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51. 发明申请

US20080184041A1 Graph-Based Tamper Resistance Modeling For Software Protection 审中-公开
标题翻译：基于图形的防篡改建模软件保护
公开(公告)号：US20080184041A1
公开(公告)日：2008-07-31
申请号：US11694695
申请日：2007-03-30
申请人： Mariusz H. Jakubowski , Ramarathnam Venkatesan , Nenad Dedic
发明人： Mariusz H. Jakubowski , Ramarathnam Venkatesan , Nenad Dedic
IPC分类号： G06F11/30
CPC分类号： G06F21/554 , G06F21/14
摘要： Implementation of graph-based tamper resistance modeling for software protection is described. In one implementation, paths of execution of a program are modeled as a graph having nodes and edges. A tamper resistance tool receives an input program code corresponding to the program and generates a tamper-resistant program code using integrity checks. Values for the integrity checks are computed during program execution and are compared to pre-computed values to determine whether a section of the program has been tempered with. Values of the integrity checks may be accessed at any point in time during execution of the program.
摘要翻译：描述了用于软件保护的基于图形的防篡改建模的实现。在一个实现中，程序的执行路径被建模为具有节点和边的图。防篡改工具接收与程序相对应的输入程序代码，并使用完整性检查生成防篡改程序代码。完整性检查的值在程序执行期间计算，并与预先计算的值进行比较，以确定程序的某个部分是否已被调整。可以在执行程序期间的任何时间点访问完整性检查的值。

52. 发明申请

US20080102793A1 Automated Secure Pairing for Wireless Devices 有权
标题翻译：无线设备的自动安全配对
公开(公告)号：US20080102793A1
公开(公告)日：2008-05-01
申请号：US11555093
申请日：2006-10-31
申请人： Ganesh Ananthanarayanan , Sean Blagsvedt , Ramarathnam Venkatesan
发明人： Ganesh Ananthanarayanan , Sean Blagsvedt , Ramarathnam Venkatesan
IPC分类号： H04M1/66
CPC分类号： H04W12/06 , H04L63/18 , H04W12/04 , H04W84/18
摘要： Systems, methods, and/or techniques (“tools”) are described herein that relate to automated secure pairing for devices, and that relate to parallel downloads of content using devices. The tools for pairing the devices may perform authentication protocols that are based on addresses and on keys. The address-based authentication protocol may operate on address book entries maintained by the devices. The key-based authentication protocol may operate using a key exchange between the devices.
摘要翻译：这里描述了与设备的自动安全配对相关的系统，方法和/或技术（“工具”），并且涉及使用设备的内容的并行下载。用于配对设备的工具可以执行基于地址和密钥的认证协议。基于地址的认证协议可以对由设备维护的地址簿条目进行操作。基于密钥的认证协议可以使用设备之间的密钥交换来操作。

53. 发明申请

US20080005476A1 Software Protection Using Oblivious Data Structures 有权
标题翻译：使用有价值的数据结构进行软件保护
公开(公告)号：US20080005476A1
公开(公告)日：2008-01-03
申请号：US11627833
申请日：2007-01-26
申请人： Ramarathnam Venkatesan , Viktor Boyko
发明人： Ramarathnam Venkatesan , Viktor Boyko
IPC分类号： G06F12/08
CPC分类号： G06F12/1416 , G06F12/0802 , G06F12/1408 , G06F21/556
摘要： Software protection using data structures is described. In one implementation, an engine between the processor and the memory of a computing device encrypts and stores data and program variables in blocks of memory that correspond to nodes of a tree-like data structure. When accessed, the nodes of this search tree are rearranged according to various schemata to obscure memory access patterns from being detected by cache attacks or side-channel attacks. In one implementation, the data structure is a splay tree that self-rearranges upon access and increases efficiency while providing security.
摘要翻译：描述使用数据结构的软件保护。在一个实现中，处理器和计算设备的存储器之间的引擎将对应于树状数据结构的节点的数据块和程序变量加密并存储在存储器块中。当访问时，根据各种模式重新排列该搜索树的节点，以掩盖由高速缓存攻击或侧向信道攻击检测到的存储器访问模式。在一个实现中，数据结构是一个显示树，在访问时自我重新排列，并在提供安全性的同时提高效率。

54. 发明申请

US20070061580A1 A License-Based Cryptographic Technique, Particularly Suited For Use In A Digital Rights Management System, For Controlling Access And Use Of Bore Resistant Software Objects In A Client Computer 失效
标题翻译：基于许可证的密码技术，特别适合在数字版权管理系统中使用，用于控制客户端计算机中抵抗软件对象的访问和使用
公开(公告)号：US20070061580A1
公开(公告)日：2007-03-15
申请号：US11276749
申请日：2006-03-13
申请人： Ramarathnam Venkatesan , Yacov Yacobi
发明人： Ramarathnam Venkatesan , Yacov Yacobi
IPC分类号： H04L9/00
CPC分类号： H04N1/32288 , G06F21/10 , G10L19/018 , H04N1/32144 , H04N1/32299 , H04N7/17318 , H04N21/2541 , H04N21/2543 , H04N21/4627 , H04N21/6125 , H04N21/835 , H04N21/8358 , H04N2201/3233 , H04N2201/327
摘要： A technique for imparting substantial break-once-run-everywhere (BORE) resistance to passive and active software objects, and for controlling access and use of resulting protected objects by a client computer (400). Specifically, a relatively large number, n, of identical watermarks (1720) are embedded throughout a software object (1700), through use of n different secret watermark keys to form a protected object, with each key defining a pointer to a location in the protected object at which a corresponding watermark appears.
摘要翻译：一种用于向被动和主动的软件对象传递大量一次性破坏（BORE）抵抗的技术，以及用于由客户端计算机（400）控制对所产生的受保护对象的访问和使用。具体而言，通过使用n个不同的秘密水印密钥来形成受保护的对象，通过使用n个不同的秘密水印密钥来形成相对大数量的相同的水印（1720）（1720），每个键定义指向位于受保护的对象出现相应的水印。

55. 发明申请

US20070058802A1 Cryptosystem Based on a Jacobian of a Curve 审中-公开
公开(公告)号：US20070058802A1
公开(公告)日：2007-03-15
申请号：US11275218
申请日：2005-12-19
申请人： Kristin Lauter , Peter Montgomery , Ramarathnam Venkatesan
发明人： Kristin Lauter , Peter Montgomery , Ramarathnam Venkatesan
IPC分类号： H04L9/28
CPC分类号： H04L9/302 , H04L9/32 , H04L2209/20 , H04L2209/30
摘要： A cryptosystem has a secret based on an order of a group of points on a Jacobian of a curve. In certain embodiments, the cryptosystem is used to generate a product identifier corresponding to a particular product. The product identifier is generated by initially receiving a value associated with a copy (or copies) of a product. The received value is padded using a recognizable pattern, and the padded value is converted to a number represented by a particular number of bits. The number is then converted to an element of the Jacobian of the curve, and the element is then raised to a particular power. The result of raising the element to the particular power is then compressed and output as the product identifier. Subsequently, the encryption process can be reversed and the decrypted value used to indicate validity and/or authenticity of the product identifier.

56. 发明申请

US20060269167A1 Image comparison by metric embeddings 有权
公开(公告)号：US20060269167A1
公开(公告)日：2006-11-30
申请号：US11141362
申请日：2005-05-31
申请人： Ramarathnam Venkatesan , Matt Cary
发明人： Ramarathnam Venkatesan , Matt Cary
IPC分类号： G06K9/54 , G06K9/68
CPC分类号： G06K9/469 , G06K9/6892
摘要： Systems and methods are presented for image comparison by metric embeddings. In one implementation, a graph is created from each image to be compared. Graph metrics are then embedded in families of trees for each image. Minimum differences between the respective families of trees for different images are compiled into a matrix, from which a similarity measure is obtained for image comparison.

57. 发明申请

US20060248338A1 Systems and methods for generation and validation of isogeny-based signatures 有权
公开(公告)号：US20060248338A1
公开(公告)日：2006-11-02
申请号：US11119405
申请日：2005-04-29
申请人： David Jao , Peter Montgomery , Ramarathnam Venkatesan , Victor Boyko
发明人： David Jao , Peter Montgomery , Ramarathnam Venkatesan , Victor Boyko
IPC分类号： H04L9/00
CPC分类号： H04L9/3247 , G06F21/64 , H04L9/3073 , H04L9/321 , H04L2209/56
摘要： Techniques are described for generating and validating signatures. In an implementation, a method includes generating a signature by utilizing a plurality of isogenies included on a private key and incorporating the signature and a public key on a product, in which the public key is configured to validate the signature.

58. 发明授权

US07095873B2 Watermarking via quantization of statistics of overlapping regions 有权
标题翻译：通过对重叠区域的统计量量化进行水印
公开(公告)号：US07095873B2
公开(公告)日：2006-08-22
申请号：US10187073
申请日：2002-06-28
申请人： Ramarathnam Venkatesan , M. Kivanc Mihcak , Mustafa Kesal
发明人： Ramarathnam Venkatesan , M. Kivanc Mihcak , Mustafa Kesal
IPC分类号： G06K9/00
CPC分类号： G06T1/0028 , G06T2201/0052 , G06T2201/0202
摘要： An implementation of a technology, described herein, for facilitating watermarking of digital goods. At least one implementation, described herein, performs quantization watermarking based upon semi-global characteristics of multiple regions of the digital good. Such regions are permissively overlapping. The scope of the present invention is pointed out in the appending claims.
摘要翻译：本文描述的用于促进数字商品的水印加密的技术的实现。这里描述的至少一个实施方式基于数字商品的多个区域的半全局特性执行量化水印。这些区域是允许重叠的。在所附权利要求中指出了本发明的范围。

59. 发明授权

US07080249B1 Code integrity verification that includes one or more cycles 失效
标题翻译：包含一个或多个周期的代码完整性验证
公开(公告)号：US07080249B1
公开(公告)日：2006-07-18
申请号：US09670916
申请日：2000-09-29
申请人： Mariusz H. Jakubowski , Ramarathnam Venkatesan , Yacov Yacobi
发明人： Mariusz H. Jakubowski , Ramarathnam Venkatesan , Yacov Yacobi
IPC分类号： G06F1/26
CPC分类号： G06F21/125 , H04L9/3242
摘要： Cyclic verification of code integrity is applied to an object by identifying multiple segments of the object. Each segment is separated into multiple blocks, and a message authentication code (MAC) value of each of these segments is computed. The computed module MAC values are then incorporated into selected ones of the multiple segments (referred to here as “checker segments”), which may also have their MAC values incorporated into other checker segments. A new MAC value for each of the checker segments is then calculated. A new block is added to each of the checker segments that results in restoring the MAC value of the checker segment back to its original value. Thus, the checker segments can be subsequently verified based on the MAC values stored in other segments.
摘要翻译：通过识别对象的多个段来对代码完整性进行循环验证。每个段被分成多个块，并且计算每个这些段的消息认证码（MAC）值。计算出的模块MAC值然后被合并到多个段中的选定的一个（这里称为“检验器段”），其也可以将它们的MAC值合并到其他检验器段中。然后计算每个检查器段的新MAC值。每个检查器段都添加一个新的块，导致检查器段的MAC值恢复到原始值。因此，随后可以基于存储在其他段中的MAC值验证检验器段。

60. 发明申请

US20060080530A1 Integrity Ordainment and Ascertainment of Computer-Executable Instructions with Consideration for Execution Context 有权
标题翻译：计算机可执行指令的完整性和确定与执行情况的考虑
公开(公告)号：US20060080530A1
公开(公告)日：2006-04-13
申请号：US11275060
申请日：2005-12-06
申请人： Saurabh Sinha , Mariusz Jakubowski , Ramarathnam Venkatesan , Yuqun Chen , Matthew Cary , Ruoming Pang
发明人： Saurabh Sinha , Mariusz Jakubowski , Ramarathnam Venkatesan , Yuqun Chen , Matthew Cary , Ruoming Pang
IPC分类号： H04L9/00
CPC分类号： G06F21/52 , G06F21/64
摘要： An implementation of a technology, described herein, for facilitating the protection of computer-executable instructions, such as software. At least one implementation, described herein, may generate integrity signatures of one or more program modules—which are sets of computer-executable instructions—based upon a trace of activity during execution of such modules and/or near-replicas of such modules. With at least one implementation, described herein, the execution context of an execution instance of a program module is considered when generating the integrity signatures. With at least one implementation, described herein, a determination may be made about whether a module is unaltered by comparing integrity signatures. This abstract itself is not intended to limit the scope of this patent. The scope of the present invention is pointed out in the appending claims.
摘要翻译：本文描述的用于促进诸如软件的计算机可执行指令的保护的技术的实现。本文描述的至少一个实施方式可以基于在执行这些模块的执行过程中的活动痕迹和/或这种模块的近似副本来生成一个或多个程序模块的完整性签名，这些程序模块是计算机可执行指令的集合。利用这里描述的至少一个实现，在生成完整性签名时考虑程序模块的执行实例的执行上下文。利用这里描述的至少一个实现，可以通过比较完整性签名来确定模块是否不变。本摘要本身并不旨在限制本专利的范围。在所附权利要求中指出了本发明的范围。

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