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51. 发明申请

US20130326230A1 METHODS AND APPARATUS FOR DATA HASHING BASED ON NON-LINEAR OPERATIONS 有权
标题翻译：基于非线性运算的数据清理方法与设备
公开(公告)号：US20130326230A1
公开(公告)日：2013-12-05
申请号：US13485454
申请日：2012-05-31
申请人： Mathieu Ciet , Thomas Icart , Augustin J. Farrugia
发明人： Mathieu Ciet , Thomas Icart , Augustin J. Farrugia
IPC分类号： G06F21/00
CPC分类号： H04L9/0643
摘要： A method and an apparatus that provides a hard problem based hashing mechanism to improve security of hash functions are described. The hashing mechanism can include a custom padding and/or a post processing to a hashed value strengthened via operations specifying a hard problem. In one embodiment, a new hash function may be provided or defined directly without introducing or relying on existing hash functions to embed security features based on this hard problem. The new hash functions can be used in usual constructions implying hash functions. For example, the standard HMAC construction could be applied on these hash functions, standard signature algorithms or authentication protocol, etc.
摘要翻译：描述了提供基于硬问题的散列机制以提高散列函数的安全性的方法和装置。散列机制可以包括通过指定硬问题的操作来加强散列值的定制填充和/或后处理。在一个实施例中，可以直接提供或定义新的散列函数，而不引入或依赖现有的散列函数来基于这个难题来嵌入安全特征。新的哈希函数可以在通常的结构中使用，这意味着散列函数。例如，标准HMAC结构可以应用于这些散列函数，标准签名算法或认证协议等。

52. 发明申请

US20120254625A1 PROTECTING STATES OF A CRYPTOGRAPHIC PROCESS USING GROUP AUTOMORPHISMS 有权
标题翻译：使用组自动化保护CRIPTOGRAPHIC过程的状态
公开(公告)号：US20120254625A1
公开(公告)日：2012-10-04
申请号：US13076362
申请日：2011-03-30
申请人： Augustin J. FARRUGIA , Mathieu Ciet , Thomas Icart
发明人： Augustin J. FARRUGIA , Mathieu Ciet , Thomas Icart
IPC分类号： G06F21/24
CPC分类号： G06F21/602 , G06F21/52
摘要： In the field of computer enabled cryptography, such as a keyed block cipher having a plurality of rounds, the cipher is hardened against an attack by a protection process which obscures the cipher states and/or the round keys using the properties of group field automorphisms and applying multiplicative masks (instead of conventional XOR masks) to the states of the cipher, for encryption or decryption. This is especially advantageous in a “White Box” environment where an attacker has full access to the cipher algorithm, including the algorithm's internal state during its execution. This method and the associated computing apparatus are useful for protection against known attacks on “White Box” ciphers, by eliminating XOR operations with improved masking techniques and increasing complexity of reverse engineering and of attacks.
摘要翻译：在诸如具有多个回合的密钥分组密码的计算机启用密码学领域中，使用组域自动生成的属性，使密码状态和/或循环密钥隐藏的保护过程针对攻击进行加密，将乘法掩码（而不是常规XOR掩码）应用于密码的状态，以进行加密或解密。这在白盒环境中特别有利，在这种情况下，攻击者可以完全访问密码算法，包括算法执行过程中的内部状态。该方法和相关联的计算设备对于通过利用改进的掩蔽技术消除XOR操作并增加逆向工程和攻击的复杂性来防止已知的对白盒密码的攻击是有用的。

53. 发明申请

US20120045050A1 Apparatus and method for block cipher process for insecure environments 有权
标题翻译：用于不安全环境的块密码处理的装置和方法
公开(公告)号：US20120045050A1
公开(公告)日：2012-02-23
申请号：US12806768
申请日：2010-08-20
申请人： Augustin J. Farrugia , Thomas Icart , Mathieu Ciet
发明人： Augustin J. Farrugia , Thomas Icart , Mathieu Ciet
IPC分类号： H04L9/28
CPC分类号： H04L9/0631 , H04L2209/043 , H04L2209/16
摘要： Method and apparatus for increasing security of a cryptographic algorithm such as deciphering, enciphering, or a digital signature using a block type cipher such as AES implemented for instance in a “whitebox” model with the cipher key either known or unknown at the compilation time. This method is secure for use in entrusted environments, particularly for securing cryptographic keys. The look up tables characteristic of such algorithms are protected against attack here by making all such tables of the same size and indistinguishable, and further by masking the output values of such tables, typically where the tables carry out a permutation function or a logical exclusive OR operation.
摘要翻译：使用例如在“白盒”模式中实现的诸如AES之类的块类型密码的加密算法的安全性的加密算法的安全性的方法和装置，所述密码算法在编译时具有已知或未知的密码密钥。这种方法是安全的，用于委托环境，特别是用于保护加密密钥。这种算法特征的查找表可以通过使所有这些相同尺寸和不可区分的表格进行保护，防止这种攻击，并进一步通过掩蔽这些表的输出值，通常在表执行置换功能或逻辑异或操作。

54. 发明申请

US20100042851A1 Method for Securely Handling Data During the Running of Cryptographic Algorithms on Embedded Systems 审中-公开
标题翻译：在嵌入式系统运行加密算法期间安全处理数据的方法
公开(公告)号：US20100042851A1
公开(公告)日：2010-02-18
申请号：US12084487
申请日：2006-10-27
申请人： Benoit Chevallier-Mames , Mathieu Ciet , Karine Villegas , Jacques Fournier
发明人： Benoit Chevallier-Mames , Mathieu Ciet , Karine Villegas , Jacques Fournier
IPC分类号： G06F12/14
CPC分类号： H04L9/002 , G06F21/755
摘要： The invention relates to a method for handling data between two memory areas of an electronic component having at least one working memory area for carrying out operations on the component, which bring into play at least some of the data. The same memory areas are used for executing an operation, whatever the operation to be executed is, in such a manner that each operation has a hidden signal trace that is identical in terms of location leakage outside the component.
摘要翻译：本发明涉及一种用于处理具有至少一个工作存储区域的电子部件的两个存储区域之间的数据的方法，所述工作存储器区域用于对所述部件执行操作，这使得至少一些数据发挥作用。相同的存储区域用于执行操作，无论执行的操作如何，每个操作具有在组件外部的位置泄漏方面相同的隐藏信号迹线。

55. 发明授权

US09031228B2 Systems and methods for implementing block cipher algorithms on attacker-controlled systems 有权
标题翻译：用于在攻击者控制的系统上实现块密码算法的系统和方法
公开(公告)号：US09031228B2
公开(公告)日：2015-05-12
申请号：US13448385
申请日：2012-04-16
申请人： Mathieu Ciet , Augustin J. Farrugia , Filip Toma Paun
发明人： Mathieu Ciet , Augustin J. Farrugia , Filip Toma Paun
IPC分类号： H04L9/28 , H04L9/00 , H04L9/06
CPC分类号： H04L9/002 , H04L9/0618 , H04L9/0631 , H04L2209/043 , H04L2209/122 , H04L2209/125 , H04L2209/16
摘要： Systems and methods for an implementation of block cipher algorithms (e.g., AES) use lookup tables to obscure key information, increasing difficulty of reverse engineering efforts. The implementation encodes round key information into a first plurality of tables (T1), which when used for lookup operations also complete SubBytes operations, and output state in an encoded format. A Shiftrows operation is performed arithmetically on the output state. A second plurality of tables (T2) are used to perform a polynomial multiplication portion of MixColumns operation, and an XOR portion of MixColumns is performed arithmetically on the columns. Encoding from the T1 tables is made to match a decoding built into the T2 tables. Subsets of the T1 tables use the same T2 tables, reducing a memory footprint for the T2 tables. Multiple AES keys can be embedded in different sets of T1 tables that encode for the same set of T2 tables.
摘要翻译：用于实施块密码算法（例如，AES）的系统和方法使用查找表来掩盖关键信息，增加了逆向工程努力的难度。该实施方式将循环密钥信息编码到第一多个表（T1）中，当用于查找操作时也完成子字节操作，并且以编码格式输出状态。对输出状态进行算术运算。使用第二多个表（T2）来执行MixColumns操作的多项式乘法部分，并且对列进行算术运算的MixColumn的XOR部分。使T1表格的编码与T2表中内置的解码相匹配。 T1表的子集使用相同的T2表，减少了T2表的内存占用。可以将多个AES密钥嵌入到为同一组T2表编码的不同的T1表中。

56. 发明授权

US08196214B2 Method and apparatus for securing content using encryption with embedded key in content 有权
标题翻译：使用内嵌密钥加密保护内容的方法和装置
公开(公告)号：US08196214B2
公开(公告)日：2012-06-05
申请号：US12002098
申请日：2007-12-14
申请人： Augustin J. Farrugia , Gianpaolo Fasoli , Mathieu Ciet , Bertrand Mollinier Toublet
发明人： Augustin J. Farrugia , Gianpaolo Fasoli , Mathieu Ciet , Bertrand Mollinier Toublet
IPC分类号： G06F21/00
CPC分类号： H04L63/062 , G06F21/10 , H04L9/0827 , H04L9/0891 , H04L63/123 , H04L2209/605
摘要： Method and apparatus enabled by computer (or equivalent) hardware and software for protection of content such as audio and video to be downloaded or streamed over a computer network such as the Internet. The content is provided to the user via streaming or downloads in encrypted form. The encryption is such that the content key decryption information is transmitted so that it itself is encrypted to be both device and session unique. That is, the key information can be used only to extract the content decryption key for a particular session and for a particular client device such as an audio or video consumer playing device. This prevents any further use or copying of the content other than in that session and for that particular client. The specificity is accomplished by using a device unique identifier and antireplay information which is session specific for encrypting the content key. A typical application is Internet streaming of audio or video to consumers.
摘要翻译：用于保护诸如音频和视频的内容的计算机（或等效的）硬件和软件能够通过诸如因特网的计算机网络下载或流式传输的方法和装置。内容通过加密形式的流式传输或下载提供给用户。加密是使得内容密钥解密信息被发送，使得其本身被加密成为设备和会话唯一的。也就是说，密钥信息可以仅用于提取特定会话的内容解密密钥以及用于诸如音频或视频消费者播放设备的特定客户端设备。这可以防止在该会话和该特定客户端之外的内容的任何进一步的使用或复制。特异性通过使用设备唯一标识符和反重播信息来实现，该信息是会话专用于加密内容密钥。典型的应用是将音频或视频的互联网流传输给消费者。

57. 发明申请

US20110051931A1 ENCRYPTION METHOD AND APPARATUS USING COMPOSITION OF CIPHERS 有权
标题翻译：加密方法和使用碳粉组合物的设备
公开(公告)号：US20110051931A1
公开(公告)日：2011-03-03
申请号：US12551360
申请日：2009-08-31
申请人： Augustin J. FARRUGIA , Nicholas Sullivan , Gianpaolo Fasoli , Mathieu Ciet
发明人： Augustin J. FARRUGIA , Nicholas Sullivan , Gianpaolo Fasoli , Mathieu Ciet
IPC分类号： H04L9/00
CPC分类号： H04L9/083 , H04L9/0822 , H04L9/0827 , H04L2209/603
摘要： A method and associated apparatus for use in a data distribution process to allow an untrusted intermediary to re-encrypt data for transmission from an originator to a message receiver without revealing the data (message) or the cipher to the intermediary. This method uses a composition of two ciphers for re-encrypting the message at the intermediary, without revealing the plain text message or either cipher to the intermediary.
摘要翻译：一种在数据分发过程中使用的方法和相关联的装置，以允许不信任的中间人重新加密用于从发起者到消息接收者的传输的数据，而不向中介者显示数据（消息）或密码。该方法使用两个密码的组合来在中间人处重新加密消息，而不向中间人透露明文消息或密码。

58. 发明申请

US20090279691A1 SECURE DISTRIBUTION OF DATA OR CONTENT USING KEYLESS TRANSFORMATION 有权
标题翻译：使用无键转换安全地分发数据或内容
公开(公告)号：US20090279691A1
公开(公告)日：2009-11-12
申请号：US12118538
申请日：2008-05-09
申请人： Augustin J. Farrugia , Jean-Francois Riendeau , Mathieu Ciet
发明人： Augustin J. Farrugia , Jean-Francois Riendeau , Mathieu Ciet
IPC分类号： H04L9/28
CPC分类号： H04L9/3093 , H04L2209/08 , H04L2209/16 , H04L2209/603
摘要： A computer enabled method and apparatus for encrypting and decrypting data using a keyless transformation cryptographic technique. Data is protected using a keyless (unkeyed) complex mathematical transformation, in contrast to a traditional cryptographic algorithm using a secret key. This approach is resistant to both static analysis (hacking) performed on executable encryption/decryption code, as well as dynamic analysis performed during execution (runtime) of ciphering or deciphering. The method uses a family of asymmetric data transformations based on Galois field polynomials.
摘要翻译：一种使用无钥匙转换加密技术加密和解密数据的计算机启用的方法和装置。与使用秘密密钥的传统加密算法相比，使用无钥匙（无钥匙）复杂数学变换来保护数据。这种方法对于在可执行加密/解密代码上执行的静态分析（黑客）以及在加密或解密的执行（运行时）期间执行的动态分析都是耐受的。该方法使用基于伽罗瓦域多项式的非对称数据变换族。

59. 发明授权

US08874928B2 System and method for obfuscating constants in a computer program 有权
标题翻译：用于在计算机程序中模糊常数的系统和方法
公开(公告)号：US08874928B2
公开(公告)日：2014-10-28
申请号：US12263183
申请日：2008-10-31
申请人： Pierre Betouin , Mathieu Ciet , Augustin J. Farrugia
发明人： Pierre Betouin , Mathieu Ciet , Augustin J. Farrugia
IPC分类号： G06F11/30 , G06F12/14 , G06F21/12 , G06F9/45
CPC分类号： G06F21/125 , G06F8/41 , G06F8/42 , G06F8/427 , G06F8/433 , G06F8/434
摘要： Disclosed herein are systems, computer-implemented methods, and tangible computer-readable media for obfuscating constants in a binary. The method includes generating a table of constants, allocating an array in source code, compiling the source code to a binary, transforming the table of constants to match Pcode entries in an indirection table so that each constant in the table of constants can be fetched by an entry in the indirection table. A Pcode is a data representation of a set of instructions populating the indirection table with offsets toward the table of constants storing the indirection table in the allocated array in the compiled binary. The method further includes populating the indirection table with offsets equivalent to the table of constants, and storing the indirection table in the allocated array in the compiled binary. Constants can be of any data type. Constants can be one byte each or more than one byte each. In one aspect, the method further includes splitting constants into two or more segments, treating each segment as a separate constant when transforming the table of constants, and generating a function to retrieve and reconstruct the split constants.
摘要翻译：这里公开的是系统，计算机实现的方法和用于在二进制文件中混淆常数的有形计算机可读介质。该方法包括生成常量表，在源代码中分配数组，将源代码编译为二进制，将常数表变换为匹配间接表中的Pcode条目，以使常数表中的每个常数可以由间接表中的条目。 Pcode是填充间接表的一组指令的数据表示，其具有偏向于在编译的二进制文件中分配的阵列中存储间接表的常数表的偏移。该方法还包括使用与常数表相当的偏移量来填充间接表，并将该间接表存储在编译后的二进制数组中。常量可以是任何数据类型。常量可以是一个字节，也可以是一个以上的字节。在一个方面，该方法还包括将常数分成两个或更多个段，当变换常数表时，将每个段作为单独的常数来处理，以及生成检索和重构分裂常数的函数。

60. 发明授权

US08407248B2 System and method for authentication using a shared table and sorting exponentiation 有权
标题翻译：使用共享表进行身份验证的系统和方法，并排序求幂
公开(公告)号：US08407248B2
公开(公告)日：2013-03-26
申请号：US13244068
申请日：2011-09-23
申请人： Pierre Betouin , Mathieu Ciet , Augustin J. Farrugia
发明人： Pierre Betouin , Mathieu Ciet , Augustin J. Farrugia
IPC分类号： G06F7/00 , 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。

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