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. 2004-2006 8 * 9 */ 10 11#include <stdlib.h> 12#include <stdio.h> 13#include <string.h> 14#include <inttypes.h> 15 16#include "trousers/tss.h" 17#include "trousers/trousers.h" 18#include "trousers_types.h" 19#include "spi_utils.h" 20#include "capabilities.h" 21#include "tsplog.h" 22#include "obj.h" 23 24 25TSS_RESULT 26Tspi_TPM_GetRandom(TSS_HTPM hTPM, /* in */ 27 UINT32 ulRandomDataLength, /* in */ 28 BYTE ** prgbRandomData) /* out */ 29{ 30 TSS_HCONTEXT tspContext; 31 TSS_RESULT result; 32 33 if (prgbRandomData == NULL || ulRandomDataLength > 4096) 34 return TSPERR(TSS_E_BAD_PARAMETER); 35 36 if ((result = obj_tpm_get_tsp_context(hTPM, &tspContext))) 37 return result; 38 39 if (ulRandomDataLength == 0) 40 return TSS_SUCCESS; 41 42 if ((result = TCS_API(tspContext)->GetRandom(tspContext, ulRandomDataLength, 43 prgbRandomData))) 44 return result; 45 46 if ((result = __tspi_add_mem_entry(tspContext, *prgbRandomData))) { 47 free(*prgbRandomData); 48 *prgbRandomData = NULL; 49 return result; 50 } 51 52 return TSS_SUCCESS; 53} 54 55TSS_RESULT 56Tspi_TPM_StirRandom(TSS_HTPM hTPM, /* in */ 57 UINT32 ulEntropyDataLength, /* in */ 58 BYTE * rgbEntropyData) /* in */ 59{ 60 TSS_RESULT result; 61 TSS_HCONTEXT tspContext; 62 63 if (ulEntropyDataLength > 0 && rgbEntropyData == NULL) 64 return TSPERR(TSS_E_BAD_PARAMETER); 65 66 if ((result = obj_tpm_get_tsp_context(hTPM, &tspContext))) 67 return result; 68 69 if ((result = TCS_API(tspContext)->StirRandom(tspContext, ulEntropyDataLength, 70 rgbEntropyData))) 71 return result; 72 73 return TSS_SUCCESS; 74} 75