Beefy Boxes and Bandwidth Generously Provided by pair Networks
laziness, impatience, and hubris
 
PerlMonks  

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??

What I am trying to prevent is to have a collection of "important" numbers in plaintext on a laptop

Noone suggested that. We said specifically said to put that information in the secret database, the one "that's under lock and key (of course)".

You're ok with haveing a secret table that maps public ids to real ids. You were thinking of implementing that table as a rainbow table. All we're suggesting is that you implement that table in a much more straightforward manner:

work db secret db (laptop) (under lock and key) +-----------+--- +-----------+---------+ | public id | ... | public id | real id | +-----------+--- +-----------+---------+

The public id would simply be a unique random number. (Safer than a hash, and avoids the problem of collisions.)

Now, this assumes the database is created before being placed on the laptop, but that's consistent with everything you've told us so far. You can still use the above method if you collect the numbers in the field, but only if the field has access to the a remote service that provides the following function:

$public_id = get_new_public_for($real_id);

In reply to Re^5: Creating a rainbow table for a ten-digit number: Advice? by ikegami
in thread Creating a rainbow table for a ten-digit number: Advice? by willyyam

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or or How to display code and escape characters are good places to start.
Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others taking refuge in the Monastery: (4)
As of 2022-01-20 17:16 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    In 2022, my preferred method to securely store passwords is:












    Results (57 votes). Check out past polls.

    Notices?