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    • 1. 发明授权
    • Protecting browser-viewed content from piracy
    • 保护浏览器浏览的内容免受盗版
    • US08806187B1
    • 2014-08-12
    • US12958331
    • 2010-12-01
    • Gopal Venu VemulaBrad Hasegawa
    • Gopal Venu VemulaBrad Hasegawa
    • G06F21/00H04L29/06
    • H04L63/0428G06F17/30899G06F21/14G06F2221/0748H04L67/02H04L67/306H04L67/34H04L2463/041
    • A content server provides a browser of a client with encrypted content and with obfuscated browser-executable code for decrypting and displaying the content within the browser. Both the encrypted content and the obfuscated browser-executable code are generated based at least in part on an identity of the user requesting the content, and thus are different from encrypted content and obfuscated browser-executable code provided to other users. Further, in one embodiment the browser-executable code provided by the server changes periodically, such as weekly, thereby rendering ineffective any malicious software tools that obtain decrypted content by calling expected functions of the code. In one embodiment, the obfuscated browser-executable code for a user is pre-computed before that user makes a request for content.
    • 内容服务器为客户机的浏览器提供加密的内容和用于在浏览器内解密和显示内容的模糊浏览器可执行代码。 加密内容和模糊化浏览器可执行代码至少部分地基于请求内容的用户的身份而生成,并且因此不同于加密内容和提供给其他用户的模糊化浏览器可执行代码。 此外,在一个实施例中,由服务器提供的浏览器可执行代码周期性地改变,例如每周,从而通过调用代码的预期功能而使得通过调用预期功能获得解密内容的任何恶意软件工具变得无效。 在一个实施例中,在该用户对内容进行请求之前,预先计算用户的混淆浏览器可执行代码。
    • 8. 发明授权
    • Searching encrypted electronic books
    • 搜索加密电子书
    • US09116991B2
    • 2015-08-25
    • US13211191
    • 2011-08-16
    • Gopal Venu VemulaPaul M. Franceus
    • Gopal Venu VemulaPaul M. Franceus
    • G06F17/30
    • G06F17/30864
    • An e-book server creates index information for encrypted e-book content. The index information is used by a reader module to efficiently search the encrypted content. To create the index information, the e-book server identifies logical partitions of an e-book that include phrases, and creates encrypted segments including a portion of the e-book content that is not necessarily aligned with the logical partitions of the e-book. The e-book server then stores index information including a mapping between the encrypted segments and the phrases located in the logical partitions.
    • 电子书服务器为加密的电子书内容创建索引信息。 读取器模块使用索引信息来有效地搜索加密的内容。 为了创建索引信息,电子书服务器识别包括短语的电子书的逻辑分区,并且创建包括不一定与电子书的逻辑分区对齐的电子图书内容的一部分的加密段 。 然后,电子书服务器存储包括加密段和位于逻辑分区中的短语之间的映射的索引信息。
    • 10. 发明授权
    • Providing content to a user across multiple devices
    • 在多个设备上为用户提供内容
    • US08688984B2
    • 2014-04-01
    • US13458124
    • 2012-04-27
    • Nareshkumar RajkumarVinod Kumar RamachandranGopal Venu Vemula
    • Nareshkumar RajkumarVinod Kumar RamachandranGopal Venu Vemula
    • H04L9/32
    • H04L9/0861H04L9/3226H04L2209/42
    • Methods, systems, and apparatus, including computer programs encoded on a computer-readable storage medium, and including a method for providing content. The method comprises receiving a first login associated with a first anonymous identifier and first device, creating an associated first private-public key pair, storing a first private key locally in the first device, and publishing a first public key. The method further comprises receiving a second login from a second different device, creating a second private-public key pair, storing a second private key, publishing the second public key, creating a secret key using the first public key, and associating a second anonymous identifier with the secret key. The method further comprises subsequently receiving a login the first device, creating the secret key using the second public key, associating the first anonymous identifier with the secret key, receiving a request for content from either device, and providing content using the association.
    • 方法,系统和装置,包括在计算机可读存储介质上编码的计算机程序,并且包括用于提供内容的方法。 该方法包括接收与第一匿名标识符和第一设备相关联的第一登录,创建相关联的第一私钥对,本地在第一设备中存储第一私有密钥,以及发布第一公钥。 该方法还包括从第二不同设备接收第二登录,创建第二私钥对,存储第二私钥,发布第二公钥,使用第一公钥创建秘密密钥,以及将第二匿名 标识符与秘密密钥。 该方法还包括随后接收第一设备的登录,使用第二公共密钥创建秘密密钥,将第一匿名标识符与秘密密钥相关联,从任一设备接收对内容的请求,以及使用关联来提供内容。