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1. 发明授权

US4133973A Digital cryptographic system having synchronous and asynchronous capabilities 失效
标题翻译：具有同步和异步功能的数字加密系统
公开(公告)号：US4133973A
公开(公告)日：1979-01-09
申请号：US740599
申请日：1976-11-10
申请人： Kenneth M. Branscome , Barrie O. Morgan , Merlon B. Carter
发明人： Kenneth M. Branscome , Barrie O. Morgan , Merlon B. Carter
IPC分类号： H04L9/18 , H04L9/02
CPC分类号： H04L9/065 , H04L9/12 , H04L2209/08 , H04L2209/125 , H04L2209/26
摘要： The specification discloses a digital cryptographic system wherein each of the transmitting and receiving units includes a housing having a front panel. A push-button switch input array is mounted on the front panel, with each push-button switch corresponding to a different number to enable the manual inputting of code variables therethrough. A digital display is provided on the front panel to temporarily display each of the code variables input through the array. Storage circuits are provided to store the code variables input through the array. A switch is provided on the front panel to enable any one of the stored code variables to be selected. A random code generator is operable in response to the selected stored code variables in order to generate a sequence of randomized key digital bits. Circuitry is provided to encipher clear text digital data in a synchronous manner and to transmit enciphered data through a synchronous data link.
摘要翻译：本说明书公开了一种数字密码系统，其中发送和接收单元中的每一个包括具有前面板的壳体。按钮开关输入阵列安装在前面板上，每个按钮开关对应不同的数字，以便手动输入代码变量。在前面板上提供数字显示器，以临时显示通过阵列输入的每个代码变量。提供存储电路以存储通过阵列输入的代码变量。在前面板上提供开关，以便选择所存储的代码变量中的任何一个。响应于所选择的存储的代码变量，随机码发生器可操作，以便产生随机的密钥数字比特序列。提供电路以同步方式加密明文数字数据，并通过同步数据链路发送加密数据。

2. 发明授权

US4170714A Digital cryptographic system and testing thereof 失效
标题翻译：数字密码系统及其测试
公开(公告)号：US4170714A
公开(公告)日：1979-10-09
申请号：US910010
申请日：1978-05-26
申请人： Kenneth M. Branscome , Barrie O. Morgan , Merlon B. Carter
发明人： Kenneth M. Branscome , Barrie O. Morgan , Merlon B. Carter
IPC分类号： H04L9/10 , H04L9/18 , H04L9/00
CPC分类号： H04L9/12 , H04L2209/12 , H04L2209/26
摘要： The specification discloses a digital cryptographic system wherein each of the transmitting and receiving units includes a housing having a front panel. A push-button switch input array is mounted on the front panel, with each push-button switch corresponding to a different number to enable the manual inputting of code variables therethrough. A digital display is provided on the front panel to temporarily display each of the code variables input through the array. Storage circuits are provided to store the code variables input through the array. A switch is provided on the front panel to enable any one of the stored code variables to be selected. A random code generator is operable in response to the selected stored code variables in order to generate a sequence of randomized key digital bits. Circuitry is provided to encipher clear text digital data in a synchronous manner and to transmit enciphered data through a synchronous data link.
摘要翻译：本说明书公开了一种数字密码系统，其中发送和接收单元中的每一个包括具有前面板的壳体。按钮开关输入阵列安装在前面板上，每个按钮开关对应不同的数字，以便手动输入代码变量。在前面板上提供数字显示器，以临时显示通过阵列输入的每个代码变量。提供存储电路以存储通过阵列输入的代码变量。在前面板上提供开关，以便选择所存储的代码变量中的任何一个。响应于所选择的存储的代码变量，随机码发生器可操作，以便产生随机的密钥数字比特序列。提供电路以同步方式加密明文数字数据，并通过同步数据链路发送加密数据。

3. 发明授权

US4229817A Portable electronic cryptographic device 失效
标题翻译：便携式电子密码装置
公开(公告)号：US4229817A
公开(公告)日：1980-10-21
申请号：US901068
申请日：1978-04-28
申请人： Barrie O. Morgan , Merlon B. Carter
发明人： Barrie O. Morgan , Merlon B. Carter
IPC分类号： G09C1/10 , H04L9/00 , H04L9/10 , H04K1/02
CPC分类号： G09C1/10
摘要： The specification discloses a portable cryptographic device, adapted to be hand-held through solid state electronics, which possesses the capability for enciphering and deciphering plain text. The housing of the device has a keyboard for the input of plain text or cipher text, including numeric characters and control signals and, further, has a display for displaying the inputs. Circuitry within the device is responsive to the inputs and controls the display. Additional circuitry enciphers or deciphers the inputs and substitutes the resulting text into the display.The device incorporates a random code generator for generating a randomized message key which, together with the keyboard inputs, initiates and generates a long sequence of randomized letters for enciphering purposes. In a deciphering mode, a predetermined message key may be entered to set the random code generator at a point to generate the originally entered plain text. Also, a basic key composed of multiple segments fully initializes the random code generator such that more than one device could be used to encipher and decipher text. Similarly, by using different segments of the basic key, varying levels of security can be obtained.Test circuitry is also provided to insure maintenance of the proper key variables and proper operation of the device.
摘要翻译：本说明书公开了一种适用于通过固态电子手持式的便携式密码装置，其具有加密和解密纯文本的能力。设备的外壳具有用于输入明文或密文的键盘，包括数字字符和控制信号，并且还具有用于显示输入的显示。设备内的电路响应输入并控制显示。附加电路加密或解密输入，并将结果文本替换为显示。该装置包括用于产生随机化消息密钥的随机码发生器，随机消息密钥与键盘输入一起发起并产生用于加密目的的长序列随机字母。在解密模式中，可以输入预定的消息密钥以将随机码生成器设置在一个点上，以生成原始输入的纯文本。此外，由多个段组成的基本密钥完全初始化随机码发生器，使得可以使用多于一个设备来加密和解密文本。类似地，通过使用基本密钥的不同段，可以获得不同级别的安全性。还提供测试电路以确保正确的键变量的维护和设备的正确操作。

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