Abstract: Methods, systems, and devices are provided for authenticating API messages using PKI-based authentication techniques. A client system can generate a private/public key pair associated with the client system and sign an API message using the private key of the private/public key pair and a PKI-based cryptographic algorithm, before sending the signed API message to a server system. The server system (e.g., operated by a service provider) can authenticate the incoming signed API message using a proxy authenticator located in less trusted zone (e.g., a perimeter network) of the server system. In particular, the proxy authenticator can be configured to verify the signature of the signed API message using the public key corresponding to the private key and the same cryptographic algorithm. The authenticated API message can then be forwarded to a more trusted zone (e.g., an internal network) of the server system for further processing.

Abstract: Provided is a method for detecting group activities in a network. The method may include receiving interaction data associated with a plurality of interactions. For each account identifier associated with at least one interaction, a value may be determined for each of a first set of categories, and a vector may be generated based on the value for each category. The length of each vector may be determined. At least one relational graph may be generated based on the interaction data. Each relational graph may be associated with a respective category of a second set of categories. At least one cluster of nodes may be determined based on the relational graph(s). A score for each cluster may be determined based on the length of the vector associated with the account identifier of each node of the cluster of nodes. A system and computer program product are also disclosed.

Abstract: Embodiments of the invention are directed to methods, systems and devices for providing sensitive user data to a mobile device using an encryption key. For example, a mobile application on a mobile device may receive encrypted sensitive user data from a mobile application server, where the user sensitive data is encrypted with a key from a token server computer. The mobile application may then request that the encrypted payment information be sent to the token server. The mobile device may then receive a payment token associated with the payment information from the token server.

Abstract: A flexible passive capacitance pressure sensor includes a first polymeric substrate and a second polymeric substrate. An elastic dielectric sensing material is positioned between the inner-facing surface of the first polymeric substrate and the inner-facing surface of the second polymeric substrate. A first plurality of wires are positioned on the outer-facing surface of said first polymeric substrate, and a second plurality of wires positioned on the outer-facing surface of said second polymeric substrate. The plurality of wires form a flexible capacitor. With the reduced profile enabled by such a capacitor, the flexible passive capacitance pressure sensor can have a thickness of less than 200 microns.

Abstract: Embodiments of the invention are directed to methods, systems and devices for providing sensitive user data to a mobile device using an encryption key. For example, a mobile application on a mobile device may receive encrypted sensitive user data from a mobile application server, where the user sensitive data is encrypted with a key from a token server computer. The mobile application may then request that the encrypted payment information be sent to the token server. The mobile device may then receive a payment token associated with the payment information from the token server.

Abstract: An energy-efficient, wide-band, and compact wireless sensor reader remotely interrogates an implanted wireless inductive-capacitive (LC) sensor in order to measure a physiologic parameter of interest within a human body. The wireless sensor reader generates an instantaneous, spike-shaped, high-amplitude, low-energy pulse to excite the wireless LC sensor, causing it to emit a ring-down signal. The wireless sensor reader subsequently receives, amplifies, and filters the ring-down signal. Next, the wireless sensor reader digitizes the ring-down signal and transfers the digitized ring-down signal to a processing unit. The processing unit computes a Fast Fourier Transform (FFT) of the digitized ring-down signal and then locates the resonant frequency of the LC sensor using a threshold peak detection technique.

Abstract: Embodiments of the invention are directed to methods, systems and devices for providing sensitive user data to a mobile device using an encryption key. For example, a mobile application on a mobile device may receive encrypted sensitive user data from a mobile application server, where the user sensitive data is encrypted with a key from a token server computer. The mobile application may then request that the encrypted payment information be sent to the token server. The mobile device may then receive a payment token associated with the payment information from the token server.

Abstract: A sensor includes two coaxial RF shielding members arranged to create a coaxial RF shielding structure that is electrically open and is formed from partially enclosed cylindrical shells. The RF shielding members are spaced from one another. The sensor also includes one or multiple electrically conductive coaxial coils between the coaxial RF shielding members. This configuration creates an LC circuit without requiring a separate capacitor electrically connected to the inductor. The RF shielding structure minimizes the surrounding tissue effects (e.g., parasitic capacitance), which improves the overall accuracy of the sensor. The LC circuit also can be remotely interrogated by external reader.

Abstract: Methods, systems, and devices are provided for authenticating API messages using PKI-based authentication techniques. A client system can generate a private/public key pair associated with the client system and sign an API message using the private key of the private/public key pair and a PKI-based cryptographic algorithm, before sending the signed API message to a server system. The server system (e.g., operated by a service provider) can authenticate the incoming signed API message using a proxy authenticator located in less trusted zone (e.g., a perimeter network) of the server system. In particular, the proxy authenticator can be configured to verify the signature of the signed API message using the public key corresponding to the private key and the same cryptographic algorithm. The authenticated API message can then be forwarded to a more trusted zone (e.g., an internal network) of the server system for further processing.

Abstract: Methods, systems, and devices are provided for authenticating API messages using PKI-based authentication techniques. A client system can generate a private/public key pair associated with the client system and sign an API message using the private key of the private/public key pair and a PKI-based cryptographic algorithm, before sending the signed API message to a server system. The server system (e.g., operated by a service provider) can authenticate the incoming signed API message using a proxy authenticator located in less trusted zone (e.g., a perimeter network) of the server system. In particular, the proxy authenticator can be configured to verify the signature of the signed API message using the public key corresponding to the private key and the same cryptographic algorithm. The authenticated API message can then be forwarded to a more trusted zone (e.g., an internal network) of the server system for further processing.

Abstract: Methods, systems, and devices are provided for authenticating API messages using PKI-based authentication techniques. A client system can generate a private/public key pair associated with the client system and sign an API message using the private key of the private/public key pair and a PKI-based cryptographic algorithm, before sending the signed API message to a server system. The server system (e.g., operated by a service provider) can authenticate the incoming signed API message using a proxy authenticator located in less trusted zone (e.g., a perimeter network) of the server system. In particular, the proxy authenticator can be configured to verify the signature of the signed API message using the public key corresponding to the private key and the same cryptographic algorithm. The authenticated API message can then be forwarded to a more trusted zone (e.g., an internal network) of the server system for further processing.

Abstract: Described herein are systems and methods in which key values associated with events are aggregated as those events are processed by an event processing engine. In some embodiments, the system maintains a number of key-value mappings associated with a plurality of key values to be updated. Each key value may be associated with a key log that can be accessed to quickly generate useful information while minimizing the number of operations needed to generate that information. The key log may be updated each time that the associated key value is updated in order to maintain a running history of key-value updates.

Abstract: Methods, systems, and devices are provided for authenticating API messages using PKI-based authentication techniques. A client system can generate a private/public key pair associated with the client system and sign an API message using the private key of the private/public key pair and a PKI-based cryptographic algorithm, before sending the signed API message to a server system. The server system (e.g., operated by a service provider) can authenticate the incoming signed API message using a proxy authenticator located in less trusted zone (e.g., a perimeter network) of the server system. In particular, the proxy authenticator can be configured to verify the signature of the signed API message using the public key corresponding to the private key and the same cryptographic algorithm. The authenticated API message can then be forwarded to a more trusted zone (e.g., an internal network) of the server system for further processing.

Abstract: Methods, systems, and devices are provided for authenticating API messages using PKI-based authentication techniques. A client system can generate a private/public key pair associated with the client system and sign an API message using the private key of the private/public key pair and a PKI-based cryptographic algorithm, before sending the signed API message to a server system. The server system (e.g., operated by a service provider) can authenticate the incoming signed API message using a proxy authenticator located in less trusted zone (e.g., a perimeter network) of the server system. In particular, the proxy authenticator can be configured to verify the signature of the signed API message using the public key corresponding to the private key and the same cryptographic algorithm. The authenticated API message can then be forwarded to a more trusted zone (e.g., an internal network) of the server system for further processing.

Abstract: Embodiments of the invention are directed to methods, systems and devices for providing sensitive user data to a mobile device using an encryption key. For example, a mobile application on a mobile device may receive encrypted sensitive user data from a mobile application server, where the user sensitive data is encrypted with a key from a token server computer. The mobile application may then request that the encrypted payment information be sent to the token server. The mobile device may then receive a payment token associated with the payment information from the token server.

Abstract: A method is for preparing 1-(4-chlorophenyl)-2-cyclopropyl-1-propanone and an intermediate thereof, where in the method for preparing a compound of formula (I), ?-alkoxy p-chlorobenzyl phosphonate (II) and cyclopropyl methyl ketone are used as raw materials, and subjected to a Homer-Wadsworth-Emmons reaction in an organic solvent in the presence of a base, so as to prepare a derivative of alkoxy propylene with the structure of formula (III); and the resulting derivative of alkoxy propylene (III) is hydrolyzed under acidic conditions to obtain 1-(4-chlorophenyl)-2-cyclopropyl-1-propanone (I).

Abstract: A method is for preparing 1-(4-chlorophenyl)-2-cyclopropyl-1-propanone and an intermediate thereof, where in the method for preparing a compound of formula (I), ?-alkoxy p-chlorobenzyl phosphonate (II) and cyclopropyl methyl ketone are used as raw materials, and subjected to a Homer-Wadsworth-Emmons reaction in an organic solvent in the presence of a base, so as to prepare a derivative of alkoxy propylene with the structure of formula (III); and the resulting derivative of alkoxy propylene (III) is hydrolyzed under acidic conditions to obtain 1-(4-chlorophenyl)-2-cyclopropyl-1-propanone (I).

Abstract: 4-Substituted coumarin compounds having the general formula of where R is H, CHO, OCH3, X, NO2, an alkyl having C1-10, —OCH2O—, an aryl being mono- or poly-substituted with CN or COOCH3 with the aryl being a phenyl, naphthyl, or azaryl, or a coumarin group that is substituted with R1, R2, R3, R4, with R1, R2, R3, and R4 being H, an alkyl having C1-10, X, NO2, CN, OCH3, COOCH3 or OR5, R5 being H or an alkyl having C1-10, and X being a halogen.

Abstract: 4-Substituted coumarin compounds having the general formula of where R is H, CHO, OCH3, X, NO2, an alkyl having C1-10, —OCH2O—, an aryl being mono- or poly-substituted with CN or COOCH3 with the aryl being a phenyl, naphthyl, or azaryl, or a coumarin group that is substituted with R1, R2, R3, R4, with R1, R2, R3, and R4 being H, an alkyl having C1-10, X, NO2, CN, OCH3, COOCH3 or OR5, R5 being H or an alkyl having C1-10, and X being a halogen.