int hash(TPMI_RH_HIERARCHY hierarchyValue, TPM2B_MAX_BUFFER *data, TPMI_ALG_HASH halg, const char *outHashFilePath, const char *outTicketFilePath)
{
UINT32 rval;
TPM2B_DIGEST outHash = { { sizeof(TPM2B_DIGEST)-2, } };
TPMT_TK_HASHCHECK validation;
rval = Tss2_Sys_Hash(sysContext, 0, data, halg, hierarchyValue, &outHash, &validation, 0);
if(rval != TPM_RC_SUCCESS)
{
printf("\n......TPM2_Hash Error. TPM Error:0x%x......\n", rval);
return -1;
}
printf("\ntpm2_hash succ.\n\n");
printf("\nhash value(hex type): ");
for(UINT16 i = 0; i < outHash.t.size; i++)
printf("%02x ", outHash.t.buffer[i]);
printf("\n");
printf("\nvalidation value(hex type): ");
for(INT16 j = 0; j < validation.digest.t.size; j++)
printf("%02x ", validation.digest.t.buffer[j]);
printf("\n");
if(saveDataToFile(outHashFilePath, (UINT8 *)&outHash, sizeof(outHash)))
return -2;
if(saveDataToFile(outTicketFilePath, (UINT8 *)&validation, sizeof(validation)))
return -3;
return 0;
}
//
// This function does a hash on a string of data.
//
UINT32 TpmHash( TPMI_ALG_HASH hashAlg, UINT16 size, BYTE *data, TPM2B_DIGEST *result )
{
TPM_RC rval;
TPM2B_MAX_BUFFER dataSizedBuffer;
UINT16 i;
TSS2_SYS_CONTEXT *sysContext;
dataSizedBuffer.t.size = size;
for( i = 0; i < size; i++ )
dataSizedBuffer.t.buffer[i] = data[i];
sysContext = InitSysContext( 3000, resMgrTctiContext, &abiVersion );
if( sysContext == 0 )
return TSS2_APP_RC_INIT_SYS_CONTEXT_FAILED;
rval = Tss2_Sys_Hash ( sysContext, 0, &dataSizedBuffer, hashAlg, TPM_RH_NULL, result, 0, 0);
TeardownSysContext( &sysContext );
return rval;
}
