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Diffstat (limited to 'doc/cha-intro-tls.texi')
| -rw-r--r-- | doc/cha-intro-tls.texi | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/doc/cha-intro-tls.texi b/doc/cha-intro-tls.texi index a7c8a55112..79aa58bd7e 100644 --- a/doc/cha-intro-tls.texi +++ b/doc/cha-intro-tls.texi @@ -179,6 +179,16 @@ ARCFOUR-128 is a compatible algorithm with RSA's RC4 algorithm, which is conside secret. It is a considered to be broken, and is only used for compatibility purposed. For this reason it is not enabled by default. +@item NULL @tab +Legacy (stream) @tab +TLS 1.0, TLS 1.1, TLS 1.2 @tab +NULL is the empty/identity cipher which doesn't encrypt any data. It can be +combined with data authentication under TLS 1.2 or earlier, but is only used +transiently under TLS 1.3 until encryption starts. This cipher cannot be negotiated +by default (need to be explicitly enabled) under TLS 1.2, and cannot be +negotiated at all under TLS 1.3. When enabled, TLS 1.3 (or later) support will be +implicitly disabled. + @end multitable @caption{Supported ciphers in TLS.} @end float |