Random Password Generation

Discussion in 'other security issues & news' started by Tech Manager, Apr 17, 2009.

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  1. Tech Manager

    Tech Manager Registered Member

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    I've just completed the programming of a webform to generates random passwords (for those of us concerned about security).

    The page offers the following choices:

    Number of passwords: 1-99

    Password length: 5-64 characters

    Password complexity: Several levels of complexity are available, including numbers, lowercase and uppercase letters, punctuation and other special characters.

    I would appreciate it if you would try out the webform and give me any comments about the data it creates or offer your :D suggestions on improvements.

    http://www.countryipblocks.net/create_passwords.php

    Thanks in advance.
     
  2. dantz

    dantz Registered Member

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    It's fast and convenient, but the results don't appear to be particularly random. I created 99 maximum-length passwords using all available characters, which I combined into a single file. A simple occurrences count showed that numbers were used about twice as often as uppercase or lowercase characters, with the various symbols (a partial symbol set) about halfway between them. I ran three tests, and the pattern is both predictable and easily identifiable. How are you generating these passwords?
     
  3. Tech Manager

    Tech Manager Registered Member

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    Interesting analysis and one I'll have to study. Php functions are producing the random characters from an array.
     
  4. Joeythedude

    Joeythedude Registered Member

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    you probably know this but some prog ask you do move a mouse etc to generate a random seed as a programming function ".random" cannot be "truely random"
     
  5. Searching_ _ _

    Searching_ _ _ Registered Member

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    I use a bingo ball dispenser I got from HugoMart when I need random generated passwords using 25 of the 75 numbers.

    There are about 5.52*1026, (exactly 155 × 145 × 135 × 125 × 114) possible arrangements of the numbers on a bingo card.

    Combine that with a cipher shift for added security.

    Generating passwords outside your control leads to possible interception.
    This password generator is in the ether, and from the ether is transmitted to me, then I use this for my needs.

    Not a great model. I think you should ask Alice and Bob for a code book.

    (This is my NetBios post)
     
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