Signature Generation Device and Signature Verification Device
    1.
    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。

    Signature Generation Apparatus and Signature Verification Apparatus
    2.
    发明申请
    Signature Generation Apparatus and Signature Verification Apparatus 有权
    签名生成装置和签名验证装置

    公开(公告)号:US20080282089A1

    公开(公告)日:2008-11-13

    申请号:US11578432

    申请日:2006-03-14

    IPC分类号: H04L9/06

    摘要: A signature generation apparatus and a signature verification apparatus which can prevent the occurrence of norm zero vector forgery attack. The signature generation apparatus (110) includes a signature generation unit (114) which generates signature data (S) for a message (m) using a private key stored in a private key storage unit (112), and converts the format of the signature data (S) so that the first sub-element of the N sub-elements in the signature data (S) indicates 0 without changing the norm of the signature data (S). The signature verification apparatus (120) includes a signature verification unit (124) which judges whether or not the first sub-element of the N sub-elements included in the signature data (S) indicates 0, and determines the signature data (S) as unauthorized data when judging that it is not 0.

    摘要翻译: 签名生成装置和签名验证装置,其能够防止零向量伪造攻击的发生。 签名生成装置(110)具有使用存储在专用密钥存储部(112)中的专用密钥来生成消息(m)的签名数据(S)的签名生成部(114),并将签名的格式 数据(S),使得签名数据(S)中的N个子元素的第一子元素指示0而不改变签名数据(S)的范围。 签名验证装置(120)包括签名验证单元(124),其判断包括在签名数据(S)中的N个子元素的第一子元素是否指示0,并且确定签名数据(S) 作为未经授权的数据,当判断为不为0时。

    Signature generation apparatus and signature verification apparatus
    3.
    发明授权
    Signature generation apparatus and signature verification apparatus 有权
    签名生成装置和签名验证装置

    公开(公告)号:US07739504B2

    公开(公告)日:2010-06-15

    申请号:US11578432

    申请日:2006-03-14

    IPC分类号: H04L9/30

    摘要: A signature generation apparatus and a signature verification apparatus which can prevent the occurrence of norm zero vector forgery attack. The signature generation apparatus (110) includes a signature generation unit (114) which generates signature data (S) for a message (m) using a private key stored in a private key storage unit (112), and converts the format of the signature data (S) so that the first sub-element of the N sub-elements in the signature data (S) indicates 0 without changing the norm of the signature data (S). The signature verification apparatus (120) includes a signature verification unit (124) which judges whether or not the first sub-element of the N sub-elements included in the signature data (S) indicates 0, and determines the signature data (S) as unauthorized data when judging that it is not 0.

    摘要翻译: 签名生成装置和签名验证装置,其能够防止零向量伪造攻击的发生。 签名生成装置(110)具有使用存储在专用密钥存储部(112)中的专用密钥来生成消息(m)的签名数据(S)的签名生成部(114),并将签名的格式 数据(S),使得签名数据(S)中的N个子元素的第一子元素指示0而不改变签名数据(S)的范围。 签名验证装置(120)包括签名验证单元(124),其判断包括在签名数据(S)中的N个子元素的第一子元素是否指示0,并且确定签名数据(S) 作为未经授权的数据,当判断为不为0时。

    COMMUNICATION DEVICE AND COMMUNICATION SYSTEM
    4.
    发明申请
    COMMUNICATION DEVICE AND COMMUNICATION SYSTEM 审中-公开
    通信设备和通信系统

    公开(公告)号:US20090100264A1

    公开(公告)日:2009-04-16

    申请号:US12298579

    申请日:2007-04-23

    IPC分类号: H04L9/32 H04L9/08

    摘要: A communication device is secure against an impersonation attack as well. The communication device secretly communicates, with an external device, target data with use of a key shared with the external device. Without being known to a third party, the communication device generates a key shared with the external device using a scheme of which security is proved. Validity of the external device is determined by authentication with use of a key dependent function that is shared with the external device and is dependent on the shared key. If the external device is determined to be valid, for secretly communicating the target data, verification data for verifying validity of the target data is generated from the target data with use of the key dependent function.

    摘要翻译: 通信设备也是安全的,以防止模拟攻击。 通信设备秘密地使用外部设备共享的密钥与外部设备通信目标数据。 通信设备在不被第三方知道的情况下,使用证明了哪种安全性的方案来生成与外部设备共享的密钥。 外部设备的有效性通过使用与外部设备共享的密钥相关功能的认证来确定,并且取决于共享密钥。 如果外部设备被确定为有效,则秘密地传送目标数据,则使用密钥相关函数从目标数据生成用于验证目标数据的有效性的验证数据。

    Signature generation device and signature verification device
    5.
    发明授权
    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:US07917764B2

    公开(公告)日:2011-03-29

    申请号:US11795871

    申请日:2006-01-17

    IPC分类号: H04L9/00

    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。

    Signature generation device, key generation device, and signature generation method
    7.
    发明授权
    Signature generation device, key generation device, and signature generation method 有权
    签名生成装置,密钥生成装置和签名生成方法

    公开(公告)号:US07664260B2

    公开(公告)日:2010-02-16

    申请号:US11795256

    申请日:2006-01-17

    IPC分类号: H04L9/00 H04L9/30

    摘要: A signature generation apparatus preventing an transcript attack on signature data. The signature generation apparatus for generating signature data for message data (i) acquires, according to a predetermined acquisition method, a private key, which is different from a private key used in a previous digital signature operation, from among a plurality of private keys generated using a key generation method of a signature scheme in which the plurality of private keys correspond to a single public key, and (ii) performs, using the acquired private key, a digital signature operation on the message data according to a signature method of the signature scheme to generate the signature data.

    摘要翻译: 一种防止对签名数据进行转录攻击的签名生成装置。 用于生成消息数据的签名数据的签名生成装置(i)根据预定的获取方法从生成的多个私钥中获取与先前的数字签名操作中使用的私钥不同的私钥 使用其中所述多个私钥对应于单个公钥的签名方案的密钥生成方法,以及(ii)使用所获取的私钥对所述消息数据执行数字签名操作,所述签名方法根据所述签名方法 签名方案来生成签名数据。

    Signature generation apparatus and signature verification apparatus
    8.
    发明申请
    Signature generation apparatus and signature verification apparatus 有权
    签名生成装置和签名验证装置

    公开(公告)号:US20090235078A1

    公开(公告)日:2009-09-17

    申请号:US11578978

    申请日:2006-04-10

    IPC分类号: H04L9/32 H04L9/30 H04L9/14

    CPC分类号: H04L9/3093 H04L9/3255

    摘要: A signature generation apparatus and a signature verification which can surely prevent occurrence of inappropriate signature verification error are providedA signature generation apparatus (110) includes a signature generation unit (114) which calculates a signature vector (s, t) for a message m using a private key, and generates signature data S indicating polynomials sl and sh that can specify the polynomial s and a polynomial th which is a quotient when the polynomial t is divided by q.

    摘要翻译: 一种签名生成装置和可以肯定地防止发生不适当的签名验证错误的签名验证提供了一种签名生成装置(110),包括:签名生成部(114),其使用以下方式计算消息m的签名向量(s,t): 并且生成表示可以指定多项式s的多项式sl和sh的签名数据S,当多项式t除以q时,生成作为商的多项式th。

    Monitoring system, program-executing device, monitoring program, recording medium and integrated circuit
    9.
    发明授权
    Monitoring system, program-executing device, monitoring program, recording medium and integrated circuit 有权
    监控系统,程序执行装置,监控程序,记录介质和集成电路

    公开(公告)号:US08745735B2

    公开(公告)日:2014-06-03

    申请号:US13128080

    申请日:2009-11-20

    IPC分类号: H04L29/06 G06F21/00

    CPC分类号: G06F21/57 G06F21/55

    摘要: To aim to provide a monitoring system and a program execution apparatus that are capable of maintaining the security intensity even in the case where an unauthentic install module is invalidated. Install modules included in an apparatus each monitor an install module, which is a monitoring target indicated by a monitoring pattern included therein, as to whether the install module performs malicious operations. An install module that performs malicious operations is invalidated in accordance with an instruction from an update server. The monitoring patterns are restructured by the update server such that the install modules except the invalidated install module are each monitored by at least another one of the install modules. The restructured monitoring patterns are distributed to the install modules except the invalidated install module.

    摘要翻译: 为了提供即使在不正当的安装模块被无效的情况下也能够保持安全强度的监视系统和程序执行装置。 安装在装置中的模块各自监视作为由其中包含的监视模式指示的监视目标的安装模块,关于该安装模块是否执行恶意操作。 根据更新服务器的指令,执行恶意操作的安装模块无效。 监视模式由更新服务器重构,使得除了无效的安装模块之外的安装模块各自由至少另一个安装模块监视。 重组的监控模式分发到除了无效的安装模块之外的安装模块。

    Signature Generation Device, Key Generation Device, and Signature Generation Method
    10.
    发明申请
    Signature Generation Device, Key Generation Device, and Signature Generation Method 有权
    签名生成装置,密钥生成装置和签名生成方法

    公开(公告)号:US20080089514A1

    公开(公告)日:2008-04-17

    申请号:US11795256

    申请日:2006-01-17

    IPC分类号: H04L9/30

    摘要: There is provided a signature generation apparatus capable of preventing transcript attack on signature data. The signature generation apparatus for generating signature data for message data (i) acquires, according to a predetermined acquisition method, a private key, which is different from a private key used in a previous digital signature operation, from among a plurality of private keys generated using a key generation method of a signature scheme in which the plurality of private keys correspond to a single public key, and (ii) performs, using the acquired private key, a digital signature operation on the message data according to a signature method of the signature scheme to generate the signature data.

    摘要翻译: 提供了能够防止对签名数据的转录攻击的签名生成装置。 用于生成消息数据的签名数据的签名生成装置(i)根据预定的获取方法从生成的多个私钥中获取与先前的数字签名操作中使用的私钥不同的私钥 使用其中所述多个私钥对应于单个公钥的签名方案的密钥生成方法,以及(ii)使用所获取的私钥对所述消息数据执行数字签名操作,所述签名方法根据所述签名方法 签名方案生成签名数据。