Qualcomm Incorporated

Nvidia Corporation

Zitovault, Inc.

Ron Keidar

Kirk Allan Burroughs

Alejandro Raul Holcman

Osman Koyuncu

Michael Kevin Batenburg

Liron Manor

Chong U Lee

Roberto Avanzi

Babak Aryan

Jayanth Mandayam

Eitan Yacobi

Nela Gurevich

Samer S Zreiq

Constantine Elster

Jeff D Smith

Rosario Cammarota

Stephen Michael Verrall

Yoram Rimoni

Assaf Shacham

Xu Guo

Gilad Bornstein

Sudeep Ravi Kottilingal

Igor Malamant

Tomer Rafael Ben-Chen

Eugen Pirvu

Simo Petteri Kangaslampi

Xinxing Hu

Yitzhak Sabo

Haim Weissmann

Hye Su Lee

Sudeep Kittilingal

Yau Chu

Chang-Kuk Choi

Timothy McElwee

Chenxi Zhang

Haim M Weissman

Approaches in accordance with various illustrative embodiments provide for the encryption of communications going into and out of a device, such as a chip or proprietary bus. The encryption can occur in a central Root-of-Trust (RoT), which can include agents for individual communication protocols to generate session keys used to encrypt communications for individual sessions, and the data can be sent to a crypto engine for the respective communication protocol. A key tunnel unit can be used to receive a wrapped session key over the public bus and then unwrap the key in hardware, then able to then transmit the unwrapped session key to the corresponding crypto engine without exposing the session key to software executing on the device outside the RoT. The receiving inline crypto engine can then use that session key to encrypt session data to be transmitted to a separate device or destination.

Secure key delivery

A router management server may be utilized to manage a plurality of home routers. Appropriate access control rules may be determined by the router management server for various client devices including IoT devices based on the type and/or make/model of the client devices. MAC address-bound WLAN passphrases may be assigned to the client devices and bound to the MAC addresses associated the client devices. Further, WLAN passphrases may be associated with expiration periods and/or access control rules. Therefore, a secure home network environment that takes into account the vulnerabilities of IoT devices may be achieved without the involvement of an IT department. Moreover, Flexibility of WLAN passphrase management may be improved.

MAC address-bound WLAN password

System and method for providing adaptive access to a hardware block on a computer system. In one embodiment, a method includes receiving a first access request and a second access request with an access controller, wherein the second access request is received sequentially after the first access request, and the first access request includes a first master identification and the second access request includes a second master identification, determining if the second master identification is equal to the first master identification, providing access to the second access request if the second master identification is equal to the first master identification, wherein the first master identification is associated with one or more hardware block interface values, invalidating the one or more hardware block interface values associated with the first master identification if the second master identification is not equal to the first master identification, and associating the one or more hardware block interface values with the second master identification and a corresponding privilege.

Adaptive access control for hardware blocks

A method includes: decrypting, in a device, a first subset of encrypted data using a cryptographic device key associated with the device to produce first plain text, where a set of encrypted data comprises the first subset of encrypted data and a second subset of encrypted data, and where the first subset of encrypted data and the second subset of encrypted data each contain less encrypted data than the set of encrypted data and are different from each other; decrypting, in the device, the second subset of encrypted data using the cryptographic device key to produce second plain text; encrypting, in the device, the first plain text using a first ephemeral key to produce first re-encrypted data; and encrypting, in the device, the second plain text using a second ephemeral key to produce second re-encrypted data, the second ephemeral key being different from the first ephemeral key.

Secure data re-encryption

Disclosed is a device that obtains and stores a secret key. The device may comprise a transceiver configured to: transmit a command for a secret key to a server; transmit an identifier to the server; and receive a wrapped secret key from the server. The device may further comprise: a storage device; and a processor. The processor may be coupled to the transceiver and the storage device and the processor may be configured to: receive the wrapped secret key from the transceiver; unwrap the wrapped secret key to obtain the secret key; and store the secret key in the storage device.

Apparatus and method to securely receive a key

A processor for processing data from a buffer memory, implemented in hardware, may allow writing of output data, processed based on input data from at least one secure location associated with a secure address range of the buffer memory, to one or more secure locations associated with the secure address range. Further, the processor may block writing of output data, processed based on input data from at least one secure location associated with the secure address range, to one or more insecure locations associated with an insecure address range of the buffer memory.

Apparatus and method for hardware-based secure data processing using buffer memory address range rules

Disclosed is an apparatus and method to securely activate or revoke a key. For example, the apparatus may comprise: a storage device to store a plurality of pre-stored keys; a communication interface to receive an activate key command and a certificate associated with one of the pre-stored keys; and a processor. The processor may be coupled to the storage device and the communication interface and may be configured to: implement the activate key command to reboot the apparatus with the pre-stored key and the certificate; and determine if the reboot is successful.

Computing device to securely activate or revoke a key

Disclosed is a method and apparatus to decrypt file segments in parallel. In one embodiment, an integrated circuit may be used with a storage device of a computing device that comprises: a hardware interface to communicate with the storage device; a crypto-engine to encrypt file segments to be stored on the storage device and to decrypt file segments read from the storage device; and a processor. The processor may be configured to: read a plurality of decrypted file segments from the storage device through the crypto-engine in parallel; and to store the plurality of decrypted file segments.

Apparatus and method to decrypt file segments in parallel

A secure boot method includes: obtaining a certificate digest at a digest processor from a write-once, always-on memory; calculating a flash digest using the digest processor by cryptographically processing a sensitive information image; and comparing, using the digest processor, the flash digest with the certificate digest.

Secure boot devices, systems, and methods

Techniques for preventing circumvention of digital rights management protections on electronic content are provided. A method according to these techniques includes receiving a content stream, obtaining samples from the content stream, generating a histogram based on the samples from the content stream, classifying the content stream as including audio content or non-audio content based on the histogram, and modifying portions of the content stream responsive to classifying the content stream as including non-audio content. The content stream can be modified such that any video content included in the content stream would be rendered unplayable, while audio content included in the content stream remains playable.

Countermeasures against audio/video content security domain crossing

This disclosure describes devices, systems and techniques relating to a dongle device that is designed to provide broadcast video capabilities to an electronic device. In one example, a dongle device is configured to communicatively couple to an electronic device, wherein the dongle device comprises a multimedia receiver that receives a broadcast that includes multimedia data, and a web server that communicates the multimedia data to a web browser of the electronic device.

Web server TV dongle for electronic device

Disclosed is an apparatus and method to protect against key tampering. A computing device may include a cryptoprocessor that is configured to: write a first word including a first portion of a key; and write a plurality of subsequent words each including a portion of the key. If a same word is written more than once, the key is reset and not validated.

Protection against key tampering

A of a method of securely transferring information between execution environments includes: receiving, at a crypto engine, original plaintext from a first execution environment; obtaining a first cryptographic key by the crypto engine, the first cryptographic key being retained in memory such that the first cryptographic key is associated with the first execution environment and a second execution environment that is not the first execution environment; encrypting the original plaintext by the crypto engine using the first cryptographic key to produce encrypted information, and storing the encrypted information in an intermediate storage location; obtaining, at the crypto engine, the encrypted information from the intermediate storage location; decrypting the encrypted information by the crypto engine using the first cryptographic key to produce reconstituted plaintext; and making the reconstituted plaintext available to the second execution environment by the crypto engine.

Secure execution environment communication

Disclosed is an apparatus and method to set the speed of a clock. A computing device may include a processor and a scheduler of the processor, the scheduler may be configured to: receive a plurality of votes for requested bandwidths from a plurality of different execution environments; sum the requested bandwidths; and set the clock speed based upon the sum of the requested bandwidths.

Growing community of inventors

San Diego, CA, United States of America

Ron Keidar