| Commit message (Collapse) | Author | Age | Files | Lines |
|---|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
Re-key each encrypted flow's batch root periodically so a long-lived
flow never exhausts or over-uses a single root. The IRMd re-runs the
OAP exchange with the peer IRMd over the flow-update relay. The
per-flow re-keying state is tracked in the registry (reg_flow).
A re-key delivers one root seed from the OAP exchange. keyrot
immediately HKDF-expands it into 128 node keys (KR_NODES_SZ = 128 × 32
B) and wipes the root. Then each of the 128 node keys is itself a root
→ HKDF-expanded into 64 (2^KEY_NODE_BITS) leaf keys, forked per
direction; each leaf key is the actual AEAD key, good for 2^20 packets
(the low counter bits are its nonce/seq). If the number of keys runs
low, a re-key will be triggered (KEY_REKEY_WATERMARK).
The rekey is signalled out of band to the application. The rbuff ACL
is generalized into a flags word, so an RB_REKEY bit rides alongside
the access RB_RD/RB_WR and FLOWDOWN/FLOWPEER bits. The RD and WR bits
are revised ditching the fcntl historical weirdness. The seed is
pulled via flow_read/flow_write, installed with crypt_rekey(). TX
holds the old epoch until the peer is observed on the new one (or a
grace deadline elapses), promoted from both the read and write paths
so a recv-mostly flow still advances.
Also fix the FLOW_ACCEPT and FLOW_ALLOC handlers, which on a key-buffer
allocation failure returned from inside the cleanup-push region: that
leaked the reply message and skipped both the stack-key scrub and the
cleanup pop.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
Flow crypto signalled rotation with a single phase-parity bit, so a
loss burst that hid an even number of rotations went unnoticed and
wedged the flow for good.
Each packet now carries a small cleartext selector naming its key
directly, so a receiver that falls behind recovers on the next packet
instead of getting stuck.
The selector also serves as the AEAD nonce and is authenticated as
associated data (AAD). Key rotation moves into a new backend-agnostic
keyrot module that rotates sub-keys to bound AEAD usage while
preserving forward secrecy.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
Replace the linked-list cache with three timestamp-generation hash
buckets, each capped at OAP_REPLAY_MAX entries.
A bucket is an open-addressed hash set whose slots count as live only
while slot.gen equals the bucket generation, so a stale bucket clears
in O(1) by bumping its generation instead of being scanned and pruned.
On overflow the cache fails closed - it rejects the header rather than
evicting the oldest entry. Under flood, dropping a genuine entry would
let that header be replayed, so refusing new entries is the safer
degradation than evict-oldest (fail-open) behaviour.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
OAP accepted requests and responses without a certificate even when
the peer was expected to authenticate. An on-path attacker could
strip the certificate and signature from a flow allocation response
and substitute its own key exchange, silently downgrading the
handshake to unauthenticated.
Add an auth=required|optional policy to enc.conf, enforced per role: a
client config requires the server to present a valid certificate, a
server config requires the same from the client. Default is required
for client side (https), optional server side. The client side default
can be changed via OAP_CLIENT_AUTH_DEFAULT for testing.
Replace the bare 'none' keyword with encryption=none, which disables
encryption only: the digest and the authentication policy are kept, so
authenticated but unencrypted flows can be configured. Configs using
bare 'none' are now rejected.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
Add IPCP_ETH_SNDBUF/RCVBUF cmake build options so deployments can size
the AF_PACKET socket buffers without patching code. Drop the
O_NONBLOCK fcntl on the raw socket in favour of per-recvfrom
MSG_DONTWAIT so race-loser reader threads exit with EAGAIN without
spamming the log.
Track frame send failures and the SO_SNDBUF size in the eth/summary
RIB; log a one-shot warning when the kernel reports AF_PACKET drops.
Retry name queries up to NAME_QUERY_RETRIES times within
NAME_QUERY_TIMEO; a single lost ARP-style mgmt frame no longer fails
the query. Bump IRMd QUERY_TIMEOUT from 200 ms to 2200 ms so the IRMd
budget exceeds the new shim retry window.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
This allows bypassing the IPCP for local processes that share the same
packet pool, lowering latency between processes to comparable levels
as Unix sockets (RTT in the order of a microsecond).
For local processes, no IPCPs are needed:
$ irm b prog oping n oping
$ oping -l
Ouroboros ping server started.
New flow 64.
Received 64 bytes on fd 64.
The direct IPC can be disabled with the DISABLE_DIRECT_IPC build
flag. Note that this is needed for rumba 'local' experiments to
emulate network topologies. Without this flag all processes will just
communicate directly.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
|
|
|
This moves the build definitions back to src/ subdirectories
(CMakeLists.txt per component). Configuration and dependencies are
kept out of tree. Configuration options are bundled into cmake/config/
modules. Dependencies are grouped by component (system/, crypt/, eth/,
coverage/, etc.). It now consistently uses target-based commands
(target_include_directories, target_link_libraries) instead of global
include_directories(). Proper PRIVATE/PUBLIC visibility for executable
link libraries. CONFIG_OUROBOROS_DEBUG now properly set based on being
a valid debug config (not just checking the string name).
It also adds OuroborosTargets export for find_package() support and
CMake package config files (OuroborosConfig.cmake) for easier
integration with CMake projects.
The build logic now follows more idiomatic CMake practices with
configuration separated from target definitions.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
|
