Protecting browser-viewed content from piracy

A non-transitory computer-readable storage medium having executable computer program instructions embodied therein for preventing unauthorized redistribution of content provided to a browser of a client device, actions of the computer program instructions comprising:

• receiving a request for content from a user, the request including an identifier of the user;
• generating an obfuscated version of browser-executable code stored in a code repository, the generating of the obfuscated version based at least in part on the identifier, the obfuscated version being functionally equivalent to the browser-executable code;
• encrypting the content based at least in part on the identifier;
• providing to the browser a web page configured to display the content and having a reference to the browser-executable code;
• and
• providing the obfuscated version of the browser-executable code and the encrypted content to the browser of the client device, wherein the obfuscated version of the browser-executable code is provided responsive to parsing of the web page by the browser and without receiving an explicit request from the user for the browser-executable code, and wherein the browser-executable code, when executed in the browser, causes decryption of the encrypted content and display of the content within the browser.

A computer system for preventing unauthorized redistribution of content provided to a browser of a client device, comprising:

• a computer processor;
• a code repository stored on a non-transitory computer-readable storage medium, the code repository storing browser-executable code;
• and
• a computer program executable by the computer processor and performing actions comprising:
• receiving a request for content from a user, the request including an identifier of the user;
• generating an obfuscated version of the browser-executable code stored in the code repository, the generating of the obfuscated version based at least in part on the identifier, the obfuscated version being functionally equivalent to the browser-executable code;
• encrypting the content based at least in part on the identifier;
• providing to the browser a web page configured to display the content and having a reference to the browser-executable code;
• and
• providing the obfuscated version of the browser-executable code and the encrypted content to the browser of the client device, wherein the obfuscated version of the browser-executable code is provided responsive to parsing of the web page by the browser and without receiving an explicit request from the user for the browser-executable code;
• wherein the browser-executable code, when executed in the browser, causes decryption of the encrypted content and display of the content within the browser.