WO1996005702B1 - Method and apparatus for authentication in a communication system - Google Patents
Method and apparatus for authentication in a communication systemInfo
- Publication number
- WO1996005702B1 WO1996005702B1 PCT/US1995/007353 US9507353W WO9605702B1 WO 1996005702 B1 WO1996005702 B1 WO 1996005702B1 US 9507353 W US9507353 W US 9507353W WO 9605702 B1 WO9605702 B1 WO 9605702B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- authentication
- unit
- home
- communication
- subscriber
- Prior art date
Links
- 230000004044 response Effects 0.000 claims abstract 28
- 230000003213 activating Effects 0.000 claims 3
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000001808 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
Abstract
A method and apparatus for authenticating a roaming subscriber. In a preferred embodiment, a subscriber receives a challenge (305) that is in a format of a local authentication protocol, and determines (310) whether the local authentication protocol is the subscriber's home system authentication protocol. If it is not, the subscriber converts the challenge into a format (e.g., bit length) compatible (325) with its home system authentication protocol, and processes the converted challenge with the subscriber's secret key and authentication algorithm into an authentication response (330). The authentication response is converted (335) to be compatible with the local authentication protocol, and transmitted (340) to a local system communication unit. The challenge and response is then forwarded to the subscriber's home system (345) for similar conversion and processing, and the subscriber's response is compared against a home system generated response (355).
Claims
1 . A method of generating authentication information for use in authenticating a subscriber unit communicating via a communication unit of a visited communication system using a first authentication protocol, the subscriber unit and a home communication system of the subscriber unit each storing a subscriber unit identifier and a first secret key of the subscriber unit and an authentication algorithm, the method comprising: in the home communication system, wherein the home communication system uses a home authentication protocol different from the first authentication protocol, ( a) receiving the identifier and an indication of a request for service from the communication unit; ( b ) in response to the request for service, generating an authentication challenge (RANDH ) in the home authentication protocol and obtaining the first secret key;
(c) processing the RANDJJ into an authentication response (RESPpj) i the home authentication protocol using the home communication system stored first secret key and authentication algorithm;
( d ) converting the RANDJJ into an authentication challenge (RANDy) in the first authentication protocol and converting the RESPfj into a response
(RES Py ) in the first authentication protocol: and
(e) communicating the RANDy and RESPy to the communication unit for use in authenticating the subscriber unit.
3. A method of authenticating a subscriber unit via a temporary subscriber unit terminal in a visited communication system using a first authentication protocol, the subscriber unit and a home communication system of the subscriber unit each storing a subscriber unit identifier and a first secret key of the - -
subscriber unit and an authentication algorithm, the method comprising: in the terminal,
(a) establishing a proximity communication link with the subscriber unit; (b) establishing a communication channel with a communication unit of the visited communication system, and requesting and receiving from the communication unit a first authentication challenge (RANDy) in the first authentication protocol from the visited communication system;
(c) converting, in response to a determination that the first authentication protocol is different from a home authentication protocol used in the home communication system of the subscriber unit, the RANDy into an authentication challenge (RANDJ-J) in the home authentication protocol, and sending the RANDH to the subscriber unit;
(d) receiving an authentication response (RESPLJ ) from the subscriber unit, and converting the RESPJJ into a response (RESPy) in the first authentication protocol;
(e) sending the RESPy to the communication unit: and
(f) receiving an authentication message notifying the terminal to activate a temporary subscriber unit when the RESPy ? converted into the home authentication protocol, is determined to match a further response calculated from the RANDy , converted into the home authentication protocol, and the first secret key using the authentication algorithm.
4. A subscriber unit for communicating via a communication unit of a local communication system and being authenticated by a home communication system, wherein the subscriber unit includes a memory having a subscriber identifier, a first secret key and an authentication algorithm, the subscriber unit comprising:
(a) communications means for sending and receiving signals to and from the communication unit; (b) determining means for determining that the local communication system uses a local system authentication protocol different from a home system authentication protocol used in the subscriber unit, and for activating an authentication means in response to such a determination; and
(c) the authentication means, coupled to the determining means and communications means, being operable for (i) converting a first authentication challenge (RANDy) from the communication unit in the local system authentication protocol into a home authentication challenge (RANDH) in the home authentication protocol, (ii) processing the RANDjj into a response (RESPjj) and first encryption key using the first secret key and authentication algorithm, and for converting the RESPJJ into a first response (RESPy) in the local system authentication protocol and outputting the RESPy to the communication means for transmission to the communication unit.
5. The subscriber unit of claim 4 further comprising second communication means, coupled to the determining means and authentication means, for establishing a proximity communication channel with a temporary subscriber unit terminal and communicating at least one further challenge, at least one further authentication response generated for each further challenge, the subscriber identifier and a service request between the subscriber unit and the terminal.
6. A subscriber identity unit adapted for being received in a subscriber unit communicating via a communication unit of a -35-
local communication system, wherein the subscriber identity unit includes a memory having a subscriber identifier, a first secret key and at least one authentication algorithm, the subscriber identity unit comprising: (a) interface means for sending and receiving information to and from the subscriber unit; (b) determining means for determining whether a challenge (RAND) received from the subscriber unit is in a home system authentication protocol or a visited system authentication protocol different from the home system authentication protocol, and for activating a converting means in response to such a determination that the RAND is in a visited system authentication protocol; (c) the converting means, coupled to the determining means and interface means, being operable for converting a first authentication challenge (RANDy) from the communication unit in the visited system authentication protocol into a home authentication challenge (RANDH) in the home system authentication protocol; and (d) processing means, coupled to the converting means, for inputting the RANDpj and calculating a response (RESP j) using the RANDJJ, the first secret key and the authentication algorithm; wherein the converting means is further operable for receiving and converting the RESPfj into a first response (RESPy) in the visited system authentication protocol and outputting the RESPy to the SU.
7. A subscriber terminal, for providing communication services to a subscriber having an authentication unit including a communications interface, a processor and a memory storing a subscriber identifier, a secret key and an authentication algorithm, and for communicating information between the -36-
authentication unit and a communication unit of a local communication system and authenticating the authentication unit by a home communication system of the authentication unit, the terminal comprising: (a) communications means for sending and receiving information to and from the communication unit, and for sending and receiving information to and from the authentication unit via the communications interface; (b) determining means for determining that the authentication unit uses a home system authentication protocol different from a local system authentication protocol used in the communication unit, and for activating a converting means in response to such a determination;
(c) the converting means, coupled to the determining means and communications means, being operable for converting a first authentication challenge (RANDy) in the local system authentication protocol into a home authentication challenge (RANDjj) in the home authentication protocol, and for converting a first response (RESPpj) to the RANDj-f from the authentication unit in the home system authentication protocol into a response (RESPy) in the local system authentication protocol; wherein the communications means is further operable for communicating the RANDH to the authentication unit and receive the RESPy from the authentication unit, and for communicating the RESPy to the communication unit.
8. A temporary subscriber unit for communicating user information via a local communication system, comprising:
(a) a temporary memory;
(b) interface means, coupled to the temporary memory, for receiving and inputting authentication information and at least one use parameter into the temporary memory, wherein - -
the at least one use parameter includes information specifying an amount of communications services allowed after which further communications with the temporary subscriber unit are inhibited; (c) communications means, coupled to the temporary memory, for using the authentication information to authenticate the temporary subscriber unit, and communicating the user information, with a local system for the specified amount of communications services; and (d) deactivation means for to inhibit the communication means and erase the authentication information and any subscriber-specific information following the specified amount of communications services.
9. A communication unit of a home communication system of a subscriber unit capable of operation in a second local communication system, wherein the communication unit and subscriber unit each have a memory including an authentication algorithm, a stored first secret key and a subscriber identifier of the subscriber unit, the communication unit comprising:
(a) communication means for receiving a request for authentication of the subscriber unit from the local communication system;
(b) determining means, coupled to the communication means, for determining, following receipt of the request for authentication, that the local communication system uses a local system authentication protocol different from a home system authentication protocol used in the subscriber unit;
(c) authentication means, coupled to the determining means and communications means, for generating authentication information in the local system authentication protocol for outputting to the communications means, the authentication means comprising means for generating a challenge and a response and means for converting the challenge and response from the home system authentication protocol into a challenge and response in the local system authentication protocol.
10. A communication system including a first subscriber unit, a home system having at least one home communication unit using a first authentication protocol and having memory for 0 storing an identifier and first secret key of the first subscriber unit, wherein the home communication unit is operable for processing an authentication challenge into a response using the authentication challenge and first secret key, the communication system comprising: 5 (a) a second local system having a local communication unit using a second authentication protocol, wherein the subscriber unit is operable for communicating with both the home system and local system;
(b) interworking means, coupled to at least one of the 0 local communication unit and home communication unit, for converting a first authentication challenge (RANDy ) in the second authentication protocol into a home authentication challenge (RANDH) in the home authentication protocol, and converting a response 5 to the RANDH (RESPJJ) i the home authentication protocol into a response (RESPy) in the second authentication protocol; and
(c) communication means for coupling the local communication unit to the home communication unit o for communicating between the local communication unit and home communication unit one of the group consisting of the RANDy and the RANDH and one of the group consisting of the RESPH and the RESPy .
5
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960701613A KR100227301B1 (en) | 1994-07-29 | 1995-06-07 | Method and apparatus for authentication in a communication system |
| BR9506293A BR9506293A (en) | 1994-07-29 | 1995-06-07 | Process of generating authentication information subscriber unit authentication process subscriber unit subscriber identification unit subscriber terminal temporary subscriber unit resident communication system communication system and communication system |
| JP8507290A JPH09503895A (en) | 1994-07-29 | 1995-06-07 | Method and apparatus for authenticating proof in a communication system |
| EP95938106A EP0721718A4 (en) | 1994-07-29 | 1995-06-07 | Method and apparatus for authentication in a communication system |
| FI961404A FI961404A0 (en) | 1994-07-29 | 1996-03-28 | Method and apparatus for identifying a subscriber in a communication system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/282,832 | 1994-07-29 | ||
| US08/282,832 US5537474A (en) | 1994-07-29 | 1994-07-29 | Method and apparatus for authentication in a communication system |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| WO1996005702A2 WO1996005702A2 (en) | 1996-02-22 |
| WO1996005702A3 WO1996005702A3 (en) | 1996-06-20 |
| WO1996005702B1 true WO1996005702B1 (en) | 1996-08-22 |
Family
ID=23083321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1995/007353 WO1996005702A2 (en) | 1994-07-29 | 1995-06-07 | Method and apparatus for authentication in a communication system |
Country Status (9)
| Country | Link |
|---|---|
| US (2) | US5537474A (en) |
| EP (1) | EP0721718A4 (en) |
| JP (1) | JPH09503895A (en) |
| KR (1) | KR100227301B1 (en) |
| BR (1) | BR9506293A (en) |
| CA (1) | CA2171017A1 (en) |
| FI (1) | FI961404A0 (en) |
| TW (1) | TW276387B (en) |
| WO (1) | WO1996005702A2 (en) |
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- 1995-06-14 TW TW084106089A patent/TW276387B/zh not_active IP Right Cessation
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