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[quicwg/base-drafts] Bring back AEAD_AES_128_CCM_8 now that we pad the plaintext (#2581)

David Schinazi <notifications@github.com> Mon, 01 April 2019 23:15 UTC

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Subject: [quicwg/base-drafts] Bring back AEAD_AES_128_CCM_8 now that we pad the plaintext (#2581)
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As discussed in #2019, we did not originally have a good way to make AEAD_AES_128_CCM_8 work in QUIC, because it needs a 16 byte sample but produces an 8 byte auth tag. However, since then we have merged #2030, and it's therefore easy to pad short packets by 8 extra bytes when using CCM_8. There might be QUIC use-cases that could benefit from the shorter tags, and it feels nice to have QUIC support all the original TLS 1.3 ciphersuites.

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