Commit Graph

328 Commits

Author SHA1 Message Date
akwizgran a9a81f0870 Removed unnecessary calls to MessageDigest.reset(). 2011-12-07 13:37:13 +00:00
akwizgran 1c41ffa7af Don't accept empty acks, batches or offers. 2011-12-07 13:32:17 +00:00
akwizgran 495baf8c70 BATCH_ID and MESSAGE_ID don't need to be structs. 2011-12-07 00:38:14 +00:00
akwizgran b7c3224618 Decouple the database from IO.
This will enable asynchronous access to the database for IO threads.
2011-12-07 00:23:35 +00:00
akwizgran e24a3218ca Moved message verification and DB writes off the IO thread. 2011-12-05 22:52:00 +00:00
akwizgran ab722f9371 Minor refactoring. 2011-12-02 16:32:50 +00:00
akwizgran 726799d848 Check that padding is set to zero. 2011-12-02 16:21:20 +00:00
akwizgran 4ab5dfcac0 Allow empty frames. 2011-12-02 16:10:44 +00:00
akwizgran c8338f9866 Connection readers and writers don't need the connection context. 2011-12-02 14:23:45 +00:00
akwizgran 51d58fadad Include the frame number in the header.
This ensures the frame number is covered by the MAC, cleanly
separating encryption from authentication (previously we depended on
the encryption layer to garble frames if they were reordered).
2011-12-02 13:37:44 +00:00
akwizgran 14d5e6fe64 Replaced encrypted IVs with pseudo-random tags. 2011-12-02 12:57:39 +00:00
akwizgran f3fdd85996 Renamed "encrypted IVs" as "tags" (actual crypto changes to follow). 2011-12-02 12:02:55 +00:00
akwizgran f7360cddde Renamed "user-defined types" as "structs" in the serialisation format. 2011-12-02 11:36:45 +00:00
akwizgran 28b9e399ae Don't swallow interrupts. 2011-12-01 19:49:22 +00:00
akwizgran 42430272f4 Removed the initiator flag from the IV (no longer needed with the new
key derivation rules).
2011-11-28 17:34:50 +00:00
akwizgran b72a90be21 String caches its hash code, so prefer HashMap to TreeMap. 2011-11-28 15:40:16 +00:00
akwizgran aefa7798e1 One more unit test for the road... 2011-11-24 22:12:05 +00:00
akwizgran 9345b5c71b Avoid DB lookups where possible. 2011-11-24 22:09:04 +00:00
akwizgran ff8010a945 Merge branch 'refs/heads/master' of ssh://akwizgran@briar.git.sourceforge.net/gitroot/briar/prototype 2011-11-24 14:59:04 +00:00
akwizgran 8068fa0d38 Don't keep connection windows in memory. 2011-11-24 13:56:58 +00:00
akwizgran 214b274ee5 Removable drive monitor for OS X 10.4 (JNotify requires at least 10.5). 2011-11-19 18:09:10 +00:00
akwizgran 3dc8a590c7 Use a native window to catch shutdown events. 2011-11-19 15:45:23 +01:00
akwizgran 046becd388 Shutdown manager (untested on Windows). 2011-11-18 17:13:55 +00:00
akwizgran dacaa4566d Minor protocol refactoring. 2011-11-18 11:27:34 +00:00
akwizgran 2b45cf0dd1 Accept connections asynchronously. 2011-11-17 18:59:34 +00:00
akwizgran 27a3f6e497 Erase known copies of keys (unit tests ensure we don't end up using
zeroed keys).
2011-11-17 09:54:24 +00:00
akwizgran 66d973bcdd Ignore expected IVs that arrive by the wrong transport.
This prevents an attacker from replaying connections to test whether a
transport endpoint has the same owner as an endpoint on another
transport (eg probing a Bluetooth device to see whether it has the
same owner as a given internet host).
2011-11-17 09:24:28 +00:00
akwizgran 4da7a685cd Minor code cleanups. 2011-11-16 18:15:32 +00:00
akwizgran 01dd658200 Keep the connection windows in memory. 2011-11-16 17:57:56 +00:00
akwizgran f10512d787 Erase keys after using them. (Copies created by ciphers, etc, may
still exist.)
2011-11-16 16:22:35 +00:00
akwizgran ece03038f4 Unit test for key derivation. 2011-11-16 15:56:54 +00:00
akwizgran a13a1769e5 Unit test for key derivation. 2011-11-16 15:54:17 +00:00
akwizgran f6ae4734ce Forward secrecy.
Each connection's keys are derived from a secret that is erased after
deriving the keys and the secret for the next connection.
2011-11-16 15:35:16 +00:00
akwizgran d02a68edfc Return a connection context for outgoing connections (the secret will
be included in this context in the near future).
2011-11-15 17:47:30 +00:00
akwizgran fabdaf5957 Remove transport ID from connection context. 2011-11-15 17:32:31 +00:00
akwizgran 9220bb3426 Key derivation function based on NIST SP 800-108. 2011-11-15 17:19:11 +00:00
akwizgran 6a15c03e81 Store the incoming and outgoing secrets separately. 2011-11-15 16:07:14 +00:00
akwizgran f41d48eb9f Made secret keys erasable from memory. 2011-11-15 14:43:06 +00:00
akwizgran 23be7fd876 Removed double-encryption of shared secrets. 2011-11-15 14:09:28 +00:00
akwizgran df054b1743 Store each connection window slot as a database row.
This is less memory-efficient but necessary for the coming forward
secrecy changes.
2011-11-15 13:08:20 +00:00
akwizgran cf49a28c95 Replaced SHA-256 with SHAd-256 to prevent length extension attacks. 2011-11-15 11:11:31 +00:00
akwizgran effa5c9d8e Throw checked exception if concurrent attempts are made to remove a
contact.
2011-11-15 09:51:51 +00:00
akwizgran 6fd8493d3d Singleton lists and singleton sets aren't equal, so use lists
consistently.
2011-11-15 09:42:21 +00:00
akwizgran 2ad15518a5 Return transports that have no properties. 2011-11-15 09:00:51 +00:00
akwizgran 72be34768b Minor refactoring. 2011-11-14 22:14:52 +00:00
akwizgran 73aa7d14d7 Split transport identifiers into two: TransportId (globally unique)
and TransportIndex (locally unique).

This is the first step towards forward secrecy. Also removed the
Writable interface and unnecessary user-defined types, moved various
constants to ProtocolConstants and renamed some classes.
2011-11-14 21:40:05 +00:00
akwizgran 85e327035c Fixed some comments. 2011-11-08 12:44:42 +00:00
akwizgran 29eb900822 Non-JUnit tests for LAN socket plugin. 2011-10-30 22:39:20 +00:00
akwizgran d1676781f0 Fixed test expectations. 2011-10-30 21:42:55 +00:00
akwizgran 70c7a9c077 Factored out non-Bluetooth-specific code. 2011-10-29 09:47:19 +01:00