' ptr
70TPM_RESULT Crypto_symcrypto_freekey (symkey_t * key);
71
72#endif /* _SYM_CRYPTO_H */
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