公开(公告)号：US06279110B1

公开(公告)日：2001-08-21

申请号：US08966702

申请日：1997-11-10

申请人： Donald B. Johnson ,  Scott A. Vanstone ,  Minghua Qu

发明人： Donald B. Johnson ,  Scott A. Vanstone ,  Minghua Qu

IPC分类号： H04L930

CPC分类号： H04L9/3247 ,  G06Q20/341 ,  G06Q20/40975 ,  G07F7/1008 ,  H04L9/3066 ,  H04L9/3252 ,  H04L2209/04

摘要： The present invention relates to digital signature operations using public key schemes in a secure communications system and in particular for use with processors having limited computing power such as ‘smart cards’. This invention describes a method for creating and authenticating a digital signature comprising the steps of selecting a first session parameter k and generating a first short term public key derived from the session parameter k, computing a first signature component r derived from a first mathematical function using the short term public key, selecting a second session parameter t and computing a second signature component s derived from a second mathematical function using the second session parameter t and without using an inverse operation, computing a third signature component using the first and second session parameters and sending the signature components (s, r, c) as a masked digital signature to a receiver computer system. In the receiver computer system computing a recovered second signature component s′ by combining a third signature component with the second signature component to derive signature components (s′, r) as an unmasked digital signature. Verifying these signature components as in a usual ElGamal or ECDSA type signature verification.

摘要翻译： 本发明涉及在安全通信系统中使用公共密钥方案的数字签名操作，特别是与具有有限计算能力的处理器（例如“智能卡”一起使用）一起使用本发明描述了一种用于创建和认证数字签名的方法，包括步骤 选择第一会话参数k并生成从会话参数k导出的第一短期公钥，使用短期公钥计算从第一数学函数导出的第一签名组件r，选择第二会话参数t并计算 使用第二会话参数t从第二数学函数导出并且不使用反向操作的第二签名组件s，使用第一和第二会话参数来计算第三签名组件，并将签名组件（s，r，c）发送为蒙版 接收机计算机系统的数字签名 通过将第三签名组件与第二签名组件组合来导出恢复的第二签名组件s'，以将签名组件（s'，r）导出为未被屏蔽的数字签名。 验证这些签名组件，如通常的ElGamal或ECDSA类型签名验证。

公开(公告)号：US5971160A

公开(公告)日：1999-10-26

申请号：US97222

申请日：1998-06-12

申请人： Antoine G. Abdulmassih ,  Donald B. Johnson ,  Douglas L. G. Young ,  Brian J. Gallagher

发明人： Antoine G. Abdulmassih ,  Donald B. Johnson ,  Douglas L. G. Young ,  Brian J. Gallagher

IPC分类号： B01D29/11 ,  B01D29/19 ,  B01D29/25 ,  D21D5/02 ,  D21D5/16 ,  B07B1/49

CPC分类号： D21D5/16

摘要： A support structure for thin screenplates utilized for fine screens in Fibresaving applications for pulp fiber suspensions or the like wherein a support structure having a screen support in minimum screen contact positioned by a support reinforcement and positioning device, assembled to form an integral structure which reduces the stresses and deflections in the thin screenplates occurring in operation.

摘要翻译： 用于薄纸板的支撑结构用于纸浆纤维悬浮液等的纤维布应用中的精细筛网，其中具有通过支撑加强件和定位装置定位的最小屏幕接触中的筛网支撑的支撑结构，以形成整体结构， 在操作中发生薄板的应力和偏转。

公开(公告)号：US5623402A

公开(公告)日：1997-04-22

申请号：US194725

申请日：1994-02-10

申请人： Donald B. Johnson

发明人： Donald B. Johnson

IPC分类号： G05B13/04 ,  G05B13/02 ,  G06F17/10

CPC分类号： G05B13/04

摘要： A method and apparatus for multi-channel control of a multiple input, multiple output, servo-driven plant utilizes finite impulse response (FIR) filters to model the inverse of the plant. Each channel includes a servo FIR filter that generates a servo command to drive the plant's servo controller, a valve current FIR filter that bypasses the PID stage of the servo controller to avoid undesirable effects of the PID loop, and a cross FIR filter for each of the remaining channels that compensates for physical coupling in the plant between the channels. The servo FIR filter is calculated by an adaption routine that involves applying an identification signal to the plant, applying the plant's response to the filter and then updating the filter's coefficients using the error that exists between the identification signal and the filter output. To reduce the convergence time, the identification signal is separated into parts in accordance with the amplitude spectral response of the plant and the parts are applied sequentially. The valve current and cross FIR filters are calculated using a forward drive adaption routine in which the identification signal is applied to the filter and the filter output to the plant. The forward drive adaption routine utilizes the phase response of the plant which is provided by way of another FIR filter that includes the inverse a plitude frequency response of the plant. Non-linear error correction is provided via an error store that provides an error correction that is added to the desired command.

摘要翻译： 用于多输入多输出伺服驱动设备的多通道控制的方法和装置利用有限脉冲响应（FIR）滤波器对工厂的倒数进行建模。 每个通道包括伺服FIR滤波器，其产生用于驱动设备的伺服控制器的伺服命令，绕过伺服控制器的PID级的阀电流FIR滤波器，以避免PID回路的不期望的影响，以及用于每个 补偿通道之间工厂物理耦合的剩余通道。 伺服FIR滤波器通过适应程序计算，该适应程序涉及向工厂应用识别信号，将设备的响应应用于滤波器，然后使用存在于识别信号和滤波器输出之间的误差来更新滤波器的系数。 为了减少收敛时间，识别信号根据植物的振幅光谱响应被分成部分，并且顺序地应用部分。 使用正向驱动器适配程序来计算阀电流和交叉FIR滤波器，其中识别信号被施加到滤波器并且滤波器输出到工厂。 正向驱动器适配程序利用了通过另一个FIR滤波器提供的设备的相位响应，该FIR滤波器包括逆变电站的大小频率响应。 通过错误存储器提供非线性纠错，该错误存储器提供添加到所需命令的错误校正。

公开(公告)号：US5143220A

公开(公告)日：1992-09-01

申请号：US610696

申请日：1990-11-08

申请人： Douglas L. G. Young ,  Donald B. Johnson

发明人： Douglas L. G. Young ,  Donald B. Johnson

IPC分类号： B03B5/00 ,  B07B1/24 ,  D21D5/02 ,  D21D5/06

CPC分类号： D21D5/026 ,  D21D5/06

摘要： A screening apparatus removes a fluid borne pulp fiber slurry from knots which have been concentrated from a pulp processing stream. A rotating radially symmetrical screen provides centrifugal screening to accept a pulp fiber slurry while an integrally connected spiral flight conveyor transports knots from the inner surface of the screen to a knot discharge chamber located axially above the screening chamber. Above the screening chamber but below the liquid level in the housing, a fiber free wash liquor is provided through a tangentially oriented nozzle in the direction of rotation of the spiral flight conveyor to release fibers from the knot surfaces thereby enabling them to pass through the screen. The screening apparatus also provides for removal of heavy tramp materials, for maintaining liquid level control, for minimizing air entrainment and foam formation, and for preventing clogging of the screen apertures and knot discharge outlet.

公开(公告)号：US4918728A

公开(公告)日：1990-04-17

申请号：US401486

申请日：1989-08-30

申请人： Stephen M. Matyas ,  Dennis G. Abraham ,  Donald B. Johnson ,  Ramesh K. Karne ,  An V. Le ,  Rostislaw Prymak ,  Julian Thomas ,  John D. Wilkins ,  Phil C. Yeh

发明人： Stephen M. Matyas ,  Dennis G. Abraham ,  Donald B. Johnson ,  Ramesh K. Karne ,  An V. Le ,  Rostislaw Prymak ,  Julian Thomas ,  John D. Wilkins ,  Phil C. Yeh

IPC分类号： G06F9/30 ,  H04L9/08

CPC分类号： G06F9/3885 ,  G06F9/30007 ,  G06F9/30018 ,  G06F9/3004 ,  G06F9/3895 ,  H04L9/0827 ,  H04L9/088 ,  H04L2209/12 ,  H04L2209/20 ,  H04L2209/38 ,  H04L2209/56

摘要： Data cryptography is achieved in an improved manner by associating with the data cryptography key, a control vector which provides the authorization for the uses of the key intended by the originator of the key. Among the uses specified by the control vector are limitations on encryption, decryption, authentication code generation and verification, translation of the user's data. Complex combinations of data manipulation functions are possible using the control vectors, in accordance with the invention. The system administrator can exercise flexibility in changing the implementation of his security policy by selecting appropriate control vectors in accordance with the invention. Complex scenarios such as encrypted mail box, session protection, file protection, ciphertext translation center, peer-to-peer ciphertext translation, message authentication, message authentication with non-repudiation and many others can be easily implemented by a system designer using the control vectors, in accordance with the invention.

摘要翻译： 通过与数据密码密钥相关联的控制向量来提供数据加密，该控制向量为密钥的发起者使用的密钥的使用提供授权。 控制向量指定的用途是对加密，解密，认证码生成和验证，用户数据的翻译的限制。 根据本发明，使用控制向量可以实现数据操作功能的复杂组合。 系统管理员可以通过根据本发明选择适当的控制向量来灵活地改变其安全策略的实现。 复杂场景如加密邮箱，会话保护，文件保护，密文翻译中心，点对点密文翻译，消息认证，具有不可否认性的消息认证等等可以很容易地由系统设计者使用控制向量 ，根据本发明。

公开(公告)号：US4770604A

公开(公告)日：1988-09-13

申请号：US915175

申请日：1986-10-06

申请人： Oscar Luthi ,  Donald B. Johnson

发明人： Oscar Luthi ,  Donald B. Johnson

IPC分类号： F04D7/04 ,  F04D9/00 ,  F04D29/22 ,  F04D1/06 ,  F04D7/00

CPC分类号： F04D7/04 ,  F04D29/2216

摘要： A pulp feeder feeds the pulp from the pulp feeder housing to the pump impeller. The impeller is provided with vanes specially constructed to provide channels of sufficient dimension to permit the flow of the pulp through the channels. The impeller also has helical flights for feeding the pulp to the channels. The end of the pulp feeder is spaced close enough to the impeller to feed the pulp to the impeller flights but far enough away from the impeller to not interfere with the removal of air. An air removal pipe may also be included in the pulp feeder housing.

摘要翻译： 纸浆进料器将纸浆从纸浆供给器供给到泵叶轮。 叶轮设有特别构造以提供足够尺寸的通道以允许纸浆流过通道的叶片。 叶轮还具有用于将纸浆输送到通道的螺旋形叶片。 纸浆进料器的端部与叶轮间隔得足够近，以将纸浆送入叶轮叶片，但足够远离叶轮而不干扰空气的去除。 排纸管也可以包括在纸浆供给器壳体中。

公开(公告)号：USRE44670E1

公开(公告)日：2013-12-24

申请号：US13615389

申请日：2012-09-13

申请人： Donald B. Johnson ,  Scott A. Vanstone

发明人： Donald B. Johnson ,  Scott A. Vanstone

IPC分类号： G06F21/24 ,  H04L9/14

CPC分类号： H04L9/3242 ,  H04L9/3249

摘要： A method for communicating information between at least a pair of correspondents, the method comprising the steps of each of the correspondents selecting a plurality of cryptographic algorithms known to each of the correspondents. One of the correspondents applies the algorithms in a predetermined manner to a message for producing a set of processed information. The set of processed information is transmitted to the other correspondent. The other correspondent applies complimentary operations of the cryptographic schemes in accordance with the predetermined manner for deriving information related to the message from the processed information.

摘要翻译： 一种用于在至少一对记者之间传送信息的方法，所述方法包括以下步骤：每个通信对象选择每个记者已知的多个密码算法。 记者之一以预定的方式将算法应用于产生一组处理信息的消息。 处理后的信息集传送给其他记者。 其他记者根据预定的方式对加密方案进行补充操作，以从处理的信息中导出与消息有关的信息。

公开(公告)号：US20130019099A1

公开(公告)日：2013-01-17

申请号：US13620758

申请日：2012-09-15

申请人： Scott A. Vanstone ,  Alfred John Menezes ,  Minghua Qu ,  Donald B. Johnson

发明人： Scott A. Vanstone ,  Alfred John Menezes ,  Minghua Qu ,  Donald B. Johnson

IPC分类号： H04L9/08

CPC分类号： H04L9/0844 ,  G06F7/725 ,  H04L9/0841 ,  H04L9/3066 ,  H04L9/3252

摘要： A method of determining the integrity of a message exchanged between a pair of correspondents. The message is secured by embodying the message in a function of a public key derived from a private key selected by one of the correspondents. The method comprises first obtaining the public key. The public key is then subjected to at least one mathematical test to determine whether the public key satisfies predefined mathematical characteristics. Messages utilizing the public key are accepted if the public key satisfies the predefined mathematical characteristics.

摘要翻译： 一种确定在一对记者之间交换的消息的完整性的方法。 通过将消息体现在由其中一个记者选择的私钥派生的公共密钥的功能中来保护消息。 该方法包括首先获得公钥。 然后对公钥进行至少一个数学测试，以确定公钥是否满足预定义的数学特性。 如果公钥满足预定义的数学特征，则接受使用公钥的消息。

公开(公告)号：US08233617B2

公开(公告)日：2012-07-31

申请号：US12840008

申请日：2010-07-20

申请人： Donald B. Johnson ,  Scott Alexander Vanstone

发明人： Donald B. Johnson ,  Scott Alexander Vanstone

IPC分类号： H04L9/14 ,  G06F21/24

CPC分类号： H04L9/3242 ,  H04L9/3249

摘要： A system and method are provided for enabling a symmetric key to be derived, the method comprising: obtaining a plurality of key parts, wherein the plurality of key parts when combined equal the symmetric key; encrypting a first of the key parts using a first cryptographic algorithm to generate a first encrypted value; encrypting one or more remaining key parts of the plurality of key parts using respective cryptographic algorithms to generate one or more additional encrypted values, wherein each key part encrypted is encrypted using a different cryptographic algorithm; and providing the first encrypted value and the one or more additional encrypted values to an other entity to enable the other entity to derive the symmetric key.

摘要翻译： 提供了一种用于使得能够导出对称密钥的系统和方法，所述方法包括：获得多个密钥部分，其中所述多个密钥部分在组合时等于所述对称密钥; 使用第一密码算法加密第一密钥部分以生成第一加密值; 使用相应的密码算法加密所述多个密钥部分中的一个或多个剩余的关键部分以生成一个或多个附加的加密值，其中使用不同的加密算法加密加密的每个密钥部分; 以及将第一加密值和所述一个或多个附加加密值提供给另一实体以使所述另一实体能够导出所述对称密钥。

公开(公告)号：US08116451B2

公开(公告)日：2012-02-14

申请号：US11705020

申请日：2007-02-12

申请人： Donald B. Johnson

发明人： Donald B. Johnson

IPC分类号： H04L9/30

CPC分类号： H04L9/30 ,  H04L9/0816 ,  H04L9/3066 ,  H04L9/3252 ,  H04L9/3263 ,  H04L2209/24

摘要： A system and method for validating digital information transmitted by one correspondent to another in a data communication system. The method comprising the steps of generating a public key in accordance with a predetermined, generating a public key in accordance with a predetermined cryptographic scheme having predetermined arithmetic properties and system parameters. The verifying said public key conforms to said arithmetic properties of said scheme, transmitting said verified public key to a recipient.

摘要翻译： 一种用于在数据通信系统中验证由一个通信对方发送的数字信息的系统和方法。 该方法包括以下步骤：根据预定的生成公钥，根据具有预定的算术特性和系统参数的预定的密码方式生成公开密钥。 验证所述公钥符合所述方案的所述算术特性，将所述经验证的公开密钥发送给接收方。