diff options
| author | Dimitri Staessens <dimitri@ouroboros.rocks> | 2026-06-13 10:18:17 +0200 |
|---|---|---|
| committer | Sander Vrijders <sander@ouroboros.rocks> | 2026-06-29 08:32:58 +0200 |
| commit | 22e2380b09730a2f18deefd688585edb430d3299 (patch) | |
| tree | 1fc03db35d93833220482f9c5f70d4c9d2d618c1 /cmake/config/global.cmake | |
| parent | df14e6cc81c296d91e9124cd09f25a83defb522f (diff) | |
| download | ouroboros-22e2380b09730a2f18deefd688585edb430d3299.tar.gz ouroboros-22e2380b09730a2f18deefd688585edb430d3299.zip | |
lib: Harden symmetric-key rotation
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>
Diffstat (limited to 'cmake/config/global.cmake')
| -rw-r--r-- | cmake/config/global.cmake | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/cmake/config/global.cmake b/cmake/config/global.cmake index 0ac256bb..1e172724 100644 --- a/cmake/config/global.cmake +++ b/cmake/config/global.cmake @@ -25,8 +25,16 @@ set(SHM_LOCKFILE_NAME "/${SHM_PREFIX}.lockfile" CACHE INTERNAL # Secure memory configuration set(IRMD_SECMEM_MAX 1048576 CACHE STRING "IRMd secure heap size") -set(PROC_SECMEM_MAX 1048576 CACHE STRING "Process secure heap size") -set(SECMEM_GUARD 32 CACHE STRING "Secure heap min size") +# ~8 KiB secure heap per encrypted flow (cur+prev node slabs); the total +# is rounded up to a power of two for the OpenSSL secure-heap allocator. +set(PROC_SECMEM_FLOWS 512 CACHE STRING + "Max concurrent encrypted flows the per-process secure heap is sized for") +math(EXPR PROC_SECMEM_NEED "${PROC_SECMEM_FLOWS} * 8192") +set(PROC_SECMEM_MAX 4096) +while(PROC_SECMEM_MAX LESS PROC_SECMEM_NEED) + math(EXPR PROC_SECMEM_MAX "${PROC_SECMEM_MAX} * 2") +endwhile() +set(SECMEM_MINSIZE 32 CACHE STRING "Secure heap min alloc size") # Container/deployment options set(BUILD_CONTAINER FALSE CACHE BOOL |