WO2004019641A1 - Verfahren zum authentifizieren eines nutzers eines kommunikationsendgeräts beim registrieren in einem und bei nutzung von einem dienstnetz - Google Patents
Verfahren zum authentifizieren eines nutzers eines kommunikationsendgeräts beim registrieren in einem und bei nutzung von einem dienstnetz Download PDFInfo
- Publication number
- WO2004019641A1 WO2004019641A1 PCT/DE2002/003061 DE0203061W WO2004019641A1 WO 2004019641 A1 WO2004019641 A1 WO 2004019641A1 DE 0203061 W DE0203061 W DE 0203061W WO 2004019641 A1 WO2004019641 A1 WO 2004019641A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- communication terminal
- address
- ims
- service
- public
- Prior art date
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Classifications
-
- 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
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/1016—IP multimedia subsystem [IMS]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/26—Network addressing or numbering for mobility support
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
- H04W80/04—Network layer protocols, e.g. mobile IP [Internet Protocol]
Definitions
- mobile radio users are offered services which are provided by special networks (service networks) which are optimized for the provision of services.
- service networks are connected to the service network via an access network (for example a communication network operating according to the GPRS standard). It is often of interest for network operators to determine the identity of the service users before the service is provided and to register these users if the authentication is successful.
- An example of such a service network is a so-called IMS (IP Multimedia Subsystem) standardized in the context of 3GPP Release 5.
- IMS IP Multimedia Subsystem
- a prerequisite for the charging of services requested by a user (service charging) in the IMS is the identification of the user in the IMS, as can be implemented according to the mechanisms described in the 3GPP TS 23.228 version 5.4.1.
- These mechanisms are based, among other things, on the use of a new SIM card (ISIM) in the communication terminal, generation of key material in a home register of the service network, a SIP-based registration procedure and control mechanisms in the access network, such as a GPRS access network , which is controlled from the service network via a new interface.
- ISIM SIM card
- the implementation of these mechanisms requires that communication terminals and the access network essentially have to be adapted or comply with the 3GPP standardization release 5, which is not yet implemented. This leads to a security gap, especially when charging for services and content offered in the IMS. It is possible for a user acting with fraudulent intent to fake the network a false identity, so that another Participants would be billed for the services used. The network would also be more susceptible to denial of service attacks.
- a registration procedure as required above is the subject of the German patent application DE 10223248.2. It enables reliable identification of a service network user (IMS user) in the event that the service network is connected to an existing Release 99 GPRS network or that services of the service network based on existing Release 99 communication terminals are used that do not have ISIM and also do not allow access to information on the SIM card.
- IMS user service network user
- access networks such as GPRS access networks, in which non-standardized, specific access network nodes, such as GGSNs in the GPRS access network, are able to verify login IP addresses assigned by them to the respective communication terminals when logging on to the access network.
- the GGSN can check whether a login IP address which is also transmitted with a message actually comes from the communication terminal to which this login IP address was previously assigned.
- a method for authenticating a user of a communication terminal (UE) when registering and when using a service network (IMS) organizing a communication service is provided, with a communication terminal (UE) accessing the service network (IMS) via an access network (GPRS) connecting the communication terminal (UE) to the service network (IMS) takes place in which - in a preliminary step - a registration IP address (IP-SRC-UE) which is used when the communication terminal (UE) registers with the Access network (GPRS) was assigned to the communication terminal (UE) by an access network node (GGSN), received by the service network (IMS) and stored in it for the respective user of the communication terminal, - the registration IP address (IP-SRC-UE ) from the service network (IMS)
- IP-SRC-UE registration IP address
- IP-SRC-UE login IP address assigned to the communication terminal and in the service network that of the login -IP address (IP-SRC-UE) assigned public identifier (SIP Public ID) are verified,
- the method according to the invention advantageously does not require any communication terminals or access networks which correspond to standardization regulations of 3GPP "Release 5". Rather, the method according to the invention can also be used with the currently prevailing communication terminals and access networks which standardization regulations of 3GPP "Release 1999” (also as “Release.” 3 ") are sufficient. For example, common communication terminals today are those which only have a conventional" Subscriber Identity Module (SIM) "card.
- SIM Subscriber Identity Module
- Another advantage of the method according to the invention is that the method is very simple and efficient. It is not necessary to create a license plate here, as is provided in the method from DE10223248, nor must this code be decoded again. The process steps are much simpler and can therefore be carried out more quickly.
- the method according to the invention can also be designed such that, in addition to the verification of the login IP address (IP-SRC-UE) and the public identifier assigned to the login IP address (SIP public ID), a verification of a private identifier (SIP private ID) of the communication terminal is carried out and only after successful verification of the login IP address, the public identifier assigned to the login IP address (SIP public ID) and the private identifier (SIP private ID ) a successful one Registration is recognized and / or the requested communication service is executed.
- IP-SRC-UE the public identifier assigned to the login IP address
- SIP public ID a verification of a private identifier of the communication terminal is carried out and only after successful verification of the login IP address, the public identifier assigned to the login IP address (SIP public ID) and the private identifier (SIP private ID ) a successful one Registration is recognized and / or the requested communication service is executed.
- the verification of the public identifier assigned to the registration IP address is carried out by a switching center (S-CSCF) of the service network (IMS).
- S-CSCF switching center of the service network
- SID-Private-ID is preferably also carried out by a switching center (S-CSCF) of the service network (IMS).
- S-CSCF switching center of the service network
- the communication terminal upon successful verification of the login IP address (IP-SRC-UE) in the access network node (GGSN) and the public identifier assigned to the login IP address, the communication terminal is registered in the service network (IMS) and / or an execution of the requested service by a switching center (S-CSCF) of the service network (IMS) and, if the registration IP address (IP-SRC-UE) is not verified in the access network node (GGSN) and / or the public identifier assigned to the login IP address (SIP public ID) is refused registration and / or execution of the requested service by the switching center (S-CSCF).
- IMS service network
- S-CSCF switching center
- GGSN access network node
- Figure 1 shows an embodiment of an arrangement for performing the method according to the invention
- Figure 2 is a schematic representation of an embodiment of the method according to the invention
- Figure 3 is a schematic representation of a further embodiment of the method according to the invention.
- the first network connection SIP1 can be connected to a first communication terminal UE 1.
- the access network has a second GPRS gateway switching center GGSN2, which can be connected to a second communication terminal UE2 via a second signal connection SIP2 operating according to the SIP standard UE1 and the second communication terminal UE2 can be, for example, mobile telephones, laptops or palmtops with a mobile radio module.
- the first GPRS gateway switching center GGSN1 and the second GPRS gateway switching center GGSN2 are via data connections 3 and 4 with an “authentication authorization” Accounting "server AAA of Ceia Network connected.
- HSS Home Subscriber Server
- IP Multimedia Core Network Subsystem operating as a service network IMS.
- S-CSCF Call Session Control Function
- S-CSCF Serving-CSCF
- the first communication terminal UE1 e.g. a message called "IMS Instant Message" is sent to the second communication terminal UE2; however, the first communication terminal UE1 and possibly also the second communication terminal UE2 must be registered (registration, registration) beforehand.
- IMS Instant Message a message called "IMS Instant Message”
- Authentication of a user of a communication terminal is carried out when the communication terminal logs into the GPRS access network. If authentication is successful, a PDP context is generated and the GGSN assigns a temporary IP address for the communication terminal. This IP address allows other network participants to send IP packets to this communication terminal.
- An MSISDN is also assigned to users of communication terminals that use a GPRS access network. The MSISDN is a number under which the respective user of the communication terminal can be reached in the GPRS and in the GSM. In addition, the user or the communication terminal must register with the service network IMS and authenticate in the process.
- Both procedures, the registration in the GPRS access network and the registration (registration) in the IMS service network, are carried out automatically, for example, when the terminal is switched on.
- An essential part of registering with the Service network represents authentication by the service network.
- a user of the communication terminal is authenticated during the registration of the communication terminal with the service network. Exactly considered, the SIM card of the user, which is inserted in the communication terminal, is recognized and thus the person of the user is inferred.
- Authentication of a user of a communication terminal in the service network essentially includes verification of a SIP address assigned to the user of the communication terminal, i.e. an address at which the user of the communication terminal can be reached in the service network.
- the verification of the SIP Public User ID is of particular importance, since it is used to charge for services used from the service network.
- the SIP private user ID is verified from the SIP public user ID, since there is only one SIP private user ID for each SIP public user ID.
- the SIP Public User ID must be verified on the one hand when a user of a communication terminal device is registered in the service network and on the other hand when using a service of the service network. If a user of a communication terminal wants to register in the service network, such as IMS, the communication terminal sends a SIP REGISTER message to the service network (IMS). The aim of the IMS authentication is to check whether the in this
- SIP Public User ID Message specified SIP Public User ID is correct.
- SIP Private User ID can also be checked for greater security.
- the inventive method is based 'substantially on the following two fundamental ideas: a verifiable binding of a user of a communication terminal who would like to use a service network (IMS) to the temporary IP address which was assigned by the access network node (GGSN) during the registration into the GPRS access network,
- IMS service network
- GGSN access network node
- FIG. 2 shows how user authentication is carried out according to the invention during the registration of a communication terminal in a service network (IMS).
- the message flow shown here (SIP message flow) is identical to that in the 3GPP in the publication TS 24.228 version 5.0.0 for the IMS registration of a communication terminal or a user standardized message flow.
- the message flow (SIP message flow) shown in FIG. 2 differs from the standard in the authentication procedure that is carried out in the service network (IMS).
- the process sequence shown in FIG. 2 begins with a user communication terminal being booked into a GPRS access network.
- a temporary IP address is assigned to the communication terminal. This is referred to in Figure 2 as IP-SRC-UE.
- An AAA server in the access network allows access control and is for collecting
- the AAA server receives the temporary IP address of the communication terminal and a corresponding MSISDN of the associated communication terminal from the access node GGSN. These two parameters are then transmitted to a home register HSS of the service network IMS. Communication between the GGSN and the AAA server is in the 3GPP standard TS 29,061. The data exchange between the AAA server and the HSS is proprietary. Alternatively, the HSS could be connected directly to the access network node GGSN via a proprietary or standardized interface. After receiving the parameters mentioned, the home register HSS can use the MSISDN to determine the SIP public user ID belonging to the temporary IP address (IP-SRC-UE). This is possible because each communication terminal using the service network (IMS) is entered in the user profile in addition to its SIP public user ID and its SIP private user ID as well as its MSISDN.
- IMS SIP public user ID belonging to the temporary IP address
- IP-SRC-UE temporary IP address
- the switching center (S-CSCF) loads the parameter pair ⁇ IP-SRC-UE; SIP Public ID> from the home register HSS of the service network (IMS) and stores it in a local database of the exchange S-CSCF.
- This pair of parameters is compared with the parameters specified in the SIP REGISTER message.
- the SIP private user ID from the SIP REGISTER can be can be compared with the SIP Private User ID stored in the user's profile for the SIP Public User ID.
- the communication terminal is authenticated in the service network (IMS) if the SIP public user ID stored for the IP address on the exchange S-CSCF matches the SIP public user ID from the SIP REGISTER message and that for this SIP public user ID SIP private user ID stored on the exchange S-CSCF matches the SIP private user ID from the SIP REGISTER message.
- IMS service network
- the result of this authentication is communicated to the communication terminal.
- the associated message flow again corresponds to the standard.
- a successful authentication is assumed in FIG. 2, which is communicated to the communication terminal via a SIP 200 OK message which is sent from the switching center S-CSCF to the communication terminal.
- the home register HSS is informed of the successful authentication.
- an index method could advantageously be used.
- Registration in a service network is usually only valid for a certain period, such as with an IMS. This duration is determined by the service network and thus by the network operator and communicated to the communication terminal during successful registration. In order to maintain registration in the service network for a longer period of time, the communication terminal must Register again before the registration period expires. This is called re-registration. The re-registration is usually carried out automatically at periodic intervals by the communication terminal in accordance with the method described.
- the parameter pair can also be used for authentication of a communication terminal when requesting a service of the service network IMS.
- IMS services may only be carried out after successful registration in the IMS service network.
- Figure 3 shows the establishment of a so-called chat session in a service network IMS. IMS chat sessions are established by a so-called SIP INVITE message and dismantled by a so-called SIP BYE message.
- An inventive check of the parameter pair ⁇ IP-SRC-UE; SIP Public ID> ensures that only an authenticated communication terminal can start and end a chat session.
- the validity of the parameter pair ⁇ IP-SRC-UE; SIP Public ID> is checked by the exchange S-CSCF before the service is carried out.
- the switching center S-CSCF carries out the same checks that are carried out during registration in the service network (IMS) and authentication for SIP REGISTER messages.
- the check differs only in that the SIP private user ID is not checked, since only SIP REGISTER messages contain these as parameters.
- the message flow shown in FIG. 3 is identical to the message flow standardized in the 3GPP in the publication TS 24.228 version 5.0.0 for setting up a SIP chat session. It differs from the standard in the authentication procedure that is carried out in the service network (IMS).
- IMS service network
- a communication terminal UE-A registers in the GPRS access network and in the IMS service network.
- the parameter pair ⁇ IP-SRC-UE;SlP-Pub-lic-ID> transferred to the exchange S-CSCF.
- a user A After registration, a user A starts an IMS service on his communication terminal UE-A.
- the message flow that follows is identical to the flow specified in the standard TS 23.228.
- a SIP INVITE message is first sent from the communication terminal UE-A to a further communication terminal UE-B of another user B.
- the SIP INVITE message contains the IP address (IP-SRC-UE-1) of the communication terminal UE-A.
- IP-SRC-UE-1 IP address
- the SIP INVITE message also contains the SIP
- This parameter can also be manipulated.
- the parameters sent in the SIP INVITE message are compared with the parameter pair ⁇ IP-SRC-UE stored in the switching center S-CSCF during the registration procedure; SIP Public ID> compared. This corresponds to steps 2 to 6 in FIG. 3.
- User A with his communication terminal UE-A is authenticated if the SIP public user ID stored for the IP address on the S-CSCF matches the SIP public user ID from the SIP INVITE message.
- the communication terminal UE-A is S-CSCF sent a SIP-401-UNAUTHORIZED message to the communication terminal UE-A of user A.
- the message flow continues in accordance with the standard TS 23.228 (steps 7 to 27). However, for each message that arrives at the exchange S-CSCF, the parameter pair ⁇ IP-SRC-UE; SIP Public ID> checked as described.
- the method according to the invention has a number of advantages. It does not require new interfaces or network elements. No services can be used without a clear authentication of a service user in an IMS service network.
- the method according to the invention represents a possibility for secure authentication of a user of the service network.
- the method according to the invention can be used both for charging for services in an IMS service network and for charging for content that is offered in the IMS service network.
- the proposed method according to the invention provides the same security as exists today, for example, for WAP services.
- Another advantage of the method according to the invention is that, in addition to WAP services, a user can also use IMS services without having to log in again, for example using a password.
- the Release 99 GPRS networks implemented today can also be used as access networks for the IMS service network, since the method according to the invention allows secure authentication of a user of an IMS service network.
- the method according to the invention is based on the fact that in the IMS
- Service network a relationship between the temporary IP address that a user of a communication terminal or a commu- nikationsendgerat assigned to a GPRS registration by a GGSN access network node and the public identifier, the so-called SIP Public User ID, which is used for charging.
- the GGSN access network node is able to check the authenticity of the IP address specified in the SIP messages, this enables the SIP Public User ID and the SIP Private User ID to be securely identified. This enables secure authentication of a user of IMS services.
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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Hardware Design (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Mobile Radio Communication Systems (AREA)
- Telephonic Communication Services (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/DE2002/003061 WO2004019641A1 (de) | 2002-08-16 | 2002-08-16 | Verfahren zum authentifizieren eines nutzers eines kommunikationsendgeräts beim registrieren in einem und bei nutzung von einem dienstnetz |
AU2002336038A AU2002336038A1 (en) | 2002-08-16 | 2002-08-16 | Method for authenticating a user of a communication terminal during registration in a service network and during use of the same |
DE10297809T DE10297809D2 (de) | 2002-08-16 | 2002-08-16 | Verfahren zum Authentifizieren eines Nutzers eines Kommunikationsendgeräts beim Registrieren in einem und bei Nutzung von einem Dienstnetz |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/DE2002/003061 WO2004019641A1 (de) | 2002-08-16 | 2002-08-16 | Verfahren zum authentifizieren eines nutzers eines kommunikationsendgeräts beim registrieren in einem und bei nutzung von einem dienstnetz |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004019641A1 true WO2004019641A1 (de) | 2004-03-04 |
Family
ID=31892775
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2002/003061 WO2004019641A1 (de) | 2002-08-16 | 2002-08-16 | Verfahren zum authentifizieren eines nutzers eines kommunikationsendgeräts beim registrieren in einem und bei nutzung von einem dienstnetz |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2002336038A1 (de) |
DE (1) | DE10297809D2 (de) |
WO (1) | WO2004019641A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005015875A1 (en) * | 2003-07-31 | 2005-02-17 | T-Mobile Deutschland Gmbh | Transparent access authentication in gprs core networks |
WO2006072219A1 (fr) * | 2005-01-07 | 2006-07-13 | Huawei Technologies Co., Ltd. | Systeme d'authentification d'un reseau de sous-systeme multimedia ip et procede associe |
CN100428848C (zh) * | 2005-05-31 | 2008-10-22 | 华为技术有限公司 | 一种对终端用户标识模块进行ip多媒体域鉴权的方法 |
CN111062010A (zh) * | 2019-11-08 | 2020-04-24 | 支付宝(杭州)信息技术有限公司 | 一种身份验证方法、装置及设备 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002032165A1 (en) * | 2000-10-09 | 2002-04-18 | Nokia Corporation | Method and system for establishing a connection between network elements |
-
2002
- 2002-08-16 DE DE10297809T patent/DE10297809D2/de not_active Expired - Fee Related
- 2002-08-16 AU AU2002336038A patent/AU2002336038A1/en not_active Abandoned
- 2002-08-16 WO PCT/DE2002/003061 patent/WO2004019641A1/de not_active Application Discontinuation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002032165A1 (en) * | 2000-10-09 | 2002-04-18 | Nokia Corporation | Method and system for establishing a connection between network elements |
Non-Patent Citations (4)
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005015875A1 (en) * | 2003-07-31 | 2005-02-17 | T-Mobile Deutschland Gmbh | Transparent access authentication in gprs core networks |
US7770216B2 (en) | 2003-07-31 | 2010-08-03 | T-Mobile Deutschland Gmbh | Transparent access authentication in GPRS core networks |
WO2006072219A1 (fr) * | 2005-01-07 | 2006-07-13 | Huawei Technologies Co., Ltd. | Systeme d'authentification d'un reseau de sous-systeme multimedia ip et procede associe |
CN100428848C (zh) * | 2005-05-31 | 2008-10-22 | 华为技术有限公司 | 一种对终端用户标识模块进行ip多媒体域鉴权的方法 |
US8027666B2 (en) | 2005-05-31 | 2011-09-27 | Huawei Technologies Co., Ltd. | Method and system for authenticating terminal subscriber identity module in IP multimedia domain |
CN111062010A (zh) * | 2019-11-08 | 2020-04-24 | 支付宝(杭州)信息技术有限公司 | 一种身份验证方法、装置及设备 |
CN111062010B (zh) * | 2019-11-08 | 2022-04-22 | 支付宝(杭州)信息技术有限公司 | 一种身份验证方法、装置及设备 |
Also Published As
Publication number | Publication date |
---|---|
AU2002336038A1 (en) | 2004-03-11 |
DE10297809D2 (de) | 2005-07-07 |
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