1
2 /*
3 * Licensed Materials - Property of IBM
4 *
5 * trousers - An open source TCG Software Stack
6 *
7 * (C) Copyright International Business Machines Corp. 2004-2006
8 *
9 */
10
11 #include <stdlib.h>
12 #include <stdio.h>
13 #include <string.h>
14 #include <inttypes.h>
15
16 #include "trousers/tss.h"
17 #include "trousers/trousers.h"
18 #include "trousers_types.h"
19 #include "spi_utils.h"
20 #include "capabilities.h"
21 #include "tsplog.h"
22 #include "obj.h"
23
24
25 TSS_RESULT
Tspi_TPM_GetRandom(TSS_HTPM hTPM,UINT32 ulRandomDataLength,BYTE ** prgbRandomData)26 Tspi_TPM_GetRandom(TSS_HTPM hTPM, /* in */
27 UINT32 ulRandomDataLength, /* in */
28 BYTE ** prgbRandomData) /* out */
29 {
30 TSS_HCONTEXT tspContext;
31 TSS_RESULT result;
32
33 if (prgbRandomData == NULL || ulRandomDataLength > 4096)
34 return TSPERR(TSS_E_BAD_PARAMETER);
35
36 if ((result = obj_tpm_get_tsp_context(hTPM, &tspContext)))
37 return result;
38
39 if (ulRandomDataLength == 0)
40 return TSS_SUCCESS;
41
42 if ((result = TCS_API(tspContext)->GetRandom(tspContext, ulRandomDataLength,
43 prgbRandomData)))
44 return result;
45
46 if ((result = __tspi_add_mem_entry(tspContext, *prgbRandomData))) {
47 free(*prgbRandomData);
48 *prgbRandomData = NULL;
49 return result;
50 }
51
52 return TSS_SUCCESS;
53 }
54
55 TSS_RESULT
Tspi_TPM_StirRandom(TSS_HTPM hTPM,UINT32 ulEntropyDataLength,BYTE * rgbEntropyData)56 Tspi_TPM_StirRandom(TSS_HTPM hTPM, /* in */
57 UINT32 ulEntropyDataLength, /* in */
58 BYTE * rgbEntropyData) /* in */
59 {
60 TSS_RESULT result;
61 TSS_HCONTEXT tspContext;
62
63 if (ulEntropyDataLength > 0 && rgbEntropyData == NULL)
64 return TSPERR(TSS_E_BAD_PARAMETER);
65
66 if ((result = obj_tpm_get_tsp_context(hTPM, &tspContext)))
67 return result;
68
69 if ((result = TCS_API(tspContext)->StirRandom(tspContext, ulEntropyDataLength,
70 rgbEntropyData)))
71 return result;
72
73 return TSS_SUCCESS;
74 }
75