Abstract: Reducing power consumption of an electrical device is provided. The electrical device includes a first and a second module. The first and second modules include a first and a second memory, and a first and second system on chip (SoC) respectively. The first and second SoCs include a first and a second micro-processor respectively. A PCI-e bus connects the modules. The second module enters a sleep mode state that includes a first and a second sleep mode. The second module transitions between the first and second sleep modes while in the sleep mode state. The second SoC reduces a power state of the second module during the first sleep mode, and powers off the second SoC during the second sleep mode.

Abstract: Reducing power consumption of an electrical device is provided. The electrical device includes a first and a second module. The first and second modules include a first and a second memory, and a first and second system on chip (SoC) respectively. The first and second SoCs include a first and a second micro-processor respectively. A PCI-e bus connects the modules. The second module enters a sleep mode state that includes a first and a second sleep mode. The second module transitions between the first and second sleep modes while in the sleep mode state. The second SoC reduces a power state of the second module during the first sleep mode, and powers off the second SoC during the second sleep mode.

Abstract: Protection of private keys used to digitally sign files to be downloaded to a terminal is accomplished by storing the private keys in smartcards, and arranging a secure processor unit embedded in the smartcard to perform all signing operations requiring access to the keys so that the keys never leave the card. In addition, access to the signing operations is protected by multiple PINs, which may be distributed to multiple individuals and/or used to establish different signing authorization levels associated with different types of files.

Abstract: Upon receiving a request to clear or reset a terminal, the terminal displays a random number, the random number is placed in a regular file and signed by a private key to created a signed clear file, the clear file is authenticated, and the original random number is replaced by a new random number, thereby ensuring the authenticity of the clear or reset request while protecting the terminal from replay attacks.

Abstract: Method and apparatus for managing sensitive data. In one embodiment, sensitive data are managed in a circuit arrangement that includes a processor, a RAM, a register, a security circuit, and a power supply. The power supply is arranged to provide power from a first power source when power is available from the first source and from a second power source when power is unavailable from the first source. The processor initially stores the sensitive data in the RAM while operating with power from the first source. Upon loss of power from the first source, the power supply provides power from the second source, and the processor copies the sensitive data from the slow discharging RAM to the register and erases the sensitive data from the RAM. If the second power source is removed, the processor clears the sensitive data from the register. When the security circuit detects an attack on the circuit arrangement, the processor erases the sensitive data from the RAM and from the register.

Abstract: Upon receiving a request to clear or reset a terminal, the terminal displays a random number, the random number is placed in a regular file and signed by a private key to created a signed clear file, the clear file is authenticated, and the original random number is replaced by a new random number, thereby ensuring the authenticity of the clear or reset request while protecting the terminal from replay attacks.

Abstract: Protection of private keys used to digitally sign files to be downloaded to a terminal is accomplished by storing the private keys in smartcards, and arranging a secure processor unit embedded in the smartcard to perform all signing operations requiring access to the keys so that the keys never leave the card. In addition, access to the signing operations is protected by multiple PINs, which may be distributed to multiple individuals and/or used to establish different signing authorization levels associated with different types of files.

Abstract: Prompt tables that permit numeric keys on the keypad of a PINpad terminal to be used for entry of numerical data other than PINs if and only if pre-formatted prompts or messages appropriate to the data have been previously displayed, are provided in the form of an authenticatable files that may be loaded into the PINpad, thereby permitting variation in the prompts and keypad assignments.