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- dtucker@cvs.openbsd.org 2013/06/03 00:03:18

Browse Source 
[mac.c]
     force the MAC output to be 64-bit aligned so umac won't see unaligned
     accesses on strict-alignment architectures.  bz#2101, patch from
     tomas.kuthan at oracle.com, ok djm@
This commit is contained in:
Darren Tucker 2013-06-06 08:12:37 +10:00
parent ea8342c248
commit 4ac66af091
2 changed files with 16 additions and 8 deletions
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5
ChangeLog
View File

@ -17,6 +17,11 @@
[clientloop.h clientloop.c mux.c]
No need for the mux cleanup callback to be visible so restore it to static
and call it through the detach_user function pointer. ok djm@
- dtucker@cvs.openbsd.org 2013/06/03 00:03:18
[mac.c]
force the MAC output to be 64-bit aligned so umac won't see unaligned
accesses on strict-alignment architectures. bz#2101, patch from
tomas.kuthan at oracle.com, ok djm@
20130602
- (tim) [Makefile.in] Make Solaris, UnixWare, & OpenServer linkers happy

19
mac.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: mac.c,v 1.23 2013/05/17 00:13:13 djm Exp $ */
/* $OpenBSD: mac.c,v 1.24 2013/06/03 00:03:18 dtucker Exp $ */
/*
* Copyright (c) 2001 Markus Friedl. All rights reserved.
*
@ -174,12 +174,15 @@ mac_init(Mac *mac)
u_char *
mac_compute(Mac *mac, u_int32_t seqno, u_char *data, int datalen)
{
static u_char m[EVP_MAX_MD_SIZE];
static union {
u_char m[EVP_MAX_MD_SIZE];
u_int64_t for_align;
} u;
u_char b[4], nonce[8];
if (mac->mac_len > sizeof(m))
if (mac->mac_len > sizeof(u))
fatal("mac_compute: mac too long %u %lu",
mac->mac_len, (u_long)sizeof(m));
mac->mac_len, (u_long)sizeof(u));
switch (mac->type) {
case SSH_EVP:
@ -188,22 +191,22 @@ mac_compute(Mac *mac, u_int32_t seqno, u_char *data, int datalen)
HMAC_Init(&mac->evp_ctx, NULL, 0, NULL);
HMAC_Update(&mac->evp_ctx, b, sizeof(b));
HMAC_Update(&mac->evp_ctx, data, datalen);
HMAC_Final(&mac->evp_ctx, m, NULL);
HMAC_Final(&mac->evp_ctx, u.m, NULL);
break;
case SSH_UMAC:
put_u64(nonce, seqno);
umac_update(mac->umac_ctx, data, datalen);
umac_final(mac->umac_ctx, m, nonce);
umac_final(mac->umac_ctx, u.m, nonce);
break;
case SSH_UMAC128:
put_u64(nonce, seqno);
umac128_update(mac->umac_ctx, data, datalen);
umac128_final(mac->umac_ctx, m, nonce);
umac128_final(mac->umac_ctx, u.m, nonce);
break;
default:
fatal("mac_compute: unknown MAC type");
}
return (m);
return (u.m);
}
void