b91f79cd08
cryptohash_openssl.c initialized the EVP_MD_CTX with the implicit static digest objects (EVP_sha256() and friends). These do not dispatch through a loaded provider. OpenSSL 3.0 and newer versions recommend to switch to an explicit fetch, using EVP_MD_fetch(), the older routines being deprecated, available for backward-compatibility purposes. Now, when building with OpenSSL 3.0 or a newer bersion, we fetch the digest by name with EVP_MD_fetch(), cache it in the context, and free it on teardown. This has as consequence to feed the hash from a provider. The implicit path is kept for older OpenSSL, 1.1.1 being the oldest version still supported on HEAD, and for LibreSSL. This is a slight change in the hashing logic. No backpatch is done as that looks safer, and the code in the back-branches is also able to work. This has been locally tested across OpenSSL 1.1.1 up to 3.5, so hopefully nothing is broken. Note: The submitted code was clearly AI-generated. I have spend a bit of time cleaning it up, making it more consistent with the project style in terms of coding, adjusting a few more things on the way. Author: Mark Atwood <mark@reviewcommit.com> Co-authored-by: Michael Paquier <michael@paquier.xyz> Discussion: https://postgr.es/m/178596055358.1584287.8485463954311014881@reviewcommit.com
PostgreSQL Database Management System
This directory contains the source code distribution of the PostgreSQL database management system.
PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.