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/*
* Licensed Materials - Property of IBM
*
* trousers - An open source TCG Software Stack
*
* (C) Copyright International Business Machines Corp. 2004, 2007
*
*/
#include <stdlib.h>
#include <syslog.h>
#include <unistd.h>
#include "trousers/tss.h"
#include "trousers/trousers.h"
#include "trousers_types.h"
#include "spi_utils.h"
#include "tsplog.h"
#include "obj.h"
#ifdef TSS_BUILD_TRANSPORT
TSS_RESULT
Transport_GetRandom(TSS_HCONTEXT tspContext, /* in */
UINT32 bytesRequested, /* in */
BYTE ** randomBytes) /* out */
{
TSS_RESULT result;
UINT32 decLen = 0;
BYTE *dec = NULL;
UINT64 offset;
TCS_HANDLE handlesLen = 0;
BYTE data[sizeof(UINT32)];
if ((result = obj_context_transport_init(tspContext)))
return result;
LogDebugFn("Executing in a transport session");
offset = 0;
Trspi_LoadBlob_UINT32(&offset, bytesRequested, data);
if ((result = obj_context_transport_execute(tspContext, TPM_ORD_GetRandom, sizeof(data),
data, NULL, &handlesLen, NULL, NULL, NULL,
&decLen, &dec)))
return result;
*randomBytes = dec;
return result;
}
TSS_RESULT
Transport_StirRandom(TSS_HCONTEXT tspContext, /* in */
UINT32 inDataSize, /* in */
BYTE * inData) /* in */
{
TSS_RESULT result;
UINT64 offset;
UINT32 dataLen;
TCS_HANDLE handlesLen = 0;
BYTE *data;
if ((result = obj_context_transport_init(tspContext)))
return result;
LogDebugFn("Executing in a transport session");
dataLen = sizeof(UINT32) + inDataSize;
if ((data = malloc(dataLen)) == NULL) {
LogError("malloc of %u bytes failed", dataLen);
return TSPERR(TSS_E_OUTOFMEMORY);
}
offset = 0;
Trspi_LoadBlob_UINT32(&offset, inDataSize, data);
Trspi_LoadBlob(&offset, inDataSize, data, inData);
result = obj_context_transport_execute(tspContext, TPM_ORD_StirRandom, dataLen, data, NULL,
&handlesLen, NULL, NULL, NULL, NULL, NULL);
free(data);
return result;
}
#endif
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