At&t Intellectual Property I, LP

At+t Corp.

University of Pennsylvania

Trevor Jim

Andrea Giuseppe Forte

Juan A Garay

Evgene Vahlis

Matti A Hiltunen

Dan Suciu

Mohan Rajagopalan

Richard Dale Schlichting

Carl A Gunter

Methods of obtaining input on a physical input device are provided. A method includes superimposing an image of a virtual keypad over an image of a touchscreen keypad, wherein the virtual keypad device has a different layout than the touchscreen keypad, mapping a first input on the touchscreen keypad to a second input on the virtual keypad, wherein the second input is different from the first input, and displaying on the touchscreen keypad a visually encoded symbol that defines a mapping from the touchscreen keypad to the virtual keypad, wherein mapping the first input on the touchscreen keypad to the second input on the virtual keypad is performed in response to the visually encoded symbol.

Secure interactions involving superimposing image of a virtual keypad over image of a touchscreen keypad

Methods of obtaining input on a physical input device are provided. A virtual input device is superimposed over the physical input device. The virtual input device has a different layout than the physical input device, such that a first input on the physical input device is mapped to a different input on the virtual input device. In another aspect, methods of securing a transaction according include displaying a first input screen to a user, encrypting a scrambling key using a public key, the scrambling key defining a second input screen that has a different layout from the first input screen, transmitting the encrypted scrambling key to a user device, receiving an input from the user device, and mapping the input to the second input screen.

Secure interaction with input devices

Disclosed is an approach to system call monitoring in which authenticated system calls from an application are easily verified by an operating system kernel. The authenticated system call may be a system call augmented with extra arguments, which specify the policy for that call as well as a cryptographic message authentication code (MAC) that guarantees the integrity of the policy and the system call arguments. This extra information is used by the operating system kernel to verify the system call with little processing overhead. Versions of the applications in which regular system calls have been replaced by authenticated calls are generated automatically by a trusted installer program that reads the application binary, uses static analysis to generate policies, and then rewrites the binary with the authenticated calls. As a result, hacker attacks, malicious software and the like are less likely to be successful in compromising any computers or networks that employ such authenticated system calls.

System and method for enforcing application security policies using authenticated system calls

The occurrence of recursive loops between network elements are detected and prevented. One or more queries are generated that are sent between the network elements. One or more of the network elements detect the imminent occurrence of a recursive loop between the network elements, and prevent the recursive loop by generating an intensional answer in response to the query. The intensional answer contains rules.

Method for prevention of recursive loops between network elements

A verification method and system including a verifier which can both interpret policies and determine if they are satisfied, and request and obtain relevant certificates. This new architecture includes a verifier which itself can both direct a retrieval mechanism and use a local database of information. Users and applications can obtain and supply certificates to the verifier and the local database. The verifier may invoke a retrieval mechanism to obtain necessary certificates from other authenticated data servers and store them in a secondary database. The flexibility to allow for both on-line and off-line authenticated data server responses for verification is encompassed, as is an enhanced system for security including revocation of certificates using a polarity discipline, which allows data used for revocation to be handled with the same system used for other verification data without imperiling security.

Growing community of inventors

Princeton, NJ, United States of America

Trevor Jim