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Add a CHANGES.md entry for the "tmp_dh" functions/macros 

Describe the tmp_dh deprecations, and what applications should do instead.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/13368)
This commit is contained in:
Matt Caswell 2020-10-23 16:44:35 +01:00
parent 33c39a0659
commit 1b2a55ffa2
1 changed files with 15 additions and 0 deletions
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CHANGES.md
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@ -23,6 +23,21 @@ OpenSSL 3.0
### Changes between 1.1.1 and 3.0 [xx XXX xxxx]
* The functions SSL_CTX_set_tmp_dh_callback and SSL_set_tmp_dh_callback, as
well as the macros SSL_CTX_set_tmp_dh() and SSL_set_tmp_dh() have been
deprecated. These are used to set the Diffie-Hellman (DH) parameters that
are to be used by servers requiring ephemeral DH keys. Instead applications
should consider using the built-in DH parameters that are available by
calling SSL_CTX_set_dh_auto() or SSL_set_dh_auto(). If custom parameters are
necessary then applications can use the alternative functions
SSL_CTX_set0_tmp_dh_pkey() and SSL_set0_tmp_dh_pkey(). There is no direct
replacement for the "callback" functions. The callback was originally useful
in order to have different parameters for export and non-export ciphersuites.
Export ciphersuites are no longer supported by OpenSSL. Use of the callback
functions should be replaced by one of the other methods described above.
*Matt Caswell*
* The -crypt option to the passwd command line tool has been removed.
*Paul Dale*