/src/libtpms/src/tpm12/tpm_secret.c

Source (jump to first uncovered line)
/********************************************************************************/
/*                                                                              */
/*                              Secret Data Handler                             */
/*                           Written by Ken Goldman                             */
/*                     IBM Thomas J. Watson Research Center                     */
/*            $Id: tpm_secret.c 4071 2010-04-29 19:26:45Z kgoldman $            */
/*                                                                              */
/* (c) Copyright IBM Corporation 2006, 2010.          */
/*                    */
/* 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 names of the IBM 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   */
/* HOLDER 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.   */
/********************************************************************************/

#include <stdio.h>
#include <string.h>

#include "tpm_crypto.h"
#include "tpm_debug.h"
#include "tpm_error.h"
#include "tpm_store.h"

#include "tpm_secret.h"

void TPM_Secret_Init(TPM_SECRET tpm_secret)
{
    printf("  TPM_Secret_Init:\n");
    memset(tpm_secret, 0, TPM_SECRET_SIZE);
    return;
}

/* TPM_Secret_Load()
   
   deserialize the structure from a 'stream'
   'stream_size' is checked for sufficient data
   returns 0 or error codes

   After use, call TPM_Secret_Delete() to free memory
*/

TPM_RESULT TPM_Secret_Load(TPM_SECRET tpm_secret,
                           unsigned char **stream,
                           uint32_t *stream_size)
{
    TPM_RESULT  rc = 0;

    printf("  TPM_Secret_Load:\n");
    rc = TPM_Loadn(tpm_secret, TPM_SECRET_SIZE, stream, stream_size);
    return rc;
}

/* TPM_Secret_Store()
   
   serialize the structure to a stream contained in 'sbuffer'
   returns 0 or error codes

   After use, call TPM_Sbuffer_Delete() to free memory
*/

TPM_RESULT TPM_Secret_Store(TPM_STORE_BUFFER *sbuffer,
                            const TPM_SECRET tpm_secret)
{
     TPM_RESULT rc = 0;

     printf("  TPM_Secret_Store:\n");
     rc = TPM_Sbuffer_Append(sbuffer, tpm_secret, TPM_SECRET_SIZE);     
     return rc;
}

/* TPM_Secret_Delete()
   
   No-OP if the parameter is NULL, else:
   frees memory allocated for the secret
   sets pointers to NULL
   calls TPM_Secret_Init to set members back to default values
   The secret itself is not freed
   returns 0 or error codes
*/   

void TPM_Secret_Delete(TPM_SECRET tpm_secret)
{
    printf("  TPM_Secret_Delete:\n");
    if (tpm_secret != NULL) {
        TPM_Secret_Init(tpm_secret);
    }
    return;
}

/* TPM_Secret_Copy() copies the source to the destination
 */

void TPM_Secret_Copy(TPM_SECRET destination, const TPM_SECRET source)
{
    printf("  TPM_Secret_Copy:\n");
    memcpy(destination, source, TPM_SECRET_SIZE);
    return;
}

/* TPM_Secret_Compare() compares the source to the destination.

   Returns TPM_AUTHFAIL if the nonces are not equal
*/

TPM_RESULT TPM_Secret_Compare(TPM_SECRET expect, const TPM_SECRET actual)
{
    TPM_RESULT  rc = 0;

    printf("  TPM_Secret_Compare:\n");
    rc = memcmp(expect, actual, TPM_SECRET_SIZE);
    if (rc != 0) {
        printf("TPM_Secret_Compare: Error comparing secret\n");
        rc = TPM_AUTHFAIL;
    }
    return rc;
}

/* TPM_Secret_Generate() generates a new TPM_SECRET from the random number generator
 */

TPM_RESULT TPM_Secret_Generate(TPM_SECRET tpm_secret)
{
    TPM_RESULT  rc = 0;

    printf("  TPM_Secret_Generate:\n");
    rc = TPM_Random(tpm_secret, TPM_SECRET_SIZE);
    return rc;
}

/* TPM_Secret_XOR() XOR's the source and the destination, and returns the result on output.
 */

void TPM_Secret_XOR(TPM_SECRET output, TPM_SECRET input1, TPM_SECRET input2)
{
    size_t i;

    printf("  TPM_Secret_XOR:\n");
    for (i = 0 ; i < TPM_SECRET_SIZE ; i++) {
        output[i] = input1[i] ^ input2[i];
    }
    return;
}

Line	Count	Source (jump to first uncovered line)
1		/********************************************************************************/
2		/* */
3		/* Secret Data Handler */
4		/* Written by Ken Goldman */
5		/* IBM Thomas J. Watson Research Center */
6		/* $Id: tpm_secret.c 4071 2010-04-29 19:26:45Z kgoldman $ */
7		/* */
8		/* (c) Copyright IBM Corporation 2006, 2010. */
9		/* */
10		/* All rights reserved. */
11		/* */
12		/* Redistribution and use in source and binary forms, with or without */
13		/* modification, are permitted provided that the following conditions are */
14		/* met: */
15		/* */
16		/* Redistributions of source code must retain the above copyright notice, */
17		/* this list of conditions and the following disclaimer. */
18		/* */
19		/* Redistributions in binary form must reproduce the above copyright */
20		/* notice, this list of conditions and the following disclaimer in the */
21		/* documentation and/or other materials provided with the distribution. */
22		/* */
23		/* Neither the names of the IBM Corporation nor the names of its */
24		/* contributors may be used to endorse or promote products derived from */
25		/* this software without specific prior written permission. */
26		/* */
27		/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS */
28		/* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT */
29		/* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR */
30		/* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT */
31		/* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, */
32		/* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT */
33		/* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, */
34		/* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY */
35		/* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT */
36		/* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE */
37		/* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
38		/********************************************************************************/
39
40		#include <stdio.h>
41		#include <string.h>
42
43		#include "tpm_crypto.h"
44		#include "tpm_debug.h"
45		#include "tpm_error.h"
46		#include "tpm_store.h"
47
48		#include "tpm_secret.h"
49
50		void TPM_Secret_Init(TPM_SECRET tpm_secret)
51	0	{
52	0	printf(" TPM_Secret_Init:\n");
53	0	memset(tpm_secret, 0, TPM_SECRET_SIZE);
54	0	return;
55	0	}
56
57		/* TPM_Secret_Load()
58
59		deserialize the structure from a 'stream'
60		'stream_size' is checked for sufficient data
61		returns 0 or error codes
62
63		After use, call TPM_Secret_Delete() to free memory
64		*/
65
66		TPM_RESULT TPM_Secret_Load(TPM_SECRET tpm_secret,
67		unsigned char **stream,
68		uint32_t *stream_size)
69	0	{
70	0	TPM_RESULT rc = 0;
71
72	0	printf(" TPM_Secret_Load:\n");
73	0	rc = TPM_Loadn(tpm_secret, TPM_SECRET_SIZE, stream, stream_size);
74	0	return rc;
75	0	}
76
77		/* TPM_Secret_Store()
78
79		serialize the structure to a stream contained in 'sbuffer'
80		returns 0 or error codes
81
82		After use, call TPM_Sbuffer_Delete() to free memory
83		*/
84
85		TPM_RESULT TPM_Secret_Store(TPM_STORE_BUFFER *sbuffer,
86		const TPM_SECRET tpm_secret)
87	0	{
88	0	TPM_RESULT rc = 0;
89
90	0	printf(" TPM_Secret_Store:\n");
91	0	rc = TPM_Sbuffer_Append(sbuffer, tpm_secret, TPM_SECRET_SIZE);
92	0	return rc;
93	0	}
94
95		/* TPM_Secret_Delete()
96
97		No-OP if the parameter is NULL, else:
98		frees memory allocated for the secret
99		sets pointers to NULL
100		calls TPM_Secret_Init to set members back to default values
101		The secret itself is not freed
102		returns 0 or error codes
103		*/
104
105		void TPM_Secret_Delete(TPM_SECRET tpm_secret)
106	0	{
107	0	printf(" TPM_Secret_Delete:\n");
108	0	if (tpm_secret != NULL) {
109	0	TPM_Secret_Init(tpm_secret);
110	0	}
111	0	return;
112	0	}
113
114		/* TPM_Secret_Copy() copies the source to the destination
115		*/
116
117		void TPM_Secret_Copy(TPM_SECRET destination, const TPM_SECRET source)
118	0	{
119	0	printf(" TPM_Secret_Copy:\n");
120	0	memcpy(destination, source, TPM_SECRET_SIZE);
121	0	return;
122	0	}
123
124		/* TPM_Secret_Compare() compares the source to the destination.
125
126		Returns TPM_AUTHFAIL if the nonces are not equal
127		*/
128
129		TPM_RESULT TPM_Secret_Compare(TPM_SECRET expect, const TPM_SECRET actual)
130	0	{
131	0	TPM_RESULT rc = 0;
132
133	0	printf(" TPM_Secret_Compare:\n");
134	0	rc = memcmp(expect, actual, TPM_SECRET_SIZE);
135	0	if (rc != 0) {
136	0	printf("TPM_Secret_Compare: Error comparing secret\n");
137	0	rc = TPM_AUTHFAIL;
138	0	}
139	0	return rc;
140	0	}
141
142		/* TPM_Secret_Generate() generates a new TPM_SECRET from the random number generator
143		*/
144
145		TPM_RESULT TPM_Secret_Generate(TPM_SECRET tpm_secret)
146	0	{
147	0	TPM_RESULT rc = 0;
148
149	0	printf(" TPM_Secret_Generate:\n");
150	0	rc = TPM_Random(tpm_secret, TPM_SECRET_SIZE);
151	0	return rc;
152	0	}
153
154		/* TPM_Secret_XOR() XOR's the source and the destination, and returns the result on output.
155		*/
156
157		void TPM_Secret_XOR(TPM_SECRET output, TPM_SECRET input1, TPM_SECRET input2)
158	0	{
159	0	size_t i;
160
161	0	printf(" TPM_Secret_XOR:\n");
162	0	for (i = 0 ; i < TPM_SECRET_SIZE ; i++) {
163	0	output[i] = input1[i] ^ input2[i];
164	0	}
165	0	return;
166	0	}

Coverage Report

Created: 2025-08-26 06:23