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116 条记录 (耗时 0.029 秒)

    Information devices which select and use one out of plurality of encryption utilization protocols for protecting copyrights of digital productions
    111.
    发明授权
    Information devices which select and use one out of plurality of encryption utilization protocols for protecting copyrights of digital productions 失效
    选择和使用多个加密利用协议中的一个用于保护数字制作的版权的信息设备

    公开(公告)号：US06182215B2

    公开(公告)日：2001-01-30

    申请号：US09030785

    申请日：1998-02-25

    申请人： Makoto Tatebayashi ,  Syunji Harada

    发明人： Makoto Tatebayashi ,  Syunji Harada

    IPC分类号： H04L932

    CPC分类号： H04N7/1675 ,  H04L9/3271 ,  H04N21/4367 ,  H04N21/4627

    摘要： A verifier and a claimant notify each other of verifier type information and claimant type information, respectively. The verifier determines a verifier method corresponding to a combination of the verifier type information and the notified claimant type information, generates challenge data in accordance with the determined verifier method, and transmits the challenge data to the claimant. On receiving the challenge data from the verifier, the claimant determines a claimant method corresponding to the combination of the claimant type information and the notified verifier type information. The claimant then performs claimant processing on the challenge data using the determined claimant method to obtain response data, and transmits the response data to the verifier. On receiving the response data from the claimant, the verifier performs verifier processing on the response data using the determined verifier method.

    摘要翻译： 验证者和索赔人分别通知验证者类型信息和索赔人类型信息。 验证者确定对应于验证者类型信息和通知的索赔人类型信息的组合的验证器方法，根据所确定的验证方法生成质询数据，并将该质询数据发送给索赔人。 在从验证者接收到质询数据时，索赔人确定与索赔人类型信息和所通知的验证者类型信息的组合相对应的索赔方法。 然后，索赔人使用确定的索赔方法对挑战数据执行索赔处理以获得响应数据，并将响应数据发送给验证者。 在从索赔人接收到响应数据时，验证者使用确定的验证器方法对响应数据执行验证器处理。

    One-way data conversion apparatus and device authentication system
    112.
    发明授权
    One-way data conversion apparatus and device authentication system 失效
    单向数据转换装置和设备认证系统

    公开(公告)号：US6049611A

    公开(公告)日：2000-04-11

    申请号：US963680

    申请日：1997-10-31

    申请人： Makoto Tatebayashi ,  Natsume Matsuzaki ,  Koichi Hirayama

    发明人： Makoto Tatebayashi ,  Natsume Matsuzaki ,  Koichi Hirayama

    IPC分类号： H04L9/32 ,  G09C1/00 ,  H04L9/00

    CPC分类号： H04L9/3271 ,  H04L9/0625 ,  H04L2209/043 ,  H04L2209/12 ,  H04L2209/60

    摘要： The verifier apparatus 50 includes a random number generation unit 51 that generates a 2n-bit random number, a separator unit 52 that separates the random number into two sets of n-bit data, a data conversion module 53 that converts one set of separated data using the other set of separated data as a key, and a comparator unit 54 that judges whether the converted result matches claimant data sent back from the claimant apparatus 60. The claimant apparatus 60 includes a separator unit 61 and a data conversion module 62 that have the same functions as the separator unit 52 and the data conversion module 53 in the verifier apparatus 50. The claimant apparatus 60 generates n-bit claimant data from the 2n-bit random number generated by the verifier apparatus 50, and sends the generated claimant data to the verifier apparatus 50.

    摘要翻译： 验证装置50包括生成2n位随机数的随机数生成单元51，将随机数分成两组n位数据的分离单元52，将一组分离数据进行转换的数据转换模块53 使用另一组分离的数据作为键，以及比较器单元54，其判断转换的结果是否与从索赔者装置60发回的索赔数据相匹配。索赔者装置60包括分离单元61和数据转换模块62， 与验证器装置50中的分离器单元52和数据转换模块53具有相同的功能。索赔装置60根据由验证器装置50生成的2n位随机数生成n位请求者数据，并发送所生成的请求者数据 到验证器装置50。

    Method for generating and verifying electronic signatures and privacy communication using elliptic curves
    114.
    发明授权
    Method for generating and verifying electronic signatures and privacy communication using elliptic curves 失效
    使用椭圆曲线生成和验证电子签名和隐私通信的方法

    公开(公告)号：US5442707A

    公开(公告)日：1995-08-15

    申请号：US127253

    申请日：1993-09-27

    申请人： Atsuko Miyaji ,  Makoto Tatebayashi

    发明人： Atsuko Miyaji ,  Makoto Tatebayashi

    IPC分类号： G06F7/72 ,  H04L9/32 ,  H04L9/30 ,  H04L9/00

    CPC分类号： G06F7/725 ,  H04L9/3066 ,  H04L9/3247

    摘要： The present invention discloses a method of generating and verifying electronic signatures for signed communication via a public digital network system by using an elliptic curve. The method is characterized by the step of supplying on the network system public data to each of users from a system provider, wherein an element P whose x-coordinate has 0 is chosen, a single parameter is chosen for the elliptic curve E over a finite field and its base point, and a prime number p is chosen such that one of p=2.sup.t +.alpha. and p=2.sup.t -.alpha. where t is a positive integer and .alpha. is a positive integer. Accordingly, fewer parameters can represent the elliptic curve E, base point P, field of definition GF(p), and order of the base point P, and either the x-coordinate or y-coordinate of the base point P have a small value. As a result, the elliptic curve addition kP can be calculated faster for any k.

    摘要翻译： 本发明公开了一种通过使用椭圆曲线通过公共数字网络系统生成和验证用于签名通信的电子签名的方法。 该方法的特征在于，从系统提供商向网络系统的每个用户提供公共数据的步骤，其中选择x坐标为0的元素P，在有限的情况下为椭圆曲线E选择单个参数 场和其基点，并且素数p被选择为使得p = 2t +α和p = 2t-α中的一个，其中t是正整数，α是正整数。 因此，较少的参数可以表示椭圆曲线E，基点P，定义GF（p）和基点P的阶数，并且基点P的x坐标或y坐标具有小的值 。 结果，对于任何k，可以更快地计算椭圆曲线加法kP。

    Apparatus and method for data encryption with block selection keys and data encryption keys
    115.
    发明授权
    Apparatus and method for data encryption with block selection keys and data encryption keys 失效
    具有块选择键和数据加密密钥的数据加密的装置和方法

    公开(公告)号：US5351299A

    公开(公告)日：1994-09-27

    申请号：US71546

    申请日：1993-06-04

    申请人： Natsume Matsuzaki ,  Makoto Tatebayashi

    发明人： Natsume Matsuzaki ,  Makoto Tatebayashi

    IPC分类号： H04L9/06 ,  H04K1/04

    CPC分类号： H04L9/0625 ,  H04L9/002 ,  H04L2209/12 ,  H04L2209/30

    摘要： Disclosed is a data encryption apparatus strong to differential cryptanalysis, which is now the most influential cryptanalysis method.According to the data encryption apparatus, input data is divided into N blocks, 1 to N-1 blocks of which is selected by a first selection unit with a block selection key. Then the selected blocks of data is compressed into a single block of data in a first combination unit, and encrypted with a data encryption key in an F-function unit. A second combination unit combines the blocks of data not selected in the first selection unit with the output of the F-function unit by XOR. An output unit outputs N blocks of data arranged in the same order as the initial N blocks, in which the 1 to N-1 blocks selected in the first selection unit are outputted without any change, and the other blocks being the outputs of the second combination unit.

    摘要翻译： 公开了一种对差分密码分析具有强大的数据加密装置，现在是最有影响力的密码分析方法。 根据数据加密装置，输入数据被划分为N个块，其中1个到N-1个块由具有块选择密钥的第一选择单元选择。 然后将所选择的数据块压缩成第一组合单元中的单个数据块，并用F函数单元中的数据加密密钥进行加密。 第二组合单元通过异或将第一选择单元中未选择的数据块与F函数单元的输出相组合。 输出单元输出以与初始N个块相同的顺序排列的N个数据块，其中在第一选择单元中选择的1到N-1块被输出而没有任何改变，其他块是第二个 组合单位

    Method for generating a public key
    116.
    发明授权
    Method for generating a public key 失效
    用于生成公钥的方法

    公开(公告)号：US5199070A

    公开(公告)日：1993-03-30

    申请号：US809134

    申请日：1991-12-18

    申请人： Natsume Matsuzaki ,  Shunji Harada ,  Makoto Tatebayashi

    发明人： Natsume Matsuzaki ,  Shunji Harada ,  Makoto Tatebayashi

    IPC分类号： H04L9/30

    CPC分类号： H04L9/3013 ,  H04L9/3073

    摘要： A authentic public key of the other party of user in communications is generated using the other party's user information and identification information, and a center's public information. The center doesn't know the user's secret keys, and no secret communication paths are required between the center and the users. The workload of the users is not increased even if a plurality of centers are introduced to prevent possible wrongdoing by the center.

    摘要翻译： 使用对方的用户信息和识别信息以及中心的公共信息生成通信用户的另一方的真实公钥。 中心不知道用户的密钥，中心和用户之间不需要秘密的通信路径。 即使引入了多个中心来防止可能的中心错误，用户的工作量也不会增加。