different providers have been loaded.
Implicit fetching can also occur with functions such as
-L<EVP_PKEY_CTX_derive_init_ex(3)> where a NULL algorithm parameter is supplied.
+L<EVP_PKEY_derive_init_ex(3)> where a NULL algorithm parameter is supplied.
In this case an algorithm implementation is implicitly fetched using default
search criteria and an algorithm name that is consistent with the type of
EVP_PKEY being used.
These functions are used to set up the necessary data to use the
scrypt KDF.
-For more information on scrypt, see L<scrypt(7)>.
+For more information on scrypt, see L<EVP_KDF_SCRYPT(7)>.
EVP_PKEY_CTX_set1_scrypt_salt() sets the B<saltlen> bytes long salt
value.
=head1 NOTES
+There is a newer generic API for KDFs, L<EVP_KDF(3)>, which is
+preferred over the EVP_PKEY method.
+
The scrypt KDF also uses EVP_PKEY_CTX_set1_pbe_pass() as well as
the value from the string controls "pass" and "hexpass".
See L<EVP_PKEY_CTX_set1_pbe_pass(3)>.
=head1 SEE ALSO
-L<scrypt(7)>,
+L<EVP_KDF(3)>
L<EVP_PKEY_CTX_new(3)>,
L<EVP_PKEY_CTX_ctrl_str(3)>,
L<EVP_PKEY_derive(3)>