/src/libtpms/src/tpm12/tpm_nonce.c

Source (jump to first uncovered line)
/********************************************************************************/
/*                                                                              */
/*                              Nonce Handler                                   */
/*                           Written by Ken Goldman                             */
/*                     IBM Thomas J. Watson Research Center                     */
/*            $Id: tpm_nonce.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_structures.h"

#include "tpm_nonce.h"

/* TPM_Nonce_Init resets a nonce structure to zeros */

void TPM_Nonce_Init(TPM_NONCE tpm_nonce)
{
    size_t i;

    printf("  TPM_Nonce_Init:\n");
    for (i = 0 ; i < TPM_NONCE_SIZE ; i++) {
        tpm_nonce[i] = 0;
    }
    return;
}

/* TPM_Nonce_Load()

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


TPM_RESULT TPM_Nonce_Load(TPM_NONCE tpm_nonce,
                          unsigned char **stream,
                          uint32_t *stream_size)
{
    TPM_RESULT  rc = 0;
    
    printf("  TPM_Nonce_Load:\n");
    rc = TPM_Loadn(tpm_nonce, TPM_NONCE_SIZE, stream, stream_size);
    return rc;
}

/* TPM_Nonce_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_Nonce_Store(TPM_STORE_BUFFER *sbuffer,
                           const TPM_NONCE tpm_nonce)
{
    TPM_RESULT  rc = 0;

    printf("  TPM_Nonce_Store:\n");
    rc = TPM_Sbuffer_Append(sbuffer, tpm_nonce, TPM_NONCE_SIZE);        
    return rc;
}

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

void TPM_Nonce_Copy(TPM_NONCE destination, const TPM_NONCE source)
{
    printf("  TPM_Nonce_Copy:\n");
    memcpy(destination, source, TPM_NONCE_SIZE);
    return;
}

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

   Returns TPM_AUTHFAIL if the nonces are not equal
*/

TPM_RESULT TPM_Nonce_Compare(TPM_NONCE expect, const TPM_NONCE actual)
{
    TPM_RESULT  rc = 0;

    printf("  TPM_Nonce_Compare:\n");
    rc = memcmp(expect, actual, TPM_NONCE_SIZE);
    if (rc != 0) {
        printf("TPM_Nonce_Compare: Error comparing nonce\n");
        TPM_PrintFour(" TPM_Nonce_Compare: Expect", expect);
        TPM_PrintFour(" TPM_Nonce_Compare: Actual", actual);
        rc = TPM_AUTHFAIL;
    }
    return rc;
}

/* TPM_Nonce_Generate() generates a new nonce from the random number generator
 */

TPM_RESULT TPM_Nonce_Generate(TPM_NONCE tpm_nonce)
{
    TPM_RESULT  rc = 0;

    printf("  TPM_Nonce_Generate:\n");
    rc = TPM_Random(tpm_nonce, TPM_NONCE_SIZE);
    return rc;
}

/* TPM_Nonce_IsZero() returns 'isZero' TRUE is all bytes 'tpm_nonce' are 0x00
 */

void TPM_Nonce_IsZero(TPM_BOOL *isZero, TPM_NONCE tpm_nonce)
{
    size_t i;

    printf("  TPM_Nonce_IsZero:\n");
    for (i = 0, *isZero = TRUE ; (i < TPM_NONCE_SIZE) && *isZero ; i++) {
        if (tpm_nonce[i] != 0) {
            *isZero = FALSE;
        }
    }
    return;
}


Line	Count	Source (jump to first uncovered line)
1		/********************************************************************************/
2		/* */
3		/* Nonce Handler */
4		/* Written by Ken Goldman */
5		/* IBM Thomas J. Watson Research Center */
6		/* $Id: tpm_nonce.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_structures.h"
47
48		#include "tpm_nonce.h"
49
50		/* TPM_Nonce_Init resets a nonce structure to zeros */
51
52		void TPM_Nonce_Init(TPM_NONCE tpm_nonce)
53	0	{
54	0	size_t i;
55
56	0	printf(" TPM_Nonce_Init:\n");
57	0	for (i = 0 ; i < TPM_NONCE_SIZE ; i++) {
58	0	tpm_nonce[i] = 0;
59	0	}
60	0	return;
61	0	}
62
63		/* TPM_Nonce_Load()
64
65		deserialize the structure from a 'stream'
66		'stream_size' is checked for sufficient data
67		returns 0 or error codes
68		*/
69
70
71		TPM_RESULT TPM_Nonce_Load(TPM_NONCE tpm_nonce,
72		unsigned char **stream,
73		uint32_t *stream_size)
74	0	{
75	0	TPM_RESULT rc = 0;
76
77	0	printf(" TPM_Nonce_Load:\n");
78	0	rc = TPM_Loadn(tpm_nonce, TPM_NONCE_SIZE, stream, stream_size);
79	0	return rc;
80	0	}
81
82		/* TPM_Nonce_Store()
83
84		serialize the structure to a stream contained in 'sbuffer'
85		returns 0 or error codes
86
87		After use, call TPM_Sbuffer_Delete() to free memory
88		*/
89
90		TPM_RESULT TPM_Nonce_Store(TPM_STORE_BUFFER *sbuffer,
91		const TPM_NONCE tpm_nonce)
92	0	{
93	0	TPM_RESULT rc = 0;
94
95	0	printf(" TPM_Nonce_Store:\n");
96	0	rc = TPM_Sbuffer_Append(sbuffer, tpm_nonce, TPM_NONCE_SIZE);
97	0	return rc;
98	0	}
99
100		/* TPM_Nonce_Copy() copies the source to the destination
101		*/
102
103		void TPM_Nonce_Copy(TPM_NONCE destination, const TPM_NONCE source)
104	0	{
105	0	printf(" TPM_Nonce_Copy:\n");
106	0	memcpy(destination, source, TPM_NONCE_SIZE);
107	0	return;
108	0	}
109
110		/* TPM_Nonce_Compare() compares the source to the destination.
111
112		Returns TPM_AUTHFAIL if the nonces are not equal
113		*/
114
115		TPM_RESULT TPM_Nonce_Compare(TPM_NONCE expect, const TPM_NONCE actual)
116	0	{
117	0	TPM_RESULT rc = 0;
118
119	0	printf(" TPM_Nonce_Compare:\n");
120	0	rc = memcmp(expect, actual, TPM_NONCE_SIZE);
121	0	if (rc != 0) {
122	0	printf("TPM_Nonce_Compare: Error comparing nonce\n");
123	0	TPM_PrintFour(" TPM_Nonce_Compare: Expect", expect);
124	0	TPM_PrintFour(" TPM_Nonce_Compare: Actual", actual);
125	0	rc = TPM_AUTHFAIL;
126	0	}
127	0	return rc;
128	0	}
129
130		/* TPM_Nonce_Generate() generates a new nonce from the random number generator
131		*/
132
133		TPM_RESULT TPM_Nonce_Generate(TPM_NONCE tpm_nonce)
134	0	{
135	0	TPM_RESULT rc = 0;
136
137	0	printf(" TPM_Nonce_Generate:\n");
138	0	rc = TPM_Random(tpm_nonce, TPM_NONCE_SIZE);
139	0	return rc;
140	0	}
141
142		/* TPM_Nonce_IsZero() returns 'isZero' TRUE is all bytes 'tpm_nonce' are 0x00
143		*/
144
145		void TPM_Nonce_IsZero(TPM_BOOL *isZero, TPM_NONCE tpm_nonce)
146	0	{
147	0	size_t i;
148
149	0	printf(" TPM_Nonce_IsZero:\n");
150	0	for (i = 0, isZero = TRUE ; (i < TPM_NONCE_SIZE) && isZero ; i++) {
151	0	if (tpm_nonce[i] != 0) {
152	0	*isZero = FALSE;
153	0	}
154	0	}
155	0	return;
156	0	}
157

Coverage Report

Created: 2025-07-23 07:04