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1. 发明授权

US08265271B2 Method and device for managing a transmission of keys 有权
标题翻译：用于管理密钥传输的方法和设备
公开(公告)号：US08265271B2
公开(公告)日：2012-09-11
申请号：US12312318
申请日：2007-11-06
申请人： Mohamed Karroumi , Stephane Onno , Alain Durand
发明人： Mohamed Karroumi , Stephane Onno , Alain Durand
IPC分类号： H04L9/00 , H04K1/00 , G06F21/00
CPC分类号： H04N7/165 , H04N21/234327 , H04N21/2347 , H04N21/2662 , H04N21/4405 , H04N21/63345
摘要： The present invention concerns a method and a device for encrypting an encoded scalable enhancement frame sent by an emitter to a receiver, the enhancement frame comprising a plurality of complementary streams ordered in term of quality level, each complementary stream corresponding to a combination of more than one scalability type, where a complementary stream of a lower quality level corresponds to a lower quality on each scalability type, comprising at the level of the emitter the steps of generating a key per complementary stream for encrypting said complementary stream in such a way that all scalability types can be either simultaneously or individually used, said keys being generated in such a way that only the keys of the complementary streams of quality levels lower than the quality level of a complementary stream can be obtained from the key of said complementary stream, and sending the key of a complementary stream corresponding to a required quality level to the receiver, the key permitting a receiver to generate the keys of the complementary streams of the lower quality levels only. The present invention also concerns a method and a device for decrypting a received encoded scalable enhancement frame.
摘要翻译：本发明涉及一种用于加密由发射器发送到接收机的经编码的可缩放增强帧的方法和装置，所述增强帧包括在质量级别上排序的多个互补流，每个互补流对应于多于一种可扩展性类型，其中较低质量水平的补充流对应于每种可扩展性类型的较低质量，包括在发射器的级别处产生用于加密所述互补流的每个互补流的密钥的步骤，使得所有可扩展性类型可以同时或单独使用，所述密钥以这样一种方式生成，即只能从所述互补流的密钥获得质量水平的互补流的密钥低于互补流的质量水平，以及将对应于所需质量水平的补充流的密钥发送给接收机t 他的密钥允许接收机仅产生较低质量级别的补充流的密钥。本发明还涉及一种用于解密接收的经编码的可缩放增强帧的方法和装置。

2. 发明申请

US20100128873A1 METHOD AND DEVICE FOR MANAGING A TRANSMISSION OF KEYS 有权
标题翻译：管理传播的方法和设备
公开(公告)号：US20100128873A1
公开(公告)日：2010-05-27
申请号：US12312318
申请日：2007-11-06
申请人： Mohamed Karroumi , Stephane Onno , Alain Durand
发明人： Mohamed Karroumi , Stephane Onno , Alain Durand
IPC分类号： H04L9/00
CPC分类号： H04N7/165 , H04N21/234327 , H04N21/2347 , H04N21/2662 , H04N21/4405 , H04N21/63345
摘要： The present invention concerns a method and a device for encrypting an encoded scalable enhancement frame sent by an emitter to a receiver, the enhancement frame comprising a plurality of complementary streams ordered in term of quality level, each complementary stream corresponding to a combination of more than one scalability type, where a complementary stream of a lower quality level corresponds to a lower quality on each scalability type, comprising at the level of the emitter the steps of generating a key per complementary stream for encrypting said complementary stream in such a way that all scalability types can be either simultaneously or individually used, said keys being generated in such a way that only the keys of the complementary streams of quality levels lower than the quality level of a complementary stream can be obtained from the key of said complementary stream, and sending the key of a complementary stream corresponding to a required quality level to the receiver, the key permitting a receiver to generate the keys of the complementary streams of the lower quality levels only. The present invention also concerns a method and a device for decrypting a received encoded scalable enhancement frame.
摘要翻译：本发明涉及一种用于加密由发射器发送到接收机的经编码的可缩放增强帧的方法和装置，所述增强帧包括在质量级别上排序的多个互补流，每个互补流对应于多于一种可扩展性类型，其中较低质量水平的补充流对应于每种可扩展性类型的较低质量，包括在发射器的级别处产生用于加密所述互补流的每个互补流的密钥的步骤，使得所有可扩展性类型可以同时或单独使用，所述密钥以这样一种方式生成，即只能从所述互补流的密钥获得质量水平的互补流的密钥低于互补流的质量水平，以及将对应于所需质量水平的补充流的密钥发送给接收机t 他的密钥允许接收机仅产生较低质量级别的补充流的密钥。本发明还涉及一种用于解密接收的经编码的可缩放增强帧的方法和装置。

3. 发明授权

US09252957B2 Method for preventing laundering and repackaging of multimedia content in content distribution systems 有权
标题翻译：内容分发系统中防止多媒体内容的洗涤和重新包装的方法
公开(公告)号：US09252957B2
公开(公告)日：2016-02-02
申请号：US12736262
申请日：2009-04-07
申请人： Alain Durand , Marc Joye , Mohamed Karroumi , Yan-Mei Tang Talpin
发明人： Alain Durand , Marc Joye , Mohamed Karroumi , Yan-Mei Tang Talpin
IPC分类号： G06F11/30 , H04L9/32 , H04L9/08
CPC分类号： H04L9/3247 , H04L9/0836 , H04L2209/60
摘要： A method for distributing content in a content distribution system is disclosed which comprises the steps of: encrypting at a Content Packager a content using a content encryption key to generate an encrypted content; sending the content encryption key to a Licensing Authority; receiving from the Licensing Authority a distribution key containing an encryption of the content decryption key (Kc) for a given set of authorized devices; creating a secure link between the content encryption key (Kc) and the content protected by this content encryption key using a signature of the content; and distributing the encrypted content together with the signature of the content. A method for receiving content distributed according to the above-mentioned method in a device able to play back the content is also disclosed where the content signature is checked before any play back of the content.
摘要翻译：公开了一种在内容分发系统中分发内容的方法，包括以下步骤：使用内容加密密钥在内容打包机处加密内容以生成加密的内容; 将内容加密密钥发送给授权机构; 从授权机构接收包含对于给定的授权设备集合的内容解密密钥（Kc）的加密的分发密钥; 使用内容的签名在内容加密密钥（Kc）和由该内容加密密钥保护的内容之间建立安全链接; 并且将加密的内容与内容的签名一起分发。还公开了一种在能够回放内容的设备中接收根据上述方法分发的内容的方法，其中在内容的任何回放之前检查内容签名。

4. 发明申请

US20110016311A1 METHOD FOR PREVENTING LAUNDERING AND REPACKAGING OF MULTIMEDIA CONTENT IN CONTENT DISTRIBUTION SYSTEMS 有权
标题翻译：内容分发系统中多媒体内容的清除和重新包装的方法
公开(公告)号：US20110016311A1
公开(公告)日：2011-01-20
申请号：US12736262
申请日：2009-04-07
申请人： Alain Durand , Marc Joye , Mohamed Karroumi , Yan-Mei Tang Talpin
发明人： Alain Durand , Marc Joye , Mohamed Karroumi , Yan-Mei Tang Talpin
IPC分类号： H04L9/08
CPC分类号： H04L9/3247 , H04L9/0836 , H04L2209/60
摘要： A method for distributing content in a content distribution system is disclosed which comprises the steps of: encrypting at a Content Packager a content using a content encryption key to generate an encrypted content; sending the content encryption key to a Licensing Authority; receiving from the Licensing Authority a distribution key containing an encryption of the content decryption key (Kc) for a given set of authorized devices; creating a secure link between the content encryption key (Kc) and the content protected by this content encryption key using a signature of the content; and distributing the encrypted content together with the signature of the content. A method for receiving content distributed according to the above-mentioned method in a device able to play back the content is also disclosed where the content signature is checked before any play back of the content.
摘要翻译：公开了一种在内容分发系统中分发内容的方法，包括以下步骤：使用内容加密密钥在内容打包机处加密内容以生成加密的内容; 将内容加密密钥发送给授权机构; 从授权机构接收包含对于给定的授权设备集合的内容解密密钥（Kc）的加密的分发密钥; 使用内容的签名在内容加密密钥（Kc）和由该内容加密密钥保护的内容之间建立安全链接; 并且将加密的内容与内容的签名一起分发。还公开了一种在能够回放内容的设备中接收根据上述方法分发的内容的方法，其中在内容的任何回放之前检查内容签名。

5. 发明申请

US20090217037A1 Method and Devices for Secure Measurements of Time-Based Distance Between Two Devices 审中-公开
标题翻译：两种设备之间基于时间距离的安全测量方法和设备
公开(公告)号：US20090217037A1
公开(公告)日：2009-08-27
申请号：US11922441
申请日：2006-06-02
申请人： Olivier Courtay , Mohamed Karroumi , Alain Durand
发明人： Olivier Courtay , Mohamed Karroumi , Alain Durand
IPC分类号： H04L9/32 , H04L29/06
CPC分类号： H04L69/16 , H04L9/3263 , H04L9/3271 , H04L63/0869 , H04L63/126
摘要： In order to provide a secure measurement of Round Trip Time (RTT), the calculation of RTT and the authentication data are separated. A device A sends a message to device B to start the method. Both devices generate a random number and device A waits for device B to finish. Device A sends its random number to B, which answers with its own random number, and device A calculates the RTT. If the RTT is below a certain limit, device A then requires authentication data, which is calculated by device B and sent to device A that verifies the authentication data. The RTT can thus be securely calculated regardless of the calculating resources of device B. Alternate embodiments, a system and devices are also provided.
摘要翻译：为了提供往返时间（RTT）的安全测量，RTT和验证数据的计算被分离。设备A向设备B发送消息以启动该方法。两个设备都产生一个随机数，设备A等待设备B完成。设备A将其随机数发送到B，其中以自己的随机数进行回答，设备A计算RTT。如果RTT低于一定限度，则设备A需要由设备B计算并发送到验证认证数据的设备A的认证数据。因此可以安全地计算RTT，而不管设备B的计算资源如何。也可以提供替代实施例，系统和设备。

6. 发明申请

US20080263198A1 Device and method using non-cycle accurate measurements for discovering emulated clients 有权
标题翻译：使用非周期精确测量发现仿真客户端的设备和方法
公开(公告)号：US20080263198A1
公开(公告)日：2008-10-23
申请号：US11809480
申请日：2007-06-01
申请人： Olivier Heen , Eric Diehl , Alain Durand , Mohamed Karroumi , Nicolas Prigent
发明人： Olivier Heen , Eric Diehl , Alain Durand , Mohamed Karroumi , Nicolas Prigent
IPC分类号： G06F15/16 , H04L9/06
CPC分类号： H04L63/0869 , G06F12/1408 , G06F21/445 , G06F21/57 , G06F21/71 , G06F21/725 , G06F2221/2129 , G06F2221/2137
摘要： A method for discovering emulated clients. A verifier sends a cryptographic challenge C to a client and preferably starts a timer. The client uses a deterministic key search algorithm to find the correct key and returns the result as a number of tries needed. The verifier then stops the timer if this was started and verifies that the result is correct and preferably that the response was timely. Also provided is a verifier.
摘要翻译：发现仿真客户端的方法。验证者向客户端发送加密质询C，最好启动定时器。客户端使用确定性密钥搜索算法找到正确的密钥，并将结果作为所需的尝试次数返回。验证者然后停止计时器，如果这是启动，并验证结果是正确的，最好是响应是及时的。还提供了验证者。

7. 发明授权

US09137248B2 Device and method using non-cycle accurate measurements for discovering emulated clients 有权
标题翻译：使用非周期精确测量发现仿真客户端的设备和方法
公开(公告)号：US09137248B2
公开(公告)日：2015-09-15
申请号：US11809480
申请日：2007-06-01
申请人： Olivier Heen , Eric Diehl , Alain Durand , Mohamed Karroumi , Nicolas Prigent
发明人： Olivier Heen , Eric Diehl , Alain Durand , Mohamed Karroumi , Nicolas Prigent
IPC分类号： G06F15/173 , H04L29/06 , G06F21/44 , G06F21/71 , G06F12/14 , G06F21/72 , G06F21/57
CPC分类号： H04L63/0869 , G06F12/1408 , G06F21/445 , G06F21/57 , G06F21/71 , G06F21/725 , G06F2221/2129 , G06F2221/2137
摘要： A method for discovering emulated clients. A verifier sends a cryptographic challenge C to a client and preferably starts a timer. The client uses a deterministic key search algorithm to find the correct key and returns the result as a number of tries needed. The verifier then stops the timer if this was started and verifies that the result is correct and preferably that the response was timely. Also provided is a verifier.
摘要翻译：发现仿真客户端的方法。验证者向客户端发送加密质询C，最好启动定时器。客户端使用确定性密钥搜索算法找到正确的密钥，并将结果作为所需的尝试次数返回。验证者然后停止计时器，如果这是启动，并验证结果是正确的，最好是响应是及时的。还提供了验证者。

8. 发明申请

US20120321075A1 FAULT-RESISTANT EXPONENTIATIONI ALGORITHM 有权
标题翻译：阻抗指数算法
公开(公告)号：US20120321075A1
公开(公告)日：2012-12-20
申请号：US13487457
申请日：2012-06-04
申请人： Marc Joye , Mohamed Karroumi
发明人： Marc Joye , Mohamed Karroumi
IPC分类号： H04L9/28
CPC分类号： G06F7/723 , G06F2207/7261 , G06F2207/7271 , H04L9/003 , H04L9/004 , H04L9/302 , H04L2209/122
摘要： A method for performing a m-ary right-to-left exponentiation using a base x, a secret exponent d and a modulus N, wherein m is a power of 2. A device having a processor and m+1 registers R[0]-R[m] in at least one memory: initializes register R[0] to h for a chosen value h, wherein the order of the value h is a divisor of m*(m−1)/2, register R[m] to x(m−1) and the registers other than R[0] and R[m] to the value h; updates register R[r] to R[r] times x, wherein r is the remainder of a division of d by (m−1) mod N; obtains a working exponent q that is the quotient of the division of d by (m−1); performs l iterations, starting at i=0, of: setting R[qi] to R[qi] times R[m] and raising R[m] to the power of m, where l is the length of q in base m and qi is the i-th digit of the representation of q in base m and ql−1 is non-zero; verifies the correctness of the result by checking that R[m] equals the product of registers R[0]-R[m−1] to the power of m−1; and outputs the product of R[l]j, where 1≦j≦m−1, only if the correctness is successfully verified.
摘要翻译：一种用于使用基数x，秘密指数d和模数N执行从右到左取幂的方法，其中m是2的幂。具有处理器并且m + 1寄存器R [0] 在至少一个存储器中的-R [m]：将寄存器R [0]初始化为h以选择值h，其中值h的顺序是m *（m-1）/ 2的除数，寄存器R [m ]到x（m-1）以及除R [0]和R [m]之外的寄存器到值h; 将寄存器R [r]更新为R [r]乘以x，其中r是d除以（m-1）mod N的余数的剩余部分; 得到一个工作指数q，即d（m-1）的除法的商; 从i = 0开始执行l次迭代，将R [qi]设置为R [qi]次R [m]，并将R [m]提高到m的幂，其中l是基本m中q的长度， qi是基数m中q的表示的第i位数，ql-1是非零; 通过检查R [m]等于寄存器R [0] -R [m-1]的乘积与m-1的幂来验证结果的正确性; 并且仅当正确性被成功验证时才输出R [1] j的乘积，其中1＆nlE; j＆nlE; m-1。

9. 发明申请

US20130091583A1 METHOD AND DEVICE FOR SECURED ENTRY OF PERSONAL DATA 有权
标题翻译：用于安全进入个人数据的方法和装置
公开(公告)号：US20130091583A1
公开(公告)日：2013-04-11
申请号：US13704377
申请日：2011-06-15
申请人： Mohamed Karroumi , Eric Diehl
发明人： Mohamed Karroumi , Eric Diehl
IPC分类号： G06F21/60
CPC分类号： G06F21/604 , G06F3/0236 , G06F3/04886 , G06F21/83 , G07F7/1041
摘要： A method for secured entry of personal data is disclosed. This method comprises for each item of personal data a first step of presentation of a virtual keyboard comprising keys and a first cursor, followed by a step of selection of a key corresponding to the item of personal data wherein the virtual keyboard also comprises at least one dummy cursor and wherein the position on the virtual keyboard of the at least one dummy cursor depends on the position of the first cursor. A device for secured entry of personal data configured to implement the method is further disclosed.
摘要翻译：公开了一种有担保输入个人资料的方法。该方法包括对于个人数据的每个项目，呈现包括密钥和第一光标的虚拟键盘的第一步骤，随后是选择对应于个人数据项的步骤的步骤，其中虚拟键盘还包括至少一个虚拟光标，并且其中所述至少一个虚拟光标的虚拟键盘上的位置取决于第一光标的位置。还公开了一种用于实现该方法的用于安全输入个人数据的设备。

10. 发明申请

US20120207300A1 Method and Device for Generating Control Words 审中-公开
标题翻译：用于生成控制字的方法和装置
公开(公告)号：US20120207300A1
公开(公告)日：2012-08-16
申请号：US13356537
申请日：2012-01-23
申请人： Mohamed Karroumi
发明人： Mohamed Karroumi
IPC分类号： H04L9/00
CPC分类号： H04L9/3236 , H04L9/0836 , H04L2209/603
摘要： The present invention relates to the generation of n control words for encryption of a content item. A device obtains a first key Kstart and a second key Kend; generates the n control words using the formula:CWi=h1 i(Kstart) ⊕h2 n-i(KEnd), i=0 . . . n−1, wherein CWi denotes 5 control word i, h1 and h2 denote one-way functions, and ⊕ denotes a combination operation; and outputs the n generated control words. The least one one-way function is preferably a hash function and the combination operation is preferably XOR.
摘要翻译：本发明涉及生成用于内容项的加密的n个控制字。设备获得第一密钥Kstart和第二密钥Kend; 使用以下公式生成n个控制字：CWi = h1 i（Kstart）⊕h2n-i（KEnd），i = 0。。。 n-1，其中CWi表示5个控制字i，h1和h2表示单向函数，⊕表示组合操作; 并输出n个生成的控制字。最少一个单向函数优选地是散列函数，并且组合操作优选为XOR。

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