公开(公告)号：US20070153670A1

公开(公告)日：2007-07-05

申请号：US11689565

申请日：2007-03-22

申请人： Yuji NAGAI ,  Chosaku Noka ,  Akihito Ogawa ,  Kazuto Kuroda

发明人： Yuji NAGAI ,  Chosaku Noka ,  Akihito Ogawa ,  Kazuto Kuroda

IPC分类号： G11B7/24

摘要： Address information is formed by M wobbles (integer M is the number of wobble waves) per bit as a basic unit, and is NRZ-recorded. Also, a sync signal used in sync detection of the address information is formed by N wobbles per bit as a basic unit (integer N is the number of wobble waves and M=2N). The sync signal with such configuration (6 wobbles per bit) is recorded on the head side of the address information (12 wobbles per bit). In this way, even when external noise is large, a modulated wobble signal can be demodulated more accurately.

摘要翻译： 地址信息由每个位的M个摆动（整数M是摆动波数）作为基本单位形成，并且被NRZ记录。 此外，用于地址信息的同步检测的同步信号由每位N个摆动形成为基本单位（整数N是摆动波数，M = 2N）。 具有这种配置的同步信号（每位6个摆动）被记录在地址信息的头侧（每位12个摆动）。 以这种方式，即使当外部噪声大时，可以更精确地解调调制的摆动信号。

公开(公告)号：US20100135436A1

公开(公告)日：2010-06-03

申请号：US12626338

申请日：2009-11-25

申请人： Yuji NAGAI ,  Chosaku Noda ,  Kazuo Watabe ,  Akihito Ogawa ,  Kazuto Kuroda ,  Nobuhisa Yoshida ,  Nobumasa Naito ,  Naoki Morishita ,  Naomasa Nakamura ,  Hideaki Ohsawa ,  Hiroharu Sato ,  Hisashi Yamada ,  Toshihiko Kaneshige

发明人： Yuji NAGAI ,  Chosaku Noda ,  Kazuo Watabe ,  Akihito Ogawa ,  Kazuto Kuroda ,  Nobuhisa Yoshida ,  Nobumasa Naito ,  Naoki Morishita ,  Naomasa Nakamura ,  Hideaki Ohsawa ,  Hiroharu Sato ,  Hisashi Yamada ,  Toshihiko Kaneshige

IPC分类号： H04L27/04

CPC分类号： G11B20/14 ,  G11B20/0021 ,  G11B20/00579 ,  G11B20/00884 ,  G11B20/1426 ,  G11B2020/1457

摘要： According to one embodiment, a first encoder encodes main information, a second encoder encodes sub-information, a first modulator modulates a carrier based on an output of the first encoder, a duplicating module duplicates an output of the second encoder to generate encoded sub-information units, and a second modulator amplitude-modulates an output of the first modulator based on the encoded sub-information units. The second modulator amplitude-modulates with σ/(μ×(2N)1/2) being 0.4 or less, wherein a noise power of a transmission path or a storage medium is σ2, a number of the encoded sub-information units is N, signal levels after amplitude modulation, which correspond to bit 1 and bit 0 of the encoded sub-information units, are A and B, and a level difference A−B is μ.

摘要翻译： 根据一个实施例，第一编码器对主信息进行编码，第二编码器对子信息进行编码，第一调制器基于第一编码器的输出调制载波，复制模块复制第二编码器的输出， 信息单元和第二调制器基于编码的子信息单元对第一调制器的输出进行幅度调制。 第二调制器以＆sgr; /（μ×（2N）1/2）振幅调制为0.4或更小，其中传输路径或存储介质的噪声功率为2，编码子信息的数量 单位为N，对应于编码子信息单元的位1和位0的幅度调制后的信号电平为A和B，电平差A-B为μ。

公开(公告)号：US20130339741A1

公开(公告)日：2013-12-19

申请号：US13523188

申请日：2012-06-14

申请人： Yuji NAGAI ,  Taku KATO ,  Tatsuyuki MATSUSHITA

发明人： Yuji NAGAI ,  Taku KATO ,  Tatsuyuki MATSUSHITA

IPC分类号： H04L9/32

CPC分类号： H04L9/32 ,  H04L9/0877 ,  H04L9/0897 ,  H04L9/3234 ,  H04L9/3271

摘要： According to one embodiment, a authentication method comprising: generating a second key by the first key, the first key being stored in a memory and being prohibited from being read from outside; generating a session key by the second key; generating first authentication information, the secret identification information stored in a memory and being prohibited from being read from outside; transmitting encrypted secret identification information to an external device and receiving second authentication information from the external device, the encrypted secret identification information stored in a memory and readable, the second authentication information generated based on the encrypted secret identification information; and determining whether the first authentication information and the second authentication information match.

摘要翻译： 根据一个实施例，一种认证方法，包括：通过第一密钥生成第二密钥，第一密钥存储在存储器中并被禁止从外部读取; 通过第二个密钥生成会话密钥; 生成第一认证信息，存储在存储器中并被禁止从外部读取的秘密识别信息; 向外部设备发送加密的秘密识别信息并从外部设备接收第二认证信息，所述加密的秘密识别信息存储在存储器中并且可读，所述第二认证信息是基于所述加密的秘密识别信息生成的; 以及确定所述第一认证信息和所述第二认证信息是否匹配。

公开(公告)号：US20130142325A1

公开(公告)日：2013-06-06

申请号：US13524873

申请日：2012-06-15

申请人： Yuji NAGAI ,  Toshihiro Suzuki ,  Noboru Shibata ,  Taku Kato ,  Tatsuyuki Matsushita

发明人： Yuji NAGAI ,  Toshihiro Suzuki ,  Noboru Shibata ,  Taku Kato ,  Tatsuyuki Matsushita

IPC分类号： H04L9/28

CPC分类号： H04L9/0816 ,  G11B20/00086 ,  G11B20/0021 ,  G11B20/00217 ,  G11B20/00253 ,  H04L9/0822 ,  H04L9/0833 ,  H04L9/0897 ,  H04L9/32 ,  H04L2209/601

摘要： According to one embodiment, a memory includes a first storage region capable of storing first key (NKey) information, and secret identification information (SecretID) unique to the authenticate, reading and writing data from and to the first storage region from an outside of the authenticatee being inhibited at least after the authenticatee is shipped.

摘要翻译： 根据一个实施例，存储器包括能够存储第一密钥（NKey）信息的第一存储区域和从第一存储区域的外部识别，读取和写入数据的唯一的秘密识别信息（SecretID） 至少在验证者发货后，验证者被禁止。

公开(公告)号：US20130336478A1

公开(公告)日：2013-12-19

申请号：US13524634

申请日：2012-06-15

申请人： Yuji NAGAI ,  Taku KATO ,  Tatsuyuki MATSUSHITA

发明人： Yuji NAGAI ,  Taku KATO ,  Tatsuyuki MATSUSHITA

IPC分类号： H04L9/00

CPC分类号： G06F12/1408 ,  G06F2212/1052 ,  H04L9/0861 ,  H04L9/3271

摘要： According to one embodiment, an authentication method comprising: generating a second key by the first key, the first key being stored in a memory and being prohibited from being read from outside; generating a session key by the second key; generating first authentication information, the secret identification information stored in a memory and being prohibited from being read from outside; transmitting encrypted secret identification information to an external device and receiving second authentication information from the external device, the encrypted secret identification information stored in a memory and readable, the second authentication information generated based on the encrypted secret identification information; and determining whether the first authentication information and the second authentication information match.

摘要翻译： 根据一个实施例，一种认证方法，包括：通过第一密钥生成第二密钥，第一密钥存储在存储器中并被禁止从外部读取; 通过第二个密钥生成会话密钥; 生成第一认证信息，存储在存储器中并被禁止从外部读取的秘密识别信息; 向外部设备发送加密的秘密识别信息并从外部设备接收第二认证信息，所述加密的秘密识别信息存储在存储器中并且可读，所述第二认证信息是基于所述加密的秘密识别信息生成的; 以及确定所述第一认证信息和所述第二认证信息是否匹配。

公开(公告)号：US20130339744A1

公开(公告)日：2013-12-19

申请号：US13517900

申请日：2012-06-14

申请人： Yuji NAGAI ,  Taku KATO ,  Tatsuyuki MATSUSHITA

发明人： Yuji NAGAI ,  Taku KATO ,  Tatsuyuki MATSUSHITA

IPC分类号： G06F21/00

CPC分类号： H04L63/061 ,  G06F21/10

摘要： According to one embodiment, a device includes a second data generator configured to generate a session key (SKey) by encrypting a random number (RN) with the second key (HKey) in AES operation; a one-way function processor configured to generate an authentication information (Oneway-ID) by processing the secret identification information (SecretID) with the session key (SKey) in one-way function operation; and a data output interface configured to output the encrypted secret identification information (E-SecretID) and the authentication information (Oneway-ID) to outside of the device.

摘要翻译： 根据一个实施例，一种设备包括：第二数据生成器，被配置为通过在AES操作中用第二密钥（HKey）加密随机数（RN）来生成会话密钥（SKey）; 单向功能处理器，被配置为通过在单向功能操作中通过会话密钥（SKey）处理秘密识别信息（SecretID）来生成认证信息（Oneway-ID）; 以及数据输出接口，被配置为将加密的秘密识别信息（E-SecretID）和认证信息（Oneway-ID）输出到设备外部。

公开(公告)号：US20130339735A1

公开(公告)日：2013-12-19

申请号：US13523128

申请日：2012-06-14

申请人： Yuji NAGAI ,  Taku KATO ,  Tatsuyuki MATSUSHITA

发明人： Yuji NAGAI ,  Taku KATO ,  Tatsuyuki MATSUSHITA

IPC分类号： H04L9/32

CPC分类号： G06F12/1408 ,  G06F2212/1052 ,  H04L9/0861 ,  H04L9/3273

摘要： According to one embodiment, a authentication method comprising: generating a second key by the first key, the first key being stored in a memory and being prohibited from being read from outside; generating a session key by the second key; generating first authentication information, the secret identification information stored in a memory and being prohibited from being read from outside; transmitting encrypted secret identification information to an external device and receiving second authentication information from the external device, the encrypted secret identification information stored in a memory and readable, the second authentication information generated based on the encrypted secret identification information; and determining whether the first authentication information and the second authentication information match.

公开(公告)号：US20130336475A1

公开(公告)日：2013-12-19

申请号：US13523020

申请日：2012-06-14

申请人： Yuji NAGAI ,  Taku KATO ,  Tatsuyuki MATSUSHITA

发明人： Yuji NAGAI ,  Taku KATO ,  Tatsuyuki MATSUSHITA

IPC分类号： H04L9/00

CPC分类号： H04L9/3242 ,  H04L9/3273 ,  H04L2209/122 ,  H04L2209/60 ,  H04N21/4182 ,  H04N21/4185

摘要： A device includes a first memory area being used to store a first key and secret identification information unique to the device; a second memory area being used to store encrypted secret identification information generated by encrypting the secret identification information; a first data generator configured to generate a second key by encrypting a host constant with the first key in AES operation; a second data generator configured to generate a session key by encrypting a random number with the second key in AES operation; a one-way function processor configured to generate an authentication information by processing the secret identification information with the session key in one-way function operation; and a data output interface configured to output the encrypted secret identification information and the authentication information to outside of the device.

摘要翻译： 一种设备包括用于存储第一密钥的第一存储器区域和该设备唯一的秘密识别信息; 第二存储区域用于存储通过加密秘密识别信息而生成的加密的秘密识别信息; 第一数据生成器，被配置为通过在AES操作中用第一密钥加密主机常数来生成第二密钥; 第二数据发生器，被配置为通过在AES操作中用第二密钥加密随机数来生成会话密钥; 单向功能处理器，被配置为通过在单向功能操作中用所述会话密钥处理所述秘密识别信息来生成认证信息; 以及数据输出接口，被配置为将加密的秘密识别信息和认证信息输出到设备外部。

公开(公告)号：US20130145162A1

公开(公告)日：2013-06-06

申请号：US13524843

申请日：2012-06-15

申请人： Yuji NAGAI ,  Taku Kato ,  Tatsuyuki Matsushita ,  Toshihiro Suzuki ,  Noboru Shibata

发明人： Yuji NAGAI ,  Taku Kato ,  Tatsuyuki Matsushita ,  Toshihiro Suzuki ,  Noboru Shibata

IPC分类号： H04L9/32

CPC分类号： H04L9/0816 ,  G11B20/00362 ,  G11B20/00427 ,  H04L9/0822 ,  H04L9/0833 ,  H04L9/0897 ,  H04L9/32 ,  H04L2209/601

摘要： According to one embodiment, a device includes first and second data generator, a one-way function processor, and a data output interface. The first data generator generates a second key by encrypting a host constant with a first key in AES operation. The second data generator generates a session key by encrypting a random number with a second key in AES operation. The one-way function processor generates authentication information by processing secret identification information with the session key in one-way function operation. The data output interface outputs the encrypted secret identification information, a family key block, and the authentication information to outside of the device.

摘要翻译： 根据一个实施例，设备包括第一和第二数据生成器，单向功能处理器和数据输出接口。 第一个数据生成器通过AES操作中的第一个密钥加密主机常数来生成第二个密钥。 第二数据生成器通过在AES操作中用第二密钥加密随机数生成会话密钥。 单向功能处理器通过在单向功能操作中通过会话密钥处理秘密识别信息来生成认证信息。 数据输出接口将加密的秘密识别信息，家庭密钥块和认证信息输出到设备外部。

公开(公告)号：US20140136841A1

公开(公告)日：2014-05-15

申请号：US13523259

申请日：2012-06-14

申请人： Yuji NAGAI ,  Taku KATO ,  Tatsuyuki MATSUSHITA

发明人： Yuji NAGAI ,  Taku KATO ,  Tatsuyuki MATSUSHITA

IPC分类号： H04L9/32

CPC分类号： H04L9/0822 ,  H04L9/0866 ,  H04L9/0869 ,  H04L9/0897 ,  H04L9/3242 ,  H04L9/3271

摘要： According to one embodiment, a device includes a first data generator configured to generate a second key (HKey) by encrypting a host constant (HC) with the first key (NKey); a second data generator configured to generate a session key (SKey) by encrypting a random number (RN) with the second key (HKey); a one-way function processor configured to generate an authentication information (Oneway-ID) by processing the secret identification information (SecretID) with the session key (SKey) in one-way function operation; and a data output interface configured to output the encrypted secret identification information (E-SecretID) and the authentication information (Oneway-ID) to outside of the device.

摘要翻译： 根据一个实施例，一种设备包括：第一数据生成器，被配置为通过用第一密钥（NKey）加密主机常数（HC）来生成第二密钥（HKey）; 第二数据生成器，被配置为通过用第二密钥（HKey）加密随机数（RN）来生成会话密钥（SKey）; 单向功能处理器，被配置为通过在单向功能操作中通过会话密钥（SKey）处理秘密识别信息（SecretID）来生成认证信息（Oneway-ID）; 以及数据输出接口，被配置为将加密的秘密识别信息（E-SecretID）和认证信息（Oneway-ID）输出到设备外部。