Method and system for guaranteeing SIP communication security

A communication security, NAT-PT technology, applied in the field of ensuring SIP communication security

Active Publication Date: 2010-06-23
NEW FOUNDER HLDG DEV LLC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The present invention provides a method and system for ensuring SIP communication security to solve the problem of SIP message transmission security

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  • Method and system for guaranteeing SIP communication security
  • Method and system for guaranteeing SIP communication security
  • Method and system for guaranteeing SIP communication security

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Embodiment Construction

[0030] In order to improve the security of SIP message transmission, the embodiment of the present invention proposes a method and system for ensuring the security of SIP communication. The main realization principle, the specific implementation process and the corresponding beneficial effects of the embodiment of the present invention will be described below in conjunction with the accompanying drawings. Explain in detail.

[0031] In the embodiment of the present invention, adopt the PGP (Pretty Good Privacy, high-quality confidentiality) policy server that supports dual-stack protocol to be responsible for the distribution of each SIP proxy server and terminal public key of IPv6 and IPv4, each SIP proxy server and terminal pass PGP policy The server can obtain the public key uploaded by other devices to the PGP policy server. The terminal identifies itself as an IPv6 or IPv4 terminal through its own digital signature, and uses different public key segment encryption methods ...

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Abstract

The invention discloses a method and a system for guaranteeing SIP communication security so as to solve the problem of transmission security of SIP messages. The main technical scheme comprises the following steps of: using a PGP policy server supporting a dual stack protocol to distribute public keys to each SIP proxy server and terminal of IPv6 and IPv4; acquiring public keys uploaded to servers from other apparatuses by each proxy server and terminal through the PGP policy server; identifying terminals are either the IPv6 type or the IPv4 type through a digital signature; and replacing corresponding encryption message heads by decrypting the sent SIP messages hop-by-hop by a method of segmentation encryption of different public keys. Through the technical scheme, the method and the system can effectively reduce transmission delay, lighten intermediate-network burden, avoid ways of attacking the SIP messages such as registration, alteration of a message body and the like, and ensure the SIP communication security.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method and system for ensuring SIP communication security. Background technique [0002] Since IPv4 uses 32-bit addresses, the current IP (Internet Protocol, Internet Protocol) address resources are limited and cannot meet the needs of users. Therefore, the Internet Research Organization has released a new host identification method, namely IPv6. IPv6 uses is a 128-bit address. However, it will take a long time to realize the complete migration from IPv4 to IPv6, so IPv6 and IPv4 will coexist for a certain period of time. NAT_PT (Network Address Translate_Protocol Translate, Network Address Translate and Protocol Translate) is a protocol between IPv6 and IPv4 proposed by IETF. The conversion mechanism is used to deal with the incompatibility between IPv4 and IPv6. NAT-PT sets up a gateway between IPv6 and IPv4. The gateway manages an IPv4 and IPv6 address table, and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/32H04L9/30H04L29/08
Inventor 吴佚卓陈实如
Owner NEW FOUNDER HLDG DEV LLC
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