Quote:
Originally Posted by fargo
I've thought of using digest, but the problem is where to put it? I mean, anyone can open the .epub and remove the hash value. Readers wouldn't notice that since message digest is not part of the standard after all!
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No, the only way is posting the right hash somewhere, like in your homepage, so that readers can check whether they have the correct and certified version. It won't warn readers of a modified version, but anyone can check if they have the original version or a modified one.
(PDFs can be modified too, password-protected or not
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