Darrell M Anderson

US Patent:

8090951, Jan 3, 2012

Filed:

Jul 25, 2003

Appl. No.:

10/627270

Inventors:

Úlfar Erlingsson - San Francisco CA, US
Xavier Boyen - Palo Alto CA, US
Darrell Anderson - Durham NC, US
Wayne Gray - Sunnyvale CA, US

Assignee:

Google Inc. - Mountain View CA

International Classification:

H04L 9/32

US Classification:

713176, 705 75, 283 13, 383176, 383308

Abstract:

Methods and systems are disclosed for providing secure transmissions across a network comprising a transmitting device and a receiving device. At the transmitting device, a stream of watermark bits is generated. Next, a plurality of watermarks is generated, each of the plurality of watermarks comprising an index number and a portion of the stream of watermark bits. The watermarks are inserted into each header of a plurality of outgoing packets. At the receiving device, the plurality of outgoing packets are received and it is determined if a received packet is valid based on the watermark in the header of the received packet. The stream of watermark bits may be generated using a stream cipher such as RC4, a block cipher such as 3DES in CBC mode, or other equivalent pseudo-random stream generating techniques.

US Patent:

8522034, Aug 27, 2013

Filed:

Aug 19, 2011

Appl. No.:

13/213943

Inventors:

Úlfar Erlingsson - San Francisco CA, US
Xavier Boyen - Palo Alto CA, US
Darrell Anderson - Durham NC, US
Wayne Gray - Sunnyvale CA, US

Assignee:

Google Inc. - Mountain View CA

International Classification:

H04L 9/32

US Classification:

713176, 713151, 713160, 713161, 726 14

Abstract:

Methods and systems are disclosed for providing secure transmissions across a network comprising a transmitting device and a receiving device. At the transmitting device, a stream of watermark bits is generated. Next, a plurality of watermarks is generated, each of the plurality of watermarks comprising an index number and a portion of the stream of watermark bits. The watermarks are inserted into each header of a plurality of outgoing packets. At the receiving device, the plurality of outgoing packets are received and it is determined if a received packet is valid based on the watermark in the header of the received packet. The stream of watermark bits may be generated using a stream cipher such as RC4, a block cipher such as 3DES in CBC mode, or other equivalent pseudo-random stream generating techniques.