=item B<OSSL_TRACE_CATEGORY_CONF>
-Traces details about the provider and engine configuration.
-
-=item B<OSSL_TRACE_CATEGORY_ENGINE_TABLE>
-
-Traces the ENGINE algorithm table selection.
-
-More precisely, functions like ENGINE_get_pkey_asn1_meth_engine(),
-ENGINE_get_pkey_meth_engine(), ENGINE_get_cipher_engine(),
-ENGINE_get_digest_engine(), will generate trace summaries of the
-handling of internal tables.
-
-=item B<OSSL_TRACE_CATEGORY_ENGINE_REF_COUNT>
-
-Traces the ENGINE reference counting.
-
-More precisely, both reference counts in the ENGINE structure will be
-monitored with a line of trace output generated for each change.
+Traces details about the provider configuration.
=item B<OSSL_TRACE_CATEGORY_PKCS5V2>
OSSL_trace_set_suffix(), and OSSL_trace_set_callback() were all added
in OpenSSL 3.0.
+The B<OSSL_TRACE_CATEGORY_ENGINE_TABLE> and
+B<OSSL_TRACE_CATEGORY_ENGINE_REF_COUNT> tracing categories were removed in
+OpenSSL 4.0. For details please see L<ossl-guide-migration(7)>
+
=head1 COPYRIGHT
Copyright 2019-2023 The OpenSSL Project Authors. All Rights Reserved.
Traces encoder operations.
-=item B<ENGINE_REF_COUNT>
-
-Reference counts in the ENGINE structure will be monitored with a line
-of generated for each change.
-
-=item B<ENGINE_TABLE>
-
-The function that is used by RSA, DSA (etc) code to select registered
-ENGINEs, cache defaults and functional references (etc), will generate
-debugging summaries.
-
=item B<HTTP>
Traces the HTTP client and server, such as messages being sent and received.