JPH03241937A - Individual information transmission system - Google Patents

Individual information transmission system

Info

Publication number
JPH03241937A
JPH03241937A JP2038887A JP3888790A JPH03241937A JP H03241937 A JPH03241937 A JP H03241937A JP 2038887 A JP2038887 A JP 2038887A JP 3888790 A JP3888790 A JP 3888790A JP H03241937 A JPH03241937 A JP H03241937A
Authority
JP
Japan
Prior art keywords
terminal
encryption key
terminal number
individual information
stored
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
Application number
JP2038887A
Other languages
Japanese (ja)
Inventor
Kimiharu Tokunaga
徳永 公治
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP2038887A priority Critical patent/JPH03241937A/en
Publication of JPH03241937A publication Critical patent/JPH03241937A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To send individual information from a central equipment to a terminal equipment safely via a communication line by storing a common cryptographic key and a tentative terminal number to a terminal equipment in advance and sending a specific cryptographic key and a formal terminal equipment number depending on a common cryptographic key from the central device in the case of using the terminal equipment. CONSTITUTION:A cryptographic section 12 of a central device 1 reads a common cryptographic key stored in an information database 11, reads a specific cryptographic key for each terminal equipment and a formal terminal number of the like and gives a tentative terminal number and ciphers the result by using a common cryptographic key and sends the result to the terminal equipment 2. The terminal equipment 2 uses a reception section 21 to receive the information and to send the cryptographic individual information to a cryptography decoding section 22. On the other hand, The common cryptographic key and the tentative terminal number are stored in advance in the individual information storage section 23 and the cryptographic decoding section 22 reads the common cryptographic key from the individual information storage section 23 in advance, then the cryptographic individual information is decoded by using the common cryptographic key. Thus, the individual information is sent and stored in the terminal equipment 5.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は個別情報伝送方式に関し、特に中央装置から端
末装置へ通信回線を介して端末番号及び暗号キー等の個
別情報を伝送し記憶させる個別情報伝送方式に関する。
[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an individual information transmission system, and particularly to an individual information transmission system that transmits and stores individual information such as a terminal number and an encryption key from a central device to a terminal device via a communication line. Concerning information transmission methods.

〔従来の技術〕[Conventional technology]

自動車電話等においては、各端末装置毎に端末番号が付
与されており、この端末番号は各端末装置における自局
信号の識別に、また発信にともなう料金課金等に使用さ
れる。このため、端末番号は第3者に悪用されないよう
にして各端末装置に記憶させている。
In car telephones and the like, a terminal number is assigned to each terminal device, and this terminal number is used for identifying the own station signal in each terminal device and for billing charges associated with outgoing calls. For this reason, the terminal number is stored in each terminal device in a manner that prevents it from being misused by a third party.

従来、暗号化された端末番号及びこれを解読するための
暗号キー等の個別情報を端末装置に伝送し記憶させる個
別情報伝送方式としては、(a)文書によって使用者に
通知し使用者が端末装置へ入力する方式、(b)各端末
装置に共通の暗号キーをあらかじめ記憶させておき、中
央装置では共通の暗号キーに対応して暗号化して伝送し
記憶させる方式、(c)各端末装置毎に固有の暗号キー
及び仮の端末番号を製造時にあらがじめ記憶させておき
、中央装置では正式の端末番号を各端末装置固有の暗号
キーで暗号化して伝送し記憶させる方式等がある。
Conventionally, as an individual information transmission method in which individual information such as an encrypted terminal number and an encryption key for decoding it is transmitted to and stored in a terminal device, (a) the user is notified in a document and the user (b) A method in which a common encryption key is stored in advance in each terminal device, and the central device encrypts it in accordance with the common encryption key, transmits it, and stores it; (c) Each terminal device There is a method in which a unique encryption key and a temporary terminal number are memorized in advance at the time of manufacture for each terminal device, and the central device encrypts the official terminal number with the encryption key unique to each terminal device, transmits it, and stores it. .

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

上述した(a>の場合は、使用者が織末装置を購入後、
個別情報を文書で入手して端末装置に入力するので、時
間がかかるばかりでなく入力ミスが生じることもあり、
また、文書の取扱いに注意を要するという欠点がある。
In the case of (a) mentioned above, after the user purchases the weaving device,
Obtaining individual information in writing and inputting it into a terminal device not only takes time but can also lead to input errors.
Another disadvantage is that documents must be handled with care.

(b)の場合は、各端末装置に共通の暗号キーを使用す
るので、暗号キーが第3者に知られると全ての端末装置
において個別情報が解読されてしまう可能性があるとい
う欠点がある。(c)の場合は、各端末装置毎に相異な
る暗号キーを使用するので、中央装置では各端末装置の
個別情報を、使用されているものと使用されていないも
のとを区別して管理する必要があり、管理が複雑になる
ばかりでなく暗号キーを端末装置に記憶させる製造者側
での管理を厳重に行う必要があるという欠点がある。
In case (b), a common encryption key is used for each terminal device, so if the encryption key is known to a third party, the individual information may be decrypted on all terminal devices, which is a drawback. . In case (c), a different encryption key is used for each terminal device, so the central device needs to manage the individual information of each terminal device by distinguishing between used and unused information. This not only complicates management, but also requires strict management by the manufacturer who stores the encryption key in the terminal device.

本発明の目的は、個別情報を中央装置から通信回線を介
して端末装置へ安全かつ確実に伝送し記憶させることの
できる個別情報伝送方式を提供することにある。
An object of the present invention is to provide an individual information transmission system that can safely and reliably transmit and store individual information from a central device to a terminal device via a communication line.

〔課題を解決するための手段〕[Means to solve the problem]

本発明の個別情報伝送方式は、中央装置から送信される
各端末装置毎の端末番号を付与され暗号化された信号を
受信する端末装置に対して事前に前記端末番号を前記中
央装置から伝送して記憶させる個別情報伝送方式におい
て、前記中央装置は、信号の暗号化及び解読で使用する
ための前記各端末装置に共通の共通暗号キー及び前記各
端末装置に固有の固有暗号キー並びに前記端末番号をそ
れぞれ記憶する記憶手段と、前記記憶手段に記憶されて
いる前記共通暗号キー及び前記固有暗号キーの内いずれ
か一方の暗号キーを読出して前記一方の暗号キーで前記
記憶手段に記憶されている信号を続出して暗号化する暗
号化手段を備え、また、前記端末装置は、前記一方の暗
号キー及び前記端末番号をそれぞれ記憶する端末側記憶
手段と、前記端末側記憶手段に記憶されている前記一方
の暗号キーを読出して信号を解読する暗号解読手段と、
前記暗号解読手段によって解読された前記端末番号と前
記端末側記憶手段に記憶されている前記端末番号とを照
合し一致する場合のみ前記暗号解読手段を動作させる端
末番号照合手段と4前記暗号解読手段によって解読され
た信号に応じて前記端末側記憶手段及び前記暗号解読手
段並びに前記端末番号照合手段を制御する制御手段を備
え、前記端末側記憶手段にあらかじめ前記共通暗号キー
を記憶させておき、前記中央装置から前記端末番号及び
前記固有暗号キーを前記共通暗号キーで暗号化して送信
させ、前記端末装置では前記端末側記憶手段にあらかじ
め記憶させておいた前記共通暗号キーで前記端末番号及
び前記固有暗号キーを解読して前記端末側記憶手段にそ
れぞれ記憶させることを特徴とする。
The individual information transmission method of the present invention transmits the terminal number from the central device in advance to a terminal device that receives an encrypted signal assigned a terminal number for each terminal device transmitted from the central device. In the individual information transmission method, the central device stores a common encryption key common to each of the terminal devices, a unique encryption key unique to each of the terminal devices, and the terminal number for use in signal encryption and decoding. a storage means for storing each of the above, and reading out one of the common encryption key and the unique encryption key stored in the storage means and storing the one encryption key in the storage means. The terminal device includes an encryption means for sequentially encrypting a signal, and the terminal device includes a terminal-side storage means for storing the one encryption key and the terminal number, respectively, and a terminal-side storage means for storing the one encryption key and the terminal number. a code deciphering means for reading out the one code key and decoding the signal;
4. Terminal number verification means that compares the terminal number decrypted by the decryption means with the terminal number stored in the terminal side storage means and operates the decryption means only when they match; and 4. the decryption means. control means for controlling the terminal-side storage means, the decryption means, and the terminal number matching means according to a signal decrypted by the terminal-side storage means, the common encryption key being stored in advance in the terminal-side storage means; The central device encrypts and transmits the terminal number and the unique encryption key using the common encryption key, and the terminal device encrypts the terminal number and the unique encryption key using the common encryption key previously stored in the terminal side storage means. The present invention is characterized in that the encryption keys are decrypted and stored in the terminal storage means.

〔実施例〕〔Example〕

次に図面を参照して本発明を説明する。 Next, the present invention will be explained with reference to the drawings.

第1図は本発明の個別情報伝送方式の一実施例を示すブ
ロック図である。中央装置1は、各端末装置の暗号キー
及び端末番号等の個別情報を記憶している情報データベ
ース部11.入力する信号を暗号化して出力する暗号化
部12.暗号化された信号を端末装置2ヘアンテナ3を
介して送信する送信部13を有している。端末装置2は
、中央装置1からの電波をアンテナ4を介して受信する
受信部21.暗号化された信号を解読する暗号解読部2
2.暗号キー及び端末番号等の個別情報を記憶する個別
情報記憶部23.端末番号を記憶されている端末番号と
照合し一致しているときにのみ暗号解読部22を動作さ
せる端末番号照合部24、及び個別情報に応じて各部を
制御する制御部25を有している。
FIG. 1 is a block diagram showing an embodiment of the individual information transmission system of the present invention. The central device 1 includes an information database section 11 that stores individual information such as encryption keys and terminal numbers of each terminal device. Encryption unit 12 that encrypts the input signal and outputs the encrypted signal. It has a transmitter 13 that transmits an encrypted signal to the terminal device 2 via the antenna 3. The terminal device 2 includes a receiving section 21 . which receives radio waves from the central device 1 via the antenna 4 . Decryption unit 2 that decodes the encrypted signal
2. Individual information storage unit 23 that stores individual information such as encryption keys and terminal numbers. It has a terminal number verification section 24 that compares the terminal number with a stored terminal number and operates the decryption section 22 only when they match, and a control section 25 that controls each section according to individual information. .

次に動作を説明する。Next, the operation will be explained.

端末装置2の個別情報記憶部9には、製造時点において
あらかじめ各端末装置に共通の共通暗号キー及び各端末
装置毎に付与された仮の端末番号を記憶させておく、ま
ず、端末装置2を使用するに際し、中央装W1の暗号化
部12は、情報データベース部11に記憶されている共
通暗号キーを読出し、更に、各端末装置毎の固有暗号キ
ー及び正式の端末番号等の個別情報を読出し、仮の端末
番号を付与して共通暗号キーによって暗号化し送信部1
3及びアンテナ3を介して端末装置2へ送信する。
The individual information storage unit 9 of the terminal device 2 stores in advance a common encryption key common to each terminal device and a temporary terminal number assigned to each terminal device at the time of manufacture. When used, the encryption unit 12 of the central unit W1 reads out the common encryption key stored in the information database unit 11, and further reads individual information such as the unique encryption key and official terminal number for each terminal device. , assigns a temporary terminal number, encrypts it with a common encryption key, and transmits it to transmitter 1.
3 and the antenna 3 to the terminal device 2.

端末装置2は、中央装置1からの電波をアンテナ4を介
して受信部21で受信し、暗号化された個別情報を暗号
解読部22へ送出する。一方、個別情報記憶部23には
、共通暗号キー及び仮の端末番号があらかじめ記憶され
ており、暗号解読部22は事前に個別情報記憶部23か
ら共通暗号キーを読出しているので、共通暗号キーによ
って暗号化された個別情報を解読することができる。暗
号解読部22は、仮の端末番号を解読して制御部25へ
送出する。制御部25は仮の端末番号を端末番号照合部
24へ転送する。端末番号照合部24は、事前に個別情
報記憶部23に記憶されている仮の端末番号を制御部2
5を介して記憶しており、これと照合し一致していると
きにのみ暗号解読部22を動作させるので、引続いて信
号の解読を行って固有暗号キー及び正式の端末番号制御
部8へ送出する。制御部8は、個別情報記憶部23に記
憶されている共通暗号キー及び仮の端末番号を消去し、
新たに固有暗号キー及び正式の端末番号を記憶する。こ
のようにして個別情報が端末装置5へ伝送されて記憶さ
れる。
The terminal device 2 receives radio waves from the central device 1 via the antenna 4 at the receiving section 21, and sends the encrypted individual information to the decryption section 22. On the other hand, the common encryption key and the temporary terminal number are stored in the individual information storage section 23 in advance, and the decryption section 22 reads out the common encryption key from the individual information storage section 23 in advance. It is possible to decipher individual information encrypted by The decryption unit 22 decrypts the temporary terminal number and sends it to the control unit 25. The control unit 25 transfers the temporary terminal number to the terminal number verification unit 24. The terminal number verification unit 24 inputs the temporary terminal number stored in the individual information storage unit 23 in advance to the control unit 2.
5, and the code decryption unit 22 is operated only when it is checked and matches, so the signal is subsequently decrypted and sent to the unique code key and the official terminal number control unit 8. Send. The control unit 8 erases the common encryption key and temporary terminal number stored in the individual information storage unit 23,
Newly store the unique encryption key and official terminal number. In this way, the individual information is transmitted to the terminal device 5 and stored.

個別情報記憶部23に固有暗号キー及び正式の端末番号
が記憶されれば、以後、中央装置1は、端末装置2に対
して端末装置2の固有暗号キーを使用し正式の端末番号
を付与してデータを送信し、端末装置2は、暗号化され
た正式の端末番号及びデータを受信部21で受信し、暗
号解読部22で固有暗号キーを使用して解読し、端末番
号照合部24で端末番号を照合確認して暗号解読部22
を動作させ自局宛のデータのみ受信することができる。
Once the unique encryption key and official terminal number are stored in the individual information storage unit 23, the central device 1 thereafter assigns the official terminal number to the terminal device 2 using the unique encryption key of the terminal device 2. The terminal device 2 receives the encrypted official terminal number and data at the reception section 21, decrypts it at the decryption section 22 using the unique encryption key, and then the terminal device 2 receives the encrypted official terminal number and data at the terminal number verification section 24. Verify the terminal number and decode the code using the decryption unit 22
You can receive only data addressed to your own station.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明の個別情報伝送方式によれば
、端末装置にあらかし共通の暗号キー及び仮の端末番号
を記憶させておき、端末装置の使用に際し、中央装置か
ら共通の暗号キーによって固有の暗号キー及び正式の端
末番号を送信し、端末装置ではこれを受信して記憶する
ので、(a>使用者が端末装置を購入後、個別情報を文
書で入手して端末装置に入力する必要はないので迅速か
つ確実に端末装置に記憶させることができるばかりでな
く文書の取扱いに注意しなくてもよく、(b)共通の暗
号キーを各端末装置固有の暗号キーに替えるので、共通
の暗号キーが第3者に知られても個別情報が解読される
ことはなく、(C)中央装置では共通の暗号キー及び各
端末装置毎の暗号キー及び端末番号を管理すればよいの
で、管理システムが簡易化されるばいうかりでなく製造
者側の管理も厳重に行う必要はないという効果がある。
As explained above, according to the individual information transmission system of the present invention, a common encryption key and a temporary terminal number are stored in the terminal device, and when the terminal device is used, the common encryption key is transmitted from the central device. The unique encryption key and official terminal number are transmitted by the user, and the terminal device receives and stores them. (b) Since the common encryption key is replaced with an encryption key specific to each terminal device, Even if the common encryption key is known to a third party, individual information will not be decrypted, and (C) the central device only needs to manage the common encryption key and the encryption key and terminal number for each terminal device. This not only simplifies the management system, but also eliminates the need for strict management on the manufacturer's side.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の個別情報伝送方式の一実施例を示すブ
ロック図である。 1・・・中央装置、2・・・端末装置、3.4・・・ア
ンテナ、11・・・情報データベース部、12・・・暗
号化部、13・・・送信部。21・・・受信部、22・
・・暗号解読部、23・・・個別情報記憶部、24・・
・端末番号照合部、25・・・制御部。
FIG. 1 is a block diagram showing an embodiment of the individual information transmission system of the present invention. DESCRIPTION OF SYMBOLS 1... Central device, 2... Terminal device, 3.4... Antenna, 11... Information database section, 12... Encryption section, 13... Transmission section. 21... receiving section, 22...
...Cryptography section, 23...Individual information storage section, 24...
- Terminal number verification unit, 25...control unit.

Claims (1)

【特許請求の範囲】[Claims]  中央装置から送信される各端末装置毎の端末番号を付
与され暗号化された信号を受信する端末装置に対して事
前に前記端末番号を前記中央装置から伝送して記憶させ
る個別情報伝送方式において、前記中央装置は、信号の
暗号化及び解読で使用するための前記各端末装置に共通
の共通暗号キー及び前記各端末装置に固有の固有暗号キ
ー並びに前記端末番号をそれぞれ記憶する記憶手段と、
前記記憶手段に記憶されている前記共通暗号キー及び前
記固有暗号キーの内いずれか一方の暗号キーを読出して
前記一方の暗号キーで前記記憶手段に記憶されている信
号を読出して暗号化する暗号化手段を備え、また、前記
端末装置は、前記一方の暗号キー及び前記端末番号をそ
れぞれ記憶する端末側記憶手段と、前記端末側記憶手段
に記憶されている前記一方の暗号キーを読出して信号を
解読する暗号解読手段と、前記暗号解読手段によつて解
読された前記端末番号と前記端末側記憶手段に記憶され
ている前記端末番号とを照合し一致する場合のみ前記暗
号解読手段を動作させる端末番号照合手段と、前記暗号
解読手段によって解読された信号に応じて前記端末側記
憶手段及び前記暗号解読手段並びに前記端末番号照合手
段を制御する制御手段を備え、前記端末側記憶手段にあ
らかじめ前記共通暗号キーを記憶させておき、前記中央
装置から前記端末番号及び前記固有暗号キーを前記共通
暗号キーで暗号化して送信させ、前記端末装置では前記
端末側記憶手段にあらかじめ記憶させておいた前記共通
暗号キーで前記端末番号及び前記固有暗号キーを解読し
て前記端末側記憶手段にそれぞれ記憶させることを特徴
とする個別情報伝送方式。
In an individual information transmission method in which the terminal number is transmitted from the central device in advance and stored in the terminal device that receives the encrypted signal assigned the terminal number for each terminal device transmitted from the central device, The central device includes storage means for storing a common encryption key common to each of the terminal devices, a unique encryption key unique to each of the terminal devices, and the terminal number for use in signal encryption and decoding;
A cipher that reads out either one of the common encryption key and the unique encryption key stored in the storage means, and reads and encrypts the signal stored in the storage means using the one encryption key. Further, the terminal device includes a terminal-side storage means for storing the one encryption key and the terminal number, respectively, and a terminal-side storage means for reading out the one encryption key stored in the terminal-side storage means and transmitting the signal. A code deciphering means for deciphering the code is compared with the terminal number deciphered by the code deciphering means and the terminal number stored in the terminal side storage means, and the code deciphering unit is operated only when they match. a terminal number verification means; and a control means for controlling the terminal side storage means, the decryption means, and the terminal number verification means according to the signal decoded by the decryption means; A common encryption key is stored, the terminal number and the unique encryption key are encrypted and transmitted from the central device using the common encryption key, and the terminal device stores the above-mentioned terminal number and the unique encryption key in advance in the terminal side storage means. An individual information transmission system characterized in that the terminal number and the unique encryption key are decoded using a common encryption key and stored in the terminal storage means.
JP2038887A 1990-02-19 1990-02-19 Individual information transmission system Pending JPH03241937A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2038887A JPH03241937A (en) 1990-02-19 1990-02-19 Individual information transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2038887A JPH03241937A (en) 1990-02-19 1990-02-19 Individual information transmission system

Publications (1)

Publication Number Publication Date
JPH03241937A true JPH03241937A (en) 1991-10-29

Family

ID=12537723

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2038887A Pending JPH03241937A (en) 1990-02-19 1990-02-19 Individual information transmission system

Country Status (1)

Country Link
JP (1) JPH03241937A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07307733A (en) * 1994-05-11 1995-11-21 Nec Corp Scrambled communication system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07307733A (en) * 1994-05-11 1995-11-21 Nec Corp Scrambled communication system

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