text: CREATE EXTENSION plr;
  CREATE EXTENSION plpython3u;
  CREATE OR REPLACE FUNCTION encrypt (float) RETURNS bytea AS 'return(encrypt(arg1))' LANGUAGE 'plr';
  CREATE OR REPLACE FUNCTION decrypt (bytea) RETURNS float AS 'return(decrypt(arg1))' LANGUAGE 'plr';
  CREATE OR REPLACE FUNCTION add_enc (bytea,bytea) RETURNS bytea AS 'return(addenc(arg1,arg2))' LANGUAGE 'plr';
  CREATE OR REPLACE FUNCTION sub_enc (bytea,bytea) RETURNS bytea AS 'return(subenc(arg1,arg2))' LANGUAGE 'plr';
  CREATE OR REPLACE FUNCTION smult_enc (bytea,float) RETURNS bytea AS 'return(smultenc(arg1,arg2))' LANGUAGE 'plr';
  