VERFAHREN ZUR BEREITSTELLUNG VON KRYPTOGRAFISCHEN SCHLÜSSELPAAREN
    12.
    发明公开

    公开(公告)号:EP2409452A2

    公开(公告)日:2012-01-25

    申请号:EP10707012.0

    申请日:2010-03-04

    IPC分类号: H04L9/08

    摘要: The invention relates to a method for creating a second asymmetric cryptographic pair of keys (206), wherein a first private key (G
    0 , 154) together with a first public key (O
    0 , 126) forms a first asymmetric cryptographic pair of keys (K
    0 , 218), wherein the method comprises the following steps: receiving a user identifier; calculating a second private key (G
    1 ), wherein a random value (z) and the user identifier are considered in the calculation; calculating a second public key (O
    1 ) from the second private key using an asymmetric cryptographic key creation method, wherein the second private key and the second public key form the second asymmetric cryptographic pair of keys (K
    1 , 206); creating a first ciphertext (C_G
    0 _O
    1 , 212; 186) by encrypting the first private key (G
    0 ) with the second public key (O
    1 ); storing the first ciphertext (C_G
    0 _O
    1 , 212; 186).

    COMPUTER SYSTEM FOR STORING AND RETRIEVAL OF ENCRYPTED DATA ITEMS USING A TABLET COMPUTER AND COMPUTER-IMPLEMENTED METHOD
    14.
    发明公开
    COMPUTER SYSTEM FOR STORING AND RETRIEVAL OF ENCRYPTED DATA ITEMS USING A TABLET COMPUTER AND COMPUTER-IMPLEMENTED METHOD 有权
    计算机系统与平板电脑和计算机实现的方法存储,并要求加密的数据元素

    公开(公告)号:EP2920733A1

    公开(公告)日:2015-09-23

    申请号:EP13802897.2

    申请日:2013-11-14

    摘要: The present invention relates to a computer system comprising: - multiple sets (S1, S2,...,Si,...,SI-1, SI) of client computers (Ci1, Ci2,...,Cij,...CiJ), each client computer having installed thereon an application program (104), the application program comprising client computer specific log-in information (Lij), - a database system (1,12) being coupled to the set of client computers via a network (114), the database system having a log-in component (118) for logging-in the client computers, the database system being partitioned into multiple relational databases (DB1, DB2,... DBi,...DBI), each one of the databases being assigned to one set of the sets of client computers, each database storing encrypted data items, each data item being encrypted with one of the user or user-group specific cryptographic keys, the key identifier of the cryptographic key with which one of the data items is encrypted being stored in the database as an attribute of the one of the encrypted data items, the log-in component comprising assignment information (118) indicative of the assignment of the databases to the set of client computers.

    摘要翻译: 本发明涉及一种计算机系统,包括: - 多组(S1,S2,...,硅,...,SI-1,SI)的客户端计算机(α1,CI2,...的,C IJ,.. .CiJ),具有安装在每个客户端计算机在其上以应用程序(104),所述应用程序包括客户计算机专用的登录信息(LIJ) - 一个数据库系统(1.12)被耦合到经由所述一组客户端计算机的 一个网络(114),具有用于登录部件(118)的数据库系统测井在客户端计算机,数据库系统被划分成多个关系数据库(DB1,DB2,... DB I ... DBI) 中,数据库中的每一个被分配给一个组的组的客户端计算机中的,每一个数据库存储加密的数据项,每个数据项与所述用户或用户组特定的密码密钥中的一个,所述加密密钥的密钥标识符加密 与该dataItems之一被加密被存储在作为属性加密的数据项中的所述一个,理论值的数据库 ê登录在组分,其包含分配信息(118)指示所述数据库到设定客户端计算机的分配的。

    Computer system for storing and retrieval of encrypted data items using a tablet computer and computer-implemented method
    18.
    发明公开
    Computer system for storing and retrieval of encrypted data items using a tablet computer and computer-implemented method 有权
    用于存储和加密的数据项的检索与平板计算机和计算机实现的方法的计算机系统

    公开(公告)号:EP2731042A1

    公开(公告)日:2014-05-14

    申请号:EP12192607.5

    申请日:2012-11-14

    IPC分类号: G06F21/34 G06F21/62

    摘要: The present invention relates to a computer system comprising:
    - multiple sets (S1, S2,...,Si,...,Sl-1, Sl) of client computers (Ci1, Ci2,...,Cij,...CiJ), each client computer having installed thereon an application program (104), the application program comprising client computer specific log-in information (Lij),
    - a database system (112) being coupled to the set of client computers via a network (114), the database system having a log-in component (118) for logging-in the client computers, the database system being partitioned into multiple relational databases (DB1, DB2, ...DBi,...DBI), each one of the databases being assigned to one set of the sets of client computers, each database storing encrypted data items, each data item being encrypted with one of the user or user-group specific cryptographic keys, the key identifier of the cryptographic key with which one of the data items is encrypted being stored in the database as an attribute of the one of the encrypted data items, the log-in component comprising assignment information (118) indicative of the assignment of the databases to the set of client computers.

    摘要翻译: 本发明涉及一种计算机系统,包括: - 多组(S1,S2,...,硅,...,S1,S)的客户端计算机(α1,CI2,...的,C IJ,.. .CiJ),具有安装在每个客户端计算机在其上,所述应用程序包括客户计算机专用的登录信息(LIJ)应用程序(104) - 在数据库系统(112),经由网络被耦合到该组的客户端计算机的 (114),具有用于登录部件(118)的数据库系统测井在客户端计算机,数据库系统被划分成多个关系数据库(DB1,DB2,... DB I ... DBI),每个 数据库中的一个被分配给一个组的组的客户端计算机中的,每一个数据库存储加密的数据项,每个数据项与所述用户或用户组特定的密码密钥中的一个,利用该加密密钥的密钥标识符加密 所述dataItems之一被加密被存储在作为属性加密的数据项中的一个的,在该数据库 登录在组分,其包含分配信息(118)指示所述数据库到设定客户端计算机的分配的。

    Client computer for querying a database stored on a server via a network
    19.
    发明公开
    Client computer for querying a database stored on a server via a network 审中-公开
    客户端计算机检索在网络存储服务器上的数据库

    公开(公告)号:EP2731034A2

    公开(公告)日:2014-05-14

    申请号:EP13186330.0

    申请日:2013-09-27

    IPC分类号: G06F19/00

    摘要: The invention relates to a client computer (10) for querying a database stored on a server (22) via a network (48), the server (22) being coupled to the client computer (10) via the network (48), wherein the database comprises a set of first relations (32; 34; 36), wherein each first relation (32; 34; 36) in the set of the first relations (32; 34; 36) comprises first data items, wherein for each first relation (32; 34; 36) the first data items are encrypted with a respective first cryptographic key (18) in the first relation, wherein the first data items form a partially ordered set in each first relation, in each first relation (32; 34; 36) the partial order being formed with respect to the first data items of said first relation (32; 34; 36) in non-encrypted form.

    摘要翻译: 本发明涉及在客户端计算机(10),用于通过时,服务器(22)被耦合到经由网络的客户端计算机(10)(48)的网络(48),worin查询存储的服务器(22)上的数据库 所述数据库包括一组第一关系的每个包括第一第一数据项,worin(32; 34; 36),worin每个第一关系式(32; 36; 34)在所述组中的第一关系(36 32; 34) 关系式(32; 34; 36)的第一个数据项进行加密,在所述第一关系的respectivement第一密钥(18),worin第一数据项形成部分中的每个第一关系有序集,(在每种第一关系32; 34;在非加密形式36); 36)的部分顺序形成相对于所述第一关系(32的第一数据项; 34。