How Does den4b RandPass Generate Secure Passwords?

Updated

RandPass generates passwords by combining character sets (letters, digits, symbols) or word lists (Diceware, EFF) under custom rules and exclusions, and per the site's release notes for version 2.3, it now produces cryptographically secure passwords by default and rates strength by entropy. It suits anyone who needs policy-compliant passwords for personal use or scripted/automated generation via its command-line support.

What RandPass draws from

RandPass is described on den4b.com as "a secure random password generator" that can create strong passwords using:

  • Letters, digits, and symbols — the classic character-based approach, where length and character mix determine the search space.
  • Word lists — including Diceware and EFF lists, which build passphrases from randomly chosen words. Word-list generation trades raw character complexity for memorability, since each word adds entropy in proportion to the list size.

The site also notes that the bundled word lists were expanded in version 2.3 with BIP-39 and Orchard Street options, giving more word-list material to draw from.

Rules and exclusions for policy compliance

Beyond picking a source, RandPass lets you apply custom rules and exclusions. In practice, this is what makes the output usable in environments with password policies — for example, a system that forbids ambiguous characters (like l, 1, O, 0) or requires at least one symbol. You define the constraints, and RandPass generates within them rather than producing a password you then have to reject and regenerate.

Automation via command line

RandPass supports command-line operation, so generation can be scripted rather than done by hand. This matters when you need passwords as part of a provisioning or setup workflow — for example, generating a fresh credential each time a test account is created, instead of reusing one. The site presents this as support for "personal or automated use."

What changed in version 2.3

The release notes for RandPass 2.3 (about a month before the site snapshot) list three relevant changes:

Change What it means for you
Cryptographically secure generation by default You no longer need to opt in to a secure random source; the default generator is the secure one.
Entropy-based strength rating The tool reports password strength as an entropy measure, giving a concrete basis for judging whether a generated password is strong enough.
Expanded word lists (BIP-39, Orchard Street) More options for passphrase-style generation.

The notes call the new default random generator "the standout change," which is the detail worth checking if you relied on older versions or compared outputs across releases.

How to approach it

  1. Decide between character-based and word-list generation. Use character-based passwords when a system enforces complexity rules; use Diceware/EFF word lists when you need something a person can actually memorize.
  2. Set exclusions to match the target system's policy before generating, so the first output is likely to be accepted.
  3. Check the entropy rating shown for the result rather than judging strength by appearance.
  4. Use the command line if you need repeatable, scripted generation; otherwise the interactive generator is sufficient.

One caveat: the site snapshot confirms the features above but does not document specific command-line syntax or menu locations, so consult the bundled help/documentation and forum linked from den4b.com for exact usage. Pricing and licensing details are handled on the site's Purchase and Compare Editions pages; the snapshot does not state terms, so check those pages directly if you need them.