Invention Grant
- Patent Title: Watermark with data integrity verification
- Patent Title (中): 水印与数据完整性验证
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Application No.: US14153387Application Date: 2014-01-13
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Publication No.: US09137010B2Publication Date: 2015-09-15
- Inventor: Yaron Sella , Harel Cain , Michal Devir
- Applicant: Cisco Technology Inc.
- Applicant Address: US CA San Jose
- Assignee: Cisco Technology Inc.
- Current Assignee: Cisco Technology Inc.
- Current Assignee Address: US CA San Jose
- Agency: Hahn Loeser & Parks LLP
- Main IPC: H04L9/08
- IPC: H04L9/08 ; H04N1/32 ; G06F21/22

Abstract:
In one embodiment, a system including a processor is operative to receive a content item including a watermark encoding a series of encrypted bits deriving from encrypting an information element multiple times, extract at least some encrypted bits from at least part of the watermark, decrypt a series of N bits using a first key yielding a first value, the series of N bits including Q bits of the encrypted bits and K, greater than, or equal to zero, guessed bits, re-encrypt the first value using a second key yielding a second value, and compare at least part of the second value to M bits of the encrypted bits to determine if at least part of the second value matches the M bits in order to provide a level of confidence that the first value is the information element which was encrypted and embedded as the watermark.
Public/Granted literature
- US20150200773A1 Watermark With Data Integrity Verification Public/Granted day:2015-07-16
Information query