Quote:
Originally Posted by ruibittencourt
Yes... I need to agree with you... but because this possibility a lot of authors will prefere not have their books on digital plataforms. They are lawyers, judge, university professors and certainly they care about their names and reputation. Can you imagine if a book of a judge is modified by someone who wants to prejudice him?  |
Yes, but if people are getting a digital book from a questionable source then I could question the content too.
There are two ways that you can protect the integrity of the content.
First. There is a way to digitally sign a file with a private key/certificate. This proves it came from that individual or organization but in no way does it hinder the ability to use the book as needed. Any one with a simple tool can check the private key using a public key that you publish on your web site or on a key server. If the book as been altered the tool will show that the file is not valid. Or, if someone tries to resign it the tool will show that it was not signed by the correct person. One popular tool to do this is PGP. It has been around for years and many people still use it to sign their emails.
The second way is to create an MD5 Hash. This is similar to the above. However, a hash is created for each ebook. This is how Ubuntu allows d/l to verify they are getting authentic d/ls. The MD5 hash is published on your web site with the book information. Anyone can run the file through a tool to generate the MD5 hash and compare it to the published hash. As a matter of fact, DownloadThemAll a popular Firefox d/l tool supports verifying the MD5 hash of downloads.
So, you see there are ways of proving that the text is from whom it is said to be.
BOb