[crypto, pka, stm32wb] Implement PKA interface and driver for stm32wb

[AlexLanzano]

No description provided.

[Copilot]

Pull request overview

Adds a public-key accelerator (PKA) “math primitives” API to wolfHAL and provides an STM32WB backend/driver, with board integration and a new hardware test suite for RSA-1024 raw primitives.

Changes:

• Introduces a new generic PKA API (wolfHAL/crypto/pka.h) and STM32WB PKA driver interface/implementation.
• Wires STM32WB55 Nucleo board support (base address, clock gate, init/deinit, build flags).
• Adds PKA hardware tests plus vector generation updates.

Reviewed changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
wolfHAL/platform/st/stm32wb55xx.h	Adds STM32WB55 PKA base/driver macros and RCC gate macro.
wolfHAL/crypto/stm32wb_pka.h	New STM32WB PKA driver header (lifecycle + primitive declarations).
wolfHAL/crypto/pka.h	New generic public-key math primitive API header.
wolfHAL/crypto/crypto.h	Adds a note about where public-key primitives live (needs fix per comments).
src/crypto/stm32wb_pka.c	New STM32WB PKA driver implementation and direct mapping for whal_Pka_*.
docs/writing_a_driver.md	Documents the new “Math Primitives” pattern and PKA design.
boards/stm32wb55xx_nucleo/board.mk	Enables pka test and defines WHAL_CFG_STM32WB_PKA_DIRECT_API_MAPPING.
boards/stm32wb55xx_nucleo/board.h	Adds WHAL_CFG_STM32WB_PKA_DEV initializer.
boards/stm32wb55xx_nucleo/board.c	Enables the PKA clock gate and calls PKA Init/Deinit in board bring-up.
tests/main.c	Adds conditional registration/execution of whal_Test_Pka().
tests/crypto/test_pka.c	New RSA-1024 KAT + round-trip tests using whal_Pka_* primitives.
tests/crypto/gen_test_vectors.py	Adds RSA raw primitive vectors generation (needs reference naming fix per comments).

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[Copilot]

Pull request overview

Copilot reviewed 12 out of 12 changed files in this pull request and generated 3 comments.

[Copilot]

Pull request overview

Copilot reviewed 12 out of 12 changed files in this pull request and generated 2 comments.