The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 19, 2016
Filed:
Jul. 07, 2014
Cisco Technology Inc., San Jose, CA (US);
Itsik Mantin, Shoham, IL;
Aviad Kipnis, Jerusalem, IL;
CISCO TECHNOLOGY, INC., San Jose, CA (US);
Abstract
A method and system for embedding a watermark in block encrypted content, including encoding a bit string, the bit string including n bits, denoted b-b, the encoding including translating each bit, b-b, into a block of data, according to the following rule if b=1, then translate binto a block of data of a first type, and if b=0, then translate binto a block of data of a second type, thereby translating the n bits into n blocks of data corresponding to each bit b-b, arranging a composite block of data including the n blocks of data, and at least one additional block indicating the presence of the n blocks of data, and inserting the composite block of data into a content item as a watermark, wherein the watermarked content item is encrypted using an ECB mode of encryption. Related methods and apparatus are also described.