Computer system and computer program executing encryption or decryption
    111.
    发明授权
    Computer system and computer program executing encryption or decryption 有权
    计算机系统和计算机程序执行加密或解密

    公开(公告)号:US08054967B2

    公开(公告)日:2011-11-08

    申请号:US11578837

    申请日:2005-04-15

    摘要: A computer system having resistance to timing attacks based on measuring processing times by encrypting or decrypting a plain text or ciphertext by converting the partial data related to the plain text or the encrypted text into conversion data. In the system, a conversion table includes one piece of conversion data corresponding to the partial data at a start position of a line table area and includes data not associated with the conversion in the other position. In the system, a computer program includes an operation instruction for calculating a predetermined position of the conversion data in the conversion table by using acquired partial data and a read instruction for reading out the conversion data from the calculated position.

    摘要翻译: 通过将与纯文本或加密文本相关的部分数据转换为转换数据,通过加密或解密纯文本或密文来基于测量处理时间来抵抗定时攻击的计算机系统。 在系统中,转换表包括与行表区域的开始位置处的部分数据相对应的一条转换数据,并且包括与另一位置的转换不相关的数据。 在该系统中,计算机程序包括用于通过使用获取的部分数据和从计算出的位置读出转换数据的读取指令来计算转换表中的转换数据的预定位置的操作指令。

    Password recovery system
    112.
    发明授权
    Password recovery system 有权
    密码恢复系统

    公开(公告)号:US08024577B2

    公开(公告)日:2011-09-20

    申请号:US10684400

    申请日:2003-10-15

    摘要: The present invention provides a password recovery system that re-supplies a password to only the legitimate user of the password. The password recovery system includes a memory card with CPU and a mobile phone. When a password needs to be recovered, a phone call is made, to the mobile phone, from a telephone connected to a phone line whose phone number is registered in advance into the memory card with CPU. The mobile phone then obtains the telephone number of the phone line via a caller's telephone number notifying service. It is judged whether the obtained telephone number and the registered phone number are the same, and when they are the same, the password stored in the memory card with CPU will be re-supplied so that the user can recover it.

    摘要翻译: 本发明提供了一种密码恢复系统,其仅向密码的合法用户提供密码。 密码恢复系统包括带有CPU和手机的存储卡。 当需要恢复密码时,从连接到电话号码已被注册到电话号码的电话机与手机进行电话通话。 然后,移动电话经由呼叫者的电话号码通知服务获得电话线路的电话号码。 判断所获得的电话号码和注册的电话号码是否相同,并且当它们相同时,存储在具有CPU的存储卡中的密码将被重新提供,以便用户可以恢复。

    Monitoring camera system, imaging device, and video display device
    115.
    发明授权
    Monitoring camera system, imaging device, and video display device 有权
    监控相机系统,成像设备和视频显示设备

    公开(公告)号:US07792295B2

    公开(公告)日:2010-09-07

    申请号:US11909882

    申请日:2006-04-20

    IPC分类号: H04N7/167

    摘要: This relates to an imaging device in which the necessary monitoring of an individual can be realized, while still maintaining protection of an individual's privacy. The imaging device includes an encryption key storage unit in which encryption key data is stored for an individual, an object judging unit operable to judge whether or not the captured video is of the individual, and a limited-capture video generation unit operable to (i) convert a part of the captured video that includes the individual into encrypted video, (ii) generate limited-capture video, which includes the encrypted video, when said object judging unit judges that the captured video includes the individual, and (iii) output the captured video, which does not include the encrypted video, when said object judging unit judges that the captured video does not include the individual.

    摘要翻译: 这涉及一种成像装置,其中可以实现对个人的必要的监视,同时仍保持对个人隐私的保护。 成像装置包括对个人存储加密密钥数据的加密密钥存储单元,可操作以判断所捕获的视频是否为个人的对象判断单元,以及可操作为(i)的限制捕获视频生成单元 当所述对象判断单元判定所述捕获的视频包括所述个人时,生成包含加密视频的限制捕获视频,以及(iii)输出 当所述对象判断单元判断所捕获的视频不包括个人时,不包括加密视频的所捕获的视频。

    Program conversion device, and secret keeping program
    116.
    发明申请
    Program conversion device, and secret keeping program 审中-公开
    程序转换装置,秘密保存程序

    公开(公告)号:US20090217008A1

    公开(公告)日:2009-08-27

    申请号:US11918785

    申请日:2006-04-21

    IPC分类号: G06F9/302 G06F9/30

    摘要: Provided is a program conversion apparatus for generating a secret holding program, which disables a malicious analyzer from analyzing the an original program easily.The program conversion apparatus generates a first instruction group for acquiring values to assign to selection parameters; a second instruction group that includes an instruction group for acquiring, based on an arithmetic expression that uses the selection parameters, a selection identifier showing a selection-target data piece to be processed next; a third instruction group for updates a value of each selection parameter so as to reflect one of (a) a selection identifier showing one of the selection-target data pieces that has already been processed, and (b) at least one of one or more values that have already been assigned to the selection parameters; and selection-target data pieces that, by processing in a predetermined order, output an execution result identical to a result of the original program, each of the selection-target data pieces being in correspondence with a different selection identifier. The program conversion apparatus generates the secret holding program so as to include the first instruction group, the second instruction group, the third instruction group and the selection-target data pieces.

    摘要翻译: 提供了一种用于生成秘密保持程序的程序转换装置,其禁止恶意分析器容易地分析原始程序。 程序转换装置生成用于获取分配给选择参数的值的第一指令组; 第二指令组,其包括用于基于使用所述选择参数的算术表达式获取示出接下来要处理的选择目标数据块的选择标识符的指令组; 第三指令组,用于更新每个选择参数的值,以便反映(a)表示已经被处理的选择目标数据段之一的选择标识符之一,以及(b)一个或多个 已经分配给选择参数的值; 以及选择目标数据,通过按预定顺序处理,输出与原始程序的结果相同的执行结果,每个选择对象数据段与不同的选择标识符相对应。 程序转换装置生成秘密保持程序,以包括第一指令组,第二指令组,第三指令组和选择目标数据。

    Encryption device a decrypting device a secret key generation device a copyright protection system and a cipher communication device
    117.
    发明授权
    Encryption device a decrypting device a secret key generation device a copyright protection system and a cipher communication device 失效
    加密装置,解密装置,密钥生成装置,版权保护系统和密码通信装置

    公开(公告)号:US07542568B2

    公开(公告)日:2009-06-02

    申请号:US10490346

    申请日:2002-09-11

    IPC分类号: H04N7/167

    摘要: An encryption device, a decrypting device, a secret key generation device, a copyright protection system and a cipher communication device including: a CRL memory unit memorizing a CRL, a device key ring memory unit memorizing a specific device key KD_A in every IC card used in a decrypting device, a content key memory unit memorizing a content key Kc, which is a secret key for decrypting content, and a hashing function processing unit calculating a hashing value of the CRL memorized in the CRL memory unit. The devices further including an Ex-OR unit carrying out an exclusive OR between the hashing value and the device key KD_A memorized in the device key ring memory unit, and an Enc unit encrypting the content key Kc memorized in the content key memory unit using an output value of an Ex-OR unit.

    摘要翻译: 一种加密装置,解密装置,秘密密钥生成装置,版权保护系统和密码通信装置,包括:CRL存储单元,存储CRL;存储每个使用的IC卡中的特定设备密钥KD_A的设备密钥存储单元; 在解密装置中,存储作为用于解密内容的秘密密钥的内容密​​钥Kc的内容密钥存储单元和计算存储在CRL存储单元中的CRL的散列值的散列函数处理单元。 所述设备还包括执行散列值和存储在设备密钥环存储器单元中的设备密钥KD_A之间的异或的Ex-OR单元,以及Enc装置,用于使用存储在内容密钥存储单元中的内容密钥存储单元 Ex-OR单元的输出值。

    SIGNATURE GENERATING DEVICE, SIGNATURE GENERATING METHOD AND SIGNATURE GENERATING PROGRAM
    118.
    发明申请
    SIGNATURE GENERATING DEVICE, SIGNATURE GENERATING METHOD AND SIGNATURE GENERATING PROGRAM 有权
    签名生成设备,签名生成方法和签名生成程序

    公开(公告)号:US20090094464A1

    公开(公告)日:2009-04-09

    申请号:US12158033

    申请日:2006-12-26

    IPC分类号: H04L9/06 H04L9/28

    摘要: A signature generation apparatus is capable of making a value used in signature generation processing difficult to analyze. In the signature generation apparatus, a random number generation module generates a len-bit random number u, a selection module converts the generated random number u into a bit expression, and acquires element pairs corresponding to the bit values from a table memory unit. A random element generation module applies a basic operation of a first group G and a second group to all acquired element pairs, and calculates an element Pk on the first group G and an element Pak on the second group Ga. The signature generation apparatus generates a digital signature S for a message m with use of a transformation module, a main operation module, an inverse transformation module, a multiplication module, a division module, and a signature data generation module.

    摘要翻译: 签名生成装置能够使签名生成处理中使用的值难以分析。 在签名生成装置中,随机数生成模块生成len位随机数u,选择模块将生成的随机数u转换为比特表达式,并从表存储单元获取与比特值对应的元素对。 随机元素生成模块将第一组G和第二组的基本操作应用于所有获取的元素对,并且计算第一组G上的元素Pk和第二组Ga上的元素Pak,签名生成装置生成 使用变换模块的消息m的数字签名S,主操作模块,逆变换模块,乘法模块,分割模块和签名数据生成模块。

    Signature Generation Device and Signature Verification Device
    119.
    发明申请
    Signature Generation Device and Signature Verification Device 有权
    签名生成装置和签名验证装置

    公开(公告)号:US20080222418A1

    公开(公告)日:2008-09-11

    申请号:US11795871

    申请日:2006-01-17

    摘要: A signature generation apparatus capable of preventing transcript attack on signature data is provided. The signature generation apparatus performing a digital signature operation with the use of a signature key: stores the signature key; performs the digital signature operation on signature target data with the use of the signature key to generate signature data; counts the cumulative count of digital signature operations having been performed by the signature generation unit with the use of the signature key; judges whether the cumulative count has reached a predetermined count; and inhibits the use of the signature key in the digital signature operation from then onward in a case where the judgment unit determines that the cumulative count has reached the predetermined count.

    摘要翻译: 提供了能够防止对签名数据进行转录攻击的签名生成装置。 签名生成装置使用签名密钥执行数字签名操作;存储签名密钥; 使用签名密钥对签名目标数据执行数字签名操作,生成签名数据; 使用签名密钥对由签名生成单元执行的数字签名操作的累积计数进行计数; 判断累积计数是否达到预定计数; 并且在判断单元确定累积计数已达到预定计数的情况下,禁止在数字签名操作中使用签名密钥。

    Recorder
    120.
    发明申请
    Recorder 审中-公开
    录音机

    公开(公告)号:US20070263514A1

    公开(公告)日:2007-11-15

    申请号:US11658668

    申请日:2005-08-29

    IPC分类号: G11B3/64

    摘要: A recording apparatus for copying a digital stream recorded on a first recording medium using a code format compatible with the first recording medium to a second recording medium after the digital stream has been converted to a code format compatible with the second recording medium, comprising: a detection unit operable to detect a plurality of devices that are available for distributed processing from devices connected to the recording apparatus via a network; an allocation unit operable to divide the digital stream at one or more predetermined points on a playback time axis and to allocate the divided portions to the detected devices respectively; a transmission unit operable to transmit the allocated portions to the respective detected devices; a control unit operable to control the detected devices to perform transcoding for converting a code format of the allocated portions to the code format compatible with the second recording device; and a writing unit operable to receive converted portions resulting from the transcoding from the detected devices and to write the received portions to the second recording medium.

    摘要翻译: 一种记录装置,用于在将数字流转换成与第二记录介质兼容的代码格式之后,使用与第一记录介质兼容的代码格式将记录在第一记录介质上的数字流复制到第二记录介质,该记录装置包括: 检测单元,用于经由网络从连接到记录装置的设备检测可用于分布式处理的多个设备; 分配单元,其可操作以在重放时间轴上的一个或多个预定点处划分数字流,并将分割的部分分别分配给检测到的设备; 发送单元,用于将分配的部分发送到各个检测到的设备; 控制单元,用于控制所检测的设备执行代码转换,以将所分配的部分的代码格式转换成与第二记录设备兼容的代码格式; 以及写入单元,用于从所检测的设备接收由代码转换产生的转换部分,并将所接收的部分写入第二记录介质。