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)>