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rev180: Sync _plat__GetUnique with upstream

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The value returned from a call to this function is written into
g_platformUniqueDetails but not used by libtpms since VENDOR_PERMANENT is
not set.

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
This commit is contained in:
Stefan Berger 2023-12-13 20:32:19 -05:00 committed by Stefan Berger
parent f61c319275
commit 3eee74f6d3
1 changed files with 8 additions and 20 deletions
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28
src/tpm2/Unique.c
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@ -3,7 +3,6 @@
/* Secret Value to the TPM */
/* Written by Ken Goldman */
/* IBM Thomas J. Watson Research Center */
/* $Id: Unique.c 1490 2019-07-26 21:13:22Z kgoldman $ */
/* */
/* Licenses and Notices */
/* */
@ -68,6 +67,7 @@
//** Includes
#include "Platform.h"
#include "Memory_fp.h" // libtpms: temporary
const char notReallyUnique[] = "This is not really a unique value. A real "
"unique value should"
@ -90,28 +90,16 @@ LIB_EXPORT uint32_t _plat__GetUnique(uint32_t which, // which vendor value to r
unsigned char* b // output buffer
)
{
const char* from = notReallyUnique;
//const char* from = notReallyUnique; // libtpms: deactivated
uint32_t retVal = 0;
if(which == 0) // the authorities value
if(which == 1)
{
for(retVal = 0;
*from != 0 && retVal < bSize;
retVal++)
{
*b++ = *from++;
}
}
else
{
#define uSize sizeof(notReallyUnique)
b = &b[((bSize < uSize) ? bSize : uSize) - 1];
for(retVal = 0;
*from != 0 && retVal < bSize;
retVal++)
{
*b-- = *from++;
}
const size_t uSize =
sizeof(notReallyUnique) <= bSize ? sizeof(notReallyUnique) : bSize;
MemoryCopy(b, notReallyUnique, uSize);
}
// else fall through to default 0
return retVal;
}