公开(公告)号：US5265164A

公开(公告)日：1993-11-23

申请号：US786237

申请日：1991-10-31

申请人： Stephen M. Matyas ,  Donald B. Johnson ,  An V. Le ,  Rostislaw Prymak ,  William C. Martin ,  William S. Rohland ,  John D. Wilkins

发明人： Stephen M. Matyas ,  Donald B. Johnson ,  An V. Le ,  Rostislaw Prymak ,  William C. Martin ,  William S. Rohland ,  John D. Wilkins

IPC分类号： G09C1/00 ,  G06F9/30 ,  H04L9/00 ,  H04L9/08 ,  H04K1/00

CPC分类号： G06F9/30003 ,  G06F9/30043 ,  H04L9/088 ,  H04L9/3247 ,  H04L9/3263

摘要： A computer apparatus, program and method function in a data processing system to replicate a cryptographic facility. The system includes a first cryptographic facility containing a portable part which personalizes the first cryptographic facility. The system also includes a second cryptographic facility which is linked to the first cryptographic facility by a public key cryptographic system. The portable part of the first cryptographic facility is encrypted and transferred to the second cryptographic facility, where it is decrypted and used to personalize the second cryptographic facility to enable replication of the first cryptographic facility. In one application, personalization of the second cryptographic facility can be in response to the detection of a failure in the first cryptographic facility. In another application, multiple cryptographic facilities can be brought on-line for parallel operation in the data processing system.

公开(公告)号：US5201000A

公开(公告)日：1993-04-06

申请号：US766533

申请日：1991-09-27

申请人： Stephen M. Matyas ,  Donald B. Johnson ,  An V. Le ,  Rostislaw Prymak ,  John D. Wilkins

发明人： Stephen M. Matyas ,  Donald B. Johnson ,  An V. Le ,  Rostislaw Prymak ,  John D. Wilkins

IPC分类号： G09C1/00 ,  G06F9/30 ,  H04L9/08 ,  H04L9/30

CPC分类号： G06F9/30003 ,  H04L9/088 ,  H04L9/302 ,  H04L2209/26

摘要： A data processing system, program and method are disclosed for managing a public key cryptographic system which includes a public key, private key pair generator. The method includes the step of generating a first public key, private key pair using a first seed value known to a user, the first seed value being generated from a passphrase. A first random number is generated using the first seed value and applied to generating the first key pair. The method then generates a first control vector defining a first use of the first public key, private key pair.The method then continues with the step of generating a second public key, private key pair using a second seed value unknown to the user, the second seed value being a true random number. The second random number is generated using the second seed value in a pseudorandom number generator and applied to generating the second key pair. The method generates a second control vector defining a second use of the second public key, private key pair.The method then controls the use of the first public key, private key pair using the first control vector and controls the use of the second public key, private key pair with the second control vector.

公开(公告)号：US5177791A

公开(公告)日：1993-01-05

申请号：US753245

申请日：1991-08-30

申请人： Phil C. Yeh ,  Dennis G. Abraham ,  Donald B. Johnson ,  An Van Le ,  Stephen M. Matyas ,  Rotislaw Prymak ,  Ronald M. Smith, Sr. ,  John D. Wilkins

发明人： Phil C. Yeh ,  Dennis G. Abraham ,  Donald B. Johnson ,  An Van Le ,  Stephen M. Matyas ,  Rotislaw Prymak ,  Ronald M. Smith, Sr. ,  John D. Wilkins

IPC分类号： H04L9/08

CPC分类号： H04L9/088 ,  H04L2209/08

摘要： A working key of a certain key type is to be transmitted from a first system (having a first usage-control value associated with keys of the certain type) and a second system (having a second usage-control value associated with keys of the certain type). A translation control value, associated with the certain key type, is generated, functionally relating the first and second usage-control values. The translation control value is used in a cryptographic function to send or receive the working key between systems, the cryptographic function being designed to produce valid results when the correct translation control value, and usage-control values, are employed, and unpredictable results otherwise. Effectively, the first usage-control value is translated to the second usage-control value.

摘要翻译： 要从第一系统（具有与特定类型的密钥相关联的第一使用控制值）和第二系统（具有与特定密钥的密钥相关联的第二使用控制值）发送某个密钥类型的工作密钥 类型）。 产生与特定键类型相关联的翻译控制值，功能上与第一和第二使用控制值相关。 翻译控制值用于加密功能中以在系统之间发送或接收工作密钥，加密功能被设计为当采用正确的翻译控制值和使用控制值时产生有效结果，否则将产生不可预测的结果。 有效地，将第一使用控制值转换为第二使用控制值。

公开(公告)号：US5142578A

公开(公告)日：1992-08-25

申请号：US748407

申请日：1991-08-22

申请人： Stephen M. Matyas ,  Donald B. Johnson ,  An V. Le ,  Rostislaw Prymak ,  John D. Wilkins ,  William C. Martin ,  William S. Rohland

发明人： Stephen M. Matyas ,  Donald B. Johnson ,  An V. Le ,  Rostislaw Prymak ,  John D. Wilkins ,  William C. Martin ,  William S. Rohland

IPC分类号： G06F21/20 ,  G06F9/30 ,  G09C1/00 ,  H04L9/08

CPC分类号： G06F9/30003 ,  H04L9/088 ,  H04L9/0894 ,  H04L9/14

摘要： The patent describes a method and apparatus for securely distributing an initial Data Encryption Algorithm (DEA) key-encrypting key by encrypting a key record (consisting of the key-encrypting key and control information associated with that key-encrypting key) using a public key algorithm and a public key belonging to the intended recipient of the key record. The patent further describes a method and apparatus for securely recovering the distributed key-encrypting key by the recipient by decrypting the received key record using the same public key algorithm and private key associated with the public key and re-encrypting the key-encrypting key under a key formed by arithmetically combining the recipient's master key with a control vector contained in the control information of the received key record. Thus the type and usage attributes assigned by the originator of the key-encrypting key in the form of a control vector are cryptographically coupled to the key-encrypting key such that the recipient may only use the received key-encrypting key in a manner defined by the key originator.The patent further describes a method and apparatus to improve the integrity of the key distribution process by applying a digital signature to the key record and by including identifying information (i.e., an originator identifier) in the control information of the key record. The integrity of the distribution process is enhanced by verifying the digital signature and originator identifier at the recipient node.

公开(公告)号：US4115864A

公开(公告)日：1978-09-19

申请号：US791559

申请日：1977-04-27

申请人： Howard Andrew Vick ,  Donald B. Johnson

发明人： Howard Andrew Vick ,  Donald B. Johnson

IPC分类号： A61B5/0424 ,  G06F17/00 ,  G08B21/00

CPC分类号： A61B5/0424

摘要： A fail safe detector in a cardiac monitoring system provides an alarm to indicate failure of the system to respond to cardiac waveforms supplied thereto from cardiac waveform sources. A time out circuit will produce the alarm if not periodically reset by pulses produced in response to measurement of cardiac waveforms. Means are provided for sensing whether cardiac waveforms are received from the sources to provide an alternate means of triggering periodic reset signals when no waveforms are received from the sources to prevent false alarms.

摘要翻译： 心脏监测系统中的故障安全检测器提供警报以指示系统对心脏波形源提供的心脏波形的响应。 超时电路将产生报警，如果不是响应于心脏波形的测量而产生的脉冲周期性地复位。 提供了用于感测是否从源接收心脏波形的装置，以提供当不从源接收到波形以防止假警报时触发周期性复位信号的替代手段。