feat: add AES-CCM cipher suites - #289
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Add TLS 1.2 ECDHE-ECDSA AES-CCM/CCM-8 and TLS 1.3 AES-128-CCM cipher suites using the RustCrypto ccm crate.
Format CCM AEAD code and remove should_panic from CCM/CCM-8 cipher suite interop tests now that AES-CCM is supported.
AES-128-CCM interop works; CCM-8 still fails with no shared cipher against the local OpenSSL harness, so leave that expectation in place.
CI OpenSSL negotiates TLS_AES_128_CCM_8_SHA256 successfully, so the should_panic expectation was wrong.
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Summary
Independent PR based on
master(not stacked).Test plan
cargo test --lib/ clippy / no_std (1.85)