On Tue, 15 Nov 2022 22:53:35 GMT, Sean Mullan <[email protected]> wrote:
> > BTW, the protocol for SSLContext.getInstance() method is not a TLS
> > protocol. It is more of a context-algorithm. For example,
> > SSLContext.getInstance("TLSv1.3") could support TLS 1.0/1.1/1.2/1.3. It may
> > be not usual, but if TLS 1.3 is disabled, and TLS 1.2 not, the connection
> > should be able to established with TLS 1.2. In the description, it would be
> > nice to make it clean what the 'protocol" means in different circumstances.
>
> Yes, it might be useful to add something like "The returned SSLContext
> implements the specified protocol version, and may also implement other
> protocol versions." But I think it could be covered in a separate issue.
>
I was not meant to add this kind of description. I meant that the "specified
protocol" in the description is not a TLS protocol version, and hence it could
not be referred as TLS protocol version.
> The wording in this PR specifically refers to the protocol version that was
> specified. It isn't covering other optional protocols that may be supported.
I may be wrong. But let me check. For example, the code looks like:
` SSLContext context = SSLContext.getInstance("TLSv1.3");
`
Per "The wording in this PR specifically refers to the protocol version that
was specified", I guess "the protocol version that was specified" is "TLSv1.3".
And for code like `SSLContext context = SSLContext.getInstance("TLSv1.2");` I
guess the "the protocol version that was specified" is "TLSv1.2".
If the property looks like `jdk.tls.disabledAlgorithms=TLSv1.3`, the
`"TLSv1.3"` specified in the security property is not the one specified in
`SSLContext.getInstance("TLSv1.3");`. They are two different concepts. The one
in `SSLContext.getInstance("TLSv1.3");` refers to SSLContext protocol, while
the one in `jdk.tls.disabledAlgorithms=TLSv1.3` refers to TLS versions.
However, in the following description:
* ... However, if the specified provider is "SunJSSE",
* subsequent operations that attempt to use the specified protocol will
* fail with an {@code SSLHandshakeException}."
if "the specified protocol" is referring to TLS version, it is not correct.
If I get it right, the context in the example above can be used to establish
connections for TLS 1.0/1.1/1.2. The description in the PR , "will fail with
...", may be not true.
-------------
PR: https://git.openjdk.org/jdk/pull/11172
