[or-cvs] r13415: Fix bug in last patch that made secret_to_key crash. (in tor/trunk: . src/common)

[nickm@xxxxxxxx]

Author: nickm
Date: 2008-02-07 11:10:36 -0500 (Thu, 07 Feb 2008)
New Revision: 13415

Modified:
   tor/trunk/
   tor/trunk/src/common/crypto.c
Log:
 r17964@catbus:  nickm | 2008-02-07 10:45:02 -0500
 Fix bug in last patch that made secret_to_key crash.



Property changes on: tor/trunk
___________________________________________________________________
 svk:merge ticket from /tor/trunk [r17964] on 8246c3cf-6607-4228-993b-4d95d33730f1

Modified: tor/trunk/src/common/crypto.c
===================================================================
--- tor/trunk/src/common/crypto.c	2008-02-07 16:10:33 UTC (rev 13414)
+++ tor/trunk/src/common/crypto.c	2008-02-07 16:10:36 UTC (rev 13415)
@@ -2093,7 +2093,7 @@
 {
   crypto_digest_env_t *d;
   uint8_t c;
-  size_t count;
+  size_t count, tmplen;
   char *tmp;
   tor_assert(key_out_len < SIZE_T_CEILING);
 
@@ -2105,7 +2105,8 @@
   tor_assert(key_out_len <= DIGEST_LEN);
 
   d = crypto_new_digest_env();
-  tmp = tor_malloc(8+secret_len);
+  tmplen = 8+secret_len;
+  tmp = tor_malloc(tmplen);
   memcpy(tmp,s2k_specifier,8);
   memcpy(tmp+8,secret,secret_len);
   secret_len += 8;
@@ -2119,7 +2120,7 @@
     }
   }
   crypto_digest_get_digest(d, key_out, key_out_len);
-  memset(tmp, 0, 8+secret_len);
+  memset(tmp, 0, tmplen);
   tor_free(tmp);
   crypto_free_digest_env(d);
 }