Abstract: Digital certificates are signed by a server's private key and installed at lock controllers that restrict access to physical resources. The server's public key is distributed to lock controllers and to mobile electronic devices operated by users who are given access to the physical resources. Lock-access data is digitally signed by the server's private key and provided to mobile electronic devices to facilitate access. The lock controller validates lock-access data and grants access conditionally based on time, version, and/or identity data provided within lock-access data. The use of certificates reduces the need to rely on a security scheme specific to the network. Lock controllers can also broadcast status notifications, so that updates and log data can be securely communicated with the server using mobile electronic devices as a proxy. The system is highly scalable, as each lock controller need not track the full scope of access permissions.

Abstract: Digital certificates are signed by a server's private key and installed at lock controllers that restrict access to physical resources. The server's public key is distributed to lock controllers and to mobile electronic devices operated by users who are given access to the physical resources. Lock-access data is digitally signed by the server's private key and provided to mobile electronic devices to facilitate access. The lock controller validates lock-access data and grants access conditionally based on time, version, and/or identity data provided within lock-access data. The use of certificates reduces the need to rely on a security scheme specific to the network. Lock controllers can also broadcast status notifications, so that updates and log data can be securely communicated with the server using mobile electronic devices as a proxy. The system is highly scalable, as each lock controller need not track the full scope of access permissions.

Abstract: Digital certificates are signed by a server's private key and installed at lock controllers that restrict access to physical resources. The server's public key is distributed to lock controllers and to mobile electronic devices operated by users who are given access to the physical resources. Lock-access data is digitally signed by the server's private key and provided to mobile electronic devices to facilitate access. The lock controller validates lock-access data and grants access conditionally based on time, version, and/or identity data provided within lock-access data. The use of certificates reduces the need to rely on a security scheme specific to the network. Lock controllers can also broadcast status notifications, so that updates and log data can be securely communicated with the server using mobile electronic devices as a proxy. The system is highly scalable, as each lock controller need not track the full scope of access permissions.

Abstract: Different target transmit powers are determined for different wireless transmissions from a wireless device. The target transmit power of a wireless transmission may depend upon whether any transmitters other than the device to which the wireless transmission is to be sent are within range of the sending wireless device. The target transmit power of a wireless transmission may be based, at least in part, on a current location of a device to which one or more frames carried by the wireless transmission are addressed. The target transmit power of a wireless transmission may be based, at least in part, on confidentiality of data carried by the wireless transmission.

Abstract: A cryptographic key is used to secure a communication link between a first device and a second device. Generating the cryptographic key is accomplished by a) generating a first cryptographic key, b) generating a second cryptographic key, c) applying a hash function to packets transmitted over the communication link to create a hash result, and d) applying the hash function to the first cryptographic key, the second cryptographic key and the hash result.

Abstract: A first device has a display that is able to show information. The information is to be exchanged with a second device. The information is cleared from the display following receipt of an indication from the second device that the information has been successfully inputted at the second device.

Abstract: A system includes a wireless-enabled smart card reader able to be connected concurrently to at least two devices and a mobile device able to be connected wirelessly to the smart card reader and to control connections of the smart card reader.

Abstract: A first device has a display that is able to show information. The information is to be exchanged with a second device. The information is cleared from the display following receipt of an indication from the second device that the information has been successfully inputted at the second device.

Abstract: A system includes a wireless-enabled smart card reader able to be connected concurrently to at least two devices and a mobile device able to be connected wirelessly to the smart card reader and to control connections of the smart card reader.

Abstract: A mobile communications device for communicating with a wireless network is described. The device includes a processor, a communications sub-system connected to the processor for exchanging signals with the wireless network and with the processor, a user input device connected to the processor for sending user input signals to the processor in response to user inputs. A security module is associated with the processor for automatically taking a security action upon detecting a predetermined security user input through the user input device. The security action can include sending a duress message and/or wiping data stored on the device.

Abstract: Electronic messages are sent from a sending system to an identified recipient and are encoded using information contained in a certificate. A key store is accessed by a messaging application to determine if a certificate associated with the recipient is present. If no certificate is present in the key store the messaging application accesses one or more certificate services to obtain a certificate. Where validation of the retrieved certificate is required, the messaging application invokes a certificate validation process. One or more further certificates are obtained by the messaging application where the retrieved certificate is invalid.

Abstract: The present invention provides a method for notifying at least one invitee of an initial event of changes to the initial event. The method comprises receiving the initial event comprising a plurality of initial event elements and receiving an updated event comprising a plurality of updated event elements, each updated event element corresponding to a respective initial event element. The updated event elements are compared to the initial event elements to determine which of the updated event elements are changed event elements that differ from their respective initial event elements and the at least one invitee is notified of any specific changed event elements.

Abstract: A system includes a first wireless-enabled device that transparently stores confidential information and a second wireless-enabled device that stores the same confidential information. The confidential information is to be used to secure a wireless communication link between the first device and the second device. One or both of the first device and the second device is to delete the confidential information upon fulfillment of one or more conditions related to the communication link.

Abstract: A method and system for data protection for applications that includes registering applications with a storage cleaning mechanism so that the registered applications can receive notification of impending storage cleaning operations. Upon receiving notification of an impending cleaning operation, the registered applications can release or unreference storage so it can be cleaned of data.

Abstract: A system includes a wireless-enabled smart card reader able to be connected concurrently to at least two devices and a mobile device able to be connected wireles sly to the smart card reader and to control connections of the smart card reader.

Abstract: A device coupled to a smart card reader may request random data from a smart card inserted into the smart card reader, and the smart card reader may incorporate the random data into its randomness pool. A device having a source of random data may have a driver installed thereon for the smart card reader. The device may generate a random session key to encrypt traffic between the device and the smart card reader. The device may send an encrypted version of the random session key to the smart card reader. The smart card reader may decrypt the encrypted version and incorporate the random session key into its randomness pool. A smart card reader may incorporate random data received from a smart card inserted therein into its randomness pool.

Abstract: A system includes a wireless-enabled smart card reader able to be connected concurrently to at least two devices and a mobile device able to be connected wirelessly to the smart card reader and to control connections of the smart card reader.

Abstract: A mobile communications device for communicating with a wireless network. The device includes a processor, a communications sub-system connected to the processor for exchanging signals with the wireless network and with the processor, a user input device connected to the processor for sending user input signals to the processor in response to user inputs. A security module is associated with the processor for automatically taking a security action upon detecting a predetermined security user input through the user input device. The security action can include sending a duress message and/or wiping data stored on the device.

Abstract: A reader device includes a housing for receiving a smart card, a processor in electronic communication with an integrated circuit chip of the smart card when the smart card is received in the housing, a wireless communications device in electronic communication with the processor for enabling the reader device to transmit first encrypted information wirelessly and to receive second encrypted information wirelessly, and a memory in electronic communication with the processor that includes one or more routines executable by the processor. The one or more routines include a cryptographic module adapted to encrypt first information to create the first encrypted information and decrypt the second encrypted information to obtain second information. In addition, a communication system that includes the reader device and a computing device, wherein the reader device and computing device are able to wirelessly exchange information in a secure manner.

Abstract: A reader device includes a housing for receiving a smart card, a processor in electronic communication with an integrated circuit chip of the smart card when the smart card is received in the housing, a wireless communications device in electronic communication with the processor for enabling the reader device to transmit first encrypted information wirelessly and to receive second encrypted information wirelessly, and a memory in electronic communication with the processor that includes one or more routines executable by the processor. The one or more routines include a cryptographic module adapted to encrypt first information to create the first encrypted information and decrypt the second encrypted information to obtain second information. In addition, a communication system that includes the reader device and a computing device, wherein the reader device and computing device are able to wirelessly exchange information in a secure manner.