diff options
Diffstat (limited to 'src/vnet/ipsec/ikev2.c')
| -rw-r--r-- | src/vnet/ipsec/ikev2.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/src/vnet/ipsec/ikev2.c b/src/vnet/ipsec/ikev2.c index 296654ec..a3dc7b87 100644 --- a/src/vnet/ipsec/ikev2.c +++ b/src/vnet/ipsec/ikev2.c @@ -17,6 +17,7 @@ #include <vnet/vnet.h> #include <vnet/pg/pg.h> #include <vppinfra/error.h> +#include <vppinfra/random.h> #include <vnet/udp/udp.h> #include <vnet/ipsec/ipsec.h> #include <vnet/ipsec/ikev2.h> @@ -1595,8 +1596,16 @@ ikev2_create_tunnel_interface (vnet_main_t * vnm, ikev2_sa_t * sa, + sa->profile->lifetime; if (sa->profile->lifetime_jitter) { + // This is not much better than rand(3), which Coverity warns + // is unsuitable for security applications; random_u32 is + // however fast. If this perturbance to the expiration time + // needs to use a better RNG then we may need to use something + // like /dev/urandom which has significant overhead. + u32 rnd = (u32) (vlib_time_now (vnm->vlib_main) * 1e6); + rnd = random_u32 (&rnd); + child->time_to_expiration += - 1 + (rand () % sa->profile->lifetime_jitter); + 1 + (rnd % sa->profile->lifetime_jitter); } } |