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spikefuzzy1
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Since: Jun 27, 2009
Posts: 1



PostPosted: Sat Jun 27, 2009 7:56 am    Post subject: Password Protection Bug
Archived from groups: microsoft>public>excel>misc (more info?)

I am using MS Office (Pro) Excel 2003 (11.8237.8221) SP3
I create a new workbook.
I password protect the first sheet using the password "az" without the
quotation marks.
The sheet is now protected.
I unprotect the sheet and, when prompted for the password, input "Aj"
without the quotation marks.
The sheet is now unprotected.
Why does this other password work for unlocking the worksheet?
(There are other examples. For instance, "test" can be unlocked using "BBAb")

Why the heck does this work?


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Shane Devenshire
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Since: Jan 07, 2009
Posts: 252



PostPosted: Sat Jun 27, 2009 8:22 am    Post subject: RE: Password Protection Bug [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

Hi,

This is a know limitation of the password handling routine in Excel. The
good news?, its consistant between version, the same problem occurs in 2007.
Aparently Microsoft doesn't consider sheet passwords a critical issue.

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Shane Devenshire


"spikefuzzy1" wrote:

> I am using MS Office (Pro) Excel 2003 (11.8237.8221) SP3
> I create a new workbook.
> I password protect the first sheet using the password "az" without the
> quotation marks.
> The sheet is now protected.
> I unprotect the sheet and, when prompted for the password, input "Aj"
> without the quotation marks.
> The sheet is now unprotected.
> Why does this other password work for unlocking the worksheet?
> (There are other examples. For instance, "test" can be unlocked using "BBAb")
>
> Why the heck does this work?
>
>
> --
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Bob I
External


Since: Dec 30, 2004
Posts: 524



PostPosted: Tue Jul 21, 2009 10:40 am    Post subject: Re: Password Protection Bug [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

Simply because the hash results are same for each pair.

spikefuzzy1 wrote:
> I am using MS Office (Pro) Excel 2003 (11.8237.8221) SP3
> I create a new workbook.
> I password protect the first sheet using the password "az" without the
> quotation marks.
> The sheet is now protected.
> I unprotect the sheet and, when prompted for the password, input "Aj"
> without the quotation marks.
> The sheet is now unprotected.
> Why does this other password work for unlocking the worksheet?
> (There are other examples. For instance, "test" can be unlocked using "BBAb")
>
> Why the heck does this work?
>
>
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