ComputerSurge/bind9
3
0
Fork 0
Code Pull Requests 1 Activity

1988. [bug] Remove a bus error from the SHA256/SHA512 support.

Browse Source 
[RT #15878]
This commit is contained in:
Mark Andrews
2006-02-24 00:03:15 +00:00
parent eae67738cb
commit 472ce617b7
3 changed files with 23 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
lib/isc/include/isc/sha2.h
View File

@@ -14,7 +14,7 @@
* PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: sha2.h,v 1.5 2006/01/31 23:01:23 marka Exp $ */
/* $Id: sha2.h,v 1.6 2006/02/24 00:03:15 marka Exp $ */
/* $FreeBSD: src/sys/crypto/sha2/sha2.h,v 1.1.2.1 2001/07/03 11:01:36 ume Exp $ */
/* $KAME: sha2.h,v 1.3 2001/03/12 08:27:48 itojun Exp $ */
@@ -79,12 +79,18 @@ ISC_LANG_BEGINDECLS
/*** SHA-256/384/512 Context Structures *******************************/
/*
* Keep buffer immediately after bitcount to preserve alignment.
*/
typedef struct {
isc_uint32_t state[8];
isc_uint64_t bitcount;
isc_uint8_t buffer[ISC_SHA256_BLOCK_LENGTH];
} isc_sha256_t;
/*
* Keep buffer immediately after bitcount to preserve alignment.
*/
typedef struct {
isc_uint64_t state[8];
isc_uint64_t bitcount[2];

20
lib/isc/sha2.c
View File

@@ -14,7 +14,7 @@
* PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: sha2.c,v 1.7 2006/01/31 23:01:23 marka Exp $ */
/* $Id: sha2.c,v 1.8 2006/02/24 00:03:15 marka Exp $ */
/* $FreeBSD: src/sys/crypto/sha2/sha2.c,v 1.2.2.2 2002/03/05 08:36:47 ume Exp $ */
/* $KAME: sha2.c,v 1.8 2001/11/08 01:07:52 itojun Exp $ */
@@ -592,7 +592,8 @@ isc_sha256_update(isc_sha256_t *context, const isc_uint8_t *data, size_t len) {
context->bitcount += freespace << 3;
len -= freespace;
data += freespace;
isc_sha256_transform(context, (isc_uint32_t*)context->buffer);
isc_sha256_transform(context,
(isc_uint32_t*)context->buffer);
} else {
/* The buffer is not yet full */
memcpy(&context->buffer[usedspace], data, len);
@@ -604,7 +605,8 @@ isc_sha256_update(isc_sha256_t *context, const isc_uint8_t *data, size_t len) {
}
while (len >= ISC_SHA256_BLOCK_LENGTH) {
/* Process as many complete blocks as we can */
isc_sha256_transform(context, (const isc_uint32_t*)data);
memcpy(context->buffer, data, ISC_SHA256_BLOCK_LENGTH);
isc_sha256_transform(context, (isc_uint32_t*)context->buffer);
context->bitcount += ISC_SHA256_BLOCK_LENGTH << 3;
len -= ISC_SHA256_BLOCK_LENGTH;
data += ISC_SHA256_BLOCK_LENGTH;
@@ -648,7 +650,8 @@ isc_sha256_final(isc_uint8_t digest[], isc_sha256_t *context) {
usedspace);
}
/* Do second-to-last transform: */
isc_sha256_transform(context, (isc_uint32_t*)context->buffer);
isc_sha256_transform(context,
(isc_uint32_t*)context->buffer);
/* And set-up for the last transform: */
memset(context->buffer, 0,
@@ -926,7 +929,8 @@ void isc_sha512_update(isc_sha512_t *context, const isc_uint8_t *data, size_t le
ADDINC128(context->bitcount, freespace << 3);
len -= freespace;
data += freespace;
isc_sha512_transform(context, (isc_uint64_t*)context->buffer);
isc_sha512_transform(context,
(isc_uint64_t*)context->buffer);
} else {
/* The buffer is not yet full */
memcpy(&context->buffer[usedspace], data, len);
@@ -938,7 +942,8 @@ void isc_sha512_update(isc_sha512_t *context, const isc_uint8_t *data, size_t le
}
while (len >= ISC_SHA512_BLOCK_LENGTH) {
/* Process as many complete blocks as we can */
isc_sha512_transform(context, (const isc_uint64_t*)data);
memcpy(context->buffer, data, ISC_SHA512_BLOCK_LENGTH);
isc_sha512_transform(context, (isc_uint64_t*)context->buffer);
ADDINC128(context->bitcount, ISC_SHA512_BLOCK_LENGTH << 3);
len -= ISC_SHA512_BLOCK_LENGTH;
data += ISC_SHA512_BLOCK_LENGTH;
@@ -975,7 +980,8 @@ void isc_sha512_last(isc_sha512_t *context) {
ISC_SHA512_BLOCK_LENGTH - usedspace);
}
/* Do second-to-last transform: */
isc_sha512_transform(context, (isc_uint64_t*)context->buffer);
isc_sha512_transform(context,
(isc_uint64_t*)context->buffer);
/* And set-up for the last transform: */
memset(context->buffer, 0, ISC_SHA512_BLOCK_LENGTH - 2);