Security system using RSA algorithm and method thereof
    1.
    发明授权
    Security system using RSA algorithm and method thereof 有权
    使用RSA算法的安全系统及其方法

    公开(公告)号:US07421074B2

    公开(公告)日:2008-09-02

    申请号:US10959993

    申请日:2004-10-08

    IPC分类号: H04L9/30

    摘要: A security system using an RSA algorithm that includes a key input section for receiving a secret key and a public key used in one of encryption and decryption of a message, a random coefficient generating section for generating a random coefficient r having a bit of a predetermined size, a first calculation section for dividing the secret key into a first secret key and a second secret key by using the value of r, and performing an exponentiation of RSA algorithm by using the respective secret keys and the public key, and a second calculation section for performing one of the encryption and the decryption by combining results of exponentiation calculated respectively by using the first and the second secret keys.

    摘要翻译: 一种使用RSA算法的安全系统,包括用于接收秘密密钥的密钥输入部分和用于消息的加密和解密之一的公开密钥;随机系数产生部分,用于生成具有预定 大小,第一计算部分,用于通过使用r的值将秘密密钥分解成第一秘密密钥和第二秘密密钥,并且通过使用相应的密钥和公钥来执行RSA算法的乘幂,以及第二计算 部分,用于通过组合通过使用第一和第二秘密密钥分别计算的求幂的结果来执行加密和解密之一。

    Device authentication method using broadcast encryption (BE)
    2.
    发明申请
    Device authentication method using broadcast encryption (BE) 审中-公开
    使用广播加密(BE)的设备认证方法

    公开(公告)号:US20080010242A1

    公开(公告)日:2008-01-10

    申请号:US11651596

    申请日:2007-01-10

    IPC分类号: G06F17/30

    摘要: A device authentication method using broadcast encryption is provided, in which, a hash value corresponding to a group key version is generated, the generated hash value is encrypted with a group key, group key information comprising the encrypted hash value is generated, and the generated group key information including a signature of an authentication server for the group key information is transmitted. Accordingly, mutual authentication is accomplished by using the group key version including in the group key information.

    摘要翻译: 提供一种使用广播加密的设备认证方法,其中生成与组密钥版本对应的散列值,生成的散列值用组密钥加密,生成包括加密散列值的组密钥信息,生成 发送包括组密钥信息的认证服务器的签名的组密钥信息。 因此,通过使用包括组密钥信息中的组密钥版本来实现相互认证。

    User key allocation method for broadcast encryption
    3.
    发明授权
    User key allocation method for broadcast encryption 失效
    广播加密的用户密钥分配方法

    公开(公告)号:US08515074B2

    公开(公告)日:2013-08-20

    申请号:US11648608

    申请日:2007-01-03

    IPC分类号: H04L9/00

    摘要: A user key allocation method for broadcast encryption is provided. The user key allocation method includes generating a plurality of subsets by dividing one group including a plurality of nodes to sub-groups and allocating key sets with respect to the subsets, respectively. The nodes included in the subset may be odd nodes and even nodes of the nodes of the group. The nodes are arranged so that privileged nodes are consecutive or there is only one privileged node. Accordingly, it is possible to reduce the data size transmitted from the server to the nodes by constituting one or more subsets from the nodes consecutively arranged and providing key sets with respect to the subsets.

    摘要翻译: 提供用于广播加密的用户密钥分配方法。 用户密钥分配方法包括通过将包括多个节点的一个组划分成子组并且分别相对于子集分配密钥集来生成多个子集。 包括在子集中的节点可以是组的节点的奇数节点和偶数节点。 这些节点被布置成使得特权节点是连续的,或者只有一个特权节点。 因此,通过从连续排列的节点构成一个或多个子集,并且相对于子集提供密钥集,可以减少从服务器发送到节点的数据大小。

    User key allocation method for broadcast encryption
    4.
    发明申请
    User key allocation method for broadcast encryption 失效
    广播加密的用户密钥分配方法

    公开(公告)号:US20070291948A1

    公开(公告)日:2007-12-20

    申请号:US11648608

    申请日:2007-01-03

    IPC分类号: H04L9/00

    摘要: A user key allocation method for broadcast encryption is provided. The user key allocation method includes generating a plurality of subsets by dividing one group including a plurality of nodes to sub-groups and allocating key sets with respect to the subsets, respectively. The nodes included in the subset may be odd nodes and even nodes of the nodes of the group. The nodes are arranged so that privileged nodes are consecutive or there is only one privileged node. Accordingly, it is possible to reduce the data size transmitted from the server to the nodes by constituting one or more subsets from the nodes consecutively arranged and providing key sets with respect to the subsets.

    摘要翻译: 提供用于广播加密的用户密钥分配方法。 用户密钥分配方法包括通过将包括多个节点的一个组划分成子组并且分别相对于子集分配密钥集来生成多个子集。 包括在子集中的节点可以是组的节点的奇数节点和偶数节点。 这些节点被布置成使得特权节点是连续的,或者只有一个特权节点。 因此,通过从连续排列的节点构成一个或多个子集,并且相对于子集提供密钥集,可以减少从服务器发送到节点的数据大小。

    Security device for digital contents and method of using the same
    5.
    发明申请
    Security device for digital contents and method of using the same 审中-公开
    数字内容安全装置及其使用方法

    公开(公告)号:US20070232269A1

    公开(公告)日:2007-10-04

    申请号:US11585865

    申请日:2006-10-25

    IPC分类号: H04M1/66

    摘要: An improved security device for digital contents and a method for using the security device are provided. The improved security device and method include a transmission and reception unit for transmitting and receiving data necessary for authentication with a mobile device, and for transmitting and receiving contents of the mobile device and a controller for performing authentication with the mobile device, and for decrypting re-encrypted contents from the mobile device when the authentication is successful. The improved method and device provide enhance mobility for users.

    摘要翻译: 提供了一种用于数字内容的改进的安全装置和用于使用该安全装置的方法。 改进的安全装置和方法包括用于发送和接收与移动装置进行认证所需的数据的发送和接收单元,以及用于发送和接收移动装置的内容和用于执行与移动装置的认证的控制器,以及用于解密re 当认证成功时,来自移动设备的加密内容。 改进的方法和设备提供增强用户的移动性。

    Security system using RSA algorithm and method thereof
    6.
    发明申请
    Security system using RSA algorithm and method thereof 有权
    使用RSA算法的安全系统及其方法

    公开(公告)号:US20050078821A1

    公开(公告)日:2005-04-14

    申请号:US10959993

    申请日:2004-10-08

    摘要: A security system using an RSA algorithm that includes a key input section for receiving a secret key and a public key used in one of encryption and decryption of a message, a random coefficient generating section for generating a random coefficient r having a bit of a predetermined size, a first calculation section for dividing the secret key into a first secret key and a second secret key by using the value of r, and performing an exponentiation of RSA algorithm by using the respective secret keys and the public key, and a second calculation section for performing one of the encryption and the decryption by combining results of exponentiation calculated respectively by using the first and the second secret keys.

    摘要翻译: 一种使用RSA算法的安全系统,包括用于接收秘密密钥的密钥输入部分和用于消息的加密和解密之一的公开密钥;随机系数产生部分,用于生成具有预定 大小,第一计算部分,用于通过使用r的值将秘密密钥分解成第一秘密密钥和第二秘密密钥,并且通过使用相应的密钥和公钥来执行RSA算法的乘幂,以及第二计算 部分,用于通过组合通过使用第一和第二秘密密钥分别计算的求幂的结果来执行加密和解密之一。

    Hierarchical threshold tree-based broadcast encryption method
    7.
    发明授权
    Hierarchical threshold tree-based broadcast encryption method 有权
    基于层次阈值树的广播加密方法

    公开(公告)号:US08005225B2

    公开(公告)日:2011-08-23

    申请号:US11340614

    申请日:2006-01-27

    IPC分类号: H04L29/00

    摘要: A hierarchical threshold tree-based broadcast encryption method includes a first step for a server initialization and a user subscription, a second step of distributing a message to enable a privileged user (authorized user) to decrypt a group key, and a third step of the privileged user (authorized user) decrypting the message using the group key. According to the method, it is possible to prevent any group of revocators from obtaining the group key using their secret information and information being broadcast by the server.

    摘要翻译: 基于分层阈值树的广播加密方法包括用于服务器初始化和用户订阅的第一步骤,分发消息以使得特权用户(授权用户)能够解密组密钥的第二步骤,以及第三步骤 特权用户(授权用户)使用组密钥解密消息。 根据该方法,可以防止任何一组撤销者使用其秘密信息和由服务器广播的信息来获得组密钥。

    Radio frequency identification (RFID) tag encryption method and system using broadcast encryption (BE) scheme
    8.
    发明授权
    Radio frequency identification (RFID) tag encryption method and system using broadcast encryption (BE) scheme 有权
    射频识别(RFID)标签加密方法和使用广播加密(BE)方案的系统

    公开(公告)号:US07760096B2

    公开(公告)日:2010-07-20

    申请号:US12498390

    申请日:2009-07-07

    IPC分类号: G08B13/14 H04M1/66

    摘要: A radio frequency identification (RFID) tag encryption method and system using a broadcast encryption (BE) scheme are provided by encrypting an ID of an RFID tag, storing the encrypted ID in a server and the RFID tag, and storing information relating to a reader authorized to read out the RFID tag in the server so that the reader can read out the RFID tag by decrypting the encrypted ID based on the encrypted ID information read from the RFID tag and the reader information. When readers read out ID data from the RFID tag, a privileged reader can read the data. Thus, it is possible to block unintended information leakage to the readers. In addition, user usability can be enhanced since an attacker cannot perform an access lock on the RFID tag.

    摘要翻译: 使用广播加密(BE)方式的射频识别(RFID)标签加密方法和系统通过加密RFID标签的ID,将加密的ID存储在服务器和RFID标签中,并且存储与读取器有关的信息 被授权在服务器中读出RFID标签,以便读取器可以基于从RFID标签读取的加密的ID信息和读取器信息解密加密的ID来读出RFID标签。 当读者从RFID标签读出ID数据时,特权读取器可以读取数据。 因此,有可能将意外的信息泄露给读者。 此外,由于攻击者无法对RFID标签执行访问锁定,因此可以增强用户可用性。

    RFID tag, system for purchasing service by using RFID tag, and method thereof
    9.
    发明授权
    RFID tag, system for purchasing service by using RFID tag, and method thereof 有权
    RFID标签,使用RFID标签购买服务的系统及其方法

    公开(公告)号:US07486171B2

    公开(公告)日:2009-02-03

    申请号:US11353969

    申请日:2006-02-15

    IPC分类号: H04Q5/22

    摘要: An RFID tag used to purchase service related to the RFID tag containing purchase information, a service purchase system using the RFID tag, and a service purchase method thereof. The RFID tag provides content information, right information, and purchase information. Therefore, when purchasing service products such as contents, user convenience can be increased and reliability can be guaranteed.

    摘要翻译: 用于购买与包含购买信息的RFID标签相关的服务的RFID标签,使用RFID标签的服务购买系统及其服务购买方法。 RFID标签提供内容信息,正确信息和购买信息。 因此,在购买内容等服务产品时,可以提高用户的便利性,保证可靠性。

    Combination-based broadcast encryption method
    10.
    发明申请
    Combination-based broadcast encryption method 有权
    基于组合的广播加密方式

    公开(公告)号:US20070140483A1

    公开(公告)日:2007-06-21

    申请号:US11311256

    申请日:2005-12-20

    摘要: A combination-based broadcast encryption method includes: assigning by a server a base group of different combinations to each user; producing and sending secret information for each user by using as a base the base group allocated to each user; producing and sending an inverse-base parameter value through calculations with integers used to produce the base group and key value information of one or more privileged users; and deriving a group key by using the key value information of the privileged users, encrypting a session key by using the derived group key, and sending the encrypted session key to each user. Accordingly, each user is assigned a different base through a combination, thereby having security against collusion attacks.

    摘要翻译: 基于组合的广播加密方法包括:由服务器分配不同组合的基组给每个用户; 通过使用分配给每个用户的基本组作为基础来生成和发送每个用户的秘密信息; 通过用于产生基本组的整数和一个或多个特权用户的键值信息的计算产生和发送反基本参数值; 以及通过使用所述特权用户的密钥值信息来导出组密钥,通过使用导出的组密钥加密会话密钥,以及将加密的会话密钥发送给每个用户。 因此,通过组合为每个用户分配不同的基站,从而具有防止串通攻击的安全性。