Generating 25 character key from a password

Generating 25 character key from a password - Printable Version

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+---- Thread: Generating 25 character key from a password (/showthread.php?tid=777)

- William - 01-03-2007

that cant be that hard, well it can take some time. I will construct a tiny version for you:

Code:
Password: abc

Code:
' Get the key from the password

For i = 1 To Len(Password)

  If LCase$(Mid$(Password, i, 1)) = "a" Or Mid$(Password, i, 1) = "a" Then

     key = key & "a23fr"

  End If

  If LCase$(Mid$(Password, i, 1)) = "b" Or Mid$(Password, i, 1) = "b" Then

     key = key & "blt5d"

  End If

  If LCase$(Mid$(Password, i, 1)) = "c" Or Mid$(Password, i, 1) = "c" Then

     key = key & "cm48d"

  End If

etc..

Next i

Code:
The key would be: a23frblt5dcm48d

You get the idea how I would have done it Tongue

Ask Verrigan, he is the perfect man for the job when it comes to these things Tongue

- Obsidian - 01-03-2007

Well i would assume that you could do something like... get the length of their password, and then start to generate one based on that. if you want it to be a repeatable key... then a mathematical formula obviously is what needs to be used.

- Robin - 01-03-2007

I agree with obsidian. Generate the length through the length of the password, then use a formula to fill it with stuff.

- Spodi - 01-03-2007

Why 25 characters? I've always wished MD5 was easily definable on the length, too - god that would be handy. But with 25 characters, in base 16, that is still 16 ^ 25, or 1267650600228229401496703205376 different combination, so chances of repeats are quite small.

Anyways, what you can do is just take the MD5 hash and trim off the last 7 characters, and bam, 25. :wink: If you want to obfuscate it farther, run whatever you can/want through encryptions, combine different parts of MD5 hashes, etc.