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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 <stdio.h>
#include <string.h>
#include <inttypes.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_CreateMigrationBlob(TSS_HCONTEXT tspContext, /* in */
TCS_KEY_HANDLE parentHandle, /* in */
TCPA_MIGRATE_SCHEME migrationType, /* in */
UINT32 MigrationKeyAuthSize, /* in */
BYTE * MigrationKeyAuth, /* in */
UINT32 encDataSize, /* in */
BYTE * encData, /* in */
TPM_AUTH * parentAuth, /* in, out */
TPM_AUTH * entityAuth, /* in, out */
UINT32 * randomSize, /* out */
BYTE ** random, /* out */
UINT32 * outDataSize, /* out */
BYTE ** outData) /* out */
{
UINT64 offset;
TSS_RESULT result;
UINT32 handlesLen, dataLen, decLen;
TCS_HANDLE *handles, handle;
TPM_DIGEST pubKeyHash;
Trspi_HashCtx hashCtx;
BYTE *data, *dec;
if ((result = obj_context_transport_init(tspContext)))
return result;
LogDebugFn("Executing in a transport session");
if ((result = obj_tcskey_get_pubkeyhash(parentHandle, 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 = parentHandle;
handles = &handle;
dataLen = sizeof(TCPA_MIGRATE_SCHEME)
+ MigrationKeyAuthSize
+ sizeof(UINT32)
+ encDataSize;
if ((data = malloc(dataLen)) == NULL) {
LogError("malloc of %u bytes failed", dataLen);
return TSPERR(TSS_E_OUTOFMEMORY);
}
offset = 0;
Trspi_LoadBlob_UINT16(&offset, migrationType, data);
Trspi_LoadBlob(&offset, MigrationKeyAuthSize, data, MigrationKeyAuth);
Trspi_LoadBlob_UINT32(&offset, encDataSize, data);
Trspi_LoadBlob(&offset, encDataSize, data, encData);
if ((result = obj_context_transport_execute(tspContext, TPM_ORD_CreateMigrationBlob,
dataLen, data, &pubKeyHash, &handlesLen,
&handles, parentAuth, entityAuth, &decLen,
&dec))) {
free(data);
return result;
}
free(data);
offset = 0;
Trspi_UnloadBlob_UINT32(&offset, randomSize, dec);
if ((*random = malloc(*randomSize)) == NULL) {
free(dec);
LogError("malloc of %u bytes failed", *randomSize);
*randomSize = 0;
return TSPERR(TSS_E_OUTOFMEMORY);
}
Trspi_UnloadBlob(&offset, *randomSize, dec, *random);
Trspi_UnloadBlob_UINT32(&offset, outDataSize, dec);
if ((*outData = malloc(*outDataSize)) == NULL) {
free(*random);
*random = NULL;
*randomSize = 0;
free(dec);
LogError("malloc of %u bytes failed", *outDataSize);
*outDataSize = 0;
return TSPERR(TSS_E_OUTOFMEMORY);
}
Trspi_UnloadBlob(&offset, *outDataSize, dec, *outData);
free(dec);
return result;
}
TSS_RESULT
Transport_ConvertMigrationBlob(TSS_HCONTEXT tspContext, /* in */
TCS_KEY_HANDLE parentHandle, /* in */
UINT32 inDataSize, /* in */
BYTE * inData, /* in */
UINT32 randomSize, /* in */
BYTE * random, /* in */
TPM_AUTH * parentAuth, /* in, out */
UINT32 * outDataSize, /* out */
BYTE ** outData) /* out */
{
UINT64 offset;
TSS_RESULT result;
UINT32 handlesLen, dataLen, decLen;
TCS_HANDLE *handles, handle;
TPM_DIGEST pubKeyHash;
Trspi_HashCtx hashCtx;
BYTE *data, *dec;
if ((result = obj_context_transport_init(tspContext)))
return result;
LogDebugFn("Executing in a transport session");
if ((result = obj_tcskey_get_pubkeyhash(parentHandle, 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 = parentHandle;
handles = &handle;
dataLen = (2 * sizeof(UINT32)) + randomSize + 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);
Trspi_LoadBlob_UINT32(&offset, randomSize, data);
Trspi_LoadBlob(&offset, randomSize, data, random);
if ((result = obj_context_transport_execute(tspContext, TPM_ORD_ConvertMigrationBlob,
dataLen, data, &pubKeyHash, &handlesLen,
&handles, parentAuth, NULL, &decLen, &dec))) {
free(data);
return result;
}
free(data);
offset = 0;
Trspi_UnloadBlob_UINT32(&offset, outDataSize, dec);
if ((*outData = malloc(*outDataSize)) == NULL) {
free(dec);
LogError("malloc of %u bytes failed", *outDataSize);
*outDataSize = 0;
return TSPERR(TSS_E_OUTOFMEMORY);
}
Trspi_UnloadBlob(&offset, *outDataSize, dec, *outData);
free(dec);
return result;
}
TSS_RESULT
Transport_AuthorizeMigrationKey(TSS_HCONTEXT tspContext, /* in */
TCPA_MIGRATE_SCHEME migrateScheme, /* in */
UINT32 MigrationKeySize, /* in */
BYTE * MigrationKey, /* in */
TPM_AUTH * ownerAuth, /* in, out */
UINT32 * MigrationKeyAuthSize, /* out */
BYTE ** MigrationKeyAuth) /* out */
{
UINT64 offset;
UINT16 tpmMigrateScheme;
TSS_RESULT result;
UINT32 handlesLen = 0, dataLen, decLen;
BYTE *data, *dec;
if ((result = obj_context_transport_init(tspContext)))
return result;
LogDebugFn("Executing in a transport session");
/* The TSS_MIGRATE_SCHEME must be changed to a TPM_MIGRATE_SCHEME here, since the TCS
* expects a TSS migrate scheme, but this could be wrapped by the TSP before it gets to the
* TCS. */
switch (migrateScheme) {
case TSS_MS_MIGRATE:
tpmMigrateScheme = TCPA_MS_MIGRATE;
break;
case TSS_MS_REWRAP:
tpmMigrateScheme = TCPA_MS_REWRAP;
break;
case TSS_MS_MAINT:
tpmMigrateScheme = TCPA_MS_MAINT;
break;
#ifdef TSS_BUILD_CMK
case TSS_MS_RESTRICT_MIGRATE:
tpmMigrateScheme = TPM_MS_RESTRICT_MIGRATE;
break;
case TSS_MS_RESTRICT_APPROVE_DOUBLE:
tpmMigrateScheme = TPM_MS_RESTRICT_APPROVE_DOUBLE;
break;
#endif
default:
return TSPERR(TSS_E_BAD_PARAMETER);
break;
}
dataLen = sizeof(TCPA_MIGRATE_SCHEME) + MigrationKeySize;
if ((data = malloc(dataLen)) == NULL) {
LogError("malloc of %u bytes failed", dataLen);
return TSPERR(TSS_E_OUTOFMEMORY);
}
offset = 0;
Trspi_LoadBlob_UINT16(&offset, tpmMigrateScheme, data);
Trspi_LoadBlob(&offset, MigrationKeySize, data, MigrationKey);
if ((result = obj_context_transport_execute(tspContext, TPM_ORD_AuthorizeMigrationKey,
dataLen, data, NULL, &handlesLen, NULL,
ownerAuth, NULL, &decLen, &dec))) {
free(data);
return result;
}
free(data);
*MigrationKeyAuthSize = decLen;
*MigrationKeyAuth = dec;
return result;
}
#endif
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