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Protection of data delivered out-of-order

A technology of ordered data and data, applied in the direction of data exchange network, digital transmission system, electrical components, etc., can solve problems such as device incompatibility

Active Publication Date: 2008-03-26
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, AH and ESP are not compatible with devices such as middleboxes
SCTP-associated data security can also be achieved by utilizing the Transport Layer Security (TLS) protocol [6] at the transport layer, but only for ordered delivery

Method used

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  • Protection of data delivered out-of-order
  • Protection of data delivered out-of-order
  • Protection of data delivered out-of-order

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0043] Throughout the figures, the same reference numerals will be used to designate corresponding or analogous elements.

[0044] It is more useful to start from the problem analysis in the specific example content. SCTP associations exploiting the disordered delivery feature can be protected with AH and ESP. However, AH and ESP are not compatible with devices such as middleboxes (e.g., middleboxes that do TCP performance optimization, header compression, application gateway settings, firewall settings, NAT settings, etc.), because these middleboxes may need to access or even manipulate transport masthead. Accordingly, the present inventors realized that there is a need for a way of addressing the security of data utilizing the out-of-order delivery feature of protocols such as SCTP at the transport layer.

[0045]TLS is an example security protocol that operates on the transport layer. TLS was originally designed to protect data over TCP connections. TLS divides a data s...

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PUM

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Abstract

A basic idea of this system is to separate ordered delivery data and unordered delivery data in a security protocol running on top of a reliable transport protocol, and perform a first type of security processing for ordered delivery data and a second different type of security processing for unordered delivery data in the security protocol. Preferably, data messages using ordered delivery and data messages using unordered delivery within a secure data stream are separated into two message sequence spaces on the security protocol layer, and data security processing is then performed differently in these two spaces. This system is particularly suitable for a reliable transport protocol such as SCTP (Stream Control Transmission Protocol). The security protocol running on top of the transport protocol is preferably based on the TLS (Transport Layer Security) or a TLS-like protocol with a security processing extension for unordered delivery.

Description

technical field [0001] The present invention relates generally to the security aspects of reliable transport protocols and, in particular, to the protection of out-of-order delivery of data. Background technique [0002] In general, the present invention relates to reliable transport protocols that support both in-order and out-of-order data delivery. The Stream Control Transport Protocol (SCTP) [1] is an example of such a transport protocol developed in the SIGTRAN working group of the IETF. It was originally designed to carry PSTN telephony signaling messages. However, because it has several useful features not found in TCP, it is now considered a general transport protocol and a replacement for TCP. [0003] Typically, within an SCTP stream, data messages are delivered in sequence according to their stream sequence numbers. If a data message arrives at the receiving endpoint out-of-order (i.e., ahead of time), then it must be retained from delivery to the upper layer u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L12/56
CPCH04L63/166H04L69/165H04L69/16H04L69/163H04L29/06095H04L29/06088H04L69/14H04L63/0428H04L47/10H04L29/06129H04L29/06115
Inventor T·-W·陈K·诺曼
Owner TELEFON AB LM ERICSSON (PUBL)