专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明授权

US08014520B2 Exponentiation ladder for cryptography 有权
标题翻译：密码学指数梯
公开(公告)号：US08014520B2
公开(公告)日：2011-09-06
申请号：US12054249
申请日：2008-03-24
申请人： Mathieu Ciet , Augustin J. Farrugia , Gianpaolo Fasoli , Filip Paun
发明人： Mathieu Ciet , Augustin J. Farrugia , Gianpaolo Fasoli , Filip Paun
IPC分类号： H04L9/28 , G06F7/483
CPC分类号： G06F7/723 , G06F7/556 , G06F2207/5561 , H04L9/3013 , H04L9/302
摘要： Method and apparatus for data security using exponentiation. This is suitable for public key cryptography authentication and other data security applications using a one-way function. A type of exponentiation is disclosed here where the bits of an exponent value expressed in binary form correspond to a course (path) in a given graph defining the one-way function. This uses an approach called here F sequences. Each value is in a ladder of a sequence of values, as defined from its predecessor values. This ladder satisfies certain algebraic identities and is readily calculated by a computer program or logic circuitry.
摘要翻译：使用取幂的数据安全的方法和装置。这适用于使用单向功能的公钥加密认证和其他数据安全应用。这里公开了一种取幂类型，其中以二进制形式表示的指数值的位对应于定义单向函数的给定图中的路线（路径）。这使用一种称为F序列的方法。每个值都位于一系列值的梯形图中，如其前导值所定义。该梯子满足某些代数标识，并且可以由计算机程序或逻辑电路容易地计算出来。

42. 发明申请

US20110179281A1 HASH FUNCTION USING A QUASI-GROUP OPERATION 审中-公开
标题翻译：使用组合操作的快速功能
公开(公告)号：US20110179281A1
公开(公告)日：2011-07-21
申请号：US12690740
申请日：2010-01-20
申请人： Benoit CHEVALLIER-MAMES , Mathieu Ciet , Augustin J. Farrugia
发明人： Benoit CHEVALLIER-MAMES , Mathieu Ciet , Augustin J. Farrugia
IPC分类号： H04L9/32
CPC分类号： H04L9/3247 , H04L9/3236 , H04L2209/12 , H04L2209/20
摘要： In the computer data security field, a cryptographic hash function process is embodied in a computer system or computer software or logic circuitry and is keyless, but highly secure. The process is based on (mathematical) quasi-group operations such as in the known “EDON-R” hash function. But here one or more blank rounds (iterations) of the quasi-group operation are concatenated to the EDON-R hash function operations, to overcome perceived security weaknesses in EDON-R.
摘要翻译：在计算机数据安全领域中，加密散列函数过程体现在计算机系统或计算机软件或逻辑电路中，并且是无钥匙的，但是非常安全。该过程基于（数学）准组操作，例如在已知的“EDON-R”散列函数中。但是这里准组操作的一个或多个空白回合（迭代）被连接到EDON-R散列函数操作，以克服EDON-R中感知到的安全性弱点。

43. 发明申请

US20110116624A1 SYSTEM AND METHOD FOR DATA OBFUSCATION BASED ON DISCRETE LOGARITHM PROPERTIES 有权
标题翻译：基于离散对数特性的数据吞吐系统与方法
公开(公告)号：US20110116624A1
公开(公告)日：2011-05-19
申请号：US12621153
申请日：2009-11-18
申请人： Augustin J. Farrugia , Benoit Chevallier-Mames , Mathieu Ciet , Jon McLachlan
发明人： Augustin J. Farrugia , Benoit Chevallier-Mames , Mathieu Ciet , Jon McLachlan
IPC分类号： G06F9/45 , H04L9/28
CPC分类号： G06F21/14 , G06F8/51 , H04L9/002 , H04L9/3013 , H04L2209/046 , H04L2209/08 , H04L2209/16
摘要： Disclosed herein are systems, computer-implemented methods, and computer-readable storage media for obfuscating data based on a discrete logarithm. A system practicing the method identifies a clear value in source code, replaces the clear value in the source code with a transformed value based on the clear value and a discrete logarithm, and updates portions of the source code that refer to the clear value such that interactions with the transformed value provide a same result as interactions with the clear value. This discrete logarithm approach can be implemented in three variations. The first variation obfuscates some or all of the clear values in loops. The second variation obfuscates data in a process. The third variation obfuscates data pointers, including tables and arrays. The third variation also preserves the ability to use pointer arithmetic.
摘要翻译：本文公开的是基于离散对数来混淆数据的系统，计算机实现的方法和计算机可读存储介质。实施该方法的系统识别源代码中的明确值，基于清除值和离散对数，用源代码替换变换值，并更新引用清除值的源代码部分，使得与变换值的交互提供与清除值的交互相同的结果。这种离散对数方法可以在三个变体中实现。第一个变体模糊了循环中的一些或全部清除值。第二个变体在一个过程中模糊数据。第三个变体模糊数据指针，包括表和数组。第三个变体也保留了使用指针算术的能力。

44. 发明申请

US20100306541A1 HASH FUNCTION USING A CARD SHUFFLING PROCESS 有权
标题翻译：使用卡片清理过程的快捷功能
公开(公告)号：US20100306541A1
公开(公告)日：2010-12-02
申请号：US12475384
申请日：2009-05-29
申请人： Benoit Chevallier-Mames , Mathieu Ciet , Augustin J. Farrugia
发明人： Benoit Chevallier-Mames , Mathieu Ciet , Augustin J. Farrugia
IPC分类号： H04L9/32 , H04L9/28 , A63F9/24
CPC分类号： H04L9/3236 , A63F1/12 , H04L9/0662
摘要： In the computer data security field, a cryptographic hash function process embodied in a computer system and which is typically keyless, but is highly secure. The process is based on the type of chaos introduction exhibited by a game process such as the well known shuffling of a deck of playing cards. Computation of the hash value (digest) is the result of executing in a model (such as computer code or logic circuitry) a game algorithm that models the actual game such as a playing card shuffling algorithm using the message as an input to the algorithm, then executing the card shuffling algorithm on the input. A state (order) of the modeled deck of cards after a shuffle (or multiple shuffles) gives the hash digest value.
摘要翻译：在计算机数据安全领域中，加密散列函数过程体现在计算机系统中，并且通常是无钥匙的，但是是高度安全的。该过程基于游戏过程所展示的混乱介绍的类型，诸如众所周知的一组扑克牌洗牌。哈希值（摘要）的计算是在模型（例如计算机代码或逻辑电路）中执行游戏算法的结果，该游戏算法对使用该消息作为该算法的输入的游戏卡混洗算法进行建模，然后在输入上执行卡混洗算法。混洗（或多次洗牌）后，建模卡牌的状态（顺序）给出散列摘要值。

45. 发明申请

US20100153450A1 SYSTEM AND METHOD FOR AUTHENTICATION USING A SHARED TABLE AND SORTING EXPONENTIATION 有权
标题翻译：使用共享表和分配引用进行认证的系统和方法
公开(公告)号：US20100153450A1
公开(公告)日：2010-06-17
申请号：US12334732
申请日：2008-12-15
申请人： Pierre Betouin , Mathieu Ciet , Augustin J. Farrugia
发明人： Pierre Betouin , Mathieu Ciet , Augustin J. Farrugia
IPC分类号： G06F17/30
CPC分类号： G06F21/31
摘要： Disclosed herein are systems, computer-implemented methods, and computer-readable media for authentication using a shared table. The method receives an authentication challenge from a first entity including an accumulator with an initial value, lists of elements in a shared table, and a list of sorting algorithms, each sorting algorithm is associated with one of the lists of elements and modified to include embedded instructions operating on the accumulator. The method then generates a temporary table for each list of elements in the shared table by copying elements from the shared table as indicated in each respective list of elements, each temporary table being associated with one sorting algorithm in the list of sorting algorithms. The method sorts each generated temporary table with the associated sorting algorithm, thereby updating the accumulator with the embedded instructions. Finally, the method transmits the updated accumulator to the first entity for verification.
摘要翻译：本文公开了系统，计算机实现的方法和用于使用共享表进行认证的计算机可读介质。该方法从包括具有初始值的累加器，共享表中的元素列表和排序算法列表的第一实体接收认证挑战，每个排序算法与元素列表中的一个相关联并被修改为包括嵌入在累加器上操作的指令。然后，该方法通过从每个相应的元素列表中指示的从共享表中复制元素来生成共享表中的每个元素列表的临时表，每个临时表与排序算法列表中的一个排序算法相关联。该方法使用相关联的排序算法对每个生成的临时表进行排序，从而用嵌入式指令更新累加器。最后，该方法将更新的累加器发送到第一实体进行验证。

46. 发明申请

US20090249108A1 SILENT TIME TAMPERING DETECTION 有权
标题翻译：静音时间检测
公开(公告)号：US20090249108A1
公开(公告)日：2009-10-01
申请号：US12058432
申请日：2008-03-28
申请人： Pierre Betouin , Mathieu Ciet , Augustin J. Farrugia
发明人： Pierre Betouin , Mathieu Ciet , Augustin J. Farrugia
IPC分类号： G06F1/14
CPC分类号： G06F1/14 , G06F21/57 , G06F21/71 , G06F2221/2151
摘要： Computers and other electronic devices typically include a timing operation such as a clock in an operating system. It is anticipated that hackers may tamper with this clock. This tampering might be especially advantage in the context of systems which provide for rental of audio and video content, such as movies. Tampering with the system clock on the playing device would allow an extension of the rental period to the detriment of the provider of the rental content. Hence the present method is directed to detecting clock modifications both in terms of time shifting and clock rate tampering. This detection is done using digital signal processing.
摘要翻译：计算机和其他电子设备通常包括定时操作，诸如操作系统中的时钟。黑客可能会篡改这个时钟。这种篡改在提供音频和视频内容的租赁（例如电影）的系统的上下文中可能是特别有利的。篡改播放设备上的系统时钟将允许延长租赁期限，从而损害租赁内容的提供商。因此，本方法旨在在时移和时钟速率篡改方面检测时钟修改。该检测使用数字信号处理完成。

47. 发明授权

US09274976B2 Code tampering protection for insecure environments 有权
标题翻译：为不安全环境提供代码篡改保护
公开(公告)号：US09274976B2
公开(公告)日：2016-03-01
申请号：US12940971
申请日：2010-11-05
申请人： Augustin J. Farrugia , Mathieu Ciet , Pierre Betouin
发明人： Augustin J. Farrugia , Mathieu Ciet , Pierre Betouin
IPC分类号： G06F12/14 , G06F21/12 , G06F21/14 , G06F21/64 , H04L9/00 , H04L9/32
CPC分类号： G06F12/1408 , G06F21/125 , G06F21/14 , G06F21/64 , H04L9/002 , H04L9/3239 , H04L2209/043 , H04L2209/16
摘要： In the field of computer software (code) security, it is known to include verification data such as hash values in or associated with the code to allow subsequent detection of tampering by a attacker with the code. This verification technique is used here in a “White Box” cryptographic process by tying the verification data to the content of functional table lookups present in the object (compiled) code, where values in the table lookups are selectively masked (prior to the source code being compiled into the subject code) by being subject to permutation operations.
摘要翻译：在计算机软件（代码）安全性方面，已知包括诸如散列值的验证数据或者与代码相关联，以允许随后用代码检测攻击者的篡改。这种验证技术在这里通过将验证数据与存在于对象（编译）代码中的功能表查找的内容相结合，在“白盒”密码过程中使用，其中表查找中的值被选择性地屏蔽（在源代码之前被编入主题代码）通过进行置换操作。

48. 发明授权

US08347098B2 Media storage structures for storing content, devices for using such structures, systems for distributing such structures 有权
标题翻译：用于存储内容的媒体存储结构，用于使用这种结构的装置，用于分发这种结构的系统
公开(公告)号：US08347098B2
公开(公告)日：2013-01-01
申请号：US11752276
申请日：2007-05-22
申请人： Augustin J. Farrugia , Gianpaolo Fasoli , Bertrand Mollinier Toublet , Mathieu Ciet
发明人： Augustin J. Farrugia , Gianpaolo Fasoli , Bertrand Mollinier Toublet , Mathieu Ciet
IPC分类号： H04L29/06
CPC分类号： G06F21/10
摘要： Some embodiments of the invention provide a content-distribution system for distributing content under a variety of different basis. For instance, in some embodiments, the content-distribution system distributes device-restricted content and device-unrestricted content. Device-restricted content is content that can only be played on devices that the system associates with the particular user. Device-unrestricted content is content that can be played on any device without any restrictions. However, for at least one operation or service other than playback, device-unrestricted content has to be authenticated before this operation or service can be performed on the content. In some embodiments, the system facilitates this authentication by specifying a verification parameter for a piece of device-unrestricted content. The content-distribution system of some embodiments has a set of servers that supply (1) media storage structures that store content, (2) cryptographic keys that are needed to decrypt device-restricted content, and (3) verification parameters that are needed to verify device-unrestricted content. In some embodiments, the device that receives the media storage structure inserts the received cryptographic key or verification parameter in the received media storage structure. In some embodiments, the set of servers also supply cryptographic content keys for the device-unrestricted content. These keys are used to decrypt the content upon arrival, upon first playback, or at some other time. However, some embodiments do not store these cryptographic keys in the media storage structures for the device-unrestricted content.
摘要翻译：本发明的一些实施例提供了一种用于在各种不同基础下分发内容的内容分发系统。例如，在一些实施例中，内容分发系统分发受设备限制的内容和设备无限制的内容。设备限制内容是只能在系统与特定用户关联的设备上播放的内容。设备无限制的内容是可以在任何设备上播放的内容，没有任何限制。然而，对于除播放之外的至少一个操作或服务，在可以对内容执行该操作或服务之前必须认证设备无限制的内容。在一些实施例中，系统通过为一片设备无限制内容指定验证参数来促进该认证。一些实施例的内容分发系统具有一组服务器，其提供（1）存储内容的媒体存储结构，（2）解密设备限制的内容所需的密码密钥，以及（3）需要的验证参数验证设备无限制的内容。在一些实施例中，接收媒体存储结构的设备将接收到的加密密钥或验证参数插入接收到的媒体存储结构中。在一些实施例中，该组服务器还提供用于设备无限制内容的加密内容密钥。这些密钥用于在到达时，首次播放时或在其他时间对内容进行解密。然而，一些实施例不将这些加密密钥存储在用于设备无限制内容的媒体存储结构中。

49. 发明授权

US08200727B2 Method and apparatus for verifying and diversifying randomness 有权
标题翻译：验证随机性多样化的方法和装置
公开(公告)号：US08200727B2
公开(公告)日：2012-06-12
申请号：US12031552
申请日：2008-02-14
申请人： Pierre Betouin , Mathieu Ciet , Augustin J. Farrugia , Gianpaolo Fasoli
发明人： Pierre Betouin , Mathieu Ciet , Augustin J. Farrugia , Gianpaolo Fasoli
IPC分类号： G06F1/02 , G06F11/30
CPC分类号： G06F7/58 , H04L9/0662 , H04L9/3236 , H04L2209/26 , H04L2209/603
摘要： Method and apparatus for ensuring randomness of pseudo-random numbers generated by a conventional computer operating system or electronic device. Typically pseudo-random number generators used in computer operating systems or electronic devices may be penetrated by a hacker (pirate), who penetrates a cryptographic or other supposedly secure process using the random numbers by tampering with the input random numbers, thus making them nonrandom. The present method and apparatus are intended to verify such random numbers to make sure that they are indeed random enough, by applying suitable random tests. Only if the values pass the test are they passed on for use in the cryptographic or other process. If they fail the test, a new set of random numbers is requested from the pseudo-random number generator. These are again tested. Further a diversity function may be applied to the random numbers even if they have passed the random number test in order to improve their randomness. This diversity function is for instance double encryption. An anti-replay feature is also included by which the pool of random numbers is subject to a check on each cycle to make sure that there has been no duplication of the input random numbers.
摘要翻译：用于确保由常规计算机操作系统或电子设备产生的伪随机数的随机性的方法和装置。在计算机操作系统或电子设备中使用的通常的伪随机数生成器可以被黑客（盗版者）穿透，黑客（盗版者）通过篡改输入的随机数来使用随机数进行加密或其他所谓的安全处理，从而使其不随机。本方法和装置旨在验证这样的随机数，以确保它们确实是随机的，通过应用适当的随机测试。只有当值通过测试时，它们才被传递以用于加密或其他过程。如果测试失败，则会从伪随机数发生器请求一组新的随机数。这些再次测试。此外，即使已经通过随机数测试来提高其随机性，也可以将分集函数应用于随机数。这种分集功能是例如双重加密。还包括反重播功能，通过该功能，随机数池将在每个周期进行检查，以确保输入随机数没有重复。

50. 发明申请

US20100306497A1 Computer implemented masked representation of data tables 有权
标题翻译：计算机实现数据表的屏蔽表示
公开(公告)号：US20100306497A1
公开(公告)日：2010-12-02
申请号：US12475377
申请日：2009-05-29
申请人： Augustin J. Farrugia , Mathieu Ciet , Pierre Betouin
发明人： Augustin J. Farrugia , Mathieu Ciet , Pierre Betouin
IPC分类号： G06F12/02
CPC分类号： G06F21/14
摘要： In the computer software field, method and apparatus to obfuscate (mask or hide) computer data which is part of or accessed by a computer program. The method protects (hides) accesses to tables of data in terms of the place or position of each element in the table. It does this by providing an intermediate table which describes the positions of the elements of the first table or tables, but in a transformed (modified) fashion.
摘要翻译：在计算机软件领域中，对计算机程序的一部分或访问的计算机数据进行混淆（掩蔽或隐藏）的方法和装置。该方法根据表中每个元素的位置或位置来保护（隐藏）对数据表的访问。它通过提供描述第一表或表的元素的位置但以变换（修改）的方式来提供中间表。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式