-
公开(公告)号：US09830481B2
公开(公告)日：2017-11-28
申请号：US11917041
申请日：2006-06-14
CPC分类号： G06K7/0008 , G06K19/0723 , G06K19/14
摘要： A transponder (1) comprises at least one memory (MEM1, MEM2) for storing encrypted information (E_k(EPC, PI)) that has been encrypted by use of a key (k) and for storing the key (k) associated with the encrypted information (E_k(EPC, PI)). The transponder (1) is adapted to send the key (k) slower response than the encrypted information (E_k(EPC, PI)) in response to queries of a reading device (2), which is preferably done by delaying the transmission of the key (k) or by limiting the response rate at which the key (k) is transmitted. In particular the invention is related to RFID systems.
-
公开(公告)号：US20070057886A1
公开(公告)日：2007-03-15
申请号：US10574449
申请日：2004-10-04
申请人： Mark Johnson , Pim Tuyls , Thomas Kevenaar
发明人： Mark Johnson , Pim Tuyls , Thomas Kevenaar
IPC分类号： G09G3/36
CPC分类号： G09C5/00
摘要： A decryption device (2) is arranged for visually decrypting an encrypted image displayed on a display device (1) emitting polarized light. The decryption device (2) comprises a polarizing element (21), a liquid crystal display (23), and a further polarizing element (22), arranged such that the polarized light received from the display device (1) and incident on the polarizing element (21) may pass through the liquid crystal display (23) and the further polarizing element (22). The polarizing element (21) comprises a switchable polarizer capable of switching between a first, polarizing state and a second, nonpolarizing state. This allows the decryption device to be used as a stand-alone device which can also be used for other applications. The display device (1) is preferably also provided with a switchable polarizer (12).
摘要翻译： 解密装置（2）被布置用于视觉解密在发射偏振光的显示装置（1）上显示的加密图像。 解密装置（2）包括偏振元件（21），液晶显示器（23）和另外的偏振元件（22），其布置成使得从显示装置（1）接收并入射到偏振光 元件（21）可以通过液晶显示器（23）和另一偏振元件（22）。 偏振元件（21）包括可在第一偏振状态和第二非极化状态之间切换的可切换偏振器。 这允许解密装置用作独立装置，其也可以用于其他应用。 显示装置（1）优选地还设置有可切换偏振器（12）。
-
公开(公告)号：US20070044139A1
公开(公告)日：2007-02-22
申请号：US10557628
申请日：2004-05-13
IPC分类号： H04L9/32
CPC分类号： G07C9/00158 , G06K9/00885 , G07C9/00087 , H04L9/3278
摘要： A system for authenticating a physical object includes an enrolment device, an authentication device, and a storage for storing authentication data. The enrolment device includes an input for receiving a property set Y of the object measured using a measurement procedure. A processor is used for creating a property set I from the measured property set Y that meet a predetermined robustness criterion. It then creating a property set A from the property set I that includes less information on the actual properties than property set Y, and finally generates a control value Vin dependence on properties of the property set A. An output is used for supplying the control value to the storage as part of the authentication data. The enrolment device operates in an analogous way.
摘要翻译： 用于认证物理对象的系统包括注册设备，认证设备和用于存储认证数据的存储器。 注册装置包括用于接收使用测量程序测量的对象的属性集合Y的输入。 处理器用于从测量属性集合Y创建满足预定鲁棒性标准的属性集合I。 然后，从属性集I创建一个属性集A，其中包含比属性集Y更少的实际属性信息，最后生成对属性集合A的属性的控制值Vin依赖。输出用于提供控制值 作为身份验证数据的一部分。 注册设备以类似的方式操作。
-
14.发明申请公开(公告)号：US20060115082A1
公开(公告)日：2006-06-01
申请号：US10538335
申请日：2003-11-17
申请人： Thomas Kevenaar , Pim Tuyls , Geert Schrijen
发明人： Thomas Kevenaar , Pim Tuyls , Geert Schrijen
IPC分类号： H04N7/167
CPC分类号： B42D25/29 , B42D25/333 , B42D2035/34 , G07D7/0047 , G07D7/0053 , G07D7/121 , G07D7/2033 , G09C5/00
摘要： An authentication system 600 includes optical authentication devices 620, 630, 640. Each optical authentication device includes an optical layer 622, 632, 642. The optical layer includes a representation of a first image visually encrypted under control of an encryption key. The encrypted first image uniquely identifies the respective authentication device. An inspection device 610 decrypts the optical layer of the optical authentication device under control of the encryption key and visualizes the first image to enable verification of the unique identification of the authentication device.
摘要翻译： 认证系统600包括光学认证设备620,630,640。每个光学认证设备包括光学层622,632,642。光学层包括在加密密钥的控制下视觉加密的第一图像的表示。 加密的第一图像唯一地标识相应的认证设备。 检查装置610在加密密钥的控制下对光学认证装置的光学层进行解密，并且可视化第一图像，以便验证认证装置的唯一标识。
-
公开(公告)号：US20060112273A1
公开(公告)日：2006-05-25
申请号：US10538449
申请日：2003-11-21
申请人： Pim Tuyls , Bruce Murray
发明人： Pim Tuyls , Bruce Murray
IPC分类号： H04L9/00
CPC分类号： H04L9/3271 , H04L9/321 , H04L9/3218 , H04L2209/80
摘要： Zero knowledge protocols, such as the Fiat-Shamir and Guillou-Quisquater protocols are implemented using only Montgomery multiplications on Montgomery representations of numbers to effect a more efficient implementation of the protocols, particularly in devices that have restricted computational resource such as smart cards and other portable electronical devices.
摘要翻译： 零知识协议，例如Fiat-Shamir和Guillou-Quisquater协议，仅使用蒙哥马利数字表示的Montgomery乘法来实现协议的更有效的实现，特别是在限制计算资源的设备（如智能卡等）中 便携式电子设备。
-
公开(公告)号：US20050117748A1
公开(公告)日：2005-06-02
申请号：US10503684
申请日：2003-01-27
申请人： Geert Schrijen , Pim Tuyls , Thomas Kevenaar , Mark Johnson
发明人： Geert Schrijen , Pim Tuyls , Thomas Kevenaar , Mark Johnson
IPC分类号： G02F1/13 , G02F1/133 , G02F1/1333 , G02F1/1335 , G06F21/83 , G06F21/84 , G09G3/20 , G09G3/36 , H04K1/00 , H04N7/167
摘要： A method of and a device (501) for reconstructing a graphical message (520) using visual cryptography. Cells (303, 304) in a first liquid crystal display (701) are activated if a bit in a message sequence represents ‘1’, and not activated if said bit represents ‘0’. Cells (303, 304) in a second liquid crystal display (511) are activated if a bit in a key sequence represents ‘0’, and not activated if said bit represents ‘1’. The first and second displays (701, 511) are then superimposed so as to visually reconstruct the graphical message (520). Preferably a portion of a polarization filter (305) in an area of the first liquid crystal display (701), and a corresponding portion of a polarization filter (302) in an area of the second liquid crystal display (511) have been omitted to allow superimposition of the first and second liquid crystal displays (701, 511) at said areas.
摘要翻译： 一种用于使用可视密码学重建图形消息（520）的方法和装置（501）。 如果消息序列中的位表示“1”，则第一液晶显示器（701）中的单元（303,304）被激活，并且如果所述位表示“0”，则不激活。 如果键序列中的位表示“0”，则第二液晶显示器（511）中的单元（303,304）被激活，如果所述位表示“1”，则不激活。 然后叠加第一和第二显示器（701,511），以便可视地重建图形消息（520）。 优选地，省略了在第一液晶显示器（701）的区域中的偏振滤光器（305）的一部分和第二液晶显示器（511）的区域中的偏振滤光器（302）的对应部分， 允许第一和第二液晶显示器（701,511）在所述区域处叠加。
-
公开(公告)号：US20070058835A1
公开(公告)日：2007-03-15
申请号：US10576313
申请日：2004-10-14
申请人： Geert Schrijen , Mark Johnson , Pim Tuyls
发明人： Geert Schrijen , Mark Johnson , Pim Tuyls
IPC分类号： G06K9/00
CPC分类号： H04N1/32101 , H04N2201/0418
摘要： A method of verifying the authenticity of an image (1) rendered on a display screen (10) involves using a graphical representation of an authentication code (2) associated with the image. The graphical representation of the authentication code is also rendered on the display screen, while optional guide marks (3) may also be displayed. Both the image (1) and the associated authentication code (2) are read using a scanner (20), preferably a handheld linear scanner. The scanner calculates an authentication code based upon the image and compares the calculated authentication code with the authentication code read from the display.
摘要翻译： 验证在显示屏幕（10）上呈现的图像（1）的真实性的方法涉及使用与图像相关联的认证码（2）的图形表示。 验证代码的图形表示也显示在显示屏上，而可选择的引导标记（3）也可以显示。 使用扫描器（20），优选地是手持式线性扫描器来读取图像（1）和相关联的认证码（2）。 扫描仪基于图像计算认证码，并将计算的认证码与从显示器读取的认证码进行比较。
-
公开(公告)号：US20070039046A1
公开(公告)日：2007-02-15
申请号：US10556520
申请日：2004-05-06
申请人： Marten Van Dijk , Pim Tuyls
发明人： Marten Van Dijk , Pim Tuyls
IPC分类号： G06F12/14
CPC分类号： G06F21/52 , G06F2221/2129 , H04L9/321 , H04L9/3278 , H04L2209/56 , H04L2209/60
摘要： A physical random function (PUF) is a function that is easy to evaluate but hard to characterize. Controlled physical random functions (CPUFs) are PUFs that can only be accessed via a security program controlled by a security algorithm that is physically bound to the PUF in an inseparable way. CPUFs enable certified execution, where a certificate is produced that proves that a specific computation was carried out on a specific processor. The invention provides an additional layer for generating a proof of execution which any third party can verify. This proof of execution is also useful to provide secure memory and secure interruptible program execution.
摘要翻译： 物理随机函数（PUF）是易于评估但难以表征的函数。 受控的物理随机函数（CPUF）是只能通过以不可分割的方式物理地绑定到PUF的安全算法控制的安全程序来访问的PUF。 CPUFs启用认证执行，其中生成证书证明在特定处理器上执行特定计算。 本发明提供了用于生成任何第三方可以验证的执行证明的附加层。 这种执行证明也有助于提供安全的内存和安全的中断程序执行。
-
公开(公告)号：US20070016528A1
公开(公告)日：2007-01-18
申请号：US10567209
申请日：2004-08-05
CPC分类号： G06Q30/02 , G06F21/6245 , H04L9/008 , H04L9/085
摘要： The invention relates to a method of processing data, the method comprising steps of enabling to (210) encrypt first data for a first source, and encrypt second data for a second source, (220) provide the encrypted first and second data to a server that is precluded from decrypting the encrypted first and second data, and from revealing identities of the first and second sources to each other, (230) perform a computation on the encrypted first and second data to obtain a similarity value between the first and second data so that the first and second data is anonymous to the second and first sources respectively, the similarity value. providing an indication of a similarity between the first and second data. The method may further comprise a step (240) of using the similarity value to obtain a recommendation of a content item for the first or second source. The first or second data may comprises a user profile or user ratings of content items. One of the applications of the method may be in collaborative filtering systems.
摘要翻译： 本发明涉及一种处理数据的方法，所述方法包括以下步骤：使得能够（210）加密第一源的第一数据，并加密第二源的第二数据，（220）将加密的第一和第二数据提供给服务器 排除了对加密的第一和第二数据进行解密，以及从第一和第二源的身份彼此揭示身份，（230）对加密的第一和第二数据执行计算，以获得第一和第二数据之间的相似性值 使得第一和第二数据分别对于第二和第一源是匿名的，相似性值。 提供第一和第二数据之间的相似性的指示。 该方法还可以包括使用相似度值来获得第一或第二源的内容项目的推荐的步骤（240）。 第一或第二数据可以包括用户简档或内容项的用户评级。 该方法的一个应用可以在协作过滤系统中。
-
公开(公告)号：US20070003114A1
公开(公告)日：2007-01-04
申请号：US10569017
申请日：2004-08-24
IPC分类号： G06K9/00
CPC分类号： G06K9/00288
摘要： The invention relates to a biometrical identification device for identifying an individual finger (1). An intra-skin image (ISI) is acquired. Said image (ISI), which is located inside the finger at a distance (D) from an inside surface (2) of the finger, comprises sweat pores (P1, P2, P3). Said sweat pores are located as isolated spots in the intra-skin image (ISI). The pore locations (CP1-CPN) are further matched with reference pore locations (RP1-RPM) of a reference intra-skin image (RI) to produce a pore matching score (PMS). The pore matching score (PMS) is compared with a predetermined pore threshold for deciding whether the pore-based identification of the finger (1) is valid or not.
摘要翻译： 本发明涉及用于识别单个手指（1）的生物识别装置。 获取皮肤内图像（ISI）。 位于手指内部距手指内表面（D）的距离（D）的所述图像（ISI）包括汗孔（P 1，P 2，P 3）。 所述汗毛孔位于皮肤内图像（ISI）中的孤立斑点。 细孔位置（CP 1 -CPN）进一步与参考皮肤内图像（RI）的参考孔位置（RP 1 -RPM）匹配以产生孔匹配分数（PMS）。 将孔匹配分数（PMS）与预定的孔阈值进行比较，以确定手指（1）的基于孔的识别是否有效。
-
-
-
-
-
-
-
-
-
搜索结果
34 条记录 (耗时 0.041 秒)
