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/*
* Licensed Materials - Property of IBM
*
* trousers - An open source TCG Software Stack
*
* (C) Copyright International Business Machines Corp. 2007
*
*/
#include <stdlib.h>
#include <string.h>
#include "trousers/tss.h"
#include "trousers/trousers.h"
#include "trousers_types.h"
#include "spi_utils.h"
#include "capabilities.h"
#include "tsplog.h"
#include "obj.h"
#ifdef TSS_BUILD_TRANSPORT
TSS_RESULT
Transport_Sign(TSS_HCONTEXT tspContext, /* in */
TCS_KEY_HANDLE keyHandle, /* in */
UINT32 areaToSignSize, /* in */
BYTE * areaToSign, /* in */
TPM_AUTH * privAuth, /* in, out */
UINT32 * sigSize, /* out */
BYTE ** sig) /* out */
{
UINT64 offset;
TSS_RESULT result;
UINT32 handlesLen, decLen, dataLen;
TCS_HANDLE *handles, handle;
TPM_DIGEST pubKeyHash;
Trspi_HashCtx hashCtx;
BYTE *dec, *data;
if ((result = obj_context_transport_init(tspContext)))
return result;
LogDebugFn("Executing in a transport session");
if ((result = obj_tcskey_get_pubkeyhash(keyHandle, pubKeyHash.digest)))
return result;
result = Trspi_HashInit(&hashCtx, TSS_HASH_SHA1);
result |= Trspi_Hash_DIGEST(&hashCtx, pubKeyHash.digest);
if ((result |= Trspi_HashFinal(&hashCtx, pubKeyHash.digest)))
return result;
handlesLen = 1;
handle = keyHandle;
handles = &handle;
dataLen = sizeof(UINT32) + areaToSignSize;
if ((data = malloc(dataLen)) == NULL) {
LogError("malloc of %u bytes failed", dataLen);
return TSPERR(TSS_E_OUTOFMEMORY);
}
offset = 0;
Trspi_LoadBlob_UINT32(&offset, areaToSignSize, data);
Trspi_LoadBlob(&offset, areaToSignSize, data, areaToSign);
if ((result = obj_context_transport_execute(tspContext, TPM_ORD_Sign, dataLen, data,
&pubKeyHash, &handlesLen, &handles,
privAuth, NULL, &decLen, &dec))) {
free(data);
return result;
}
free(data);
offset = 0;
Trspi_UnloadBlob_UINT32(&offset, sigSize, dec);
if ((*sig = malloc(*sigSize)) == NULL) {
free(dec);
LogError("malloc of %u bytes failed", *sigSize);
*sigSize = 0;
return TSPERR(TSS_E_OUTOFMEMORY);
}
Trspi_UnloadBlob(&offset, *sigSize, dec, *sig);
return result;
}
#endif
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