会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 101. 发明授权
    • Scrambled digital data item
    • 加扰数字数据项
    • US09338405B2
    • 2016-05-10
    • US12224749
    • 2007-05-03
    • Keith MillarColin Harvey
    • Keith MillarColin Harvey
    • H04N7/16H04N7/167H04N7/173H04N21/2662H04N21/438H04N21/4405H04N21/4623H04N21/61H04N21/643
    • H04N7/1675H04N7/17318H04N21/2662H04N21/4384H04N21/4405H04N21/4623H04N21/6125H04N21/64322
    • A method of decrypting a scrambled digital data item at a client is disclosed, the method including: receiving actual control messages at the client, wherein each actual control message includes control word generating information for generating a control word associated with the actual control message; storing the actual control messages at the client; receiving the scrambled digital data item at the client independently of the actual control messages, wherein the scrambled digital data item includes a plurality of segments of scrambled digital data, each segment of scrambled digital data being associated with one of the actual control messages and being scrambled with the control word associated with the one of the actual control messages, and wherein the scrambled digital data item further includes a plurality of reference control messages, each segment of scrambled digital data comprising one of the reference control messages, each of the reference control messages including a control message reference value identifying the actual control message associated with the segment of scrambled digital data; and decrypting the scrambled digital data item using the plurality of actual control messages.
    • 公开了一种在客户端解密加扰的数字数据项的方法,所述方法包括:在客户端处接收实际控制消息,其中每个实际控制消息包括用于生成与实际控制消息相关联的控制字的控制字产生信息; 将实际控制消息存储在客户端; 在客户端独立于实际的控制消息接收加密的数字数据项,其中加密的数字数据项包括多个加扰的数字数据段,加扰的数字数据的每个段与实际控制消息中的一个相关联并被加扰 其中所述控制字与所述实际控制消息中的一个相关联,并且其中所述加密数字数据项还包括多个参考控制消息,所述加扰数字数据的每个段包括所述参考控制消息之一,所述参考控制消息中的每一个 包括识别与加扰的数字数据的段相关联的实际控制消息的控制消息参考值; 以及使用所述多个实际控制消息来解密所述经加扰的数字数据项。
    • 104. 发明授权
    • Automatic computer program obfuscation system
    • 自动计算机程序混淆系统
    • US09317667B2
    • 2016-04-19
    • US13945264
    • 2013-07-18
    • Cisco Technology Inc.
    • Harel CainGuy AdiniNir Moshe
    • G06F21/14
    • G06F21/14
    • A computer program obfuscating system including a processor to provide a computer program including at least one computer program variable, and add an opaque predicate to the computer program to obfuscate the computer program so that the opaque predicate added to the computer program comprises at least one polynomial including a polynomial P, during execution of the obfuscated computer program, the polynomial P is evaluated yielding at least one result including a first result R1, and during execution of the obfuscated computer program, the opaque predicate is evaluated based on the at least one result R1 such that a decision as to whether or not to perform the first command is dependent upon comparing the first result R1 to at least one value in accordance with a predetermined mathematical relationship. Related apparatus and methods are also included.
    • 一种计算机程序模糊系统,包括处理器,用于提供包括至少一个计算机程序变量的计算机程序,并向计算机程序添加不透明的谓词以混淆计算机程序,使得添加到计算机程序的不透明谓词包括至少一个多项式 包括多项式P,在执行混淆的计算机程序期间,评估多项式P产生包括第一结果R1的至少一个结果,并且在执行混淆的计算机程序期间,基于至少一个结果来评估不透明谓词 R1使得关于是否执行第一命令的决定取决于根据预定的数学关系将第一结果R1与至少一个值进行比较。 还包括相关的装置和方法。