Need a security program to secure my excel file

Hello I recently developed an excel program that would score a test via computations in excel rather than scoring the test by hand. It is a simple program that does not use any type of programming language, just excel functions. I was going to sell this program to a group of people that would use a program such as this. But i was wondering if there was a way I could make the program more secure, such as a key generator or something where people wouldn't be able to just slap the excel file to an email and send it to all his or her friends. I thought maybe there was some program i could download to make it secure, if there are any ideas, or better ways i should go about this please let me know. Thank you very much!

 

DoneEx XCell Compiler, perhaps is what you are looking for?

 

Wow that is a great help! It probably is too much to ask to have some kind of simliar program like that free? I really mostly need the key registration part. Thanks for your help mark

 

Hello There,

This is slightly off topic but you could try putting the excel file in to winrar compression tool and put a password encryption on that so noone else can access the file.

I use that all the time with excel, word, databases and various files.

hope this helps

 

Really good idea. Think i might start doing this for some stuff.

 

EDIT: Thanks that is a really good idea! Though, i assume that if the consumer knows the password, he or she can just as easy say here is the program and password, correct? So as far as limiting people from sending it to all their friends it still would make no difference?

 

Hate to double post, or bump this, but is there any programs out there that do what im speaking of for free? Or is that too good to be true?

 

No, Winrar sometimes now comes with the OS depending on which version of OS you got you can send the archive to anyone when they receive it, it will ask them for the password that the creator has made and they cannot access it without it. If you don't have the tool here is it to download

http://majorgeeks.com/WinRAR_d524.html

 

Yeah exactly. Maybe the only program able to do this is that DoneEx program. It is $50 though.... but maybe it is worth it?

 

Can you earn at least $50 selling it?

 

You might also try your search at www.securitysearchauthority.com which is a IT security focused search engine.