Home | History | Annotate | Line # | Download | only in tspi 
      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. 2004-2007
      8  *
      9  */
     10 
     11 
     12 #include <stdlib.h>
     13 #include <stdio.h>
     14 #include <string.h>
     15 #include <time.h>
     16 #include <errno.h>
     17 
     18 #include "trousers/tss.h"
     19 #include "trousers/trousers.h"
     20 #include "trousers_types.h"
     21 #include "spi_utils.h"
     22 #include "capabilities.h"
     23 #include "tsplog.h"
     24 #include "obj.h"
     25 
     26 
     27 #ifdef TSS_BUILD_TRANSPORT
     28 TSS_RESULT
     29 Transport_Extend(TSS_HCONTEXT tspContext,	/* in */
     30 		 TCPA_PCRINDEX pcrNum,	/* in */
     31 		 TCPA_DIGEST inDigest,	/* in */
     32 		 TCPA_PCRVALUE * outDigest)	/* out */
     33 {
     34 	TSS_RESULT result;
     35 	UINT64 offset;
     36 	TCS_HANDLE handlesLen = 0;
     37 	UINT32 decLen;
     38 	BYTE data[sizeof(TCPA_PCRINDEX) + sizeof(TCPA_DIGEST)], *dec;
     39 
     40 	if ((result = obj_context_transport_init(tspContext)))
     41 		return result;
     42 
     43 	LogDebugFn("Executing in a transport session");
     44 
     45 	offset = 0;
     46 	Trspi_LoadBlob_UINT32(&offset, pcrNum, data);
     47 	Trspi_LoadBlob(&offset, TPM_SHA1_160_HASH_LEN, data, inDigest.digest);
     48 
     49 	if ((result = obj_context_transport_execute(tspContext, TPM_ORD_Extend, sizeof(data), data,
     50 						    NULL, &handlesLen, NULL, NULL, NULL, &decLen,
     51 						    &dec)))
     52 		return result;
     53 
     54 	offset = 0;
     55 	Trspi_UnloadBlob(&offset, decLen, dec, outDigest->digest);
     56 
     57 	free(dec);
     58 
     59 	return TSS_SUCCESS;
     60 }
     61 
     62 TSS_RESULT
     63 Transport_PcrRead(TSS_HCONTEXT tspContext,	/* in */
     64 		  TCPA_PCRINDEX pcrNum,	/* in */
     65 		  TCPA_PCRVALUE * outDigest)	/* out */
     66 {
     67 	TSS_RESULT result;
     68 	UINT64 offset;
     69 	TCS_HANDLE handlesLen = 0;
     70 	UINT32 decLen;
     71 	BYTE data[sizeof(TCPA_PCRINDEX)], *dec;
     72 
     73 	if ((result = obj_context_transport_init(tspContext)))
     74 		return result;
     75 
     76 	LogDebugFn("Executing in a transport session");
     77 
     78 	offset = 0;
     79 	Trspi_LoadBlob_UINT32(&offset, pcrNum, data);
     80 
     81 	if ((result = obj_context_transport_execute(tspContext, TPM_ORD_PcrRead, sizeof(data),
     82 						    data, NULL, &handlesLen, NULL, NULL, NULL,
     83 						    &decLen, &dec)))
     84 		return result;
     85 
     86 	offset = 0;
     87 	Trspi_UnloadBlob(&offset, decLen, dec, outDigest->digest);
     88 
     89 	free(dec);
     90 
     91 	return TSS_SUCCESS;
     92 }
     93 
     94 
     95 TSS_RESULT
     96 Transport_PcrReset(TSS_HCONTEXT tspContext,	/* in */
     97 		   UINT32 pcrDataSizeIn,	/* in */
     98 		   BYTE * pcrDataIn)		/* in */
     99 {
    100 	TSS_RESULT result;
    101 	TCS_HANDLE handlesLen = 0;
    102 
    103 	if ((result = obj_context_transport_init(tspContext)))
    104 		return result;
    105 
    106 	LogDebugFn("Executing in a transport session");
    107 
    108 	return obj_context_transport_execute(tspContext, TPM_ORD_PCR_Reset, pcrDataSizeIn,
    109 					     pcrDataIn, NULL, &handlesLen, NULL, NULL, NULL, NULL,
    110 					     NULL);
    111 }
    112 #endif
    113