Hi, We are using the following API from sys/random.h to generate entropy in our module. int getentropy(void* buffer, size_t size); Could you confirm if this API internally uses a non-physical entropy source and adhere to SP800-90B as the following document says: https://csrc.nist.gov/CSRC/media/projects/cryptographic-module-validation-program/documents/entropy/E181_PublicUse.pdf

We are trying to update the network system extension on macOS12.4. But sysextd is crashing and failing to update the system extension. I am sharing the sysextd logs and crash report here: sysextd console logs: sysextd_logs.txt sysextd crash report: sysextd_crash.txt I am still working to figure out what is happening right now. Can somebody help me in resolving this issue?

Hi, I enabled FileVault on macOS10.15.7. Then upgraded OS to latest Big Sur. After upgrade is completed, I observed that the startup volume UUID got changed. In my scenario, the startup volume is Macintosh HD whose mount point is '/'. Also, it contains Data volume too because it is 10.15.x. It is a bug or expected behaviour?

We have two different products. Both have implemented network system extensions. One product implemented a content filter provider with both socket and packet level filtering and with rule to filter all data. That means every network connection goes through this provider. The second product implemented App Proxy provider which proxies non-SSL POP3 mail traffic and diverts that connection to local process for further processing and then local process makes a connection outside and sends out to that destination after the required processing. We are currently seeing an issue where both providers are running. The connections made by App proxy provider are being broken in the presence of Content Filter provider. When content filter provider is deleted from network preferences, then we see our app proxy provider is working as expected. Environment: macOS Big Sur 11.2 Can you help me in recognising what is going wrong here?