Tomas Restrepo Madrid

Bio: Tomas Restrepo Madrid is an academic researcher. The author has contributed to research in topics: Password & Login. The author has an hindex of 1, co-authored 1 publications receiving 274 citations.

Smart Device User Authentication

Abstract: Techniques for simplifying an authentication process from the viewpoint of a user while providing improved security to the many users currently employing no or weak security techniques. In logging into a web site hosted by a web server, a session begins by a user connecting and logging in with a device, such as a personal computer. Rather than a user name and password approach which is presently typical, the personal computer communicates with another user device, such as a smart phone. In one approach, an encoded acoustic signal is employed for this communication. The smart phone securely communicates with an authentication server which informs the web server whether the user has been authenticated or not.

Secure authentication in a multi-party system

Abstract: A user device transmits a login request. A provider server, receives a random number from and transmits other information to an authentication server. The provider server transmits the random number to the device. The random number is transferred to a second user device, which transmits it to the authentication server. The authentication server transmits provider authentication policy requirements and further transmits the other information to the second device. The second device transmits user validation information to the authentication server. The authentication server determines that the transmitted validation information corresponds to the service provider authentication policy requirements, compares the validation information with stored validation information for the user to authenticate the user. The second device transmits a message, including the random number and the other information, signed with a user credential to the authentication server. The authentication server transmits notice of authentication and the signed message to the provider server.

Wearable electronic device

Abstract: In one embodiment, a device includes a device body that includes a touch-sensitive display and a processor. The device also includes a band coupled to the device body and an optical sensor in or on the band. The optical sensor faces outward from the band and captures images. The processor communicates with the optical sensor to process captured images.

Advanced authentication techniques and applications

Abstract: A system, apparatus, method, and machine readable medium are described for performing advanced authentication techniques and associated applications. For example, one embodiment of a method comprises: receiving a policy identifying a set of acceptable authentication capabilities; determining a set of client authentication capabilities; and filtering the set of acceptable authentication capabilities based on the determined set of client authentication capabilities to arrive at a filtered set of one or more authentication capabilities for authenticating a user of the client.

System, design and process for strong authentication using bidirectional OTP and out-of-band multichannel authentication

Abstract: Systems and methods of authentication according to the invention are provided comprising a user, a service client, a service server, a portable communications device and an authentication server, wherein the method comprises use of one time passwords and out-of-band outbound communication channels. This system gives access to authentication seekers based on OTP out of band outbound authentication mechanism. The authentication seeker or system user scans a multi-dimensional barcode or another like encoding mechanism and validates the client and triggers the out of band outbound mechanism. The portable mobile device invokes the client server to request authentication. The client server authenticates the user based on a shared secret key and the user is automatically traversed to the next page.

GUI transitions on wearable electronic device

Abstract: In one embodiment, an apparatus includes one or more processors and a memory coupled to the processors that includes instructions executable by the processors. When executing the instructions, the processors present on a display of the apparatus a first screen of a graphical user interface. The first screen includes one or more first elements. The processors receive user input indicating a transition in the graphical user interface and, in response to the user input, transition from the first screen to a second screen of the graphical user interface and apply one or more visual transition effects to the transition. The second screen includes one or more second elements.