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Add more PQC hybrid key exchange algorithms #7821

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Add more PQC hybrid key exchange algorithms #7821

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Commits on Oct 1, 2024

  1. Add more PQC hybrid key exchange algorithms 

    Add support for all remaining hybrid PQC + ECC hybrid key exchange
groups to match OQS. Next to two new combinations with SECP curves, this
mainly also adds support for combinations with X25519 and X448.

This also enables compatability with the PQC key exchange support in
Chromium browsers and Mozilla Firefox (hybrid Kyber768 and X25519; when
`WOLFSSL_KYBER_ORIGINAL` is defined).

In the process of extending support, some code and logic cleanup
happened. Furthermore, two memory leaks within the hybrid code path have
been fixed.

Signed-off-by: Tobias Frauenschläger <[email protected]>
    @Frauschi
    Frauschi committed Oct 1, 2024
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  2. Split PQC hybrid KEX from PQC-only KEX

    @Frauschi
    Frauschi committed Oct 1, 2024
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  3. Switch order for X25519/X448 based PQC hybrid KEXs

    @Frauschi
    Frauschi committed Oct 1, 2024
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