Removes the legacy ASN parser override (WOLFSSL_ASN_ORIGINAL) from …

[miyazakh]

Renesas RA6M4: Remove WOLFSSL_ASN_ORIGINAL and update SCE certificate data

Summary

This PR removes the legacy ASN parser override (WOLFSSL_ASN_ORIGINAL) from the RA6M4 demo project, cleans up the now-dead RsaPublicKeyDecodeRawIndex() function from asn_orig.c, refreshes the pre-computed SCE certificate signature data, and corrects several inaccuracies in the README.

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Changes

IDE/Renesas/e2studio/RA6M4/common/user_settings.h

• Remove #define WOLFSSL_ASN_ORIGINAL. The RA6M4 project now uses the current wolfSSL ASN parser instead of the legacy fallback.

wolfcrypt/src/asn_orig.c

• Remove the static helper RsaPublicKeyDecodeRawIndex() (compiled only under WOLFSSL_RENESAS_TSIP_TLS or WOLFSSL_RENESAS_FSPSM_TLS). This function became dead code once WOLFSSL_ASN_ORIGINAL was removed from the project settings.

IDE/Renesas/e2studio/RA6M4/test/key_data/key_data_sce.c

• Update pre-computed SCE signature buffers ca_cert_der_sign and ca_ecc_cert_der_sign to match the renewed test CA certificates used by the RA6M4 demo.

IDE/Renesas/e2studio/RA6M4/README.md

• Fix linker script filename: fsp.ld -> fsp_gen.ld.
• Correct RTT control block address examples to 0x20000000 (was 0x20023648 / 0x20023000).
• Fix SERVER_IP configuration reference: points to wolfssl_demo.h instead of wolf_client.c.

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Test Plan

• Build the test_RA6M4 project in e2studio -- no errors expected with WOLFSSL_ASN_ORIGINAL removed.
• Flash to RA6M4 hardware and confirm TLS handshake succeeds with the updated SCE certificate signature data.
• Verify both RSA and ECC certificate paths are handled correctly by the new ASN parser.

Checklist

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

[Copilot]

Pull request overview

This PR updates the Renesas RA6M4 e2studio demo to rely on the current wolfSSL ASN.1 parser (by removing the project-level WOLFSSL_ASN_ORIGINAL override), cleans up now-dead legacy ASN parsing code, refreshes SCE certificate signature test data, and corrects RA6M4 README guidance.

Changes:

• Remove WOLFSSL_ASN_ORIGINAL from the RA6M4 demo’s user_settings.h so the project uses the current ASN parser.
• Delete the unused RsaPublicKeyDecodeRawIndex() helper from wolfcrypt/src/asn_orig.c.
• Update pre-computed SCE signature buffers in key_data_sce.c and fix several README instructions/values for the RA6M4 demo.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
wolfcrypt/src/asn_orig.c	Removes an unused RSA public-key decode helper from the legacy ASN parser source.
IDE/Renesas/e2studio/RA6M4/test/key_data/key_data_sce.c	Refreshes the stored 256-byte SCE signature buffers for the demo’s CA certificate data.
IDE/Renesas/e2studio/RA6M4/README.md	Updates RA6M4 documentation (linker script name, RTT addresses, and IP configuration references).
IDE/Renesas/e2studio/RA6M4/common/user_settings.h	Drops the RA6M4-only WOLFSSL_ASN_ORIGINAL define so the current ASN parser is used.

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[github-actions]

MemBrowse Memory Report

No memory changes detected for:

• gcc-arm-cortex-m4
• gcc-arm-cortex-m4-baremetal
• gcc-arm-cortex-m4-min-ecc
• gcc-arm-cortex-m4-tls12

[wolfSSL-Fenrir-bot]

Fenrir Automated Review — PR #10581

Scan targets checked: wolfcrypt-bugs, wolfcrypt-rs-bugs, wolfcrypt-src

Findings: 1
1 finding(s) posted as inline comments (see file-level comments below)

This review was generated automatically by Fenrir. Findings are non-blocking.