MARC THOMAS KAUFMAN
Pilots at Mtn Mdw Rd, Redwood City, CA
License number
California A0988836
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
17 Mountain Meadow Rd, Redwood City, CA 94062
Professional information
Distributed Validation Of Digitally Signed Electronic Documents
US Patent:
2014004, Feb 6, 2014
Filed:
Jul 31, 2012
Appl. No.:
13/562532
Inventors:
Isak Tenenboym - San Jose CA, US
Philip G. Levy - Los Altos CA, US
Marc T. Kaufman - Woodside CA, US
John T. Landwehr - Vienna VA, US
Philip G. Levy - Los Altos CA, US
Marc T. Kaufman - Woodside CA, US
John T. Landwehr - Vienna VA, US
International Classification:
H04L 9/32
US Classification:
713157, 713155, 713156, 713158
Abstract:
Systems and methods are presented for distributed validation of a digitally signed electronic document. A computing device accesses both a representation of the electronic document and a digital signature for the electronic document that includes a digest generated by the digital signature's creator by applying a one-way function to the electronic document. The computing device applies the same one-way function to the accessed representation of the electronic document to generate a new digest, and includes both the digital signature and the new digest in a request sent to a separate validation server. The request does not include the electronic document. The validation server generates validation results that depend on comparing the digest from the digital signature with the new digest, and that do not depend on having the electronic document available to the validation server. The computing device receives the validation results from the separate validation server.
Method And System For Collaborative Editing
US Patent:
7769810, Aug 3, 2010
Filed:
Apr 26, 2007
Appl. No.:
11/796037
Inventors:
Marc T. Kaufman - Woodside CA, US
Assignee:
Adobe Systems Incorporated - San Jose CA
International Classification:
G06F 15/16
US Classification:
709205, 709246, 709248, 715753
Abstract:
A system for collaborative editing may include a viewer to open a master copy of an electronic document in a local editor, a first queue to store edit operations requested by the local editor, a second queue to store edit operations requested by the remote editor, an update detector to detect a request from the remote editor to perform an edit operation on a remote copy of the electronic document, an update module to perform the edit operation on the master copy of the electronic document and to update the second queue with the edit operation, and a distributor to propagate the edit operation to the remote copy of the electronic document.
Method And System For Secure Form Delivery
US Patent:
2014003, Jan 30, 2014
Filed:
Nov 8, 2006
Appl. No.:
11/594467
Inventors:
Marc T. Kaufman - Woodside CA, US
Genevieve Laroche - San Jose CA, US
Roberto Perelman - Sunnyvale CA, US
Joseph D. Steele - Danville CA, US
Genevieve Laroche - San Jose CA, US
Roberto Perelman - Sunnyvale CA, US
Joseph D. Steele - Danville CA, US
International Classification:
G06F 21/62
US Classification:
713165
Abstract:
A system, for secure form delivery, may include a detector to detect a request to submit an electronic form that includes associated application data; an encryption module to respond to the request to submit the electronic form by automatically accessing an encryption key, determining destination information, and encrypting the associated application data, utilizing the encryption key; and a submit module to submit the electronic form to a destination, utilizing the destination information.
Methods And Apparatus For Validating A Digital Signature
US Patent:
2014003, Jan 30, 2014
Filed:
May 28, 2009
Appl. No.:
12/474023
Inventors:
Isak Tenenboym - San Jose CA, US
Marc T. Kaufman - Woodside CA, US
Philip Levy - Los Altos CA, US
Marc T. Kaufman - Woodside CA, US
Philip Levy - Los Altos CA, US
Assignee:
Adobe Systems Incorporated - San Jose CA
International Classification:
H04L 9/32, G06F 3/048, G06F 17/00
US Classification:
713176, 715764, 715255
Abstract:
Various embodiments include one or more of systems, methods, software, and data structures for validating a digital signature, wherein common information in a certification chain is maintained in one entry of a Document Secure Store (DSS). The DSS separates the Long Term Validation (LTV) information from the digital signature, allowing amendment of and addition to the LTV information in the DSS after a digital signature is applied to a document.