JPS63310257A - Security system for modem for subscriber telephone line - Google Patents
Security system for modem for subscriber telephone lineInfo
- Publication number
- JPS63310257A JPS63310257A JP62146675A JP14667587A JPS63310257A JP S63310257 A JPS63310257 A JP S63310257A JP 62146675 A JP62146675 A JP 62146675A JP 14667587 A JP14667587 A JP 14667587A JP S63310257 A JPS63310257 A JP S63310257A
- Authority
- JP
- Japan
- Prior art keywords
- modem
- result
- calculation
- random character
- terminal
- 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
- 238000000034 method Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、加入電話回線を利用したデータ通信システム
におけるセキュリティ方式に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a security system in a data communication system using subscriber telephone lines.
（従来の技術）
従来、この種のセキュリティ方式は、通信回線を確立し
た後で、利用者側から単純なパスワードを入力してセン
タ側へ送信し、これを照合することにより、利用者の正
当性のチェックを行っていた。(Prior art) Conventionally, in this type of security system, after establishing a communication line, the user enters a simple password and sends it to the center, which verifies the user's authenticity. I was doing a sex check.
（発明が解決しようとする問題点）
上述した従来のセキュリティ方式は、単純なパスワード
を照合するだけの簡単なチェックによるものである。従
って、特定利用者以外の者か何らかの機会又は方法でパ
スワードを入手したら、１−ν定のシステムに対して本
来なら利用できない者によるアクセスが生じるという問
題点がある。(Problems to be Solved by the Invention) The conventional security method described above is based on a simple check that only verifies a simple password. Therefore, if a person other than the specified user obtains the password through some opportunity or method, there is a problem that the 1-v fixed system may be accessed by a person who should not be able to use it.
（問題点を解決するための手段）
上述の問題点を解決するために本発明が提供する加入電
話回線用モデムのセキュリティ方式は、端末とセンタと
を加入電話回線を介して接続するデータ通信システムで
利用者の正当性をチェックするセキュリティ方式であっ
て、ランダム文字列を発生する手段と、このランダム文
字列を前記端末側モデムへ送信する手段と、前記ランダ
ム文字列を所定の計算式に代入して結果を算出する手段
と、前記端末側モデムから送信された算出結果と。(Means for Solving the Problems) In order to solve the above-mentioned problems, the security system of the subscriber telephone line modem provided by the present invention is applicable to a data communication system that connects a terminal and a center via a subscriber telephone line. A security method for checking the validity of a user by means of a means for generating a random character string, a means for transmitting the random character string to the terminal-side modem, and a means for substituting the random character string into a predetermined calculation formula. means for calculating a result, and a calculation result transmitted from the terminal side modem.
自らの算出結果とを照合する手段と、前記照合手段によ
り前記２つの算出結果が一致した場合にデータ通信を許
可する信号を前記端末側モデムへ送信する手段とを前記
センタ側モデムに備え、前記センタ側モデムから送信さ
れた前記ランダム文字列を前記センタ側モデムにおける
前記計算式と同じ計算式に代入して結果を算出する手段
と、この算出結果を前記センタ側モデムへ送信する手段
とを前記端末側モデムに備えることを特徴とする。The center-side modem is provided with means for comparing the calculation results with its own calculation results, and means for transmitting a signal to the terminal-side modem to permit data communication when the two calculation results match by the comparison means, means for calculating a result by substituting the random character string transmitted from the center-side modem into the same calculation formula as the calculation formula in the center-side modem; and means for transmitting the calculation result to the center-side modem. It is characterized by being provided in the terminal side modem.
（実施例）
以下、本発明の一実施例について図面を参照して説明す
る。(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.
第１図は本発明の一実施例の加入電話回線用モデムのセ
キュリティ方式の動作シーゲンス図である。FIG. 1 is an operational sequence diagram of a security system for a subscriber telephone line modem according to an embodiment of the present invention.
例えば、第１図に示すように、端末側とセンタ側とを加
入電話回線で接続してデータ通信を行う場合に、まず、
端末側モデム１から端末側モデム１へ発呼して回線を接
続する。回線接続後、センタ側モデム２は、ランダム文
字列を発生させて端末側モデム１へ送信する。このとき
同時に、このランダム文字列から所定の計算式により結
果を算出する。センタ側モデム２から送信されたランダ
ム文字列を受信した端末側モデム１は、このランダム文
字列からセンタ側モデム２における所定の計算式と同じ
計算式により計算し、その算出結果をセンタ側モデム２
へ送信する。For example, as shown in Figure 1, when data communication is performed by connecting a terminal side and a center side via a subscriber telephone line, first,
A call is made from the terminal side modem 1 to the terminal side modem 1 to connect the line. After the line is connected, the center modem 2 generates a random character string and transmits it to the terminal modem 1. At the same time, a result is calculated from this random character string using a predetermined calculation formula. The terminal modem 1 that receives the random character string sent from the center modem 2 calculates the random character string using the same formula as the predetermined calculation formula in the center modem 2, and sends the calculation result to the center modem 2.
Send to.
センタ側モデム２では、自ら算出した結果と端末側モデ
ム１から受信した算出結果とを照合し、一致した場合に
は端末側モデム１へＡＣＫを返して、データ通信を開始
する。一致しない場合は回線を切断する。The center modem 2 compares its own calculation results with the calculation results received from the terminal modem 1, and if they match, it returns ACK to the terminal modem 1 and starts data communication. If they do not match, disconnect the line.
（発明の効果）
以上に説明したように本発明は、ランダム文字列を発生
させて、その文字列を所定の計算式で計算することによ
り算出した結果を照合して、利用者の正当性をチェック
する。従って、この所定の計算式を持たないモデムから
の不正アク士スを防止できるという効果がある。(Effects of the Invention) As explained above, the present invention generates a random character string, calculates the character string using a predetermined formula, and compares the calculated results to verify the validity of the user. To check. Therefore, it is possible to prevent unauthorized access from modems that do not have this predetermined calculation formula.
また、通信回線に割込まれてセンタ側へ送信する照合値
を知られてしまったとしても、所定の計算式に代入する
値がランダムに発生する本発明においては、利用するご
とに照合値が異なるので、何ら支障を生じない。Furthermore, even if the communication line is interrupted and the verification value to be sent to the center is known, in the present invention, the value to be substituted into the predetermined calculation formula is randomly generated, so the verification value will be changed each time it is used. Since they are different, there will be no problem.
第１図は本発明の一実施例の加入電話回線用モデムのセ
キュリティ方式の動作シーゲンス図である。
１・・・端末側モデム、２・・・センタ側モデム。FIG. 1 is an operational sequence diagram of a security system for a subscriber telephone line modem according to an embodiment of the present invention. 1...Terminal side modem, 2...Center side modem.
Claims (1)
通信システムで利用者の正当性をチェックするセキュリ
ティ方式において、 ランダム文字列を発生する手段と、このランダム文字列
を前記端末側モデムへ送信する手段と、前記ランダム文
字列を所定の計算式に代入して結果を算出する手段と、
前記端末側モデムから送信された算出結果と自らの算出
結果とを照合する手段と、前記照合手段により前記２つ
の算出結果が一致した場合にデータ通信を許可する信号
を前記端末側モデムへ送信する手段とを前記センタ側モ
デムに備え、 前記センタ側モデムから送信された前記ランダム文字列
を前記センタ側モデムにおける前記計算式と同じ計算式
に代入して結果を算出する手段と、この算出結果を前記
センタ側モデムへ送信する手段とを前記端末側モデムに
備えることを特徴とする加入電話回線用モデムのセキュ
リティ方式。[Scope of Claim] A security method for checking the validity of a user in a data communication system that connects a terminal and a center via a subscriber telephone line, comprising: means for generating a random character string; means for transmitting the random character string to a terminal-side modem; and means for calculating the result by substituting the random character string into a predetermined calculation formula;
means for comparing the calculation result transmitted from the terminal-side modem with its own calculation result, and transmitting a signal to the terminal-side modem to permit data communication when the two calculation results match by the comparison means. means for calculating a result by substituting the random character string transmitted from the center modem into the same calculation formula as the calculation formula in the center side modem; A security system for a subscriber telephone line modem, characterized in that the terminal side modem is provided with means for transmitting data to the center side modem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62146675A JPS63310257A (en) | 1987-06-12 | 1987-06-12 | Security system for modem for subscriber telephone line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62146675A JPS63310257A (en) | 1987-06-12 | 1987-06-12 | Security system for modem for subscriber telephone line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63310257A true JPS63310257A (en) | 1988-12-19 |
Family
ID=15413062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62146675A Pending JPS63310257A (en) | 1987-06-12 | 1987-06-12 | Security system for modem for subscriber telephone line |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63310257A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06195024A (en) * | 1991-09-13 | 1994-07-15 | American Teleph & Telegr Co <Att> | Method for establishment of communication channel and customer device |
| JPH07115413A (en) * | 1993-10-18 | 1995-05-02 | Nec Corp | Mobile communication terminal authentication system |
| GB2366966A (en) * | 2000-09-07 | 2002-03-20 | Swivel Technologies Ltd | Verifying the identity of a device or user in an electronic communications environment |
| US7043635B1 (en) | 2000-09-15 | 2006-05-09 | Swivel Secure Limited | Embedded synchronous random disposable code identification method and system |
| US7392388B2 (en) | 2000-09-07 | 2008-06-24 | Swivel Secure Limited | Systems and methods for identity verification for secure transactions |
-
1987
- 1987-06-12 JP JP62146675A patent/JPS63310257A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06195024A (en) * | 1991-09-13 | 1994-07-15 | American Teleph & Telegr Co <Att> | Method for establishment of communication channel and customer device |
| JP2675494B2 (en) * | 1991-09-13 | 1997-11-12 | エイ・ティ・アンド・ティ・コーポレーション | Authentication method for establishing communication channel and mobile device |
| JPH07115413A (en) * | 1993-10-18 | 1995-05-02 | Nec Corp | Mobile communication terminal authentication system |
| GB2366966A (en) * | 2000-09-07 | 2002-03-20 | Swivel Technologies Ltd | Verifying the identity of a device or user in an electronic communications environment |
| GB2366966B (en) * | 2000-09-07 | 2002-08-07 | Swivel Technologies Ltd | Embedded synchronous random disposable code identification method and system |
| US7392388B2 (en) | 2000-09-07 | 2008-06-24 | Swivel Secure Limited | Systems and methods for identity verification for secure transactions |
| US7043635B1 (en) | 2000-09-15 | 2006-05-09 | Swivel Secure Limited | Embedded synchronous random disposable code identification method and system |
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