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[PQC] Add support for mlkem768x25519-sha256 key exchange method #1563

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@scott-xu scott-xu commented Dec 27, 2024

This PR adds support for mlkem768x25519-sha256 hybrid post-quantum key exchange method based on the FIPS 203 Module-Lattice Key Encapsulation mechanism (ML-KEM) combined with X25519 ECDH as described by https://www.ietf.org/archive/id/draft-kampanakis-curdle-ssh-pq-ke-05.html

OpenSSH added support for this key exchange method in release 9.9, see https://www.openssh.com/txt/release-9.9.

@scott-xu scott-xu marked this pull request as ready for review December 27, 2024 11:35
@@ -22,6 +22,22 @@ public void TearDown()
_remoteSshdConfig?.Reset();
}

[TestMethod]
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The OpenSSH at Ubuntu is not the latest version.
My local test passed with OpenSSH 9.9p1.

@scott-xu scott-xu force-pushed the kex_mlkem768x25519-sha256 branch 2 times, most recently from 2456def to 579b27c Compare December 29, 2024 13:28
@scott-xu scott-xu marked this pull request as draft January 2, 2025 12:36
@scott-xu scott-xu force-pushed the kex_mlkem768x25519-sha256 branch 2 times, most recently from 31bd6d5 to a86d117 Compare January 2, 2025 13:05
@scott-xu scott-xu force-pushed the kex_mlkem768x25519-sha256 branch from a86d117 to 8ad445e Compare January 2, 2025 13:10
@scott-xu scott-xu marked this pull request as ready for review January 2, 2025 13:17
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