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Method and device for establishing session keys

A technology for establishing sessions and keys, which is applied in the field of network communication and can solve the problems of inability to meet security requirements and difficult to track attackers.

Inactive Publication Date: 2015-11-18
COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Finally, denial of service can be distributed simultaneously by exploiting several attackers to saturate targets as quickly as possible and make it difficult to track down attackers
[0015] Thus, although known methods provide alternatives for establishing session keys, due to their shortcomings they do not meet all the security requirements expected for session key establishment protocols

Method used

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  • Method and device for establishing session keys
  • Method and device for establishing session keys
  • Method and device for establishing session keys

Examples

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Embodiment Construction

[0050] Figure 4 One example of a communication infrastructure 100 in which the present invention may be advantageously implemented is illustrated. For the sake of simplicity of description, rather than limitation of the present invention, Figure 4 The examples in . show only a limited number of entities (or nodes) and connections, but those skilled in the art will extend the described principles to multiple and various types of entities and connections (wireless, mobile, ultra-high speed).

[0051] A communication network (100) includes fixed or mobile entities capable of forming a network of objects (102). An entity may have a high resource limit (102-1, 102-n) or a low resource limit (112-1, 112-m).

[0052] Entities with high resource constraints may be wireless sensors or actuators, which have limited computational and / or memory capacity. They can also be active tabs. However, an entity that is not inherently constrained in terms of resources may only be temporarily ...

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Abstract

The present invention relates to a method and a device for establishing a session key between a source entity and a target entity in a communication network comprising a plurality of communicating entities. The method which is based on the use of symmetric cryptographic primitives offers each entity of the session a protection against attacks by denial of service by the establishment of a session in four or five exchanges of messages.

Description

technical field [0001] The present invention relates to the field of network communications, and in particular, to encrypted communications between entities of a network. Background technique [0002] The establishment of a session key between two entities of a communication network is an essential prerequisite for implementing most cryptographic services that aim to provide security for exchanges between these entities. Thus, the protection of exchangeable data against attacks aimed at modifying said data or simply obtaining its information usually relies on symmetric encryption primitives, where entities communicating with each other utilize The same key that receives (decrypts, checks integrity) messages. [0003] The establishment of a session key is a process that intentionally occurs several times during the lifetime of a communicating entity. A new symmetric key must be used for each secure exchange with each new correspondent. These communicators are more numerous...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/08
CPCH04L9/083H04L2209/80H04L63/0442H04L63/061
Inventor A·布代古加N·瓦勒阿A·奥利弗罗C·雅特诺
Owner COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
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