Add wc_ecc_key_new_ex

[holtrop-wolfssl]

Description

Add wc_ecc_key_new_ex

Rust wrapper: use wc_ecc_key_new_ex for ECC when available.

Fixes F-8300.

Testing

How did you test?

Checklist

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

[Copilot]

Pull request overview

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Add the new wc_ecc_key_new_ex() C API and update the Rust wrapper (and HPKE internals) to use it when available, enabling explicit devId selection and avoiding post-allocation patching.

Changes:

• Introduce wc_ecc_key_new_ex(void* heap, int devId) and refactor wc_ecc_key_new() to delegate to it.
• Update Rust wrapper to call wc_ecc_key_new_ex() when detected via build-time scanning.
• Switch HPKE private-key copy path to allocate ECC keys with explicit devId.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
wrapper/rust/wolfssl-wolfcrypt/src/ecc.rs	Use wc_ecc_key_new_ex when available; restrict devId patching to fallback builds.
wrapper/rust/wolfssl-wolfcrypt/build.rs	Detect wc_ecc_key_new_ex and enable cfg(ecc_key_new_ex) for Rust.
wolfssl/wolfcrypt/ecc.h	Expose new public API wc_ecc_key_new_ex.
wolfcrypt/src/ecc.c	Implement wc_ecc_key_new_ex and refactor wc_ecc_key_new to call it.
wolfcrypt/src/hpke.c	Allocate ECC key copies using wc_ecc_key_new_ex with an explicit devId.
doc/dox_comments/header_files/ecc.h	Document wc_ecc_key_new_ex and correct wc_ecc_key_new return semantics.

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[github-actions]

MemBrowse Memory Report

gcc-arm-cortex-m0plus

• FLASH: .text +12 B (+0.0%, 64,847 B / 262,144 B, total: 25% used)

gcc-arm-cortex-m3

• FLASH: .text +8 B (+0.0%, 123,531 B / 262,144 B, total: 47% used)

gcc-arm-cortex-m4-pkcs7

• FLASH: .text +64 B (+0.0%, 214,830 B / 262,144 B, total: 82% used)

gcc-arm-cortex-m7-pq

• FLASH: .text +64 B (+0.0%, 298,524 B / 1,048,576 B, total: 28% used)

linuxkm-pie

• Data: __patchable_function_entries +8 B (+0.0%, 26,568 B)

linuxkm-standard

• Data: __patchable_function_entries +8 B (+0.0%, 49,384 B)
  No memory changes detected for:
• gcc-arm-cortex-m4
• gcc-arm-cortex-m4-baremetal
• gcc-arm-cortex-m4-crypto-only
• gcc-arm-cortex-m4-dtls13
• gcc-arm-cortex-m4-min-ecc
• gcc-arm-cortex-m4-openssl-compat
• gcc-arm-cortex-m4-pq
• gcc-arm-cortex-m4-rsa-only
• gcc-arm-cortex-m4-sp-math
• gcc-arm-cortex-m4-tls12
• gcc-arm-cortex-m4-tls13
• gcc-arm-cortex-m7
• gcc-arm-cortex-m7-tls13
• stm32-sim-stm32h753

[holtrop-wolfssl]

retest this please (Calling Pipeline was cancelled, build removed)

[holtrop-wolfssl]

retest this please (git ssh permission problem)