Does openssl 1.0.1c (the latest stable version that I can find on the www.openssl.org) fully support TLS 1.2?
I have searched all the changelogs about openssl. Unfortunately, I can not find the information such as "fully support TLS 1.2". It just mentioned "Initial TLS v1.2 support" in the "changes between 1.0.0h and 1.0.1".
How to check if TLS 1.2 is enabled? If the registry key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.2\Client\DisabledByDefault is present, the value should be 0.
The short version: use only TLS 1.2, use only ephemeral key exchanges, and use only AEAD ciphers (like AES/GCM, Camellia/GCM, ChaCha/Poly1305). An example of a TLS client written by the developer team can be found in the source code at demos/sslecho.
Version 1.2 of the Transport Layer Security (TLS) protocol. Allows for data/message confidentiality, and message authentication codes for message integrity and as a by-product message authentication.
Yes.
"Support TLS v1.2 and TLS v1.1." -- https://www.openssl.org/news/openssl-notes.html
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