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公开(公告)号：CA2615333A1
公开(公告)日：2007-01-25
申请号：CA2615333
申请日：2006-07-12
Applicant: QUALCOMM INC
Inventor： AGGARWAL POOJA , WINGERT CHRISTOPHER
IPC: H04N7/167
Abstract: A method is disclosed for encrypting a multimedia file including parsing the multimedia file to identify a media data portion; encrypting the media data portion; and, combining the encrypted media data portion with a non-encrypted non-media data portion. A method is also disclosed for playing a multimedia file including parsing the multimedia file to identify an unencrypted metadata portion; using the unencrypted metadata portion to locate a position of interest in the media file, the position of interest having an associated encrypted media data portion; and, decrypting the associated encrypted media data portion. An apparatus for performing the methods is also disclosed herein.
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公开(公告)号：AT532359T
公开(公告)日：2011-11-15
申请号：AT05771720
申请日：2005-07-14
Applicant: QUALCOMM INC
Inventor： WINGERT CHRISTOPHER
Abstract: A method and apparatus of receiving one or more keys in a wireless communication system wherein each key is valid for a period of time are described. The method comprises determining (410) whether to request said one or more keys, requesting (412) delivery of said one or more keys and receiving said one or more keys attached to a non-key data message (224) during a scheduled connection for receiving non-key data.
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Patent Agency Ranking
公开(公告)号：CA2453109A1
公开(公告)日：2003-01-23
申请号：CA2453109
申请日：2002-07-02
Applicant: QUALCOMM INC
Inventor： BEN-ZUR LIAT , HOSE JESSE , POMES PAUL , WINGERT CHRISTOPHER , IRVINE ANN C , GOVINDASWAMY SENTHIL , MURSFELDT CURTIS D
IPC: H04L9/08 , H04L9/10 , H04N7/16 , H04N7/167 , H04N21/414
Abstract: An apparatus for installing a decryption key is initially arranged so that a decryption algorithm received by a control processor (312) is passed via a first interface path to a decryption processor. The algorithm is installed i n the decryption processor together with a program decryption key (328). The apparatus is subsequently arranged so that encrypted working decryption keys received by the control processor are passed on the decryption processor ove r the first interface path. The decryption processor decrypts the encrypted ke ys using the program decryption key. Decryption keys are thus obtained and are transferred (352) via a second interface path to decryptors for use in decrypting encrypted program signals input to the decryptors.
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公开(公告)号：BRPI0613730A2
公开(公告)日：2011-02-01
申请号：BRPI0613730
申请日：2006-07-12
Applicant: QUALCOMM INC
Inventor： WINGERT CHRISTOPHER , AGGARWAL POOJA
Abstract: A method is disclosed for encrypting a multimedia file including parsing the multimedia file to identify a media data portion; encrypting the media data portion; and, combining the encrypted media data portion with a non-encrypted non-media data portion. A method is also disclosed for playing a multimedia file including parsing the multimedia file to identify an unencrypted metadata portion; using the unencrypted metadata portion to locate a position of interest in the media file, the position of interest having an associated encrypted media data portion; and, decrypting the associated encrypted media data portion. An apparatus for performing the methods is also disclosed herein.
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公开(公告)号：BR0210946A
公开(公告)日：2006-10-24
申请号：BR0210946
申请日：2002-07-02
Applicant: QUALCOMM INC
Inventor： BEN-ZUR LIAT , MUSFELDT CURTIS D , WINGERT CHRISTOPHER , POMES PAUL , HOSE JESSE , IRVINE ANN C , GOVINDASWAMY SENTHIL
IPC: H04L9/08 , H04L9/10 , H04N7/16 , H04N7/167 , H04N21/414
Abstract: An apparatus for installing a decryption key is initially arranged so that a decryption algorithm received by a control processor is passed via a first interface path to a decryption processor. The algorithm is installed in the decryption processor together with a program decryption key. The apparatus is subsequently arranged so that encrypted working decryption keys received by the control processor are passed on to the decryption processor over the first interface path. The decryption processor decrypts the encrypted keys using the program decryption key. Decryption keys are thus obtained and are transferred via a second interface path to decryptors for use in decrypting encrypted program signals input to the decryptors.
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公开(公告)号：WO2007115332A3
公开(公告)日：2007-12-27
申请号：PCT/US2007066006
申请日：2007-04-04
Applicant: QUALCOMM INC , KRASNYANSKIY MAKSIM , WINGERT CHRISTOPHER , AGGARWAL POOJA
Inventor： KRASNYANSKIY MAKSIM , WINGERT CHRISTOPHER , AGGARWAL POOJA
CPC classification number: G06F21/602 , G06F21/6218
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 or access). 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.
Abstract translation: 描述了在无线通信环境中促进数字权限管理的系统和方法。 通常，可以将内容（例如，数据文件，视频图像等）下载并保持在其加密状态，以确保数字权利的保护。 因此，利用这样的内容的编程应用程序在使用时对内容进行解密（例如，回放或访问）。 可以提供允许应用程序使用标准化文件I / O接口访问加密内容的文件接口。 内容的解密对于使用加密内容的各个应用来说可以是透明的。 因此，修改密码算法或程序以及密钥大小的变化不必影响编程应用。
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7.发明公开
公开(公告)号：EP1425913A4
公开(公告)日：2010-04-28
申请号：EP02746834
申请日：2002-07-03
Applicant: QUALCOMM INC
Inventor： BEN-ZUR LIAT , MUSFELDT CURTIS D , WINGERT CHRISTOPHER , POMES PAUL , HOSE JESSE , IRVINE ANN C , GOVINDASWAMY SENTHIL
IPC: H04L9/08 , H04L9/10 , H04N7/16 , H04N7/167 , H04N21/414
CPC classification number: H04N7/162 , H04N7/1675 , H04N21/41415
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