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| author | Damien Miller <djm@mindrot.org> | 2010-07-16 13:57:51 +1000 |
|---|---|---|
| committer | Damien Miller <djm@mindrot.org> | 2010-07-16 13:57:51 +1000 |
| commit | 8a0268f1b3f62292d4124f8d158e0587c4f7c330 (patch) | |
| tree | 43493a3202569a2939f5616127d9de8689613a7b /auth-rsa.c | |
| parent | d0244d498ba970b9d9348429eaf7a4a0ef2b903c (diff) | |
| download | openssh-git-8a0268f1b3f62292d4124f8d158e0587c4f7c330.tar.gz | |
- djm@cvs.openbsd.org 2010/07/13 11:52:06
[auth-rsa.c channels.c jpake.c key.c misc.c misc.h monitor.c]
[packet.c ssh-rsa.c]
implement a timing_safe_cmp() function to compare memory without leaking
timing information by short-circuiting like memcmp() and use it for
some of the more sensitive comparisons (though nothing high-value was
readily attackable anyway); "looks ok" markus@
Diffstat (limited to 'auth-rsa.c')
| -rw-r--r-- | auth-rsa.c | 4 |
1 files changed, 2 insertions, 2 deletions
@@ -1,4 +1,4 @@ -/* $OpenBSD: auth-rsa.c,v 1.76 2010/05/11 02:58:04 djm Exp $ */ +/* $OpenBSD: auth-rsa.c,v 1.77 2010/07/13 11:52:06 djm Exp $ */ /* * Author: Tatu Ylonen <ylo@cs.hut.fi> * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland @@ -116,7 +116,7 @@ auth_rsa_verify_response(Key *key, BIGNUM *challenge, u_char response[16]) MD5_Final(mdbuf, &md); /* Verify that the response is the original challenge. */ - if (memcmp(response, mdbuf, 16) != 0) { + if (timing_safe_cmp(response, mdbuf, 16) != 0) { /* Wrong answer. */ return (0); } |