--
-- init pgcrypto
--
CREATE EXTENSION pgcrypto;
-- check error handling
select gen_salt('foo');
ERROR:  gen_salt: Unknown salt algorithm
select digest('foo', 'foo');
ERROR:  Cannot use "foo": No such hash algorithm
select hmac('foo', 'foo', 'foo');
ERROR:  Cannot use "foo": No such hash algorithm
select encrypt('foo', 'foo', 'foo');
ERROR:  Cannot use "foo": No such cipher algorithm