Add support for no malloc with wc_CheckCertSigPubKey

[AlexLanzano]

Description

• Add support for WOLFSSL_NO_MALLOC in wc_CheckCertSigPubKey. Fixes ZD 19593
• Refactor DSA ASN.1 decode in ConfirmSignature.
• Cleanup indent in types.h.
• Move struct CertSignCtx to types.h.
• Move WC_ENABLE_ASYM_KEY_IMPORT and WC_ENABLE_ASYM_KEY_EXPORT to settings.h.

Testing

Checklist

• added tests
• updated/added doxygen
• updated appropriate READMEs
• Updated manual and documentation

[SparkiDev]

retest this please
Hudson error and fips failure

[dgarske]

Retest this please

[dgarske]

Customer is happy with this work, but is small typo in asn.c:18418.

[Copilot]

Pull Request Overview

This PR adds support for the WOLFSSL_NO_MALLOC configuration in the certificate signature checking code and refactors the DSA ASN.1 decoding logic. It also cleans up indentation, reformats macros in types.h, reorganizes memory allocation wrappers across multiple files, and moves the CertSignCtx struct from asn.h to types.h.

Reviewed Changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
wolfssl/wolfcrypt/types.h	Reformatted error messages and macro definitions for better multi-line readability.
wolfssl/wolfcrypt/settings.h	Added conditional definitions for WC_ENABLE_ASYM_KEY_EXPORT and WC_ENABLE_ASYM_KEY_IMPORT.
wolfssl/wolfcrypt/asn_public.h	Removed duplicate definitions for asymmetrical key export/import macros.
wolfssl/wolfcrypt/asn.h	Added WOLFSSL_NO_MALLOC guards around allocation/free calls and removed CertSignCtx definitions.
wolfcrypt/test/test.c	Suppressed an unused variable warning via an explicit (void) cast.
wolfcrypt/src/sha256.c	Adjusted conditional compilation directives to account for WOLFSSL_NO_MALLOC.
wolfcrypt/src/hash.c	Updated allocation conditional logic similarly to ensure proper memory management.
wolfcrypt/src/asn.c	Wrapped memory allocation and free calls with WOLFSSL_NO_MALLOC checks and refactored DSA decode.

Comments suppressed due to low confidence (2)

wolfcrypt/src/asn.c:17921

• The allocation calls in ConfirmSignature are repeatedly wrapped with #ifndef WOLFSSL_NO_MALLOC. Consider defining a helper macro or inline function to reduce duplication and improve clarity.

sigCtx->digest = (byte*)XMALLOC(WC_MAX_DIGEST_SIZE, sigCtx->heap, DYNAMIC_TYPE_DIGEST);

wolfcrypt/src/asn.c:17507

• There are multiple conditional wrappers around memory free calls (and corresponding allocations) due to WOLFSSL_NO_MALLOC. A brief inline comment explaining the rationale for these wrappers would improve future maintainability.

XFREE(sigCtx->sigCpy, sigCtx->heap, DYNAMIC_TYPE_SIGNATURE);