yamt opened a new issue, #16760: URL: https://github.com/apache/nuttx/issues/16760
### Description / Steps to reproduce the issue nuttx's rand() implementation is a bit poor and, with the default CONFIG_LIBC_RAND_ORDER=1, it seems to produce the same values for every 903 calls. 903 seems too small to me. i observed this when playing with mbedtls benchmark. mbedtls's programs/test/benchmark.c uses rand() for the entropy source. i guess it's ok because it's just a benchmark. with its default parameters, mbedtls_mpi_gen_prime happens to consume 231168 bytes random values, which is unfortunately a multiple of sizeof(int) * 903. it means successive mbedtls_mpi_gen_prime calls always produce identical primes. it makes mbedtls_rsa_gen_key run forever for its attempt to produce two different primes, which does never succeed. ### On which OS does this issue occur? [OS: Mac] ### What is the version of your OS? macOS 15.5 ### NuttX Version master ### Issue Architecture [Arch: xtensa] ### Issue Area [Area: OS Components] ### Host information esp32s3 ### Verification - [x] I have verified before submitting the report. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@nuttx.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
