EFS encription in excel file

I am using XP sp3
I have an excel  spreadsheet and believe that I can protect it with encryption "EFS"

How can I check I have EFS installed and how can I use this on a .xls spreadsheet?

I found in the spreadsheet Tools/Protection/ProtectSheet but am not sure is this is encrytion or a password.
I understand encryption is much stronger.

Many thanks
John
johnhardyAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

TommySzalapskiCommented:
ProtectSheet is just a password and does not use encryption. You can add encryption though by clicking the 'Advanced' button on the protect tab. Detailed instructions here:
http://www.oraxcel.com/projects/encoffice/help/protect_excel.html
Russell_VenableCommented:
EFS stands for Encryption File Service. EFS primary purpose is to make your files unreadable if they are viewed by a different user on a different computer or windows profile. If you leave your computer unattended, someone can just open your file from your profile and do as they like.

It's not a very good encryption system to use. Plus if your account gets deleted so does the certificates and keys that allow to read them on your profile making it near impossible to unencrypted your files again.

You can use the method above to encrypt your excel sheet or you can use something like PGP(Pretty Good Protection) which uses a passphrase and not a password to authenticate. They also use 1026 bit encryption. All depends on how strong you want it to be encrypted.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
johnhardyAuthor Commented:
Thanks for both answers.
Plus if your account gets deleted so does the certificates and keys that allow to read them on your profile making it near impossible to unencrypted your files again
Re the account mentioned I am not clear where this account is held. Can you please say further?
IT Pros Agree: AI and Machine Learning Key

We’d all like to think our company’s data is well protected, but when you ask IT professionals they admit the data probably is not as safe as it could be.

Russell_VenableCommented:
To clarify for you. It would be the account you login to windows with encrypt the files using EFS on your same profile and move the files to lets say a USB stick and your computer takes a nose dive, you won't have access to those files anymore.
johnhardyAuthor Commented:
Many thanks for the excellent help
Russell_VenableCommented:
Np.
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Microsoft Excel

From novice to tech pro — start learning today.