How do I encrypt passwords with PostgreSQL?

Question

I have some problems with encoding passwords,how can I do it. Type of encoding md5

digest(data text, type text) returns bytea;
CREATE OR REPLACE FUNCTION md(byte         


        

Answer 1

I know this question is old but for those who having the same issue.

Step 1: first check whether prcrypto is installed or not

select e.extname, n.nspname from pg_catalog.pg_extension e left join pg_catalog.pg_namespace n on n.oid = e.extnamespace;

Step 2: If it is not installed then create extension

CREATE EXTENSION IF NOT EXISTS pgcrypto;

Step 3: Computes a binary hash of the given data.

    CREATE OR REPLACE FUNCTION sha1(bytea) returns text AS $$
      SELECT encode(digest($1, 'sha1'), 'hex')
    $$ LANGUAGE SQL STRICT IMMUTABLE;

Last Step:

Also use encode function If you want the digest as a hexadecimal string

SELECT encode(digest('blue', 'sha1'), 'hex');

or

directly sha('blue')