1 /* Microsoft Reference Implementation for TPM 2.0
2 *
3 * The copyright in this software is being made available under the BSD License,
4 * included below. This software may be subject to other third party and
5 * contributor rights, including patent rights, and no such rights are granted
6 * under this license.
7 *
8 * Copyright (c) Microsoft Corporation
9 *
10 * All rights reserved.
11 *
12 * BSD License
13 *
14 * Redistribution and use in source and binary forms, with or without modification,
15 * are permitted provided that the following conditions are met:
16 *
17 * Redistributions of source code must retain the above copyright notice, this list
18 * of conditions and the following disclaimer.
19 *
20 * Redistributions in binary form must reproduce the above copyright notice, this
21 * list of conditions and the following disclaimer in the documentation and/or other
22 * materials provided with the distribution.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ""AS IS""
25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
27 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
28 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
29 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
30 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
31 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
32 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 */
35
36 //** Introduction
37 //
38 // The functions in this file are used for initialization of the interface to the
39 // LibTomCrypt and MpaLib libraries. This is not used if only the LTC hash and
40 // symmetric functions are used.
41
42 //** Defines and Includes
43
44 #include "Tpm.h"
45
46 #if (defined SYM_LIB_LTC) && ALG_TDES
47
48 //** TDES_setup
49 // This function calls the LTC function to generate a TDES key schedule. If the
50 // key is one DES key (8 bytes), then it is replicated two more times to create a
51 // 24-byte TDES key. If the key is two key (16 bytes), then the first DES key is
52 // replicated to the third key position.
TDES_setup(const BYTE * key,UINT32 keyBits,symmetric_key * skey)53 void TDES_setup(
54 const BYTE *key,
55 UINT32 keyBits,
56 symmetric_key *skey
57 )
58 {
59 BYTE k[24];
60 BYTE *kp;
61
62 // If this is two-key, make it three key by replicating K1
63 if(keyBits == 128)
64 {
65 memcpy(k, key, 16);
66 memcpy(&k[16], key, 8);
67 kp = k;
68 }
69 else
70 kp = (BYTE *)key;
71
72 des3_setup(kp, 24, 0, skey);
73 }
74
75 #endif // MATH_LIB_LTC && ALG_TDES
76