JPH0669917A - Data signal ciphering communication terminal equipment - Google Patents
Data signal ciphering communication terminal equipmentInfo
- Publication number
- JPH0669917A JPH0669917A JP4222370A JP22237092A JPH0669917A JP H0669917 A JPH0669917 A JP H0669917A JP 4222370 A JP4222370 A JP 4222370A JP 22237092 A JP22237092 A JP 22237092A JP H0669917 A JPH0669917 A JP H0669917A
- Authority
- JP
- Japan
- Prior art keywords
- station
- selection signal
- signal
- key code
- ciphering
- 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】本発明は、データ信号暗号化通信
端末装置に関し、特にデジタル公衆網を利用しダイヤル
選択された２局間で通信を行う場合に使用されるデータ
信号暗号化通信端末装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data signal encryption communication terminal device, and more particularly to a data signal encryption communication terminal device used when communication is made between two dial-selected stations using a digital public network. Regarding
【０００２】[0002]
【従来の技術】従来、この種のデータ信号暗号化通信端
末装置は、自局と相手局とがあらかじめそれぞれ同じ暗
号キーコードを入力していた。図３は、従来のデータ信
号暗号化通信端末装置の例を示すブロック図である。暗
号器１０２は、入力端子１００からのデジタルデータを
入力し、入力端子１０１から入力された暗号キーコード
に従って、デジタルデータを暗号化する。暗号化された
デジタルデータは発着信呼出応答回路１０３に入力さ
れ、ダイヤルキー１０４から入力される相手局の電話番
号、即ち選択信号によって発信呼出し、着信応答し、回
線接続後に出力端子１０５から暗号化データ信号を出力
する。2. Description of the Related Art Conventionally, in a data signal encryption communication terminal device of this type, the same encryption key code has been input in advance by the local station and the remote station. FIG. 3 is a block diagram showing an example of a conventional data signal encryption communication terminal device. The encryption device 102 inputs the digital data from the input terminal 100 and encrypts the digital data according to the encryption key code input from the input terminal 101. The encrypted digital data is input to the outgoing / incoming call response circuit 103, and an outgoing call is made by the telephone number of the partner station input from the dial key 104, that is, a selection signal, an incoming call is answered, and the output terminal 105 encrypts the line after connection. Output the data signal.
【０００３】入力端子１０６からの受信暗号化データ信
号は発着信呼出応答回路１０３に入力され、回線接続後
に解読器１０７へ出力する。解読器１０７は、入力端子
１０１から入力された暗号キーコードに従ってデジタル
データ信号を解読し出力する。The received encrypted data signal from the input terminal 106 is input to the outgoing / incoming call response circuit 103, and output to the decryptor 107 after the line connection. The decoder 107 decodes and outputs the digital data signal according to the encryption key code input from the input terminal 101.
【０００４】[0004]
【発明が解決しようとする課題】このように、従来のデ
ータ信号暗号化通信端末装置では、通信を行う度に、自
局と相手局においてそれぞれ同じ暗号キーコードを入力
する必要があるため、通信する相手が変わる度に暗号キ
ーコードをその都度変更しなければならないという問題
がある。As described above, in the conventional data signal encryption communication terminal device, it is necessary to input the same encryption key code in each of the own station and the partner station each time communication is performed. There is a problem that the encryption key code has to be changed each time the partner to be changed changes.
【０００５】[0005]
【課題を解決するための手段】本発明のデータ信号暗号
化通信端末装置は、データ信号を入力し前記暗号キーコ
ードにより暗号化し出力する暗号器と、暗号化データ信
号を入力し前記暗号キーコードにより解読しデータ信号
を出力する解読器と、相手局選択信号を発生するダイヤ
ルキー部と、あらかじめ登録される自局選択信号を保持
するメモリ部と、自局発信により前記ダイヤルキー部か
ら発生される相手局選択信号と前記自局選択信号とを相
手局側回線に送信し相手局からの応答信号の着信により
前記暗号器の出力側と前記解読器の入力側とを前記相手
側回線側に回線接続し、自局着信により相手局からの自
局選択信号と相手局選択信号とを受信した時は応答信号
を相手局に送信すると同時に前記回線接続を行う発着信
呼出応答回路と、前記ダイヤルキー部の相手局選択信号
と前記相手局からの相手局選択信号との一方と前記メモ
リ部の自局選択信号とにより暗号パターンを決定し前記
暗号キーコードを発生する暗号キーコード発生器とを備
えている。A data signal encryption communication terminal device of the present invention includes an encryption device for inputting a data signal, encrypting the data signal with the encryption key code, and outputting the encrypted data signal. A decoder for decoding and outputting a data signal, a dial key section for generating a partner station selection signal, a memory section for holding a pre-registered local station selection signal, and a dial key section generated by the local station for transmission. The partner station selection signal and the own station selection signal are transmitted to the partner station side line, and when the response signal from the partner station is received, the output side of the encryption device and the input side of the decryptor are transferred to the partner side line side. When a line is connected and a local station incoming signal receives a local station selection signal and a remote station selection signal from the remote station, a call origination / answer call response circuit that transmits a response signal to the remote station and at the same time connects the line, An encryption key code generator for determining an encryption pattern and generating the encryption key code by one of the partner station selection signal of the dial key section and the partner station selection signal from the partner station and the own station selection signal of the memory section. It has and.
【０００６】[0006]
【実施例】次に本発明の一実施例について図面を参照し
説明する。図１は本実施例によるデータ信号暗号化通信
端末装置のブロック図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a data signal encryption communication terminal device according to this embodiment.
【０００７】入力端子１から入力されるデジタルデータ
ａは暗号器２に入力され、ここで暗号キーコード発生器
３から出力される暗号キーコードｂにしたがって、暗号
化され発着信呼出応答回路４へ暗号化データ信号ｃとし
て出力される。発着信呼出応答回路４は、ダイヤルキー
６からダイヤリングした相手局の選択信号ｅを入力し、
この選択信号ｅとともに自局選択信号メモリ部７からの
自局選択信号ｄとを発信し、相手局からの応答信号の着
信により回線接続されたとき、暗号化データ信号ｃを回
線出力端子８から出力する。また、回線入力端子９より
入力される受信暗号化データ信号ｋを受信して解読器１
０へ出力する。The digital data a input from the input terminal 1 is input to the encryption device 2, where it is encrypted according to the encryption key code b output from the encryption key code generator 3 and is sent to the incoming / outgoing call response circuit 4. It is output as the encrypted data signal c. The outgoing / incoming call response circuit 4 inputs the dialed selection signal e of the partner station from the dial key 6,
This selection signal e is transmitted together with the own station selection signal d from the own station selection signal memory unit 7, and when the line connection is established by the arrival of the response signal from the partner station, the encrypted data signal c is output from the line output terminal 8. Output. In addition, the decryption device 1 receives the received encrypted data signal k input from the line input terminal 9
Output to 0.
【０００８】解読器１０は、暗号キーコード発生器３か
ら出力される暗号キーコードｂにしたがって、暗号化デ
ータ信号ｋを暗号解読し、出力端子１１へデジタルデー
タ信号ｍとして出力する。暗号キーコード発生器３は、
自局選択信号メモリ７からの自局選択信号ｄと、切替器
５からの相手局選択信号ｆとを入力し、２つの信号を論
理演算あるいは算術演算して暗号キーコードｂを出力す
る。ここで、２つの選択信号は一般によく知られた電話
番号を想定したが、端末装置に登録されたＩＤ番号でも
よい。The deciphering device 10 deciphers the encrypted data signal k according to the cipher key code b output from the cipher key code generator 3, and outputs it to the output terminal 11 as a digital data signal m. The encryption key code generator 3 is
The local station selection signal d from the local station selection signal memory 7 and the partner station selection signal f from the switch 5 are input, and the two signals are logically or arithmetically operated to output an encryption key code b. Here, the two selection signals are assumed to be generally well known telephone numbers, but may be ID numbers registered in the terminal device.
【０００９】切替器５は、自局発信の場合、発着信呼出
応答回路４から出力される切替信号ｈにより、ダイヤル
キー６より入力された相手局選択信号ｅが選択されてお
り、自局着信の場合には、発着信呼出応答回路４で着信
時に受信した相手局選択信号ｇが選択される。In the case of originating the own station, the switching device 5 selects the partner station selection signal e input from the dial key 6 by the switching signal h output from the outgoing / incoming call response circuit 4, and the incoming call of the own station is received. In this case, the calling / calling response circuit 4 selects the partner station selection signal g received at the time of the incoming call.
【００１０】図２は図１の装置による通信手順の一例を
示すフローチャートである。図２は、Ａ局から発信した
場合を示す。この図において、Ａ局側のダイヤリングに
より発信し、Ｂ局へ呼出信号（ｅ＋ｄ）を出力する。こ
のとき、Ａ局側は、Ａ局選択信号ｅとダイヤルしたＢ局
選択信号ｄとによって、暗号キーコードｂを発生する。
一方Ｂ局側は、呼出信号を受けて着信し、このときＡ局
選択信号ｄを受信し、このＡ局選択信号ｄとＢ局選択信
号ｅ（Ｂ局においては自局選択信号）によって、Ａ局と
同じ暗号キーコードを発生する。Ｂ局は、呼出信号に対
して応答信号ｔをＡ局へ出力する。応答信号ｔに対して
Ａ局は回線接続要求信号ｕをＢ局へ出力し、回線接続要
求信号ｕに対してＢ局は回線接続許可信号ｖをＡ局へ出
力し、回線接続されて通話状態となる。FIG. 2 is a flow chart showing an example of a communication procedure by the apparatus of FIG. FIG. 2 shows a case where a call is sent from station A. In this figure, the dialing is made on the side of the A station, and the calling signal (e + d) is output to the B station. At this time, the A station side generates the encryption key code b by the A station selection signal e and the dialed B station selection signal d.
On the other hand, the B station side receives the call signal and receives the call. At this time, the A station selection signal d is received, and by the A station selection signal d and the B station selection signal e (in the B station, the own station selection signal), Generates the same encryption key code as the station. Station B outputs a response signal t to station A in response to the calling signal. In response to the response signal t, the station A outputs the line connection request signal u to the station B, and in response to the line connection request signal u, the station B outputs the line connection permission signal v to the station A. Becomes
【００１１】[0011]
【発明の効果】以上説明したように本発明によれば、発
信時は自局の選択信号とダイヤルした相手局の選択信号
とによって、発信時は自局の選択信号と受信した相手局
の選択信号とによって、自局および相手局は自動的に同
じ暗号キーコードを設定することができる。したがっ
て、通信の度に暗号キーコードを設定することなく、ダ
イヤリングの動作だけで容易に暗号化通信ができるとい
う効果がある。As described above, according to the present invention, when a call is made, the selection signal of the own station and the selection signal of the partner station dialed are used. The signal enables the self station and the opposite station to automatically set the same encryption key code. Therefore, there is an effect that encrypted communication can be easily performed only by a dialing operation without setting an encryption key code for each communication.
【図１】本発明の一実施例によるデータ信号暗号化通信
端末装置のブロック図である。FIG. 1 is a block diagram of a data signal encryption communication terminal device according to an embodiment of the present invention.
【図２】図１の装置による通信手順の一例を示すフロー
チャートである。FIG. 2 is a flowchart showing an example of a communication procedure by the device of FIG.
【図３】従来のデータ信号暗号化通信端末装置のブロッ
ク図である。FIG. 3 is a block diagram of a conventional data signal encryption communication terminal device.
１ 入力端子 ２ 暗号器 ３ 暗号キーコード発生器 ４ 発着信呼出応答回路 ５ 切替器 ６ ダイヤルキー ７ 自局選択信号メモリ部 ８ 回線出力端子 ９ 回線入力端子 １０ 解読器 １１ 出力端子 1 input terminal 2 encryption device 3 encryption key code generator 4 outgoing / incoming call response circuit 5 switching device 6 dial key 7 own station selection signal memory 8 line output terminal 9 line input terminal 10 decryption device 11 output terminal
Claims (1)
り暗号化データ信号を出力する暗号器と、暗号化データ
信号を入力し前記暗号キーコードにより解読しデータ信
号を出力する解読器と、相手局選択信号を発生するダイ
ヤルキー部と、あらかじめ登録される自局選択信号を保
持するメモリ部と、自局発信により前記ダイヤルキー部
から発生される相手局選択信号と前記自局選択信号とを
相手局側回線に送信し相手局からの応答信号の着信によ
り前記暗号器の出力側と前記解読器の入力側とを前記相
手側回線側に回線接続し、自局着信により相手局からの
自局選択信号と相手局選択信号とを受信した時は応答信
号を相手局に送信すると同時に前記回線接続を行う発着
信呼出応答回路と、前記ダイヤルキー部の相手局選択信
号と前記相手局からの相手局選択信号との一方と前記メ
モリ部の自局選択信号とにより暗号パターンを決定し前
記暗号キーコードを発生する暗号キーコード発生器とを
備えることを特徴とするデータ信号暗号化通信端末装
置。1. An encryptor for inputting a data signal and outputting an encrypted data signal with an encryption key code; a decryptor for inputting an encrypted data signal and decrypting with the encryption key code and outputting a data signal; A dial key section for generating a selection signal, a memory section for holding a pre-registered own station selection signal, a partner station selection signal generated from the dial key section by the origination of the own station and the own station selection signal The output side of the encryption device and the input side of the decryption device are connected to the other party's line side by receiving a response signal from the other party's station by sending to the other party's line, and receiving the own station from the other station When a selection signal and a partner station selection signal are received, a response signal is sent to the partner station, and at the same time, an outgoing / incoming call response circuit for connecting the line, a partner station selection signal of the dial key section and the partner station And an encryption key code generator for generating an encryption key code by determining an encryption pattern according to one of the other station selection signal and the own station selection signal of the memory section. apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4222370A JPH0669917A (en) | 1992-08-21 | 1992-08-21 | Data signal ciphering communication terminal equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4222370A JPH0669917A (en) | 1992-08-21 | 1992-08-21 | Data signal ciphering communication terminal equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0669917A true JPH0669917A (en) | 1994-03-11 |
Family
ID=16781291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4222370A Pending JPH0669917A (en) | 1992-08-21 | 1992-08-21 | Data signal ciphering communication terminal equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0669917A (en) |
-
1992
- 1992-08-21 JP JP4222370A patent/JPH0669917A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6266418B1 (en) | Encryption and authentication methods and apparatus for securing telephone communications | |
| US6907123B1 (en) | Secure voice communication system | |
| US5465300A (en) | Secure communication setup method | |
| JPH10242956A (en) | Privacy telephone set | |
| US6356638B1 (en) | Radio wireline interface and method for secure communication | |
| US7023997B1 (en) | Secure messaging communication system | |
| KR100287674B1 (en) | Communication method | |
| WO1990006029A1 (en) | Adaptive data ciphering/deciphering apparatus and data communication system employing said apparatus | |
| JPH0669917A (en) | Data signal ciphering communication terminal equipment | |
| JPH0370327A (en) | Privacy call terminal equipment | |
| JPH05122217A (en) | Ciphering communication method | |
| JPH06152587A (en) | Method and device for digital communication | |
| JPH09149023A (en) | Information communication processor and information communication processing method | |
| JPS59134939A (en) | Privacy telephone system | |
| JPH09130618A (en) | Facsimile equipment | |
| JPH0818657A (en) | Digital cordless telephone set | |
| JPH05102960A (en) | Cipher communication system | |
| JP2578017B2 (en) | Secret telephone device | |
| JP3301438B2 (en) | Secret telephone device | |
| KR100856625B1 (en) | System and Method for Transceiving Messages between the Private Branch Exchanges | |
| JPH08289365A (en) | Method and system for privacy telephone in radio telephony system | |
| JPH02210936A (en) | Cryptographic key delivery method | |
| JPH05130099A (en) | Ciphering talking system | |
| JPH04297154A (en) | Privacy telephone set | |
| JPH05336076A (en) | Secrecy telephone set and secrecy method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20000118 |