University System of Maryland

Other

Vladimir Iankov Ivanov

John S Baras

Methods and apparatuses for authenticating communication devices and securely transmitting and/or receiving encrypted voice and data information. A biometric scanner, for example a fingerprint scanner, is utilized for authenticating the communication device and for generating the encryption key. The fingerprint scanner can be an area or swipe type of scanner is registered to a particular user and has unique intrinsic characteristics (the scanner pattern) that are permanent over time and can identify the scanner even among scanners of the same manufacturer and model. The unique scanner pattern of the scanner generates a unique encryption key that cannot be reproduced using another fingerprint scanner.

Method and apparatus for authenticating device and for sending/receiving encrypted information

Methods and apparatuses for authenticating a biometric scanner, such as swipe type finger print scanners, involves estimating unique intrinsic characteristics of the scanner (scanner pattern), that are permanent over time, and can identify a scanner even among scanners of the same manufacturer and model. Image processing and analysis are used to extract a scanner pattern from images acquired with the scanner. The scanner pattern is used to verify whether the scanner that acquired a particular image is the same as the scanner that acquired one or several images during enrollment of the biometric information. Authenticating the scanner can prevent subsequent security attacks using counterfeit biometric information on the scanner, or on the user authentication system.

Method and apparatus for authenticating swipe biometric scanners

Methods and apparatuses for authenticating a biometric scanner, such as area type finger print scanners, involves estimating unique intrinsic characteristics of the scanner (scanner pattern), that are permanent over time, and can identify a scanner even among scanners of the same manufacturer and model. Image processing and analysis are used to extract a scanner pattern from images acquired with the scanner. The scanner pattern is used to verify whether the scanner that acquired a particular image is the same as the scanner that acquired one or several images during enrollment of the biometric information. Authenticating the scanner can prevent subsequent security attacks using counterfeit biometric information on the scanner, or on the user authentication system.

Method and apparatus for authenticating area biometric scanners

Methods and systems involving image processing extract from an image and estimate unique intrinsic characteristics (scanner pattern) of a biometric scanner, such as area type fingerprint scanner. The scanner pattern is permanent over time, can identify a scanner even among scanners of the same manufacturer and model, and can be used to verify if a scanner acquired an image is the same as the scanner used for biometric enrollment, i.e., to authenticate the scanner and prevent security attacks on it. One method comprises selecting pixels from an enrolled and query image, masking useful pixels from the images, computing a similarity score between the common pixels of the enrolled and query useful pixels, and comparing this score with a threshold to determine whether the query image has been acquired by the same scanner as the enrolled image. The method can further comprise inverting the pixel values and/or filtering the selected pixels.

Method and apparatus for authenticating biometric scanners

A method and apparatus for authenticating a biometric scanner involves estimating unique intrinsic characteristics of the scanner (scanner pattern), that are permanent over time, and can identify a scanner even among scanners of the same manufacturer and model. Image processing and analysis are used to extract a scanner pattern from images acquired with the scanner. The scanner pattern is used to verify whether the scanner that acquired a particular image is the same as the scanner that acquired one or several images during enrollment of the biometric information. Authenticating the scanner can prevent subsequent security attacks using counterfeited biometric information on the scanner, or on the user authentication system.

A method for structuring the process of participatory document evaluation by a plurality of reviewers utilizing a feed-forward synchronization schema defined as a workflow graph (52) construct. The workflow graph construct allows one to define efficient document evaluation strategies that take advantage of the inherent parallelism within a business process, and take into account the data dependencies exhibited by the business process. Independent aspects of each document are evaluated in parallel, and a stage evaluation is started when all required data (including data provided by other reviewers) is available. The workflow graph construct assembles together a set of workflow objects (review (46), roles (48), stages (50), document (44)), and associates a set of functional properties to each of them. The topology of the workflow graph describes the synchronization schema, while the functional properties provide additional flexibility and further refine the evaluation strategy. A method for managing the process of participatory document evaluation by a plurality of reviewers utilizing a programmed computer system. Documents to be reviewed are prepared by a set of preparers, and are stored into a database (38). Reviewers participate in the review process by evaluating aspects of the document within their area of expertise. Depending on the information in each individual document, a set of reviewers is notified that the document is ready for their review. Each reviewer is notified at the time appropriate for his/her role via electronic mail by a workflow manager (30).

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Hyattsville, MD, United States of America

Vladimir Iankov Ivanov