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rev148: Implement IsNumeric() [not used]

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Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
This commit is contained in:
Stefan Berger 2018-07-11 00:00:10 -04:00 committed by Stefan Berger
parent d36842a68e
commit 207f0b7ebd
2 changed files with 29 additions and 7 deletions
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28
src/tpm2/MathOnByteBuffers.c
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@ -3,7 +3,7 @@
/* Math functions performed with canonical integers in byte buffers */
/* Written by Ken Goldman */
/* IBM Thomas J. Watson Research Center */
/* $Id: MathOnByteBuffers.c 1088 2017-10-26 19:41:33Z kgoldman $ */
/* $Id: MathOnByteBuffers.c 1259 2018-07-10 19:11:09Z kgoldman $ */
/* */
/* Licenses and Notices */
/* */
@ -55,7 +55,7 @@
/* arising in any way out of use or reliance upon this specification or any */
/* information herein. */
/* */
/* (c) Copyright IBM Corp. and others, 2016, 2017 */
/* (c) Copyright IBM Corp. and others, 2016 - 2018 */
/* */
/********************************************************************************/
@ -218,15 +218,17 @@ AdjustNumberB(
{
BYTE *from;
UINT16 i;
// See if number is already the requested size
if(num->size == requestedSize)
return requestedSize;
from = num->buffer;
// This is a request to shift the number to the left (remove leading zeros)
if (num->size > requestedSize)
{
// This is a request to shift the number to the left (remove leading zeros)
// Find the first non-zero byte. Don't look past the point where removing
// more zeros would make the number smaller than requested.
for(i = num->size; *from == 0 && i > requestedSize; from++, i--); // kgold
// more zeros would make the number smaller than requested, and don't throw
// away any significant digits.
for(i = num->size; *from == 0 && i > requestedSize; from++, i--);
if(i < num->size)
{
num->size = i;
@ -263,3 +265,19 @@ ShiftLeft(
}
return value;
}
/* 9.11.2.7 IsNumeric() */
/* Verifies that all the characters are simple numeric (0-9) */
BOOL
IsNumeric(
TPM2B *value
)
{
UINT16 i;
for(i = 0; i < value->size; i++)
{
if(value->buffer[i] < '0' || value->buffer[i] > '9')
return FALSE;
}
return TRUE;
}

8
src/tpm2/MathOnByteBuffers_fp.h
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@ -3,7 +3,7 @@
/* Math functions performed with canonical integers in byte buffers */
/* Written by Ken Goldman */
/* IBM Thomas J. Watson Research Center */
/* $Id: MathOnByteBuffers_fp.h 1047 2017-07-20 18:27:34Z kgoldman $ */
/* $Id: MathOnByteBuffers_fp.h 1259 2018-07-10 19:11:09Z kgoldman $ */
/* */
/* Licenses and Notices */
/* */
@ -55,7 +55,7 @@
/* arising in any way out of use or reliance upon this specification or any */
/* information herein. */
/* */
/* (c) Copyright IBM Corp. and others, 2016, 2017 */
/* (c) Copyright IBM Corp. and others, 2016 - 2018 */
/* */
/********************************************************************************/
@ -107,4 +107,8 @@ ShiftLeft(
TPM2B *value // IN/OUT: value to shift and shifted value out
);
BOOL
IsNumeric(
TPM2B *value
);
#endif