Allow omitting OID name/description

[pkolbus]

Description

On small systems (e.g. Cortex-M4) every KB of code footprint counts, and the OID name and description string tend to only be needed in certain debugging/tools contexts (e.g. mbedtls_x509_crt_info()). I've noticed that when building with -ffunction-sections, -fdata-sections, and gc-sections, there are a few KB of wasted code space because constant strings are entangled to types in a way that makes it hard for a linker to omit them.

I have a similar approach in mind as Mbed-TLS/mbedtls#2315, and propose the configuration MBEDTLS_OID_NAMES. If you agree I can get started on the PR.

Note that because mbed TLS now uses mbed-crypto, this issue is a dependency for that PR.

Issue request type

[ ] Question
[X] Enhancement
[ ] Bug

[ciarmcom]

Internal Jira reference: https://jira.arm.com/browse/IOTCRYPT-787

[adbridge]

Apologies, this was closed in error by the automated bot - re-opening.

[gilles-peskine-arm]

This will finally be resolved through Mbed-TLS/mbedtls#9379 in TF-PSA-Crypto 1.0 and Mbed TLS 4.0.