ouroboros/src/irmd/oap/tests, branch 0.24.0

irmd: Reject rekey without KEX config

2026-07-19T09:44:35+00:00

A rekey without KEX config should be rejected rather than downgrading to plaintext. Tests added. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders

irmd: Fix oap_test suppression list

2026-07-19T09:44:35+00:00

he crypto-disabled branch of the test driver referenced two tests that were folded into test_oap_ts_reject_all() and missed newer ones. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders

irmd: Move AUTH test macros to OAP common.h

2026-07-08T09:02:24+00:00

The ML-DSA OAP test defined CLI_AUTH/NO_CLI_AUTH and passed them for the srv_auth parameters of the re-key tests. Rename to the neutral AUTH/NO_AUTH already used by oap_test.c and move the pair to the shared common.h. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders

irmd: Test OAP KEM re-key floor

2026-07-08T09:02:23+00:00

Add tests for two client-encap KEM properties the server enforces: reject a client KDF below the server floor, and confirm a re-key forces ephemeral server-encap. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders

irmd: Expand and parametrize OAP tests

2026-07-08T09:02:23+00:00

Parametrize the re-key roundtrips over the full (srv_auth, cli_auth) matrix. Add a KEM re-key axis, request-ID and cleartext-echo tamper tests, and an unsupported cipher/kdf/digest NID cluster guarded by an assertion. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders

build: Fix OpenSSL version check for PQC

2026-07-08T09:02:12+00:00

ML-KEM, ML-DSA and SLH-DSA all landed in OpenSSL 3.5.0, not 3.4.0. ML-KEM+ML-DSA and SLH-DSA can be disabled by DISABLE_ML / DISABLE_SLH. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders

oap: Rename kex_config loaders to sec_config

2026-06-29T06:33:00+00:00

Leftover from the kex_config->enc_config->sec_config rename. Finished by renames load_kex_config and the cli/srv variants to load_sec_config, the kcfg variables to scfg, and fixes the "KEX config"/"encryption config" comments. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders

irmd: Harden OAP handshake and add cert-less re-key

2026-06-29T06:33:00+00:00

Adds support for: Server key confirmation: the session key is bound to the negotiated algorithm via the HKDF info. The server returns a key-confirmation tag (rsp_tag, replacing the bare request-hash echo), so a cipher downgrade or key desync is detected. The cleartext path keeps a request echo, compared in constant time. Sealed server identity: AEAD-seal the certificate, signature and piggybacked data in the encrypted response (kex and rsp_tag move ahead as AAD), hiding the server identity and response sizes. Cert-less re-key: let the client omit its certificate, verifying the peer against the cached certificate. On PQC flows, ephemeral server-encap KEX (preserving forward secrecy) is used, even if the original flow allocation was client-encap. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders

lib: Group sec_config authentication fields

2026-06-29T06:32:59+00:00

Nest the flat req_auth and cacert members of struct sec_config into a sub-struct a { req; cacert; }, keeping the authentication settings together. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders

irmd: Bound the OAP replay cache

2026-06-29T06:32:58+00:00

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 Signed-off-by: Sander Vrijders