At 2015-08-19 05:32:40, "Tom Lane" <tgl@sss.pgh.pa.us> wrote:
>digoal@126.com writes:
>> why PostgreSQL 9.4.4 cann't use eNULL or NULL ciphers?
>
>I believe we intentionally disallow that, because those "ciphers"
>actually mean transmission in cleartext. If you're okay with
>unencrypted connections, you needn't bother with SSL at all.
>
> regards, tom lane
yes, but when people hope to use SSL's compression function, and don't need encrypted these data?
the encryption will use some CPU, so it's performance will reduce little.
regards, digoal