Broadcom Corporation

Francis Chi-Wai Cheung

Iue-Shuenn Chen

Xuemin Chen

Longyin Wei

Rajesh Mamidwar

Ut Nguyen

Steve Rodgers

A system and method for processing information may include broadcasting information, which indicates program content for each of a plurality of channels communicated via a plurality of transport streams, to a plurality of processors. The plurality of processors identify which of the program content is associated with a particular one of the plurality of channels in each of the plurality of transport streams. The broadcasted information may be stored in a table in memory. The broadcasted information may include a packet identifier (PID) and/or a processor identifier associated with the PID that identifies at least one of the plurality of processors, such as parsers. The information may be stored in a table in memory prior to the broadcasting. The table may be indexed according to the plurality of channels.

System and method for transport PID broadcast scheme

A method for securely handling processing of information includes, in a chip, selecting one of a plurality of data processes based on a random index. After a randomly allocated time interval has elapsed, the selected one of the plurality of data processes may be initiated. The selected one of the plurality of data processes may include accessing data and/or acquiring the data. Burstiness of the data may be approximately equal to burstiness of data acquired by at least one of a plurality of clients on the chip. Data may be verified by the selected one of the plurality of data processes prior to the processing of the data.

Method and system for random data access for security applications

Systems and methods for processing media information are disclosed and may include tracking a number of times that at least one stored identifier that identifies program content for a particular data channel that is received via one of a plurality of multiplexed transport data streams is modified. At least a portion of the received program content for the particular data channel may be discarded based on the tracking. The at least one stored identifier that identifies the program content for the particular data channel may include a packet identifier (PID) and a processor identifier associated with the PID that identifies at least one of a plurality of processors that parses at least a portion of the program content for the particular data channel that is received via one of the plurality of multiplexed transport data streams.

System and method for transport PID version check

A method for securely handling processing of information in a chip may include randomly selecting one of a plurality of data processes based on a random process index. A time interval may be randomly allocated on the chip, for processing the randomly selected one of the plurality of data processes. When the randomly allocated time interval has elapsed, the randomly selected one of the plurality of data processes may be initiated. The randomly selected one of the plurality of data processes may include one or both of accessing data and acquiring the data. Data may be verified by the randomly selected one of the plurality of data processes prior to the processing of the data. The data may be verified utilizing at least one digital signature verification algorithm, such as a Rivest-Shamir-Adelman (RSA) algorithm and/or a secure hash algorithm (SHA-1).

Systems and methods that storage device content authentication are provided. A system that verfies storage device content received from a storage device may comprise, for exmple, a security processor coupled to the storage device. The security processor may be adapted to receive a partitioned storage device region from the storage device. The partitioned storage device region may comprise, for example, regional content and first hashed regional content. The security processor may generate, for example, second hashed regional content by performing a hashing function on the regional content received by the security processor. The security processor may compare, for example, the first hashed regional content to the second hashed regional content. The security processor may varify the regional content received by the security processor if the first hashed regional content is the same as the second hashed regional content.

Storage device content authentication

Methods and systems for random data access for security applications are disclosed and may comprise generating on a chip, a random process index. A data process may be randomly selected on the chip utilizing the generated random process index. A time interval may be randomly allocated on the chip. After the time interval, the randomly selected data process may initiate processing of data. The processing of the data may comprise accessing the data and/or acquiring the data. The data may be verified by the selected data process prior to the processing of the data. The data may be verified utilizing a digital signature verification algorithm, for example.

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Del Mar, CA, United States of America

Francis Chi-Wai Cheung