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File decryption interface

A file, encrypted file technology, used in electrical components, digital transmission systems, instruments, etc.

Active Publication Date: 2012-10-10
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although asymmetric cryptography is computationally expensive, it does not require the secure distribution of a common key between entities that need to communicate securely

Method used

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  • File decryption interface
  • File decryption interface
  • File decryption interface

Examples

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Embodiment Construction

[0028] Various embodiments are now described with reference to the drawings, wherein like reference numerals are used to refer to like elements throughout. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.

[0029] As used in this application, the terms "component," "system," and the like are intended to refer to a computer-related entity, either hardware, a combination of hardware and software, software, or software in execution. For example, a component can be, but is not limited to being, a program executing on a processor, a processor, an object, an executable, a thread of execution, a program, and / or a computer....

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Abstract

Systems and methodologies are described that facilitate digital rights management in a wireless communication environment. Generally, content (e.g., data files, video images, etc.) can be downloaded and maintained in its encrypted state to ensure protection of digital rights. Consequently, programming applications that utilize such content decrypt the content at the time of use (e.g., playback oraccess). A file interface can be provided that allows applications to access encrypted content utilizing a standardized file I / O interface. Decryption of content can be transparent to individual applications utilizing encrypted content. Therefore, modifications cryptographic algorithms or procedures and changes in key sizes need not affect the programming application.

Description

[0001] This application claims U.S. Provisional Application No. 60 / 789,264, filed April 4, 2006, entitled "BLOCK DECRYPTION IN DMSS VIRTUAL FILE I / O INTERFACE" rights and interests. The entirety of the applications cited above are incorporated herein by reference. technical field [0002] The following description relates generally to content protection, and particularly to decryption of data. Background technique [0003] Wireless networking systems have become a popular means by which most people worldwide communicate. Wireless communication devices have become smaller and more powerful in order to meet consumer needs and to improve portability and convenience. Consumers have become dependent on wireless communication devices such as cellular telephones, personal digital assistants (PDAs), and the like, demanding reliable service, expanded coverage, and increased functionality. [0004] One such function is the distribution of data-intensive content, such as video conte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/00G06F21/60G06F21/62
CPCG06F2221/2107G06F21/6218G06F21/602H04L9/0631H04L2209/603
Inventor 马克西姆·克拉斯尼扬斯基克里斯托弗·温格特普贾·阿加瓦尔
Owner QUALCOMM INC