Spansion LLC.

Cypress Semiconductor Corporation

Nicolas Prawitz

Arnaud Boscher

Jean-Yves Grall

Roni Kornitz

Bruno Charrat

Jimmy K Lau

Elena Vasilievna Trichina

Helena Handschuh

Christophe Carvounas

Fredric Cherpantier

Joël Le Bihan

Cedric Colnot

Frederic Cherpantier

Julien Stern

Thomas Pornin

An example secure embedded device includes a secure non-volatile memory coupled to a processor. The processor provides a scramble or cipher key and uses a scramble algorithm or a cipher algorithm to scramble or cipher information received from an external device into transformed information. The processor writes a least a portion of the transformed information to a plurality of memory locations of the secure non-volatile memory. The plurality of memory locations is based on the scramble or cipher key.

Systems and methods for downloading code and data into a secure non-volatile memory

A method for downloading information into a secure non-volatile memory of a secure embedded device (SED) during a manufacturing or personalization process. The method involves communicating the information and a software program from a device to a temporary storage memory of the SED. The method also involves starting the software program provided to facilitate an initialization of a first key and to facilitate a transfer of at least a portion of the information from the temporary storage memory to the secure non-volatile memory. In response to starting, the software program, the first key is initialized and the portion of information is transformed into transformed information locally at the SED using at least one of a scramble algorithm and a cipher algorithm. Thereafter, the transformed information is written to a memory element of the secure non-volatile memory.

The claimed subject matter can provide an architecture that interfaces a single slave device such as a UICC smartcard with multiple host controllers. For example, a secondary host can be interfaced between a primary host (e.g., a controller in a cellular phone, a PDA, an MP3 player . . . ) to manage all transactions with the slave device. The secondary host can operate transparently to the primary host and thus does not require any modifications to the primary host. This can be accomplished, e.g., by employing the CMD channel (which is relatively sparsely used by the primary host) to communicate both commands and data with the slave.

Multiple communication channels on MMC or SD CMD line

Systems and methods that facilitate securing data associated with a memory from security breaches are presented. A memory component includes nonvolatile memory, and a secure memory component (e.g., volatile memory) used to store information such as secret information related to secret processes or functions (e.g., cryptographic functions). A security component detects security-related events, such as security breaches or completion of security processes or functions, associated with the memory component and in response to a security-related event, the security component can transmit a reset signal to the secure memory component to facilitate efficiently erasing or resetting desired storage locations in the secure memory component in parallel and in a single clock cycle to facilitate data security. A random number generator component can facilitate generating random numbers after a reset based on a change in scrambler keys used by a scrambler component to descramble data read from the reset storage locations.

Instant hardware erase for content reset and pseudo-random number generation

The claimed subject matter can provide an architecture that interfaces a single slave device such as a UICC smartcard with multiple host controllers. For example, a secondary host can be interfaced between a primary host (e.g. a controller in a cellular phone, a PDA, an MP3 player . . . ) to manage all transactions with the slave device. The secondary host can operate transparently to the primary host and thus does not require any modifications to the primary host. This can be accomplished, e.g. by employing the CMD channel (which is relatively sparsely used by the primary host) to communicate both commands and data with the slave. Moreover, the transactions initiated by the secondary host can be segmented into many smaller fragments and interleaved between transactions initiated by the primary host. In addition, the secondary host can temporarily take on the role of the slave device and affect direct communication with the primary host.

Systems and/or methods that facilitate expediently transmitting and programming data to an electronic device that contains nonvolatile memory are presented. A host component facilitates the determination of different clock frequencies that an electronic device(s) can accommodate for transmitting data to and receiving data from the electronic device. The host component can facilitate transmitting data to the electronic device at a higher clock frequency than the clock frequency utilized to transmit data from the electronic device to the host component in order to facilitate programming large amounts of data to the electronic device efficiently. The host component can select a downlink and/or uplink clock frequency based in part on the type of electronic device(s), the size of a memory buffer associated with the nonvolatile memory device, and/or a type of protocol associated with the electronic device.

Optimize personalization conditions for electronic device transmission rates with increased transmitting frequency

The claimed subject matter can provide an architecture that can transparently provide more robust interactions between a host device and a smartcard or other mass media storage device by way of block level read or write operations provided as part of a standard interface protocol. A virtual controller can be installed on the smartcard to manage access to the data store of a smartcard. The virtual controller can provide special objects (e.g., files, directories, partitions . . . ) to the host, and upon an access to one of these special files, call an application to manage pre- or post-processing of the data transferred between the host and the smartcard.

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Yvette, France

Nicolas Prawitz