Add option to use IV with DHUK wrapping, add user pin argument

[JacobBarthelmeh]

No description provided.

[Copilot]

Pull Request Overview

This pull request adds support for initialization vectors (IV) when using DHUK (Device Hardware Unique Key) AES key wrapping functionality on STM32U5 devices, and enhances the example program with command-line argument support for user PIN specification.

• Introduces a new attribute CKA_WOLFSSL_DHUK_IV for storing IV data with DHUK objects
• Updates AES initialization functions to set DHUK IV when available
• Modifies the key wrapping mechanism to accept IV parameters and use CBC mode instead of ECB
• Adds command-line argument parsing to the example program for user PIN input

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 3 comments.

File	Description
wolfpkcs11/pkcs11.h	Defines new CKA_WOLFSSL_DHUK_IV attribute for DHUK IV support
src/internal.c	Adds DHUK IV fields to object structure and implements IV handling in AES operations
src/crypto.c	Registers the new DHUK IV attribute type and updates key wrapping to support IV parameters
examples/stm32_dhuk_aes_key.c	Refactors to support command-line user PIN input and demonstrates IV usage with CBC mode

Comments suppressed due to low confidence (1)

src/crypto.c:700

• The preprocessor directive comment change from WOLFPKCS11_DHUK to WOLFSSL_STM32U5_DHUK should be consistent throughout the codebase to avoid confusion.

            rv = WP11_Object_GetAttr(obj, CKA_SENSITIVE, &getVar, &getVarLen);

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