Abstract: Systems and methods provide for communication of transaction data that is formatted according to a transaction type that is support by an access device. First transaction data may be formatted according to a first type of transaction supported by a first access device and second transaction data may be formatted according to a second type of transaction supported by a second access device. The first transaction data may be transmitted over a first communication link to the first access device and the second transaction data may be transmitted to the second access over a second communication link.

Abstract: Techniques for enhancing the security of a communication device when conducting a transaction using the communication device may include receiving a cryptogram generation key replenishment request that includes transaction log information derived from transaction data stored in a transaction log on a communication device, verifying that the transaction log information in the replenishment request is consistent with the previously received transaction information, and providing a new cryptogram generation key to the communication device in response to verifying the transaction log information in the replenishment request.

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: Systems and methods provide for communication of transaction data that is formatted according to a transaction type that is support by an access device. First transaction data may be formatted according to a first type of transaction supported by a first access device and second transaction data may be formatted according to a second type of transaction supported by a second access device. The first transaction data may be transmitted over a first communication link to the first access device and the second transaction data may be transmitted to the second access over a second communication link.

Abstract: Systems and methods provide for communication of transaction data that is formatted according to a transaction type that is support by an access device. First transaction data may be formatted according to a first type of transaction supported by a first access device and second transaction data may be formatted according to a second type of transaction supported by a second access device. The first transaction data may be transmitted over a first wireless communication link to the first access device and the second transaction data may be transmitted to the second access over a second wireless communication link.

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: 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: Embodiments of the invention are directed to systems, apparatus, and methods for multiple protocol transaction encryption. In one embodiment, a mobile device can initiate a transaction in accordance with a first transaction protocol, the first transaction protocol being associated with contactless unidirectional communication. The mobile device can receive transaction data for the transaction in accordance with a second transaction protocol, the transaction data being received from an access device. The mobile device can perform further processing using the received transaction data. In some embodiments, the mobile device may generate a cryptogram from one or more data included in the transaction data. The cryptogram may be provided to the access device via the first transaction protocol.

Abstract: Techniques for enhancing the security of a communication device when conducting a transaction using the communication device may include receiving a cryptogram generation key replenishment request that includes transaction log information derived from transaction data stored in a transaction log on a communication device, verifying that the transaction log information in the replenishment request is consistent with the previously received transaction information, and providing a new cryptogram generation key to the communication device in response to verifying the transaction log information in the replenishment request.

Abstract: Techniques for enhancing the security of a communication device when conducting a transaction using the communication device may include using a limited-use key (LUK) to generate a transaction cryptogram, and sending a token instead of a real account identifier and the transaction cryptogram to an access device to conduct the transaction. The LUK may be associated with a set of one or more limited-use thresholds that limits usage of the LUK, and the transaction can be authorized based on at least whether usage of the LUK has exceeded the set of one or more limited-use thresholds.

Abstract: Systems and methods provide for communication of transaction data that is formatted according to a transaction type that is support by an access device. First transaction data may be formatted according to a first type of transaction supported by a first access device and second transaction data may be formatted according to a second type of transaction supported by a second access device. The first transaction data may be transmitted over a first wireless communication link to the first access device and the second transaction data may be transmitted to the second access over a second wireless communication link.

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: Techniques for enhancing the security of a communication device when conducting a transaction using the communication device may include using a limited-use key (LUK) to generate a transaction cryptogram, and sending a token instead of a real account identifier and the transaction cryptogram to an access device to conduct the transaction. The LUK may be associated with a set of one or more limited-use thresholds that limits usage of the LUK, and the transaction can be authorized based on at least whether usage of the LUK has exceeded the set of one or more limited-use thresholds.