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公开(公告)号：US20080056405A1
公开(公告)日：2008-03-06
申请号：US11889708
申请日：2007-08-15
IPC分类号： H04L25/34
CPC分类号： H04L25/4917
摘要： A data communication apparatus which improves security against eavesdropping is provided for secret communication using Y-00 protocol. A multi-level code generation section 111 generates, based on key information 11, a multi-level code sequence 12 in which a signal level changes so as to be approximately random numbers. A level conversion section 113 irreversibly converts the multi-level code sequence 12 such that a converted multi-level code sequence 19 does not constitute a mapping of the multi-level code sequence 12. A multi-level processing section 112 generates a multi-level signal 13 having a plurality of levels each corresponding to a combination between the information data 10 and the multi-level code sequence 12. A modulator section 114 modulates a multi-level signal 14 in a predetermined modulation method and outputs a modulated signal 15.
摘要翻译： 提供了一种提高安全性以防窃取的数据通信装置，用于使用Y-00协议的秘密通信。 多级代码生成部111基于密钥信息11生成信号电平变化为近似随机数的多级代码序列12。 电平转换部分113不可逆地转换多级代码序列12，使得转换的多级代码序列19不构成多级代码序列12的映射。多级处理部分112生成多级代码序列 信号13具有多个电平，每个电平分别对应于信息数据10和多电平码序列12之间的组合。调制器部分114以预定的调制方式调制多电平信号14并输出调制信号15。
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公开(公告)号：US20070201692A1
公开(公告)日：2007-08-30
申请号：US11699019
申请日：2007-01-29
IPC分类号： H04L9/00
CPC分类号： H04B10/85 , H04B10/505 , H04B10/5055 , H04B10/516 , H04K1/02 , H04L25/4917
摘要： A data communication apparatus which causes the eavesdropper to take a significantly increased time to analyze a cipher text and provides high concealability is provided. In a modulator section 112a, a branching section 114 branches a lightwave 20 outputted from a light source 113, and outputs respective branched lights to a first light path 117 and a second light path 118 respectively having different light path lengths. A light modulator section 116 modulates, based on a multi-level signal 13, a lightwave propagating at least one light path of the first light path 117 and the second light path 118. An interference section 119 causes the lightwaves outputted from the first light path 117 and the second light path 118 to interfere with each other, and outputs such interfered lightwave as a modulated signal 14.
摘要翻译： 提供一种数据通信装置，其使得窃听者显着增加时间来分析密文并提供高隐藏性。 在调制器部分112a中，分支部分114分支从光源113输出的光波20，并将各自的分支光输出到分别具有不同光路长度的第一光路117和第二光路118。 光调制器部分116基于多电平信号13调制传播第一光路117和第二光路118的至少一个光路的光波。 干扰部分119使得从第一光路117和第二光路118输出的光波彼此干扰，并且将这种被干扰的光波作为调制信号14输出。
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公开(公告)号：US20070172058A1
公开(公告)日：2007-07-26
申请号：US11656969
申请日：2007-01-24
IPC分类号： H04N7/167
CPC分类号： H04N7/1675 , H04N21/2347 , H04N21/26613 , H04N21/4405 , H04N21/4623 , H04N21/835
摘要： A data communication apparatus 1 for safely transmitting information data 11 and additional information 14 is provided. In a data transmitting apparatus 101, a random number sequence generating part 111 generates a random number sequence 12 from key information 11. A diffusing part 112 generates diffused additional information 14 by time-diffusing additional information 14. A multi-level signal generating part 113 generates a multi-level signal 16 the signal level of which varies substantially like a random number, based on information data 13, the random number sequence 12, and the diffused additional information 14. In a data receiving apparatus 201, a random number sequence generating part 211 generates a random number sequence 22 from key information 21. An information data decoding part 213 decodes information data 23 and additional information 24 based on the random number sequence 22.
摘要翻译： 提供一种用于安全地发送信息数据11和附加信息14的数据通信装置1。 在数据发送装置101中，随机数序列生成部111从密钥信息11生成随机数序列12。 扩散部分112通过时间扩散附加信息14来生成扩散的附加信息14。 多电平信号生成部113基于信息数据13，随机数序列12以及扩散的附加信息14生成信号电平基本上与随机数变化的多电平信号16。 在数据接收装置201中，随机数序列生成部211从密钥信息21生成随机数序列22。 信息数据解码部分213基于随机数序列22解码信息数据23和附加信息24。
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公开(公告)号：US08180052B2
公开(公告)日：2012-05-15
申请号：US11661313
申请日：2005-08-31
IPC分类号： H04K1/00
CPC分类号： H04L9/088 , H04L9/12 , H04L2209/08
摘要： A data communication apparatus wherein stealthiness is enhanced by significantly increasing the time required for a wiretapper to decrypt an encrypted text. The data communication apparatus is constituted by connecting a data transmitting apparatus and a data receiving apparatus via a transmission path. The data transmitting apparatus receives a first predetermined initial value (key information) and information data, generates a multi-valued signal, the level of which varies substantially in a random number manner, and converts the multi-valued signal to a modulated signal of a predetermined modulation format for transmission. The data receiving apparatus demodulates the modulated signal to output the multi-valued signal, and then reproduces the information data from the multi-valued signal and a received second predetermined initial value (key information).
摘要翻译： 一种数据通信装置，其中通过显着增加窃听者解密加密文本所需的时间来增强隐身性。 数据通信装置通过经由传输路径连接数据发送装置和数据接收装置构成。 数据发送装置接收第一预定初始值（密钥信息）和信息数据，生成其电平基本上以随机数方式变化的多值信号，并将多值信号转换为 用于传输的预定调制格式。 数据接收装置解调调制信号以输出多值信号，然后从多值信号和接收到的第二预定初始值（密钥信息）再现信息数据。
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公开(公告)号：US20080063208A1
公开(公告)日：2008-03-13
申请号：US11665684
申请日：2005-11-04
申请人： Tsuyoshi Ikushima , Satoshi Furusawa , Masaru Fuse
发明人： Tsuyoshi Ikushima , Satoshi Furusawa , Masaru Fuse
CPC分类号： H04L25/4917 , H04K1/02 , H04L9/0852 , H04L2209/08
摘要： A data communication system is provided in which a time required for a wiretapper to decrypt an encrypted text is significantly increased so that concealment is improved. In a data transmitting apparatus (17105), a multilevel encoding part (111) switches a plurality of key information to generate a multilevel code sequence in which the average values of signal levels are different, and then combines the generated multilevel code sequence with information data to generate a multilevel signal having a level corresponding to the combination of the two signal levels. A light modulating part (125) converts the multilevel signal into a modulated signal of a predetermined modulation scheme and transmits it. In a data receiving apparatus (17205), a light demodulating part (219) demodulates the received modulated signal into the multilevel signal. A multilevel decoding part (212) switches a plurality of key information to generate a multilevel code sequence in which the average values of signal levels are different, and then identifies the multilevel signal based on this generated multilevel code sequence to regenerate the information data.
摘要翻译： 提供了一种数据通信系统，其中窃听者解密加密文本所需的时间显着增加，从而改善了隐藏。 在数据发送装置（17105）中，多级编码部（111）切换多个密钥信息，生成信号电平的平均值不同的多级代码序列，然后将生成的多级代码序列与信息数据 以产生具有与两个信号电平的组合相对应的电平的多电平信号。 光调制部分（125）将多电平信号转换为预定调制方案的调制信号并将其发送。 在数据接收装置（17205）中，光解调部（219）将接收到的调制信号解调为多电平信号。 多级解码部分（212）切换多个密钥信息以产生其中信号电平的平均值不同的多级代码序列，然后基于该生成的多级代码序列来识别多级信号以再生信息数据。
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公开(公告)号：US20060280307A1
公开(公告)日：2006-12-14
申请号：US11447878
申请日：2006-06-07
申请人： Tsuyoshi Ikushima , Masaru Fuse , Satoshi Furusawa
发明人： Tsuyoshi Ikushima , Masaru Fuse , Satoshi Furusawa
IPC分类号： H04L9/00
CPC分类号： H04K1/00 , H04L9/0838 , H04L2209/08
摘要： There provided are transmission and reception apparatuses which can realize performing key distribution and encrypted communication in a simultaneous manner. A transmission apparatus overlaps minute amplitude modulation based on a random number signal on a multi-level signal generated based on information data and key information. A reception apparatus, in addition to data identification, performs, by using 2 threshold values between which a sufficiently larger interval than a modulation amplitude by a random number is provided, 3 kinds of identification for the random number signal: “1”, “0”, and “identification impossible”, sends back information of bits with which the identification has succeeded, and shares the sent bits as a new key. Thus, the common device including the transmission and reception apparatuses can realize performing the key distribution and the encrypted communication in the simultaneous manner.
摘要翻译： 提供了能够以同时方式实现密钥分发和加密通信的发送和接收设备。 传输装置根据基于信息数据和密钥信息生成的多级信号上的随机数信号重叠微小幅度调制。 除了数据识别之外，接收装置通过使用两个阈值，其中提供了比通过随机数的调制幅度足够大的间隔的3个阈值，对于随机数信号“1”，“0” “和”不可识别“，发回识别成功的比特信息，并将发送的比特共享为新密钥。 因此，包括发送和接收设备的公共设备可以以同时的方式实现密钥分发和加密通信。
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公开(公告)号：US20100266124A1
公开(公告)日：2010-10-21
申请号：US12814871
申请日：2010-06-14
IPC分类号： H04L9/00
CPC分类号： H04L9/088 , H04L9/12 , H04L2209/08
摘要： A data communication apparatus wherein the stealthiness has been enhanced by significantly increasing the time required for a wiretapper to decrypt an encrypted text. The data communication apparatus is constituted by connecting a data transmitting apparatus and a data receiving apparatus via a transmission path. The data transmitting apparatus receives a first predetermined initial value (key information) and information data, generates a multi-valued signal the level of which varies substantially like a random number, and converts the multi-valued signal to a modulated signal of a predetermined modulation format for transmission. The data receiving apparatus demodulates the modulated signal to output the multi-valued signal, and then reproduces the information data from the multi-valued signal and a second predetermined initial value (key information) that is received.
摘要翻译： 一种数据通信装置，其中通过显着增加窃听者解密加密文本所需的时间，增强了隐身性。 数据通信装置通过经由传输路径连接数据发送装置和数据接收装置构成。 数据发送装置接收第一预定初始值（密钥信息）和信息数据，生成其电平基本像随机数变化的多值信号，并将多值信号转换成预定调制信号 传输格式。 数据接收装置解调调制信号以输出多值信号，然后从多值信号再生信息数据和接收到的第二预定初始值（密钥信息）。
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公开(公告)号：US07907731B2
公开(公告)日：2011-03-15
申请号：US11664521
申请日：2005-10-05
IPC分类号： H04L9/12
CPC分类号： H04K3/825 , H04K1/02 , H04K3/43 , H04K3/44 , H04K3/45 , H04K2203/14 , H04L25/4917
摘要： A data communication system that enhances concealment by significantly increasing the time required for a wiretapper to decrypt a cipher text. The data communication system is constituted by connecting a data transmitting apparatus (13105) to a data receiving apparatus (11201) via a transmission path (110). In the data transmitting apparatus (13105), a multilevel encoding part (111) receives a predetermined first initial value (key information) and information data and generates a multilevel signal that varies in level substantially in a random number manner. A dummy signal superimposing part (118) superimposes a dummy signal on the multilevel signal. A modulating part (112) converts the multilevel signal to a modulated signal of a predetermined modulation form and transmits the modulated signal. The data receiving apparatus (11201) demodulates the modulated signal to output the multilevel signal, and receives a predetermined second initial value (key information) and the multilevel signal to reproduce the information data.
摘要翻译： 数据通信系统通过显着增加窃听者解密密文所需的时间来增强隐藏。 数据通信系统通过经由传输路径（110）将数据发送装置（13105）连接到数据接收装置（11201）而构成。 在数据发送装置（13105）中，多级编码部（111）接收预定的第一初始值（密钥信息）和信息数据，并生成基本上以随机数方式变化的多级信号。 虚拟信号叠加部分（118）将虚拟信号叠加在多电平信号上。 调制部分（112）将多电平信号转换为预定调制形式的调制信号并发送调制信号。 数据接收装置（11201）解调调制信号以输出多电平信号，并接收预定的第二初始值（密钥信息）和多电平信号以再现信息数据。
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公开(公告)号：US20100303234A1
公开(公告)日：2010-12-02
申请号：US12814886
申请日：2010-06-14
IPC分类号： H04L9/18
CPC分类号： H04L9/088 , H04L9/12 , H04L2209/08
摘要： A data communication apparatus wherein the stealthiness has been enhanced by significantly increasing the time required for a wiretapper to decrypt an encrypted text. The data communication apparatus is constituted by connecting a data transmitting apparatus and a data receiving apparatus via a transmission path. The data transmitting apparatus receives a first predetermined initial value (key information) and information data, generates a multi-valued signal the level of which varies substantially like a random number, and converts the multi-valued signal to a modulated signal of a predetermined modulation format for transmission. The data receiving apparatus demodulates the modulated signal to output the multi-valued signal, and then reproduces the information data from the multi-valued signal and a second predetermined initial value (key information) that is received.
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公开(公告)号：US20080025511A1
公开(公告)日：2008-01-31
申请号：US11664521
申请日：2005-10-05
CPC分类号： H04K3/825 , H04K1/02 , H04K3/43 , H04K3/44 , H04K3/45 , H04K2203/14 , H04L25/4917
摘要： A data communication system wherein the concealment is enhanced by significantly increasing the time required for the wiretapper to decrypt a cipher text. The data communication system is constituted by connecting a data transmitting apparatus (13105) to a data receiving apparatus (11201) via a transmission path (110). In the data transmitting apparatus (13105), a multilevel encoding part (111) receives a predetermined first initial value (key information) and in formation data and generates a multilevel signal that varies in level substantially in a random number manner. A dummy signal superimposing part (118) superimposes a dummy signal on the multilevel signal. A modulating part (112) converts the multilevel signal to a modulated signal of a predetermined modulation form and transmits the modulated signal. The data receiving apparatus (11201) demodulates the modulated signal so as to output the multilevel signal, and receives a predetermined second initial value (key information) and the multilevel signal so as to reproduce the information data.
摘要翻译： 一种数据通信系统，其中通过显着增加窃听者解密密文所需的时间来增强隐藏。 数据通信系统通过经由传输路径（110）将数据发送装置（13105）连接到数据接收装置（11201）而构成。 在数据发送装置（13105）中，多级编码部（111）接收预定的第一初始值（密钥信息）和接收数据，并生成基本上随机数变化的多级信号。 虚拟信号叠加部分（118）将虚拟信号叠加在多电平信号上。 调制部分（112）将多电平信号转换为预定调制形式的调制信号并发送调制信号。 数据接收装置（11201）解调调制信号以输出多电平信号，并接收预定的第二初始值（密钥信息）和多电平信号，以再现信息数据。
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