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Posted to commits@nuttx.apache.org by "raiden00pl (via GitHub)" <gi...@apache.org> on 2026/10/14 10:36:46 UTC

[PR] crypto/mbedtls: Allow a minimal crypto-only configuration. [nuttx-apps]

raiden00pl opened a new pull request, #3848:
URL: https://github.com/apache/nuttx-apps/pull/3848

   ## Summary
   
   Mbed TLS defaults suit full TLS stacks. Libraries that only need a few primitives, such as NimBLE, still build every cipher and curve, and the generic cipher layer links them all.
   
   Add MBEDTLS_MINIMAL, which turns all optional module defaults off so only selected or explicitly enabled options are built. Make the modules that were always defined in mbedtls_config.h configurable, defaulting to enabled unless MBEDTLS_MINIMAL is set. Add options for MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH, MBEDTLS_AES_FEWER_TABLES and MBEDTLS_BLOCK_CIPHER_NO_DECRYPT.
   
   Without MBEDTLS_MINIMAL the configuration is unchanged.
   
   ## Impact
   
   mbedtls is required for new nimble, but without size optimization it takes huge amount of memory
   
   ## Testing
   
   Tested: nrf54l15-tag NimBLE mesh build; the linked Mbed TLS for NimBLE shrinks from 57 KB flash and 9 KB RAM to about 21 KB flash and no RAM.
   
   
   


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Re: [PR] crypto/mbedtls: Allow a minimal crypto-only configuration. [nuttx-apps]

Posted by "jerpelea (via GitHub)" <gi...@apache.org>.
jerpelea commented on PR #3848:
URL: https://github.com/apache/nuttx-apps/pull/3848#issuecomment-6213931735

   Thanks for this addition


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Re: [PR] crypto/mbedtls: Allow a minimal crypto-only configuration. [nuttx-apps]

Posted by "acassis (via GitHub)" <gi...@apache.org>.
acassis merged PR #3848:
URL: https://github.com/apache/nuttx-apps/pull/3848


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