JPH0759154A - Inter-network authentication key generating method - Google Patents
Inter-network authentication key generating methodInfo
- Publication number
- JPH0759154A JPH0759154A JP5200932A JP20093293A JPH0759154A JP H0759154 A JPH0759154 A JP H0759154A JP 5200932 A JP5200932 A JP 5200932A JP 20093293 A JP20093293 A JP 20093293A JP H0759154 A JPH0759154 A JP H0759154A
- Authority
- JP
- Japan
- Prior art keywords
- network
- inter
- authentication key
- random number
- key
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は端末や加入者が移動し
て自身のホーム網とは異なる網からサービスを享受する
ことを可能とする移動通信やパーソナル通信システムに
おいて、ホーム網と異なる網で他の網から移動して来た
端末や加入者を認証するために用いる網間認証鍵を生成
する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication or personal communication system that enables terminals and subscribers to move and enjoy services from a network different from their own home network. The present invention relates to a method for generating an inter-network authentication key used for authenticating a terminal or a subscriber moving from another network.
【０００２】[0002]
【従来の技術】例えば図３に示すように移動通信網１，
２があり、網１に加入している移動端末（加入者）３が
網２へ移動し、その網２（ローミング先網）からサービ
スを受けることを網２にその基地局を通じて要求する
と、網２はその端末３の認証を行うために、例えば前記
基地局に接続された交換局から、端末３が加入している
網１（ホーム網）にそこに記憶されている端末３の認証
鍵Ｋ3 の転送を要求し、認証鍵Ｋ3 を受取り、鍵記憶装
置５（図４Ａ）に記憶する。その交換局で乱数発生装置
４から乱数ｐを生成して端末３へ送信する。この乱数ｐ
を受信した端末３は鍵記憶装置６（図４Ｂ）内のその端
末に割り当てられた認証鍵Ｋ3 と受信し乱数Ｐとを用い
て暗号化装置７で暗号化演算をして暗号文Ｃ（ｐ）を作
って前記交換局へ返送する。2. Description of the Related Art For example, as shown in FIG.
2 and a mobile terminal (subscriber) 3 subscribed to the network 1 moves to the network 2 and requests the network 2 (roaming destination network) to receive service from the network 2 through the base station, In order to authenticate the terminal 3, the authentication key K of the terminal 3 stored in the network 1 (home network) to which the terminal 3 subscribes, for example, from the exchange connected to the base station. 3 is requested, the authentication key K 3 is received, and stored in the key storage device 5 (FIG. 4A). The exchange generates a random number p from the random number generator 4 and sends it to the terminal 3. This random number p
The terminal 3 which has received the key received the authentication key K 3 assigned to the terminal in the key storage device 6 (FIG. 4B) and the random number P and performs an encryption operation by the encryption device 7 to generate a ciphertext C ( p) and send it back to the exchange.
【０００３】この交換局においても生成した乱数ｐと受
信した認証鍵Ｋ3 とを用いて暗号化装置８（図４Ａ）で
暗号化演算をして暗号文Ｃ（ｐ）を作り、これと端末３
から受信した暗号文Ｃ（ｐ）とを比較し、両者が一致し
た場合はその端末３を正当な端末と判断し、一致しなけ
れば、不正な端末と判断する。以上の手順を図５に示
す。This exchange also uses the generated random number p and the received authentication key K 3 to perform an encryption operation in the encryption device 8 (FIG. 4A) to create a ciphertext C (p), which is used by the terminal and the terminal. Three
The ciphertext C (p) received from is compared with each other. If they match, the terminal 3 is determined to be a valid terminal, and if they do not match, it is determined to be an unauthorized terminal. The above procedure is shown in FIG.
【０００４】[0004]
【発明が解決しようとする課題】以上述べたように、従
来の方式では端末の認証鍵自身をホーム網からローミン
グ先網に転送する方法をとっているから、何らかの手段
で転送中の認証鍵が第三者に知れると、その認証鍵を含
んだ不正な端末が製造され、しかもその不正端末を網が
検出できないという問題がある。また、上記の問題を避
けるために、ローミング中の端末についてもその端末の
ホーム網で認証を行う方法が考えられるが、この方法で
は網間の信号数の増大を招くという問題がある。As described above, since the conventional method adopts a method of transferring the terminal authentication key itself from the home network to the roaming destination network, the authentication key being transferred may be changed by some means. If known to a third party, there is a problem that an unauthorized terminal including the authentication key is manufactured, and the network cannot detect the unauthorized terminal. In order to avoid the above problem, a method of authenticating a roaming terminal in the home network of the terminal can be considered, but this method has a problem of increasing the number of signals between networks.
【０００５】この発明は、ローミング先の網内に閉じて
認証処理を遂行することを可能にし、しかし認証鍵が第
三者に知られるおそれがなく、また網間の信号数が増大
しないことを可能とする網間認証鍵生成方法を提供する
ことを目的とする。The present invention makes it possible to perform the authentication process by closing the roaming destination network, but the authentication key is not known to a third party, and the number of signals between networks does not increase. It is an object to provide an inter-network authentication key generation method that enables it.
【０００６】[0006]
【課題を解決するための手段】請求項１の発明によれば
ローミング先網が移動端末からサービス要求を受けると
その移動端末のホーム網に網間認証鍵を要求する。その
ホーム網は網間認証鍵の要求を受けると、乱数を生成
し、その乱数と移動端末の個有鍵とを用いて暗号演算を
行って網間認証鍵を生成し、この網間認証鍵と前記乱数
とを前記ローミング先網へ返送する。このローミング先
網は返送されたその網間認証鍵を保持し、返送された乱
数をサービス要求した移動端末へ送る。移動端末はその
乱数を受けると、この乱数と自己が保持している個有鍵
とを用いて暗号演算を行って網間認証鍵を生成し、これ
を保持する。According to the invention of claim 1, when the roaming destination network receives a service request from the mobile terminal, the inter-network authentication key is requested to the home network of the mobile terminal. When the home network receives a request for an inter-network authentication key, it generates a random number, performs cryptographic operation using the random number and the private key of the mobile terminal to generate the inter-network authentication key, and the inter-network authentication key is generated. And the random number are returned to the roaming destination network. The roaming destination network holds the returned inter-network authentication key, and sends the returned random number to the mobile terminal that requested the service. When the mobile terminal receives the random number, it performs a cryptographic operation using this random number and the private key held by itself to generate an inter-network authentication key, and holds it.
【０００７】このようにして得られた網間認証鍵を用い
て端末認証を行う。つまりローミング先網はサービス要
求のあった移動端末に対する認証を、従来と同様に乱数
を発生させ、これを移動端末へ送り、移動端末ではその
乱数と網間認証鍵とを用いて暗号文を作ってローミング
先網へ返送し、ローミング先網で網間認証鍵と乱数とで
暗号文を作り、これと受け取った暗号文とを比較する。Terminal authentication is performed using the inter-network authentication key obtained in this way. In other words, the roaming destination network generates a random number in the same way as in the conventional method for authenticating the mobile terminal that requested the service, sends it to the mobile terminal, and the mobile terminal uses the random number and the inter-network authentication key to create a ciphertext. Then, the roaming destination network sends the encrypted text back to the roaming destination network, and the roaming destination network creates a ciphertext using the inter-network authentication key and a random number.
【０００８】請求項２の発明によれば、網のサービスを
受けるために加入者番号などを記憶したＩＣカードを用
いるようにし、加入者に個有な個有鍵をその加入者のＩ
Ｃカードに保持させると共に、その加入者のホーム網に
各加入者の上記個有鍵を保持させ、ローミング先網が加
入者からサービス要求を受けるとその加入者のホーム網
に網間認証鍵を要求する。そのホーム網は網間認証鍵の
要求を受けると、乱数を生成し、その乱数とその加入者
の個有鍵とを用いて暗号演算を行って網間認証鍵を生成
し、この網間認証鍵と、前記乱数とを前記ローミング先
網へ返送する。このローミング先網はその返送された網
間認証鍵を保持し、返送された乱数をサービス要求した
加入者のＩＣカードへ送る。その加入者のＩＣカードは
その乱数を受けると、この乱数と自己が保持している個
有鍵とを用いて暗号演算を行って網間認証鍵を生成し、
これを保持する。According to the second aspect of the present invention, an IC card storing a subscriber number or the like is used to receive the service of the network, and the unique key unique to the subscriber is used as the I key of the subscriber.
The C card holds the subscriber's home network with the above-mentioned private key of each subscriber, and when the roaming destination network receives a service request from the subscriber, the inter-network authentication key is sent to the subscriber's home network. Request. When the home network receives a request for an inter-network authentication key, it generates a random number and performs a cryptographic operation using the random number and the subscriber's private key to generate the inter-network authentication key. The key and the random number are returned to the roaming destination network. The roaming destination network holds the returned inter-network authentication key, and sends the returned random number to the IC card of the subscriber who requested the service. When the IC card of the subscriber receives the random number, the IC card of the subscriber performs an encryption operation using the random number and the unique key held by itself to generate an inter-network authentication key,
Hold this.
【０００９】このようにして得られた網間認証鍵を用い
て加入者認証を前記移動端末に対して行った場合と同様
にして行う。The subscriber authentication is performed in the same manner as in the case where the mobile terminal is authenticated using the inter-network authentication key obtained in this way.
【００１０】[0010]
【実施例】図１及び２を参照して請求項１の発明の実施
例を説明する。図１Ａは網内の例えば交換局に設けられ
た網間認証鍵生成装置を示し、図１Ｂは移動端末中の網
間認証鍵生成装置を示し、それぞれ図４Ａ，４Ｂと対応
する部分に同一符号を付けてある。網に設けられる網間
認証鍵生成装置には乱数発生装置４で発生した乱数と、
ローミング先網を通じて端末へ送信する乱数送信装置１
２が付加され、端末の網間認証鍵生成装置には生成した
網間認証鍵を記憶する出力記憶装置１３が付加されてい
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the invention of claim 1 will be described with reference to FIGS. FIG. 1A shows an inter-network authentication key generation device provided in, for example, a switching center in the network, and FIG. 1B shows an inter-network authentication key generation device in a mobile terminal. Is attached. In the inter-network authentication key generation device provided in the network, the random number generated by the random number generation device 4
Random number transmission device 1 for transmitting to the terminal through the roaming destination network
2 is added, and an output storage device 13 for storing the generated inter-network authentication key is added to the inter-network authentication key generation device of the terminal.
【００１１】各端末３に個有な個有鍵Ｋ3 がホーム網１
の鍵記憶装置５と、端末３の鍵記憶装置６とにそれぞれ
記憶されてある。鍵記憶装置５は例えば各端末（加入
者）ごとに加入者データを記憶しているホームメモリに
その端末対応で記憶しておく。網１をホーム網とする端
末３が網２へ移動し、このローミング先網２に対し端末
３がサービス要求をした場合の網間認証鍵生成方法を図
２の処理手順を参照して説明する。The unique key K 3 unique to each terminal 3 is the home network 1
Are stored in the key storage device 5 and the key storage device 6 of the terminal 3, respectively. The key storage device 5 is stored in the home memory, which stores subscriber data for each terminal (subscriber), corresponding to the terminal. A method of generating an inter-network authentication key when a terminal 3 having the network 1 as a home network moves to the network 2 and the terminal 3 makes a service request to the roaming destination network 2 will be described with reference to the processing procedure of FIG. .
【００１２】ローミング先網２の例えば交換局が基地局
を介して端末３からサービス要求を受けると、その交換
局はその端末３の端末番号から端末３のホーム網を知
り、ホーム網１へ端末３の番号と共に網間認証鍵要求信
号を送る。これを受けたホーム網１はその端末３の端末
番号から端末３の個有鍵Ｋ3 を鍵記憶装置５から読出
し、また乱数発生装置４で乱数ｐを発生し、この乱数と
個有鍵Ｋ3 とを用いて暗号演算を暗号化装置８で行って
網間認証鍵Ｋi3を生成する。この網間認証鍵Ｋi3と前記
乱数ｐとをローミング先網２へ端末番号と共に返送す
る。When, for example, a switching center of the roaming destination network 2 receives a service request from the terminal 3 via the base station, the switching center knows the home network of the terminal 3 from the terminal number of the terminal 3 and sends it to the home network 1. An inter-network authentication key request signal is sent together with the number 3. Receiving this, the home network 1 reads the unique key K 3 of the terminal 3 from the key number of the terminal 3 from the key storage device 5, and the random number generator 4 generates a random number p. The encryption operation is performed by the encryption device 8 using 3 and 3, and the inter-network authentication key K i3 is generated. The network authentication key K i3 and the random number p are returned to the roaming destination network 2 together with the terminal number.
【００１３】ローミング先網２の前記交換局では、受取
った網間認証鍵にＫi3を他網送出データ記憶装置９内に
記憶しておき、受取った乱数ｐと、自網の乱数発生装置
４で発生した乱数ｑとを端末３へ送る。両乱数を受取っ
た端末３は、乱数ｐと自己が鍵記憶装置６に保持してい
る個有鍵Ｋ3 とを用いて暗号化装置７で暗号演算を行っ
て網間認証鍵Ｋi3を生成し、これを出力記憶装置１３に
記憶する。このようにして端末３を認証するための網間
認証鍵Ｋi3が得られた。この後の認証手順は従来と同様
である。In the exchange of the roaming destination network 2, K i3 is stored in the other network transmission data storage device 9 as the received inter-network authentication key, and the received random number p and the random number generation device 4 of the own network are stored. The random number q generated in step 1 is sent to the terminal 3. The terminal 3 that has received both random numbers uses the random number p and the unique key K 3 that it holds in the key storage device 6 to perform an encryption operation in the encryption device 7 to generate an inter-network authentication key K i3 . Then, this is stored in the output storage device 13. In this way, the inter-network authentication key K i3 for authenticating the terminal 3 was obtained. The subsequent authentication procedure is the same as the conventional one.
【００１４】つまり端末３で網間認証鍵Ｋi3と乱数ｑと
で暗号化装置７で暗号演算を行って暗号文Ｃ（ｑ）を作
り、これをローミング先網２へ送る。ローミング先網２
の交換局では先に発生した乱数ｑとホーム網１から受取
った網間認証鍵Ｋi3とを用いて暗号化装置８で暗号演算
を行って暗号文Ｃ（ｑ）を生成し、この暗号文と端末３
から受取った暗号文Ｃ（ｑ）と比較して端末３が正当な
ものか否かを判定する。That is, in the terminal 3, the encryption device 7 performs a cryptographic operation using the inter-network authentication key K i3 and the random number q to create a ciphertext C (q), which is sent to the roaming destination network 2. Roaming destination network 2
In the exchange, the encryption device 8 performs a cryptographic operation using the previously generated random number q and the inter-network authentication key K i3 received from the home network 1 to generate a cryptogram C (q). And terminal 3
It is determined whether or not the terminal 3 is valid by comparing with the ciphertext C (q) received from.
【００１５】上述ではこの発明を移動通信に適用したが
パーソナル通信に適用することもできる。つまり請求項
２の発明では、加入者は自己の加入者番号などを記憶し
たＩＣカードを、例えば、網内の固定端末に装着するこ
とにより、その網のサービスを受け、またその端末を着
信端末とするための着信登録を行うようにする。加入者
のＩＣカードにはその加入者に個有な個有鍵を保持さ
せ、またその個有鍵をホーム網に保持させる。加入者が
ホーム網とは別の網（ローミング先網）へ移動して、そ
の網からサービスを受けるためにその網の端末にＩＣカ
ードを装着させると、その端末が接続された交換局はそ
の加入者のホーム網へ網間認証鍵を要求する。そのホー
ム網では網間認証鍵の要求を受けると、乱数を生成し、
これと、その加入者の個有鍵とを用いて暗号演算を行っ
て網間認証鍵を生成し、この網間認証鍵と前記乱数と
を、前記ローミング網の交換局へ送る。その交換局は受
取った網間認証鍵を保持すると共に受取った乱数を前記
加入者のＩＣカードへ送る。そのＩＣカードは受取った
乱数と、保持している個有鍵とを用いて暗号演算を行っ
て網間認証鍵を生成して保持する。ＩＣカードの網間認
証鍵と、ローミング先網に保持した網間認証鍵とを用い
て、加入者に対する認証を行う方法は、先に移動端末に
対する方法と同様に行う。Although the present invention has been applied to mobile communication in the above description, it can also be applied to personal communication. That is, according to the invention of claim 2, the subscriber receives the service of the network by mounting the IC card storing his / her subscriber number or the like on a fixed terminal in the network, and the terminal receives the service. Incoming call registration for The IC card of the subscriber holds the private key unique to the subscriber, and holds the private key in the home network. When a subscriber moves to a network different from the home network (roaming destination network) and inserts an IC card into a terminal of the network to receive a service from the network, the exchange to which the terminal is connected receives the IC card. Request an inter-network authentication key from the subscriber's home network. When the home network receives a request for an inter-network authentication key, it generates a random number,
A cryptographic calculation is performed using this and the subscriber's private key to generate an inter-network authentication key, and the inter-network authentication key and the random number are sent to the exchange of the roaming network. The exchange holds the received network authentication key and sends the received random number to the IC card of the subscriber. The IC card performs a cryptographic operation using the received random number and the retained private key to generate and retain the inter-network authentication key. The method of authenticating the subscriber using the inter-network authentication key of the IC card and the inter-network authentication key held in the roaming destination network is the same as the method for the mobile terminal first.
【００１６】[0016]
【発明の効果】以上述べたようにこの発明によれば端末
に個有に割り当てた鍵をそのままローミング先網へ転送
することなく、認証の必要が生じると、その個有鍵と乱
数とで作った網間認証鍵をローミング先網への送り、ま
たその乱数を端末へローミング先網を介して送り、端末
で網間認証鍵を生成し、この網間認証鍵を用いて端末の
認証を行うため、網内のセキュリティが向上する。As described above, according to the present invention, when authentication is required without directly transferring the key uniquely assigned to the terminal to the roaming destination network, the key is generated from the unique key and a random number. The inter-network authentication key is sent to the roaming destination network, and the random number is sent to the terminal through the roaming destination network, the terminal generates the inter-network authentication key, and the inter-network authentication key is used to authenticate the terminal. Therefore, security in the network is improved.
【００１７】また一度、網間認証鍵が設定されると、以
後にそのローミング先網内で閉じて、つまりホーム網に
対し照合することなく認証処理を実施することができ、
認証ごとにホーム網へアクセスする必要がなく、網間の
信号量を低減させることができる。Once the inter-network authentication key is set, the roaming destination network can be closed thereafter, that is, the authentication process can be performed without collating with the home network.
Since it is not necessary to access the home network for each authentication, the amount of signals between networks can be reduced.
【図１】Ａは網内の網間認証鍵生成装置を示すブロック
図、Ｂは端末内の網間認証鍵生成装置を示すブロック図
である。FIG. 1 is a block diagram showing an inter-network authentication key generating apparatus in a network, and B is a block diagram showing an inter-network authentication key generating apparatus in a terminal.
【図２】この発明の実施例の処理手順を示す図。FIG. 2 is a diagram showing a processing procedure of an embodiment of the present invention.
【図３】ホーム網から端末が別の網（ローミング先網）
へ移動してサービスを受ける様子を示す図。FIG. 3 is a network in which the terminal is different from the home network (roaming destination network)
A diagram showing how to move to and receive services.
【図４】Ａは従来の端末認証に用いる網側装置を示すブ
ロック図、Ｂは端末側装置を示すブロック図である。FIG. 4 is a block diagram showing a network side device used for conventional terminal authentication, and B is a block diagram showing a terminal side device.
【図５】従来の端末認証方法の処理手順を示す図。FIG. 5 is a diagram showing a processing procedure of a conventional terminal authentication method.
Claims (2)
から別の網に移動し、その網のサービスを受けるため
に、その移動先網が上記移動端末の認証を行うために用
いる網間認証鍵を生成する方法であって、 移動端末に個有な個有鍵をその移動端末とホーム網とに
それぞれ保持させておき、 上記移動端末から上記別の網にサービス要求を受ける
と、その別の網は上記移動端末のホーム網に網間認証鍵
を要求し、 上記ホーム網は網間認証鍵の要求を受けると、乱数を生
成し、その乱数と上記移動端末の個有鍵とを用いて暗号
演算を行って網間認証鍵を生成し、 この網間認証鍵と上記乱数とを上記別の網へ送り、 その別の網は受信した網間認証鍵を保持し、受信した乱
数を上記サービス要求をした移動端末へ送り、 上記サービス要求をした移動端末は受信した上記乱数
と、自己に保持している個有鍵とを用いて暗号演算を行
って網間認証鍵を生成して保持することを特徴とする網
間認証鍵生成方法。1. A network to which a mobile terminal subscribes (home network)
Is a method of generating an inter-network authentication key used by the destination network to authenticate the mobile terminal in order to move from the network to another network and receive the service of that network, which is unique to the mobile terminal. The private key is held in the mobile terminal and the home network respectively, and when a service request is received from the mobile terminal to the other network, the other network sends the inter-network authentication key to the home network of the mobile terminal. When the home network receives the request for the inter-network authentication key, the home network generates a random number and performs an encryption operation using the random number and the private key of the mobile terminal to generate the inter-network authentication key. The inter-network authentication key and the random number are sent to the other network, and the other network holds the received inter-network authentication key, sends the received random number to the mobile terminal making the service request, and makes the service request. The mobile terminal has the received random number and its own Networks authentication key generation method characterized by holding the generated inter-network authentication key by performing a cryptographic operation using the and.
ら別の網に移動し、その網のサービスを受けるために、
その移動先網が上記加入者の認証を行うために用いる網
間認証鍵を生成する方法であって、 上記網のサービスを受けるために加入者番号などを記憶
したＩＣカードを用いるようにし、 加入者に個有な個有鍵をその加入者のＩＣカードに保持
させると共に、その加入者のホーム網に各加入者の上記
個有鍵を保持させ、 加入者から上記別の網にサービス要求を受けると、その
別の網は上記加入者のホーム網に網間認証鍵を要求し、 上記ホーム網は網間認証鍵の要求を受けると、乱数を生
成し、その乱数と、上記加入者のＩＣカードの個有鍵と
を用いて暗号演算を行って網間認証鍵を生成し、 この網間認証鍵と上記乱数とを上記別の網へ送り、 その別の網は受信した網間認証鍵を保持し、受信した乱
数を上記サービス要求をした加入者のＩＣカードへ送
り、 上記サービス要求をした加入者のＩＣカードは受信した
上記乱数と、自己に保持している個有鍵とを用いて暗号
演算を行って網間認証鍵を生成して保持することを特徴
とする網間認証鍵生成方法。2. In order to move from a network to which a subscriber subscribes (home network) to another network and receive services of that network,
A method of generating an inter-network authentication key used for the destination network to authenticate the subscriber, wherein an IC card storing a subscriber number or the like is used to receive services of the network, The subscriber holds his / her unique key in the IC card of the subscriber, and the subscriber's home network holds the above-mentioned private key of each subscriber, and the subscriber requests a service to the other network. Upon receiving the request, the other network requests an inter-network authentication key from the subscriber's home network, and when the home network receives the inter-network authentication key request, it generates a random number, and the random number and the subscriber's home network are generated. The inter-network authentication key is generated by performing a cryptographic operation using the unique key of the IC card, the inter-network authentication key and the random number are sent to the other network, and the other network receives the inter-network authentication. Hold the key and use the received random number as the IC card of the subscriber who made the above service request. The IC card of the subscriber who made the above service request performs cryptographic calculation using the received random number and the private key held by itself to generate and hold the inter-network authentication key. A method for generating an inter-network authentication key characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5200932A JPH0759154A (en) | 1993-08-13 | 1993-08-13 | Inter-network authentication key generating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5200932A JPH0759154A (en) | 1993-08-13 | 1993-08-13 | Inter-network authentication key generating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0759154A true JPH0759154A (en) | 1995-03-03 |
Family
ID=16432692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5200932A Pending JPH0759154A (en) | 1993-08-13 | 1993-08-13 | Inter-network authentication key generating method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0759154A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH099349A (en) * | 1995-06-20 | 1997-01-10 | Nec Commun Syst Ltd | Verification control system |
| JPH11102471A (en) * | 1997-09-26 | 1999-04-13 | Ntt Data Corp | Prepaid card system, certification system, reader, management device, and device certification method |
| US6363151B1 (en) | 1996-07-31 | 2002-03-26 | Siemens Aktiengesellschaft | Method and system for subscriber authentification and/or encryption of items of information |
| JP2002537739A (en) * | 1999-02-17 | 2002-11-05 | テレフォンアクチーボラゲット エル エム エリクソン（パブル） | Safe handover method |
| KR100377195B1 (en) * | 1999-08-16 | 2003-03-28 | 한국전자통신연구원 | Method For Authenticating Visiting User In Intelligent Network Interworking System |
| JP2007074180A (en) * | 2005-09-06 | 2007-03-22 | Bb Mobile Corp | Communication system and communication method |
| JP2008530917A (en) * | 2005-02-11 | 2008-08-07 | クゥアルコム・インコーポレイテッド | Context-restricted shared secret |
| JP2009094940A (en) * | 2007-10-11 | 2009-04-30 | Nippon Telegr & Teleph Corp <Ntt> | Roaming system, roaming method, and, terminal identification method |
| JP5623657B2 (en) * | 2011-11-24 | 2014-11-12 | 三菱電機株式会社 | Cryptographic communication system, cryptographic processing apparatus, computer program, and cryptographic communication method |
-
1993
- 1993-08-13 JP JP5200932A patent/JPH0759154A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH099349A (en) * | 1995-06-20 | 1997-01-10 | Nec Commun Syst Ltd | Verification control system |
| US6363151B1 (en) | 1996-07-31 | 2002-03-26 | Siemens Aktiengesellschaft | Method and system for subscriber authentification and/or encryption of items of information |
| JPH11102471A (en) * | 1997-09-26 | 1999-04-13 | Ntt Data Corp | Prepaid card system, certification system, reader, management device, and device certification method |
| JP4688296B2 (en) * | 1999-02-17 | 2011-05-25 | テレフオンアクチーボラゲット エル エム エリクソン（パブル） | Safe handover method |
| JP2002537739A (en) * | 1999-02-17 | 2002-11-05 | テレフォンアクチーボラゲット エル エム エリクソン（パブル） | Safe handover method |
| KR100377195B1 (en) * | 1999-08-16 | 2003-03-28 | 한국전자통신연구원 | Method For Authenticating Visiting User In Intelligent Network Interworking System |
| JP2008530917A (en) * | 2005-02-11 | 2008-08-07 | クゥアルコム・インコーポレイテッド | Context-restricted shared secret |
| JP2011227905A (en) * | 2005-02-11 | 2011-11-10 | Qualcomm Incorporated | Context limited shared secret |
| US8726019B2 (en) | 2005-02-11 | 2014-05-13 | Qualcomm Incorporated | Context limited shared secret |
| JP2014150567A (en) * | 2005-02-11 | 2014-08-21 | Qualcomm Incorporated | Context limited shared secret |
| JP2007074180A (en) * | 2005-09-06 | 2007-03-22 | Bb Mobile Corp | Communication system and communication method |
| JP4681990B2 (en) * | 2005-09-06 | 2011-05-11 | ソフトバンクＢｂ株式会社 | Communication system and communication system |
| JP2009094940A (en) * | 2007-10-11 | 2009-04-30 | Nippon Telegr & Teleph Corp <Ntt> | Roaming system, roaming method, and, terminal identification method |
| JP5623657B2 (en) * | 2011-11-24 | 2014-11-12 | 三菱電機株式会社 | Cryptographic communication system, cryptographic processing apparatus, computer program, and cryptographic communication method |
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