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-rw-r--r--src/or/config.c2
-rw-r--r--src/or/or.h3
-rw-r--r--src/or/router.c4
3 files changed, 7 insertions, 2 deletions
diff --git a/src/or/config.c b/src/or/config.c
index b7613bdf9..15138f9d7 100644
--- a/src/or/config.c
+++ b/src/or/config.c
@@ -380,7 +380,7 @@ static config_var_t option_vars_[] = {
V(SocksPolicy, LINELIST, NULL),
VPORT(SocksPort, LINELIST, NULL),
V(SocksTimeout, INTERVAL, "2 minutes"),
- V(SSLKeyLifetime, INTERVAL, "365 days"),
+ V(SSLKeyLifetime, INTERVAL, "0"),
OBSOLETE("StatusFetchPeriod"),
V(StrictNodes, BOOL, "0"),
OBSOLETE("SysLog"),
diff --git a/src/or/or.h b/src/or/or.h
index a71468c1c..c7d259853 100644
--- a/src/or/or.h
+++ b/src/or/or.h
@@ -4008,7 +4008,8 @@ typedef struct {
*/
int DisableV2DirectoryInfo_;
- /** What expiry time shall we place on our SSL certs? */
+ /** What expiry time shall we place on our SSL certs? "0" means we
+ * should guess a suitable value. */
int SSLKeyLifetime;
} or_options_t;
diff --git a/src/or/router.c b/src/or/router.c
index c9c35f613..211366351 100644
--- a/src/or/router.c
+++ b/src/or/router.c
@@ -659,6 +659,10 @@ router_initialize_tls_context(void)
else if (!strcasecmp(options->TLSECGroup, "P224"))
flags |= TOR_TLS_CTX_USE_ECDHE_P224;
}
+ if (!lifetime) { /* we should guess a good ssl cert lifetime */
+ /* choose between 1 and 365 days */
+ lifetime = 1*24*3600 + crypto_rand_int(364*24*3600);
+ }
/* It's ok to pass lifetime in as an unsigned int, since
* config_parse_interval() checked it. */