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Lecture 22

CSCI 10 Lecture Notes - Lecture 22: Digital Rights Management, Copyright Term, KeygenPremium

2 pages102 viewsFall 2016

Computer Science
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CSCI 10 Day 21
Piracy and DRM(Digital Rights Management)
-STS Presentation Topics and Groups due today!
-Use .ignore(n, delim) to clean up
Definition: Extracts characters from the input sequence and discards them, until
either n characters have been extracted, or one compares equal to delim.
-But clean up has to go before getline.
US Copyright Law
Goal: Encourage creation of art and culture
How: Rewarding artist with exclusive rights to make/sell copies of works,
derivative of works, perform and display works
Limits: Rights expire 70 years after artists death
Copyright Infringement
The use of works protected by copyright law without permission, infringing
certain exclusive rights granted to the copyright holder, such as the right to
reproduce, distribute, display or perform the protected work, or to make
derivative works
-These words can be reinterpreted very differently…
Copyright Term Extension (History of law)
- Copyright Act of 1976: life + 50 years, creation + 75 years for corporate
- Copyright Term Extension act of 1998: life + 70 years; creation + 120
years for corporate
- We kept extending copyright term because of Disney for copyright of
Mickey Mouse
Illegal File sharing
- The practice of distributing or providing access to digital media, such as
computer programs, multimedia, documents or electronic books
- Can you re-implement a computer language?
- Many companies have re-implemented C++ based on their own needs
- Java isn’t a completely open language…yet
-Peer-to-peer(physically share copies of stuff)
-File sync services(Dropbox, Google Drive, etc.)
-File hosting services(Uploading files and link to them)
Digital Rights Management
Technologies that try to control the use of copyrighted material after its
-Microsoft Windows copies used to use fixed serial numbers, after keygen,
improved so that the software phones home, constantly checking whether the
number entered matches a valid copy of the software
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