Encoder and decoder
    1.
    发明授权
    Encoder and decoder 失效
    编码器和解码器

    公开(公告)号:US5838791A

    公开(公告)日:1998-11-17

    申请号:US512909

    申请日:1995-08-09

    摘要: The present invention was made in order to provide a technology capable of safely ciphering compressed and encoded image data irrespective of lines or media and carrying out a correct decoding operation without any shifts in the frames of ciphered moving pictures. Further, so as to prevent giving any means of encoding from comparison of image ciphered data and so as to generate totally different ciphered image data from the same data compressed images, a processing is executed not on an ECB mode but on such modes as CBC, CFB, OFB or the like. Moreover, as an initial vector, information different for frames included in a header, that is, time information from the start of an image or a frame sequential number, is used. In this way, even if compressed images within adjacent frames are accidentally the same, totally different ciphered data can be obtained.

    摘要翻译: 本发明是为了提供能够安全地加密压缩和编码的图像数据的技术,而不管线路或媒体如何,并且在加密的运动图像的帧中没有任何移位的情况下执行正确的解码操作。 此外,为了防止从图像加密数据的比较中提供编码的任何手段,并且从相同的数据压缩图像生成完全不同的加密图像数据,不是在ECB模式下执行处理,而是在诸如CBC, CFB,OFB等。 此外,作为初始向量,使用了包含在标题中的帧不同的信息,即,从图像开始或帧顺序号的时间信息。 以这种方式,即使相邻帧内的压缩图像意外相同,也可以获得完全不同的加密数据。

    Software charging system and software data utilization permitting device
    2.
    发明授权
    Software charging system and software data utilization permitting device 失效
    软件充电系统和软件数据使用许可设备

    公开(公告)号:US5761651A

    公开(公告)日:1998-06-02

    申请号:US490049

    申请日:1995-06-13

    摘要: A software charging system includes a utilization permitting device for giving permission to use a software storing medium storing ciphered programs or data (software); and an authorization center capable of communicating with the utilization permitting device for setting a utilizable amount, totalling utilization amounts and charging a user. The utilization permitting device includes: a utilization permission processing part having a clock for obtaining date and time data, and having a date and time data storing unit for storing obtained date and time data until obtaining next data and time data; and a utilization amount managing part for calculating a software utilization amount of an end user. A software utilization amount is managed based on the number of days at the utilization permission processing part.

    摘要翻译: 一种软件计费系统包括利用许可装置,用于允许使用存储加密程序或数据(软件)的软件存储介质; 以及能够与利用许可装置进行通信的授权中心,用于设定可利用量,合计使用量和对用户收费。 利用许可装置包括:具有用于获取日期和时间数据的时钟的利用许可处理部分,并具有日期和时间数据存储单元,用于存储获得的日期和时间数据,直到获得下一个数据和时间数据; 以及用于计算最终用户的软件使用量的利用量管理部。 基于利用许可处理部分的天数来管理软件使用量。

    File protection system, software utilization system using the file
protection system and storage medium used in the software utilization
system
    5.
    发明授权
    File protection system, software utilization system using the file protection system and storage medium used in the software utilization system 失效
    文件保护系统,使用软件利用系统中使用的文件保护系统和存储介质的软件利用系统

    公开(公告)号:US5917908A

    公开(公告)日:1999-06-29

    申请号:US623682

    申请日:1996-03-29

    摘要: A file protection system for protecting a file which is stored in a storage unit includes a storage position deciding unit for deciding a positional-information corresponding to an area in which information of the file is stored in the storage unit and an encryption unit for encrypting the information of the file in accordance with a predetermined algorithm using at least a part of the positional-information decided by the storage position deciding unit. Information obtained by the encryption unit is stored in the area identified by the positional-information in the storage unit. A file protection system is operable when information of a file which was encrypted as described above is read out from a storage unit. The file protection system includes a decryption unit for decrypting the encrypted information of the file which is read out from an area in the storage unit using information corresponding the area, an extracting unit for extracting the positional-information from information obtained by the decryption unit, and a determination unit for determining whether or not the positional-information extracted by the extracting unit is equal to corresponding positional-information which is at least a part of the information corresponding to the area from which the encrypted information of the file is read out. When the determination unit determines that two pieces of positional-information are not equal to each other, it is determined that the information obtained by the decryption unit does not include correct information of the file.

    摘要翻译: 用于保护存储在存储单元中的文件的文件保护系统包括:存储位置确定单元,用于确定与存储在存储单元中的文件的信息相对应的区域的位置信息;以及加密单元, 使用由存储位置决定单元决定的位置信息的至少一部分,根据预定算法对文件进行信息。 由加密单元获得的信息被存储在由存储单元中的位置信息识别的区域中。 当从存储单元读出如上所述加密的文件的信息时,文件保护系统可操作。 文件保护系统包括:解密单元,用于使用与该区域对应的信息从存储单元中的区域读出的文件的加密信息解密;提取单元,用于从由解密单元获得的信息中提取位置信息; 以及确定单元,用于确定由提取单元提取的位置信息是否等于对应于与读取文件的加密信息的区域相对应的信息的至少一部分的对应位置信息。 当确定单元确定两个位置信息彼此不相等时,确定由解密单元获得的信息不包括文件的正确信息。

    Modular arithmetic operation system
    6.
    发明授权
    Modular arithmetic operation system 失效
    模块化算术运算系统

    公开(公告)号:US5499299A

    公开(公告)日:1996-03-12

    申请号:US268435

    申请日:1994-06-30

    摘要: A modular arithmetic unit comprises an input register, a multiple computing section, an adder, and a correcting section. There is provided a multiple table in which multiples of a modulo N are stored to correspond with low-order some bits of an input number T in the input register. The low-order some bits of the input number T are used to look up its corresponding multiple of the modulo N in the multiple table. The adder adds the multiple of the modulo N retrieved from the multiple table and the contents of the input register. This addition is performed n times. The contents of the input register are updated with high-order predetermined bits of the sum in the adder each time addition is performed in the adder. The correcting section makes a correction on the result t of addition by the adder after n additions have been performed.

    摘要翻译: 模数运算单元包括输入寄存器,多运算单元,加法器和校正单元。 提供了一个多表,其中存储了模N的倍数以与输入寄存器中的输入号T的低位一些比特相对应。 输入数字T的低位一些位用于查找多表中模N的对应倍数。 加法器将从多表中检索出的模N的倍数和输入寄存器的内容相加。 这个加法执行了n次。 在加法器中每次添加时,在加法器中的和的高位预定位更新输入寄存器的内容。 在执行了n次加法之后,校正部分对加法器的加法结果t进行校正。

    Data processing apparatus
    7.
    发明授权
    Data processing apparatus 失效
    数据处理装置

    公开(公告)号:US5953416A

    公开(公告)日:1999-09-14

    申请号:US825696

    申请日:1997-03-20

    CPC分类号: G06F12/1408

    摘要: A data processing apparatus serves as I/O units coupled to information processes apparatuses such as computers. The data processing apparatus decodes encrypted data and performs processing according to message data. The data processing apparatus includes a data processing circuit performing decoding processing and message processing according to message data, a data buffer accessible from both the data processing circuit and the information processing apparatus, a data buffer monitor circuit monitoring states of read/write of the data to the data buffer, and an access control circuit controlling an access from the information processing apparatus to the data buffer.

    摘要翻译: 数据处理装置用作耦合到诸如计算机的信息处理装置的I / O单元。 数据处理装置对加密数据进行解码,并根据消息数据进行处理。 数据处理装置包括:数据处理电路,根据消息数据执行解码处理和消息处理,数据缓冲器,可从数据处理电路和信息处理装置接收;数据缓冲器监视电路监视数据的读/写的状态 以及控制从信息处理设备到数据缓冲器的访问的访问控制电路。

    Data protection system, data preparation device, and data working device
    8.
    发明授权
    Data protection system, data preparation device, and data working device 失效
    数据保护系统,数据准备装置和数据工作装置

    公开(公告)号:US06829592B1

    公开(公告)日:2004-12-07

    申请号:US09000924

    申请日:1997-12-30

    IPC分类号: G06F1721

    摘要: When a user works data required for allowance for the use thereof, the work processing is carried out by utilizing an exclusive work processing device. Thereafter, only the data of work information indicating what kind of working has been made to the original data (for example, differential static image data indicating a difference between the original static image required for allowance for the use and the static image after having been worked) is stored, whereby the use without permission of the data is prevented.

    摘要翻译: 当用户工作所需的数据用于允许使用时,通过利用排他性处理装置来执行工作处理。 此后,仅仅是指示对原始数据进行什么样的工作的工作信息的数据(例如,指示在使用中允许使用的原始静态图像与被处理后的静态图像之间的差异的差分静态图像数据 ),从而防止数据允许的使用。

    Software license protection via cryptography
    9.
    发明授权
    Software license protection via cryptography 失效
    通过密码学软件许可证保护

    公开(公告)号:US06385726B1

    公开(公告)日:2002-05-07

    申请号:US08825676

    申请日:1997-03-20

    IPC分类号: G06F124

    CPC分类号: H04N21/2541 G06F21/10

    摘要: A contents utilizing management apparatus includes a utilizing condition storing unit for storing a utilizing condition corresponding to a sum of money of purchased authorization of contents, a determination unit, coupled to a plurality of computers in which contents are utilized, for determining, based on the utilizing condition of the contents referring to a utilizing request supplied from one of the plurality of computers, whether the contents can be utilized, and a utilizing permission unit for supplying permission to utilize the contents to the one of the plurality of computers when the determination unit determines that the contents can be utilized.

    摘要翻译: 内容利用管理装置包括:利用条件存储部,存储与内容的购买授权的金额相对应的利用条件;连接到使用内容的多个计算机的判定部,基于 利用所述内容的条件参照从所述多台计算机之一提供的利用请求,所述内容是否可以被利用;以及利用许可单元,用于当所述确定单元向所述多个计算机中的一个计算机提供使用所述内容的许可时 确定可以利用内容。

    Transformation pattern generating device and encryption function device
    10.
    发明授权
    Transformation pattern generating device and encryption function device 失效
    转换模式生成装置和加密功能装置

    公开(公告)号:US5623548A

    公开(公告)日:1997-04-22

    申请号:US370881

    申请日:1995-01-10

    IPC分类号: G09C1/00 H04L9/06 H04L9/00

    摘要: In accordance with the present invention, there is provided a transformation pattern generating mechanism comprising: a key input section for inputting a key for encryption; a transformation pattern generating section for generating a transformation pattern for transformation of input data; and an output section for outputting the generated transformation pattern; wherein, when a number sequence corresponding to a predetermined transformation pattern is input as the key to the key input section, said transformation pattern generating section generates and outputs the predetermined transformation pattern corresponding to the number sequence.

    摘要翻译: 根据本发明,提供了一种转换模式生成机构,包括:输入密钥的密钥输入部分,用于加密; 变换模式生成部,生成用于变换输入数据的变换模式; 以及输出部,用于输出所生成的变换图案; 其中,当将与预定变换图案相对应的数字序列作为键被输入到键输入部分时,所述变换图形生成部分生成并输出与数字序列对应的预定变换图案。