Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.java.programmer > #18860

Re: get hexadecimal hash string for a number

Show all headers | View raw

On 09/20/2012 04:06 AM, Kevin McMurtrie wrote:

> What is your database key?
>
> If it's 1, 2, 3, 4, ... then encrypting it will simply reveal your
> encryption key.

It's an incrementing integer. What's the reason for revealing the key? 
Is it the shortness of the number or is it the fact, that the number 
increments?

If it's the shortness, what about padding?

> If characters aren't efficient for your keys, simply use
> a translation table between the random and sequential values.  Use the
> randomized value as a database key on all traffic leaving and entering
> your server.  It prevents the public from guessing new database keys.
>
> create table urlparams
> {
>     param char(16) primary key,
>     id integer unique not null references main_table (id)
> }
> -- param is the outside database key made of random characters
> -- id is the local primary key

Ok thanks...

Magnus

Back to comp.lang.java.programmer | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

get hexadecimal hash string for a number Magnus Warker <magnux@mailinator.com> - 2012-09-18 18:25 +0200
  Re: get hexadecimal hash string for a number markspace <-@.> - 2012-09-18 10:08 -0700
    Re: get hexadecimal hash string for a number Lew <lewbloch@gmail.com> - 2012-09-18 10:14 -0700
    Re: get hexadecimal hash string for a number Arne Vajhøj <arne@vajhoej.dk> - 2012-09-18 19:58 -0400
      Re: get hexadecimal hash string for a number markspace <-@.> - 2012-09-18 17:27 -0700
        Re: get hexadecimal hash string for a number Arne Vajhøj <arne@vajhoej.dk> - 2012-09-18 21:17 -0400
        Re: get hexadecimal hash string for a number Arne Vajhøj <arne@vajhoej.dk> - 2012-09-18 21:21 -0400
      Re: get hexadecimal hash string for a number Magnus Warker <warker@mailinator.com> - 2012-09-19 08:27 +0200
        Re: get hexadecimal hash string for a number Arne Vajhøj <arne@vajhoej.dk> - 2012-09-19 18:30 -0400
        Re: get hexadecimal hash string for a number Kevin McMurtrie <mcmurtrie@pixelmemory.us> - 2012-09-19 19:06 -0700
          Re: get hexadecimal hash string for a number Magnus Warker <warker@mailinator.com> - 2012-09-20 11:32 +0200
  Re: get hexadecimal hash string for a number Lew <lewbloch@gmail.com> - 2012-09-18 10:10 -0700
    Re: get hexadecimal hash string for a number Arne Vajhøj <arne@vajhoej.dk> - 2012-09-18 20:02 -0400
    Re: get hexadecimal hash string for a number Magnus Warker <warker@mailinator.com> - 2012-09-19 08:18 +0200
  Re: get hexadecimal hash string for a number Roedy Green <see_website@mindprod.com.invalid> - 2012-09-18 10:23 -0700
    Re: get hexadecimal hash string for a number Arne Vajhøj <arne@vajhoej.dk> - 2012-09-18 20:00 -0400
  Re: get hexadecimal hash string for a number Arne Vajhøj <arne@vajhoej.dk> - 2012-09-18 20:06 -0400
    Re: get hexadecimal hash string for a number markspace <-@.> - 2012-09-18 17:30 -0700
      Re: get hexadecimal hash string for a number Arne Vajhøj <arne@vajhoej.dk> - 2012-09-18 21:07 -0400
  Re: get hexadecimal hash string for a number Kevin McMurtrie <mcmurtrie@pixelmemory.us> - 2012-09-18 22:50 -0700
  Re: get hexadecimal hash string for a number Leif Roar Moldskred <leifm@dimnakorr.com> - 2012-09-19 01:06 -0500
  Re: get hexadecimal hash string for a number rossum <rossum48@coldmail.com> - 2012-09-19 17:34 +0100
    Re: get hexadecimal hash string for a number Magnus Warker <warker@mailinator.com> - 2012-09-20 11:30 +0200
      Re: get hexadecimal hash string for a number rossum <rossum48@coldmail.com> - 2012-09-21 12:48 +0100
        Re: get hexadecimal hash string for a number Lew <lewbloch@gmail.com> - 2012-09-21 10:15 -0700
          Re: get hexadecimal hash string for a number Magnus Warker <warker@mailinator.com> - 2012-09-26 06:11 +0200
            Re: get hexadecimal hash string for a number Arne Vajhøj <arne@vajhoej.dk> - 2012-09-26 09:29 -0400
              Re: get hexadecimal hash string for a number Gene Wirchenko <genew@ocis.net> - 2012-09-26 09:18 -0700
      Re: get hexadecimal hash string for a number markspace <-@.> - 2012-09-21 10:56 -0700
        Re: get hexadecimal hash string for a number Magnus Warker <warker@mailinator.com> - 2012-09-26 06:12 +0200
      Re: get hexadecimal hash string for a number Arne Vajhøj <arne@vajhoej.dk> - 2012-09-23 20:57 -0400

csiph-web