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Originally Posted by hacker
If its a one-way hash, there is no "decryption" involved. You simply take the password/key/code that is entered, encode it with your known seed + hash, and compare it with the stored value...If there is a key of some sort, which is used to encrypt and decrypt the book, and that is stored somewhere in the application or the book itself, then the whole process of encryption is irrelevant...
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Not right here. The hash value resulting from the one-way hash
is the actual key to encrypt/decrypt the book.
I am currently working on a small flowchart to show how the DRM process could look like.