--
-- crypt() and gen_salt(): bcrypt
--
SELECT crypt('', '$2a$06$RQiOJ.3ELirrXwxIZY8q0O');
                            crypt                             
--------------------------------------------------------------
 $2a$06$RQiOJ.3ELirrXwxIZY8q0OlGbBEpDmx7IRZlNYvGJ1SHXwNi2cEKK
(1 row)

SELECT crypt('foox', '$2a$06$RQiOJ.3ELirrXwxIZY8q0O');
                            crypt                             
--------------------------------------------------------------
 $2a$06$RQiOJ.3ELirrXwxIZY8q0OR3CVJrAfda1z26CCHPnB6mmVZD8p0/C
(1 row)

CREATE TABLE ctest (data text, res text, salt text);
INSERT INTO ctest VALUES ('password', '', '');
UPDATE ctest SET salt = gen_salt('bf', 8);
UPDATE ctest SET res = crypt(data, salt);
SELECT res = crypt(data, res) AS "worked"
FROM ctest;
 worked 
--------
 t
(1 row)

DROP TABLE ctest;