Add periodic timer for expiring old onion keys.

This patch adds a new timer that is executed when it is time to expire
our current set of old onion keys. Because of proposal #274 this can no
longer be assumed to be at the same time we rotate our onion keys since
they will be updated less frequently.

See: https://bugs.torproject.org/21641

1 files changed, 1 insertions, 0 deletions

diff --git a/src/or/router.h b/src/or/router.h
index 55a3927998..a02488f37a 100644
--- a/src/or/router.h
+++ b/src/or/router.h
@@ -27,6 +27,7 @@ crypto_pk_t *get_my_v3_authority_signing_key(void);
 authority_cert_t *get_my_v3_legacy_cert(void);
 crypto_pk_t *get_my_v3_legacy_signing_key(void);
 void dup_onion_keys(crypto_pk_t **key, crypto_pk_t **last);
+void expire_old_onion_keys(void);
 void rotate_onion_key(void);
 crypto_pk_t *init_key_from_file(const char *fname, int generate,
                                     int severity, int log_greeting);