githubmirror/libtpms

src/tpm2/RandomCommands.c
94 строки4 KB
Stefan Berger
rev180: Sync whitespace, comment and trivial changes
04 янв 2024, 04:23
04 янв 2024, 04:23f01c977
/********************************************************************************/
/*										*/
/*			    Random Number Generator 				*/
/*			     Written by Ken Goldman				*/
/*		       IBM Thomas J. Watson Research Center			*/
/*            $Id: RandomCommands.c 1671 2021-06-03 18:30:41Z kgoldman $	*/
/*										*/
/*  Licenses and Notices							*/
/*										*/
/*  1. Copyright Licenses:							*/
/*										*/
/*  - Trusted Computing Group (TCG) grants to the user of the source code in	*/
/*    this specification (the "Source Code") a worldwide, irrevocable, 		*/
/*    nonexclusive, royalty free, copyright license to reproduce, create 	*/
/*    derivative works, distribute, display and perform the Source Code and	*/
/*    derivative works thereof, and to grant others the rights granted herein.	*/
/*										*/
/*  - The TCG grants to the user of the other parts of the specification 	*/
/*    (other than the Source Code) the rights to reproduce, distribute, 	*/
/*    display, and perform the specification solely for the purpose of 		*/
/*    developing products based on such documents.				*/
/*										*/
/*  2. Source Code Distribution Conditions:					*/
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/*    this list of conditions and the following disclaimers.			*/
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/*  - THE COPYRIGHT LICENSES SET FORTH ABOVE DO NOT REPRESENT ANY FORM OF	*/
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/*										*/
/*  (c) Copyright IBM Corp. and others, 2016 - 2018				*/
/*										*/
/********************************************************************************/

#include "Tpm.h"
#include "GetRandom_fp.h"
#if CC_GetRandom  // Conditional expansion of this file
TPM_RC
TPM2_GetRandom(
	       GetRandom_In    *in,            // IN: input parameter list
	       GetRandom_Out   *out            // OUT: output parameter list
	       )
{
    // Command Output
    // if the requested bytes exceed the output buffer size, generates the
    // maximum bytes that the output buffer allows
    if(in->bytesRequested > sizeof(TPMU_HA))
	out->randomBytes.t.size = sizeof(TPMU_HA);
    else
	out->randomBytes.t.size = in->bytesRequested;
    CryptRandomGenerate(out->randomBytes.t.size, out->randomBytes.t.buffer);
   return TPM_RC_SUCCESS;
}
#endif // CC_GetRandom
#include "Tpm.h"
#include "StirRandom_fp.h"
#if CC_StirRandom  // Conditional expansion of this file
TPM_RC
TPM2_StirRandom(
		StirRandom_In   *in             // IN: input parameter list
		)
{
    // Internal Data Update
    CryptRandomStir(in->inData.t.size, in->inData.t.buffer);
    return TPM_RC_SUCCESS;
}
#endif // CC_StirRandom