Chips and Technologies, Llc.

Verayo, Inc.

Richard Sowell

Srinivas Devadas

Stuart T Auvinen

Zdenek Paral

Vivek Khandelwal

William Henry Bares

Tonghang Zhou

A message is signed using a PUF without having to exactly regenerate a cryptographic key. Another party that shares information about the PUF is able to verify the signature to a high degree of accuracy (i.e., high probability of rejection of a forged signature and a low probably of false rejection of a true signature). In some examples, the information shared by a recipient of a message signature includes a parametric model of operational characteristics of the PUF used to form the signature.

Soft message signing

An efficient and optimized FIFO memory for use in a bus master system utilizes a multiplexing clock from which control signal defining bus cycles on asynchronous system and local buses. The FIFO facilitates interleaved access by system and local buses to support high speed data transfers from devices on one bus to the other bus.

FIFO for coupling asynchronous channels

An apparatus and method for operating a system component in a microprocessor system. The component is operated by a component controller which runs off a clock having a frequency different than the system clock. The controller is synchronized with the system clock at the conclusion of a component access cycle. The state machine of the controller can thus operate independently of the system clock and timing options implemented by the controller need not have an even number of states.

Non-aligned DRAM state machine for page-mode DRAM control

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San Jose, CA, United States of America

Richard Sowell