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1. 发明申请

US20060179407A1 Trusted display device for visual cryptography 审中-公开
标题翻译：用于视觉加密的可信显示设备
公开(公告)号：US20060179407A1
公开(公告)日：2006-08-10
申请号：US10549369
申请日：2004-03-15
申请人： Pim Tuyls , Mark Johnson , Thomas Kevenaar , Geert Schrijen
发明人： Pim Tuyls , Mark Johnson , Thomas Kevenaar , Geert Schrijen
IPC分类号： G06F3/00
CPC分类号： G09C5/00 , G09G2300/023
摘要： A trusted display device (1) for, upon being superimposed on an untrusted display (2), reconstructing a graphical message, said device comprising a display screen (1a) having a plurality of independently addressable pixels. A plurality of sensors (1c) are associated with at least a subset of the pixels of said display screen (1a) and arranged such that they, when the displays (1, 2) are superimposed, are able to detect optically encoded information presented by an underlying pixel of the untrusted display (2) and adapt the activation of its pixels based on said information sensed.
摘要翻译：一种信任的显示设备（1），用于在叠加在不可信的显示器（2）上时，重建图形消息，所述设备包括具有多个可独立寻址的像素的显示屏幕（1a）。多个传感器（1c）与所述显示屏（1a）的像素的至少一个子集相关联并且被布置成使得它们在显示器（1,2）叠加时能够检测光学编码信息由不可信显示器（2）的底层像素呈现，并且基于所感测的信息调整其像素的激活。

2. 发明申请

US20060177060A1 Image alignment 审中-公开
标题翻译：图像对齐
公开(公告)号：US20060177060A1
公开(公告)日：2006-08-10
申请号：US10565666
申请日：2004-07-12
申请人： Mark Johnson , Pim Tuyls , Thomas Kevenaar , Geert Schrijen
发明人： Mark Johnson , Pim Tuyls , Thomas Kevenaar , Geert Schrijen
IPC分类号： H04K1/00
CPC分类号： G09C5/00 , H04N1/3876 , H04N1/44 , H04N1/448 , H04N1/4493
摘要： An image decryption device (1) comprises a screen (10) on which a decrypted image may be visible. The decrypted image may the combination of two partial images, an encrypted image (A) displayed by a display device (2) and a key image or decrypting image (B) superimposed on the encrypted image by the decryption device. To properly align the encrypted image (A) and the key image (B), the decryption device is provided with sensors (11) capable of sensing the position of the decryption device relative to the display device. Corresponding alignment images (22) may be arranged around the screen (20 of the display device, or may be part of the encrypted image. Manual or automatic alignment may be provided.
摘要翻译：图像解密装置（1）包括其上可以看到解密的图像的屏幕（10）。解密图像可以由解密装置组合两个部分图像，由显示装置（2）显示的加密图像（A）和叠加在加密图像上的密钥图像或解密图像（B）。为了正确对准加密图像（A）和密钥图像（B），解密装置设置有能够感测解密装置相对于显示装置的位置的传感器（11）。相应的对准图像（22）可以布置在屏幕周围（20），或者可以是加密图像的一部分。可以提供手动或自动对准。

3. 发明申请

US20050117748A1 Secure visual message communication method and device 审中-公开
标题翻译：安全的视讯消息通信方式和设备
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
CPC分类号： G09C5/00 , G06F21/83 , G06F21/84
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。

4. 发明申请

US20060098841A1 Method and system for enabling remote message composition 审中-公开
标题翻译：启用远程消息组合的方法和系统
公开(公告)号：US20060098841A1
公开(公告)日：2006-05-11
申请号：US10548251
申请日：2004-03-01
申请人： Pim Tuyls , Thomas Kevenaar , Geert Schrijen
发明人： Pim Tuyls , Thomas Kevenaar , Geert Schrijen
IPC分类号： G06K9/00
CPC分类号： G09C1/02 , G06F21/36 , G06F2221/2107 , G09C5/00 , H04L9/3226
摘要： A method of and server (100) for enabling composition of a message at a remote terminal (101). The method comprises generating an image comprising a plurality of symbols representing input means, the symbols having an associated particular visual characteristic which is mutually different for at least two of the symbols, transmitting the image for display on the remote terminal (101), receiving a sequence of coordinates from the remote terminal (101), reconstructing the message as a sequence of input means represented by the symbols comprised in the image at the received coordinates, constructing an authentication code as a sequence of visual characteristics associated with the symbols comprised in the image at the received coordinates, and accepting the message as authentic if the authentication code matches a predetermined sequence of visual characteristics.
摘要翻译：一种用于启用在远程终端（101）处的消息组合的方法和服务器（100）。该方法包括生成包括表示输入装置的多个符号的图像，所述符号具有相关联的特定视觉特征，对于至少两个符号相互不同，发送用于在远程终端（101）上显示的图像，接收将来自远程终端（101）的坐标序列重建为由接收到的坐标处的图像中包含的符号表示的输入装置的序列，构建认证码作为与包含在所述图像中的符号相关联的视觉特征序列图像，并且如果认证码与预定的视觉特征序列匹配，则将该消息接受为真实的。

5. 发明申请

US20050265550A1 Polynomial-based multi-user key generation and authentication method and system 审中-公开
标题翻译：基于多项式的多用户密钥生成和认证方法及系统
公开(公告)号：US20050265550A1
公开(公告)日：2005-12-01
申请号：US10507190
申请日：2003-02-14
申请人： Pim Tuyls , Thomas Kevenaar , Geert Schrijen , Marten Van Dijk
发明人： Pim Tuyls , Thomas Kevenaar , Geert Schrijen , Marten Van Dijk
IPC分类号： H04L9/08 , H04L9/32 , H04L12/28 , H04L9/00
CPC分类号： H04L9/3273 , H04L9/085 , H04L9/321 , H04L9/3218 , H04L12/2805 , H04L2209/603
摘要： A method of generating a common secret between a first party and a second party, preferably devices (101-105) in a home network (100) that operate in accordance with a Digital Rights Management (DRM) framework. The devices calculate the common secret by evaluating the product of two polynomials P(x, y) and Q(x, z) using parameters previously distributed by a Trusted Third Party (TTP) and parameters obtained from the other party. Preferably the parties subsequently verify that the other party has generated the same secret using a zero-knowledge protocol or a commitment-based protocol. The method is particularly suitable for very low power devices such as Chip-In-Disc type devices.
摘要翻译：优选地，在第一方和第二方之间生成公共秘密的方法，优选地根据数字版权管理（DRM）框架操作的归属网络（100）中的设备（101-105）。这些设备通过使用先前由可信第三方（TTP）分发的参数和从对方获得的参数来评估两个多项式P（x，y）和Q（x，z）的乘积来计算公共秘密。优选地，各方随后使用零知识协议或基于承诺的协议来验证对方已经生成了相同的秘密。该方法特别适用于非常低功率的器件，例如片内盘式器件。

6. 发明申请

US20060115082A1 Authentication system with visual encryption using polarisation of light 审中-公开
标题翻译：使用光的偏振的视觉加密的认证系统
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。

7. 发明申请

US20060227969A1 Visual cryptography system 审中-公开
标题翻译：视觉加密系统
公开(公告)号：US20060227969A1
公开(公告)日：2006-10-12
申请号：US10548245
申请日：2004-03-01
申请人： Mark Johnson , Pim Tuyls , Thomas Kevenaar
发明人： Mark Johnson , Pim Tuyls , Thomas Kevenaar
IPC分类号： H04N7/167
CPC分类号： G09G5/005 , G06T1/00 , G09C5/00 , G09G3/36 , G09G5/006 , G09G5/12 , G09G2300/023
摘要： The present invention relates to a visual cryptography system. The system comprises a first and a second display device (1, 2), arranged for, upon being superimposed on each other, reconstructing a graphical message from two respective shares. At least one of said display devices (1, 2) comprise means for facilitating determination of the resolution and pixel size of the other. At least one, preferably both, of, said display devices (1, 2) is arranged to scale the resolution and pixel size of its share to a mutually supported resolution and pixel size, and preferably to a mutually supported smallest common multiple resolution and pixel size.
摘要翻译：本发明涉及视觉密码系统。该系统包括第一和第二显示设备（1,2），被布置为在彼此叠加之后重建来自两个相应股份的图形消息。所述显示设备（1,2）中的至少一个包括用于便于确定另一个的分辨率和像素大小的装置。布置所述显示设备（1,2）的至少一个，优选两个，以将其共享的分辨率和像素大小缩放到相互支持的分辨率和像素尺寸，并且优选地相互支持的最小公共多分辨率和像素尺寸。

8. 发明申请

US20070057886A1 Image decryption system 审中-公开
标题翻译：图像解密系统
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）。

9. 发明申请

US20070040256A1 Semiconductor device, method of authentifying and system 有权
标题翻译：半导体器件，认证方法和系统
公开(公告)号：US20070040256A1
公开(公告)日：2007-02-22
申请号：US10557262
申请日：2004-05-17
申请人： Pim Tuyls , Thomas Kevenaar , Petra De Jongh , Robertus Wolters
发明人： Pim Tuyls , Thomas Kevenaar , Petra De Jongh , Robertus Wolters
IPC分类号： H01L23/02
CPC分类号： H01L23/544 , H01L23/576 , H01L2223/5444 , H01L2924/0002 , H01L2924/3011 , H01L2924/00
摘要： The semiconductor device (11) of the invention comprises a circuit and a protecting structure (50). It is provided with a first and a second security element (12A, 12B) and with an input and an output (14,15). The security elements (12A, 12B) have a first and a second impedance, respectively, which impedances differ. The device is further provided with measuring means, processing means and connection means. The processing means transform any first information received into a specific program of measurement. Herewith a challenge-response mechanism is implemented in the device (11).
摘要翻译：本发明的半导体器件（11）包括电路和保护结构（50）。它设置有第一和第二安全元件（12A，12B）以及输入和输出（14,15）。安全元件（12A，12B）分别具有阻抗不同的第一和第二阻抗。该装置还设有测量装置，处理装置和连接装置。处理装置将接收到的任何第一信息转换成特定的测量程序。因此，在设备（11）中实现了挑战响应机制。

10. 发明申请

US20070226512A1 Architectures for Privacy Protection of Biometric Templates 有权
标题翻译：生物识别模板隐私保护架构
公开(公告)号：US20070226512A1
公开(公告)日：2007-09-27
申请号：US11570046
申请日：2005-06-01
申请人： Thomas Kevenaar , Antonius Akkermans , Pim Tuyls
发明人： Thomas Kevenaar , Antonius Akkermans , Pim Tuyls
IPC分类号： H04L9/32
CPC分类号： G06F21/32 , G06F21/6245 , G06F2221/2117 , G06F2221/2143 , G07C9/00087 , H04L9/3278 , H04L2209/805
摘要： The present invention relates to a system and a method of verifying the identity of an individual by employing biometric data associated with the individual (603), wherein privacy of said biometric data (X, Y) is provided. A helper data scheme (IIDS) is employed to provide privacy of the biometric data. The present invention is advantageous for number of reasons. First, processing of security sensitive information is performed in a secure, tamper-proof environment (601, 604, 606) which is trusted by the individual. This processing, combined with utilization of a helper data scheme, enables set up of a biometric system where the biometric template is available in electronic form only in the secure environment. Moreover, electronic copies of the biometric templates are not available in the ecure environment permanently, but only when the individual offers her template to the sensor.
摘要翻译：本发明涉及通过采用与个体相关联的生物特征数据（603）来验证个人身份的系统和方法，其中提供所述生物特征数据（X，Y）的隐私。使用辅助数据方案（IIDS）来提供生物特征数据的隐私。出于多个原因本发明是有利的。首先，在由个人信任的安全的防窜改环境（601,604,606）中执行安全敏感信息的处理。该处理结合利用辅助数据方案，可以建立生物识别系统，其中生物特征模板仅在安全环境中以电子形式提供。此外，生物特征模板的电子副本在永久环境中不可用，但只有当个人将模板提供给传感器时才能使用。

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