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Ensure numbers are 32bits in sha2.c

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This commit is contained in:
Kano 2012-01-30 16:37:09 +11:00
parent 280588c1af
commit 0c27237031
2 changed files with 14 additions and 12 deletions
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20
sha2.c
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@ -40,10 +40,10 @@
#ifndef GET_ULONG_BE
#define GET_ULONG_BE(n,b,i) \
{ \
(n) = ( (unsigned long) (b)[(i) ] << 24 ) \
| ( (unsigned long) (b)[(i) + 1] << 16 ) \
| ( (unsigned long) (b)[(i) + 2] << 8 ) \
| ( (unsigned long) (b)[(i) + 3] ); \
(n) = ( (uint32_t) (b)[(i) ] << 24 ) \
| ( (uint32_t) (b)[(i) + 1] << 16 ) \
| ( (uint32_t) (b)[(i) + 2] << 8 ) \
| ( (uint32_t) (b)[(i) + 3] ); \
}
#endif
@ -95,8 +95,8 @@ void sha2_starts( sha2_context *ctx, int is224 )
static void sha2_process( sha2_context *ctx, const unsigned char data[64] )
{
unsigned long temp1, temp2, W[64];
unsigned long A, B, C, D, E, F, G, H;
uint32_t temp1, temp2, W[64];
uint32_t A, B, C, D, E, F, G, H;
GET_ULONG_BE( W[ 0], data, 0 );
GET_ULONG_BE( W[ 1], data, 4 );
@ -230,7 +230,7 @@ static void sha2_process( sha2_context *ctx, const unsigned char data[64] )
void sha2_update( sha2_context *ctx, const unsigned char *input, int ilen )
{
int fill;
unsigned long left;
uint32_t left;
if( ilen <= 0 )
return;
@ -241,7 +241,7 @@ void sha2_update( sha2_context *ctx, const unsigned char *input, int ilen )
ctx->total[0] += ilen;
ctx->total[0] &= 0xFFFFFFFF;
if( ctx->total[0] < (unsigned long) ilen )
if( ctx->total[0] < (uint32_t) ilen )
ctx->total[1]++;
if( left && ilen >= fill )
@ -281,8 +281,8 @@ static const unsigned char sha2_padding[64] =
*/
void sha2_finish( sha2_context *ctx, unsigned char output[32] )
{
unsigned long last, padn;
unsigned long high, low;
uint32_t last, padn;
uint32_t high, low;
unsigned char msglen[8];
high = ( ctx->total[0] >> 29 )

6
sha2.h
View File

@ -26,13 +26,15 @@
#ifndef POLARSSL_SHA2_H
#define POLARSSL_SHA2_H
#include <stdint.h>
/**
* \brief SHA-256 context structure
*/
typedef struct
{
unsigned long total[2]; /*!< number of bytes processed */
unsigned long state[8]; /*!< intermediate digest state */
uint32_t total[2]; /*!< number of bytes processed */
uint32_t state[8]; /*!< intermediate digest state */
unsigned char buffer[64]; /*!< data block being processed */
unsigned char ipad[64]; /*!< HMAC: inner padding */