Add mlkem1024nistp384-sha384 and mlkem768x25519-sha256

[ejohnstown]

1. Add the KEX algorithms mlkem1024nistp384-sha384 and mlkem768x25519-sha256.
2. Performed some comment and whitespace maintenance.
3. Updated the KEX test to test any KEX given the string with its name. Added the new KEX algorithms to the test.

This solves issue #757.

[Copilot]

Pull request overview

This pull request adds support for two new ML-KEM (post-quantum) hybrid key exchange algorithms to wolfSSH: mlkem1024nistp384-sha384 and mlkem768x25519-sha256. These algorithms combine traditional elliptic curve cryptography with post-quantum ML-KEM for enhanced security against future quantum computing threats.

Changes:

• Added support for two new hybrid KEX algorithms combining ML-KEM with traditional elliptic curves
• Refactored the KEX test infrastructure to accept algorithm names as parameters
• Updated documentation and comments for the new algorithms

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 7 comments.

File	Description
wolfssh/internal.h	Added conditional compilation flags, algorithm IDs, buffer size updates, and HandshakeInfo bitfield for the new ML-KEM algorithms
src/internal.c	Implemented client and server key agreement logic for the new algorithms, updated algorithm name mappings, hash functions, and prime curve lookups
src/ssh.c	Updated display text for ML-KEM algorithm identification
tests/kex.c	Refactored test to be algorithm-agnostic and added tests for the two new KEX algorithms

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

Pull request overview

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

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.