How to Unlock Daniel T Li's Spreadsheet Password
Daniel T Li is a structural engineer who has created a series of design spreadsheets for various engineering applications, such as concrete, steel, foundation, bridge, and masonry design. These spreadsheets are available for purchase on his website www.engineering-international.com. However, some users may want to access the password-protected cells or sheets of these spreadsheets to modify them for their own needs or to check the calculations. How can they do that?
There are a few possible ways to unlock Daniel T Li's spreadsheet password, depending on the level of protection and the version of Excel used. Here are some of them:
Daniel T Li Spreadsheet Password
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Use a password recovery software. There are many online or offline tools that can crack Excel passwords by using brute force, dictionary, or mask attacks. Some examples are PassFab for Excel, Passper for Excel, Excel Password Recovery Lastic, etc. These tools may take some time and may not work for all versions of Excel or all types of passwords.
Use a VBA code. There is a VBA code that can reveal the password of a protected worksheet by creating a new workbook and copying the contents of the protected sheet. The code can be found online on various websites or forums, such as this one. However, this code may not work for Excel 2013 or later versions, or for workbook-level passwords.
Use a hex editor. A hex editor is a software that can edit the binary data of a file. By using a hex editor, such as HxD, one can open the spreadsheet file and search for the string "DPB" or "DPx". This string is followed by the encrypted password. By replacing the encrypted password with "00" or "FF", one can remove the password protection. However, this method may not work for Excel 2007 or later versions, or for complex passwords.
These are some of the possible ways to unlock Daniel T Li's spreadsheet password. However, one should be aware of the ethical and legal implications of doing so. The spreadsheets are protected for a reason, and breaking the password may violate the terms and conditions of the purchase agreement or the intellectual property rights of the author. Therefore, one should use these methods at their own risk and discretion.
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Another reason why some users may want to unlock Daniel T Li's spreadsheet password is to learn from his methods and formulas. Daniel T Li is a reputable and experienced structural engineer who has developed his spreadsheets based on various codes and standards, such as AASHTO, ACI, AISC, ASCE, etc. His spreadsheets cover a wide range of engineering topics, such as bridge design, foundation design, concrete design, steel design, masonry design, etc. By unlocking his spreadsheet password, one can see how he has implemented the design equations and criteria in Excel and how he has organized and formatted his worksheets.
However, one should also be careful not to rely too much on Daniel T Li's spreadsheets without verifying the results or understanding the assumptions and limitations. As with any engineering software or tool, Daniel T Li's spreadsheets are not perfect and may contain errors or bugs. Moreover, his spreadsheets may not reflect the latest updates or revisions of the codes and standards, or may not be applicable to all situations or scenarios. Therefore, one should always check the results with other sources or methods and use professional judgment and common sense when using his spreadsheets.
In conclusion, Daniel T Li's spreadsheet password can be unlocked by using various methods, such as password recovery software, VBA code, or hex editor. However, one should be aware of the ethical and legal issues of doing so and use his spreadsheets with caution and responsibility.
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