Sony Corporation

Sun Microsystems, Inc.

Sony Electronics Inc

Carl E Quinn

Eric J Swenson

Motomasa Futagami

Pierre Chavanne

Ralph D Hill

John P Hwa

Lakshmana Pamarthy

Atsushi Mituszawa

Torbjorn Norbye

Joseph Paul Nuxoll

One embodiment of the present invention provides a system that facilitates creating a hierarchical model from a programming language file that includes components. The system operates by obtaining a component from the programming language file. Upon obtaining the component, the system passes an encoder to the component and requests that the component encode itself using the encoder, thereby causing the encoder to generate elements in the hierarchical model. Each element includes an attribute that identifies the component, thereby allowing the component to be subsequently identified by referencing the attribute in the corresponding element in the hierarchical model.

Method and apparatus for creating a hierarchical model to facilitate identifying components in a programming language file

Protection of digital content using a specific application of block cipher cryptography is described. The digital content is encrypted using an encryption key and a calculated initialization vector. The digital content includes a plurality of strides of data and each stride includes a string of data to be encrypted and a block of data to be encrypted. The calculated initialization vector to be used to encrypt the block of data is derived from the string of data in the stride to be encrypted. Furthermore, the initialization vector is calculated by performing an exclusive disjunction function on a seed value and the string of data for each stride.

Protection of digital content using block cipher crytography

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San Jose, CA, United States of America

Carl E Quinn