Cipher suite changes, August 2020

[dpb]

The blog post at https://bitbucket.org/blog/update-to-supported-cipher-suites-in-bitbucket-cloud lists only eight cipher suites to be supported after August 3, 2020.

On the main systems we are using, the cipher suites are `TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256` and `ECDHE_RSA_AES_256_GCM_SHA384`. Although neither of these exact names is in the blog post's list, my understanding is that both have perfect-forward secrecy — implemented using ephemeral-key Diffie-Helman keys (ECDHE) and SHA 2 secure-hash algorithms — and so would continue to be supported by Bitbucket.

Or are only the eight suites exactly as named to be supported after August 3, 2020?