JP2009246988A - Wlan相互接続における識別情報の保護方法 - Google Patents
Wlan相互接続における識別情報の保護方法 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/06—Authentication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0407—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the identity of one or more communicating identities is hidden
- H04L63/0414—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the identity of one or more communicating identities is hidden during transmission, i.e. party's identity is protected against eavesdropping, e.g. by using temporary identifiers, but is known to the other party or parties involved in the communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
- H04L9/0825—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) using asymmetric-key encryption or public key infrastructure [PKI], e.g. key signature or public key certificates
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0891—Revocation or update of secret information, e.g. encryption key update or rekeying
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
- H04L9/3271—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using challenge-response
- H04L9/3273—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using challenge-response for mutual authentication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/02—Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
- H04L2209/80—Wireless
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
Abstract
【解決手段】階層的暗号化方式及び非対称暗号化の使用の導入によって、無許可のエンティティからメッセージ交換における重要な情報を隠す。また、一般的な規則をWLANに特有のコマンドにマッピングすることが可能なルール・インタープリタを有するネットワーク構造を導入することでアクセス・コントロールを行う。これによって、モバイルのユーザのホーム・ネットワークが相互接続しているWLANすべてに関する情報を理解する必要がなくなる。また、すべてのWLANに対して、ホーム・ネットワークがWLAN技術と無関係の共通のインターフェイスを使用することが可能となる。
【選択図】図1
Description
WLANと他のネットワークとの間の相互接続のためには、認証、許可、課金(Authentication, Authorization, and Accounting:以下AAAと略す)、QoSの提供、移動性の制御など、いくつかの大きな問題を解決する必要がある。それらの問題の大部分は、例えば、許可/参加の制御、QoSや移動性の機能の展開など、ポリシーに基づく解決策が望まれるものである。
相互接続では、時折、WLANがユーザ加入者情報に基づく決定(例えば、承認コントロール)を行う必要がある。この情報は、ユーザのホーム・ドメインに格納され、一般に共有されることは許されないので、WLANは決定を下すためにホーム・ドメイン・サーバ(104)に依存しなければならない。しかし、ホーム・ドメインが、相互接続する異なるWLANで使用される技術に関して、必ずしも詳細な知識を持つとは限らないので、ホーム・ドメイン・サーバ(104)は、WLAN内のリソース管理エンティティに対して正確な指示を与えることは不可能である。さらに、いくつかの適用(例えば、承認コントロール)では、ローカル・ネットワーク情報を必要とし、ホーム・ドメインにおける決定を妨げられる。
ADD;
SUB;
MUL;
DIV;
AND;
OR;
EQUAL;
CONDITION;
NEGOTIATE;
ACCEPT;
REJECT;
STOP;
RELOAD;
}
MaxBandwidth;
MinBandwidth;
AverageBandwidth;
MaxDelay;
MaxJitter;
MaxPktSize
Burst;
Filter;
Meter;
Marker;
Dropper;
StartTime;
StopTime;
}
Example_QoS_format::={Operation、AVERAGEBANDWIDTH、BANDWIDTH_VAR(TIME_PERIOD})
Example_QoS_format_definition::={
OPERATION::=OPERATION;
AVERAGEBANDWIDTH::=AverageBandwidth;
BANDWIDTH_VAR::=MaxBandwidth SUB MinBandwidth;
TIME_PERIOD::=StartTime SUB StopTime;
}
Example_QoS_rule::=[ALLOW;10MBps、100Kbps、5hour}
OriginalAddress;
CurrentAddress;
HomeAgentAddress;
LocalAgentAddress;
NextAgentAddress;
TunnelAddress;
LocalAccessAddress;
StartTime;
StopTime;
Filter;
}
StartTime;
EndTime;
CurrentTime;
ReportPeriod;
BatchReportingTime PacketTransmitted;
PacketDropped;
ByteTransmitted;
ByteDropped;
Priority;
Bit_rate_average;
Bit_rate_Max;
Bit_rate_Min;
Max_Pkt_size;
Min_Pkt_size;
Max_Pkt_interval;
Min_Pkt_interval;
Min_Drop_interval;
}
Example_accounting_list::={
DURATION::=EndTime SUB StartTime;
BANDWIDTH::=Bit_rate_average;
BANDWIDTH_VAR::=Bit_rate_Max SUB Bit_rate_Min;
DROP_RATE_PKT::=
PacketDropped DIV TOTAL_PKT::=[PacketTransmitted ADD PacketDropped];
}
Claims (12)
- 移動端末であって、
ホームドメインサーバを経由して中央サーバとの間で認証を行う認証手段と、
前記移動端末の認証を行う前記中央サーバの鍵を用いて、前記移動端末のユーザ識別情報を含むメッセージにおける、前記移動端末のユーザ識別情報が含まれる部分を暗号化し、前記ホームドメインサーバの鍵を用いて、暗号化されたユーザ識別情報を含むメッセージを階層的に暗号化する暗号化手段と、
階層的に暗号化されたメッセージを前記ホームドメインサーバへ送信する通信手段と、
を具備する。 - 前記中央サーバの鍵は、ユーザ加入者情報に由来した鍵である、
請求項1記載の移動端末。 - 前記認証手段は、前記中央サーバとの間の認証をチャレンジメッセージ−レスポンス交換方式により行なう、
請求項1記載の移動端末。 - 前記通信手段は、前記ホームドメインサーバとの通信を非対称暗号化方式により行なう、
請求項1記載の移動端末。 - 前記暗号化手段により暗号化される前記ユーザ識別情報は、前記移動端末の恒久的なユーザ識別子であり、
前記暗号化手段での暗号化に用いる鍵が複数ある場合において、前記恒久的なユーザ識別子を暗号化する鍵を指定する指定手段、をさらに具備する、
請求項1記載の移動端末。 - 前記ホームドメインサーバとの間で事前に合意された鍵を用いて、前記移動端末の恒久的なユーザ識別子に基づき一時的なユーザ識別子を生成手段、をさらに具備する、
請求項1記載の移動端末。 - 前記暗号化手段での暗号化に用いるホームドメインサーバの鍵が複数ある場合において、暗号化に用いる鍵を指定するインディクス情報をネットワークアクセス識別情報に付与する付与手段、をさらに具備し、
前記ネットワークアクセス識別情報は、前記中央サーバへ前記メッセージをルーティングさせる情報である、
請求項1記載の移動端末。 - 前記中央サーバ及び前記ホームドメインサーバと共有する鍵を管理する管理手段、をさらに具備する、
請求項1記載の移動端末。 - ホームドメインサーバを経由した移動端末と中央サーバとの間の認証に用いられるユーザ識別情報保護方法であって、
前記移動端末の認証を行う前記中央サーバの鍵を用いて、前記移動端末のユーザ識別情報を含むメッセージにおける、前記移動端末のユーザ識別情報が含まれる部分を暗号化し、前記ホームドメインサーバの鍵を用いて、暗号化されたユーザ識別情報を含むメッセージを階層的に暗号化する暗号化ステップと、
階層的に暗号化されたメッセージを前記ホームドメインサーバへ送信する送信ステップと、
を具備する。 - 移動端末と中央サーバとの間の認証に使用されるメッセージを転送するホームドメインサーバであって、
前記移動端末から階層的に暗号化された前記移動端末のユーザ識別情報を含むメッセージを受信する受信手段と、
前記階層的に暗号化されたメッセージを前記ホームドメインサーバの鍵を用いて復号化する復号化手段と、
復号化されたメッセージの前記中央サーバの鍵で暗号化されたユーザ識別情報が含まれる部分を前記中央サーバへ転送する転送手段と、
を具備する。 - 前記転送手段は、前記移動端末から受信したチャレンジメッセージ−レスポンス交換方式の認証に使用されるメッセージを前記中央サーバに転送する、
請求項10記載のホームドメインサーバ。 - ホームドメインサーバを経由して移動端末と中央サーバとの間で認証を行うユーザ識別情報保護システムであって、
前記移動端末は、
前記移動端末の認証を行う前記中央サーバの鍵を用いて、前記移動端末のユーザ識別情報を含むメッセージにおける、前記移動端末のユーザ識別情報が含まれる部分を暗号化し、前記ホームドメインサーバの鍵を用いて、暗号化されたユーザ識別情報を含むメッセージに対して階層的に暗号化する暗号化手段と、
階層的に暗号化されたメッセージを前記ホームドメインサーバへ送信する通信手段と、を具備し、
前記ホームドメインサーバは、
前記移動端末から階層的に暗号化された前記移動端末のユーザ識別情報を含むメッセージを受信する受信手段と、
前記階層的に暗号化されたメッセージを前記ホームドメインサーバの鍵を用いて復号化する復号化手段と、
復号化されたメッセージの前記中央サーバの鍵で暗号化されたユーザ識別情報が含まれる部分を前記中央サーバへ転送する転送手段と、を具備する。
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US (2) | US7594113B2 (ja) |
EP (1) | EP1538779B1 (ja) |
JP (2) | JP4619788B2 (ja) |
CN (2) | CN100499538C (ja) |
AU (1) | AU2003272988A1 (ja) |
WO (1) | WO2004034645A1 (ja) |
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JP4619788B2 (ja) | 2011-01-26 |
CN101541000B (zh) | 2012-04-18 |
US7945777B2 (en) | 2011-05-17 |
US20090319774A1 (en) | 2009-12-24 |
AU2003272988A1 (en) | 2004-05-04 |
CN1714542A (zh) | 2005-12-28 |
EP1538779A1 (en) | 2005-06-08 |
EP1538779B1 (en) | 2020-02-19 |
WO2004034645A1 (ja) | 2004-04-22 |
US7594113B2 (en) | 2009-09-22 |
JP4999884B2 (ja) | 2012-08-15 |
CN101541000A (zh) | 2009-09-23 |
EP1538779A4 (en) | 2011-06-29 |
JPWO2004034645A1 (ja) | 2006-02-09 |
CN100499538C (zh) | 2009-06-10 |
US20060101273A1 (en) | 2006-05-11 |
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