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公开(公告)号：EP2963876A4
公开(公告)日：2016-10-05
申请号：EP13876245
申请日：2013-11-14
IPC分类号： H04L29/06 , H04L9/32 , H04L12/64 , H04L12/823 , H04L29/08
CPC分类号： H04L69/324 , H04L12/6418 , H04L47/32 , H04L63/1466 , H04L69/22 , H04L2463/121
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公开(公告)号：EP3185462A4
公开(公告)日：2018-08-01
申请号：EP16833401
申请日：2016-07-26
CPC分类号： H04L9/0631 , G06F7/76 , G06F9/30101 , H04L9/06 , H04L2209/12
摘要： The invention relates to the field of computer engineering and cryptography and, in particular, to methods for implementing linear transformations which operate with a specified speed and require minimum amount of memory, for further usage in devices for cryptographic protection of data. The technical result relates to enabling to select inter-related parameters (performance and required amount of memory) for a particular computing system when implementing a high-dimensional linear transformation. The use of the present method allows to reduce the amount of consumed memory at a given word size of processors employed. To this end, based on a specified linear transformation, a modified linear shift register of Galois-type or Fibonacci-type is generated according to the rules provided in the disclosed method, and the usage thereof enables to obtain the indicated technical result.
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3.发明公开METHOD FOR PREVENTING REPEATED USE OF DIGITAL PACKET DATA 审中-公开VERFAHREN ZUR VERHINDERUNG EINER MEHRFACHVERWENDUNG VON DIGITALEN PAKETDATEN
公开(公告)号：EP2963876A1
公开(公告)日：2016-01-06
申请号：EP13876245.5
申请日：2013-11-14
IPC分类号： H04L12/823
CPC分类号： H04L69/324 , H04L12/6418 , H04L47/32 , H04L63/1466 , H04L69/22 , H04L2463/121
摘要： A method of preventing reuse of digital data packets in a network data transmission system, the method being executed by a system including computers connected via the network data transmission system, the computers sending and receiving messages as a sequence of digital data packets, the method comprising: generating payload data and metadata for each packet to be sent, as well as data for checking integrity of the metadata, the metadata including a serial number of the packet, a sending time of the data packet; sending the packet over the data transmission network; specifying an allowable value of a mismatch time interval; providing, in memory, areas to store a sending time of a last received packet, a serial number of the last received packet, a list of serial numbers of previously received packets; receiving the packet including the payload data and the metadata; checking for reuse of the received packet by checking whether the sending time of the received packer is outside the mismatch time interval and whether the number of the received packet matches the number of the last received packet or numbers in the list of serial numbers of previously received packets; and, based on results of the check, accepting or discarding the packet.
摘要翻译： 一种防止数字数据分组在网络数据传输系统中重用的方法，该方法由包括经由网络数据传输系统连接的计算机的系统执行，计算机发送和接收消息作为一系列数字数据分组，该方法包括： ：为要发送的每个分组生成有效载荷数据和元数据，以及用于检查元数据的完整性的数据，所述元数据包括分组的序列号，数据分组的发送时间; 通过数据传输网络发送数据包; 指定不匹配时间间隔的允许值; 在存储器中提供存储最后接收的分组的发送时间的区域，最后接收的分组的序列号，先前接收的分组的序列号的列表; 接收包含有效载荷数据和元数据的分组; 通过检查接收到的封隔器的发送时间是否在不匹配时间间隔之外，以及接收到的数据包的数量是否与先前接收到的序列号的列表中的最后接收的数据包的数量匹配，来检查接收的分组的重用 包; 并且基于检查的结果，接收或丢弃该分组。
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公开(公告)号：EP3934158A1
公开(公告)日：2022-01-05
申请号：EP20875642.9
申请日：2020-01-16
IPC分类号： H04L9/08
摘要： The present invention relates to systems for cryptographic protection of information which use keys derived from quantum keys from an associated quantum key distribution (QKD) system, in order to improve security of transmitted information. A system comprises a transmitting node and a receiving node of a single-pass QKD system, and two encryptors connected by a classical communication channel. The one encryptor is further connected to the transmitting node of the QKD system by a 1st local communication link, and the other encryptor is connected to the receiving node of the QKD system by a 2nd local communication link.
A method comprises: generating encryption keys and authentication keys based on quantum keys of a size not less than the one specified in operation of the system; exchanging service data in course of execution of the quantum protocol using the encryption keys and authentication keys, and providing identity of the encryption keys and the authentication keys.
The technical result refers to:
1) enhanced security of user data being transmitted;
2) enhanced robustness of the system;
3) reduced cost of manufacturing, deploying, and operating the system by reducing the number of classic communication links;
4) improved strength of quantum keys.-
公开(公告)号：EP3185462B1
公开(公告)日：2019-07-03
申请号：EP16833401.9
申请日：2016-07-26
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公开(公告)号：EP3185462A1
公开(公告)日：2017-06-28
申请号：EP16833401.9
申请日：2016-07-26
CPC分类号： H04L9/0631 , G06F7/76 , G06F9/30101 , H04L9/06 , H04L2209/12
摘要： The invention relates to the field of computer engineering and cryptography and, in particular, to methods for implementing linear transformations which operate with a specified speed and require minimum amount of memory, for further usage in devices for cryptographic protection of data.
The technical result relates to enabling to select inter-related parameters (performance and required amount of memory) for a particular computing system when implementing a high-dimensional linear transformation.
The use of the present method allows to reduce the amount of consumed memory at a given word size of processors employed.
To this end, based on a specified linear transformation, a modified linear shift register of Galois-type or Fibonacci-type is generated according to the rules provided in the disclosed method, and the usage thereof enables to obtain the indicated technical result.摘要翻译： 本发明涉及计算机工程和密码学领域，并且特别涉及用于实现线性变换的方法，所述线性变换以指定的速度运行并且需要最小量的存储器，用于设备中用于数据的密码保护的进一步使用。 技术结果涉及在实现高维线性变换时能够为特定计算系统选择相关参数（性能和所需的存储量）。 本方法的使用允许在所使用的处理器的给定字长下减少消耗的存储量。 为此，基于指定的线性变换，根据所公开的方法中提供的规则生成伽罗瓦型或斐波那契型的修改的线性移位寄存器，并且其用途能够获得指示的技术结果。
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