=item B<OSSL_KDF_PARAM_DIGEST> ("digest") <UTF8 string>
-=item B<OSSL_MAC_PARAM_ENGINE> ("engine") <UTF8 string>
-
For KDF implementations that use an underlying computation MAC or
-digest, these parameters set what the algorithm should be, and the
-engine that implements the algorithm or the properties to fetch it
-by if needed.
+digest, these parameters set what the algorithm should be.
-The value is always the name of the intended engine, algorithm,
+The value is always the name of the intended algorithm,
or the properties.
Note that not all algorithms may support all possible underlying
These will set the MAC flags to the given numbers.
Some MACs do not support this option.
-=item B<OSSL_MAC_PARAM_ENGINE> ("engine") <UTF8 string>
-
=item B<OSSL_MAC_PARAM_PROPERTIES> ("properties") <UTF8 string>
=item B<OSSL_MAC_PARAM_DIGEST> ("digest") <UTF8 string>
=item B<OSSL_MAC_PARAM_CIPHER> ("cipher") <UTF8 string>
For MAC implementations that use an underlying computation cipher or
-digest, these parameters set what the algorithm should be, and the
-engine that implements the algorithm or the properties to fetch it
-by if needed.
+digest, these parameters set what the algorithm should be.
-The value is always the name of the intended engine, algorithm,
+The value is always the name of the intended algorithm,
or the properties.
Note that not all algorithms may support all digests.