Abbrase – Abbreviated Passphrase Password Generator


Abbrase is an abbreviated passphrase password generator. An ‘abbrase’ is one of the passwords it produces. It generates a password and a phrase like “phyeigdolrejutt” and “physical eight dollars rejected utterly”.

Abbrase - Abbreviated Passphrase Password Generator

Creating secure passwords is easy. Remembering them is hard. Pwgen makes them memorable though pronounceability. XKCD suggests using a series of random common words, but memorising series of unrelated words can be difficult, and typing long phrases can be tedious.

Abbrase is an experiment in generating probable phrases using Markov chains and abbreviating each word to the first few letters. This strikes a balance between excessive password length and excessive mnemonic length. Passwords generated by Abbrase are as secure as a number with the same length. “122079103” and “toldulbal” (tolerably dull ball) are equally hard to attack.


Theory

Language is the most information-dense thing people memorise. Brains don’t operate on bits.

Pi recitation record-holders don’t have thousands of digits in their minds. They map clusters of digits to far more mentally palatable words, memorising a long story instead of a sequence of digits.

Memorising a grammatically sensible sentence fragment is easier than a sequence of randomly chosen words.

Picking a favourite phrase from the ones generated by Abbrase could make them very slightly easier to attack. A sophisticated attacker could check passwords that are likely to be picked before others. If the attacker can perfectly model which passwords you would prefer, this reduces the security of your password in a proportional amount to the number of passwords you selected it from — if you picked from 32 passwords generated by Abbrase, it makes your password 32x easier to attack (5 bits of security lost).

You can download Abbrase via Github here:

Or read more here.

Posted in: Password Cracking Tools, Security Software

,


Latest Posts:


tko-subs - Detect & Takeover Subdomains With Dead DNS Records tko-subs – Detect & Takeover Subdomains With Dead DNS Records
tko-subs is a tool that helps you to detect & takeover subdomains with dead DNS records, this could be dangling CNAMEs point to hosting services and more.
Arcane - Tool To Backdoor iOS Packages (iPhone ARM) Arcane – Tool To Backdoor iOS Packages (iPhone ARM)
Arcane is a simple script tool to backdoor iOS packages (iPhone ARM) and create the necessary resources for APT repositories.
SharpHose - Asynchronous Password Spraying Tool SharpHose – Asynchronous Password Spraying Tool
SharpHose is an asynchronous password spraying tool in C# for Windows environments that takes into consideration fine-grained password policies and can be run over Cobalt Strike's execute-assembly.
Axiom - Pen-Testing Server For Collecting Bug Bounties Axiom – Pen-Testing Server For Collecting Bug Bounties
Project Axiom is a set of utilities for managing a small dynamic infrastructure setup for bug bounty, basically a pen-testing server out of the box with 1-line.
Quasar RAT - Windows Remote Administration Tool Quasar RAT – Windows Remote Administration Tool
Quasar is a fast and light-weight Windows remote administration tool coded in C#. Used for user support through day-to-day administrative work to monitoring.
Pingcastle - Active Directory Security Assessment Tool Pingcastle – Active Directory Security Assessment Tool
PingCastle is a Active Directory Security Assessment Tool designed to quickly assess the Active Directory security level based on a risk and maturity framework.


2 Responses to Abbrase – Abbreviated Passphrase Password Generator

  1. firuz February 8, 2017 at 12:08 am #

    “122079103” and “toldulbal” (tolerably dull ball) are equally hard to attack.
    Don’t 9 digit only number passwords have much lower entrophy and easier to come accross to in dictionaries???

    • Darknet February 8, 2017 at 9:08 pm #

      In theory yah, but a dictionary attack would rarely do just numbers or just letters, they’d go through all [0-9,a-z, A-Z] all at once usually. So in practical sense there’s no real difference.