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Thread: smartest crunch

  1. #1
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    Default smartest crunch

    Hi,
    Can someone help what is the smartest crun

    a
    ./crunch 8 8 -f charset.txt mixalpha-numeric-all-space

    anyone have an idea how long time it will take.


    is it smart to use alpha-numeric-space instead?
    Since most routers are with capital letters and numbers?

  2. #2
    My life is this forum thorin's Avatar
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    Speed/time are depends on system specs.

    "smartest" would seem to a qualitative measurement requiring further definition.
    I'm a compulsive post editor, you might wanna wait until my post has been online for 5-10 mins before quoting it as it will likely change.

    I know I seem harsh in some of my replies. SORRY! But if you're doing something illegal or posting something that seems to be obvious BS I'm going to call you on it.

  3. #3
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    yeah but I mean most wpa consit of capital ABC + characters correct?

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    Senior Member kidFromBigD's Avatar
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    Quote Originally Posted by benjsh View Post
    yeah but I mean most wpa consit of capital ABC + characters correct?
    No.

    Fact is, a WPA passphrase can consist of anything you can type on your keyboard with few exceptions. If you're talking about the Sky routers(UK) that others have said come with an ALL-CAPS default passphrase, then maybe. For the rest of us, a WPA passphrase could be any combination of letters and numbers, punctuation, spacebar or whatever, minimum 8 characters up to 63 maximum.

    So that's why WPA can be extremely secure, if the humans running the network actually care about security.
    You. Are. Doing. It. Wrong.
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  5. #5
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    Let me ask what do you need it for anyway?
    Tiocfaidh ár lá

  6. #6
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    thanks for info.

    I just realized how unsecure my own networks are :-)
    If I have a 8 character password that only consist of lower case abc how many possibilities would there be to crack it?

    Are there some charts of

    8 characters with numbers and letter = how many possibilities
    8 characters with numbers Capital letters and letters = how many possibilities

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    Are there some charts of

    8 characters with numbers and letter = how many possibilities
    8 characters with numbers Capital letters and letters = how many possibilities
    numbers may 10 numbers 1 char to 4 chars 10*10*10*10
    letters a-z - 26 A-Z - 26

    all up 26+26+10 = 62
    8 char password = 62*62*62*62*62*62*62*62 = 218340105584896 passwords
    at 5000k/s = about 1388 years


    only lowercase chars
    26*26*26*26*26*26*26*26 = 208827064576 passwords
    at 5000k/s = about 1.3 years

  8. #8
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    No tables needed, you can calculate easily yourself.

    (^ = exponent or power of. Comma is thousands separator and period is decimal.)

    Character Set ^ Password Length = # of Passwords

    Lower case (26):
    26^8 = 208,827,064,576 Passwords

    Upper & lower case (52):
    52^8 = 5.34597285 × 10^13 Passwords (Approx 53.5 trillion)

    Upper, lower, and numeric(62):
    62^8 = 2.18340106 × 10^14

    Upper, lower, numeric, and special chars [ascii 32-47, 58-64, 91-96, 123-126] (95):
    95^8 = 6.63420431 × 10^15 Passwords (Approx 6 quadrillion)

    Assuming a key speed of 5,000key/sec.
    60sec x 60min x 24hours x 365days x 5000passwords = 157,680,000,000passwords/year

    208,827,064,576 passwords / 157,680,000,000passwords/year = ~1.3 Years

    Keep in mind given new techniques 5,000passwords/sec is very low.

    Interesting paper here:
    http://www1.umn.edu/oit/security/OIT...1_REGION1.html
    I'm a compulsive post editor, you might wanna wait until my post has been online for 5-10 mins before quoting it as it will likely change.

    I know I seem harsh in some of my replies. SORRY! But if you're doing something illegal or posting something that seems to be obvious BS I'm going to call you on it.

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