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| author | Matthias Schiffer <mschiffer@universe-factory.net> | 2013-08-28 19:54:11 +0200 |
|---|---|---|
| committer | Matthias Schiffer <mschiffer@universe-factory.net> | 2013-08-28 19:54:11 +0200 |
| commit | 2343f5329c0d5e7d8073810e56577d944b7c518e (patch) | |
| tree | e7a44cf6184a94e03538f179c2d95ac54611ef31 /src/method_xsalsa20_poly1305.c | |
| parent | 6e63479b03df9c2189404fb631b1fbd4cab21186 (diff) | |
| download | fastd-2343f5329c0d5e7d8073810e56577d944b7c518e.tar fastd-2343f5329c0d5e7d8073810e56577d944b7c518e.zip | |
ec25519: ensure old sessions are invalidated quickly after a new one has been established
Diffstat (limited to 'src/method_xsalsa20_poly1305.c')
| -rw-r--r-- | src/method_xsalsa20_poly1305.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/method_xsalsa20_poly1305.c b/src/method_xsalsa20_poly1305.c index d0d31f4..395f322 100644 --- a/src/method_xsalsa20_poly1305.c +++ b/src/method_xsalsa20_poly1305.c @@ -129,6 +129,14 @@ static bool method_session_want_refresh(fastd_context_t *ctx, fastd_method_sessi return timespec_after(&ctx->now, &session->refresh_after); } +static void method_session_superseded(fastd_context_t *ctx, fastd_method_session_state_t *session) { + struct timespec valid_max = ctx->now; + valid_max.tv_sec += ctx->conf->key_valid_old; + + if (timespec_after(&session->valid_till, &valid_max)) + session->valid_till = valid_max; +} + static void method_session_free(fastd_context_t *ctx UNUSED, fastd_method_session_state_t *session) { if(session) { secure_memzero(session, sizeof(fastd_method_session_state_t)); @@ -231,6 +239,7 @@ const fastd_method_t fastd_method_xsalsa20_poly1305 = { .session_is_valid = method_session_is_valid, .session_is_initiator = method_session_is_initiator, .session_want_refresh = method_session_want_refresh, + .session_superseded = method_session_superseded, .session_free = method_session_free, .encrypt = method_encrypt, |