Re: Playing with pgcrypto

Hi Howard,

> On 11/10/2022 00:25 CEST howardnews(at)selestial(dot)com wrote:
>
> I am trying out a few pgcrypto functions. I was expecting the final
> select statement to return the row I just inserted - Can anyone tell me
> what I am not understanding here?
>
> create table test (p1 bytea);
> insert into test (pgp_sym_encrypt('123', 'secret'));

Your INSERT is malformed. It's missing a VALUES clause or SELECT.

> select * from test where pgp_sym_encrypt('123', 'secret') = p1;

pgp_sym_encrypt uses a random salt each time, so you cannot compare the output
to p1 like you would do with crypt to verify a given plaintext. Instead, use
pgp_sym_decrypt with p1 as input to get the plaintext.

--
Erik