JP2002182563A - Electronic sealing system - Google Patents
Electronic sealing systemInfo
- Publication number
- JP2002182563A JP2002182563A JP2000380958A JP2000380958A JP2002182563A JP 2002182563 A JP2002182563 A JP 2002182563A JP 2000380958 A JP2000380958 A JP 2000380958A JP 2000380958 A JP2000380958 A JP 2000380958A JP 2002182563 A JP2002182563 A JP 2002182563A
- Authority
- JP
- Japan
- Prior art keywords
- electronic
- data
- seal
- unit
- request
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は電子押印システムに
関し、特に電子署名を行う者の意に反する電子書類に電
子印鑑の押印を行うことを防止した電子押印システムに
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic seal system, and more particularly, to an electronic seal system for preventing an electronic seal stamp from being imprinted on an electronic document contrary to a person who performs an electronic signature.
【０００２】[0002]
【従来の技術】近年、インターネットに代表されるよう
に、ネットワーク基盤の構築が進み、文書等も電子デー
タでやり取りする機会が増加した。また、電子化された
文書を認証するため或いは電子化文書の安全性を確保す
るために電子署名或いは電子印鑑押印が行われており、
一般的には署名対象文書のハッシュ情報を暗号化し、そ
の情報を文書に添付することにより行われている。図３
は従来の電子押印システムを示す図であり、例えば、電
子化された文書に対し、インターネットを介して電子印
鑑を押印する場合を想定して説明を行う。２０は電子印
鑑を押印すべきデータ２０ａが保管されたサーバー、２
２は電子印鑑押印者（以下、押印者）が保有する電子印
鑑装置、２６は当該押印者が接続しているプロバイダの
ＰＣであり、電子印鑑装置２２は例えば押印者が利用し
ているブラウザがその機能を有している。2. Description of the Related Art In recent years, as represented by the Internet, the construction of a network infrastructure has been advanced, and opportunities for exchanging documents and the like by electronic data have increased. In addition, in order to authenticate the digitized document or to secure the security of the digitized document, an electronic signature or an electronic seal stamp is performed.
Generally, hash information of a document to be signed is encrypted, and the information is attached to the document. FIG.
FIG. 1 is a diagram showing a conventional electronic seal system. For example, a description will be given on the assumption that a digital document is stamped with an electronic seal stamp via the Internet. Reference numeral 20 denotes a server on which data 20a to be stamped with an electronic seal are stored.
Reference numeral 2 denotes an electronic seal stamp device held by the electronic seal stamper (hereinafter, “sealant”), reference numeral 26 denotes a PC of a provider to which the seal stamper is connected, and the electronic seal stamp device 22 is, for example, a browser used by the seal stamper. It has that function.
【０００３】例えば、押印要求元となるプロバイダでは
所望の電子化データが保管されたサーバー２０にデータ
要求を行い、サーバー２０はデータ応答としてデータ２
０ａを出力する。電子化データを受領したプロバイダ２
６では押印対象文書のハッシュ情報を抽出し、該抽出さ
れたハッシュ情報に対して押印を行うよう押印者の電子
印鑑装置２２に押印要求を行い、電子印鑑装置２２では
要求を受け付け、更に暗号化（秘密鍵による暗号化等）
を行い、押印応答としてプロバイダ２６に出力とする。
通常、電子署名は文書の真正性を保証するために電子デ
ータである文書を作成した者又は確認した者がハッシュ
情報を当該電子データから抽出し、当該抽出したハッシ
ュ情報に対して暗号化処理を行うので、署名が行われる
対象文書を確認し署名を行うことができる。[0003] For example, a provider as a seal request source issues a data request to a server 20 in which desired digitized data is stored, and the server 20 sends data 2 as a data response.
0a is output. Provider 2 who received the digitized data
In step 6, the hash information of the document to be stamped is extracted, a seal request is made to the sealer's electronic seal stamp device 22 to seal the extracted hash information, and the electronic seal stamp device 22 accepts the request and further encrypts. (Encryption with secret key, etc.)
And outputs it to the provider 26 as a seal response.
Normally, a digital signature is created by a person who has created or confirmed a document, which is electronic data, in order to guarantee the authenticity of the document.Hash information is extracted from the electronic data, and encryption processing is performed on the extracted hash information. Therefore, the target document to be signed can be confirmed and signed.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、予め定
められたフォーマットからなる文書データであって、押
印者が最終的に電子データを操作できないものに押印を
求められる場合を想定すると、押印対象文書データから
ハッシュ情報を抽出するのは押印要求元（プロバイダ
等）であるため、例えば、悪意を持ったプロバイダやハ
ッキング等によりプロバイダを介して第三者が押印対象
文書をすり替え、ハッシュ情報を抽出し、押印者に押印
を促すケースも生じる虞があり、このような場合であっ
ても、押印者は要求受付部にて受領したデータが真に押
印対象のデータに基づくものであるか否かを判別するこ
とができないので、押印者の意図とは異なる文書に押印
する可能性があるという問題点があった。本発明は、上
記のような従来の問題点を解決するためになされたもの
であって、押印を求められる際に、押印要求元における
不正操作を防止し、押印対象文書のすり替え等を行うこ
とができない電子押印システムを提供することを課題と
する。However, assuming a case in which document data having a predetermined format and in which the sealer cannot finally operate the electronic data is required to seal the document data, the document data to be stamped is considered. It is the seal requester (provider or the like) that extracts the hash information from, for example, a third party replaces the seal target document via the provider due to a malicious provider or hacking, and extracts the hash information. There may be cases where the sealer is urged to perform the seal. Even in such a case, the sealer determines whether the data received by the request receiving unit is truly based on the data to be stamped. Therefore, there is a problem in that it is possible to seal a document different from the intention of the sealer. SUMMARY OF THE INVENTION The present invention has been made to solve the above-described conventional problems, and it is an object of the present invention to prevent improper operation at a seal requesting source when a seal is requested, and to replace a seal target document. An object of the present invention is to provide an electronic seal system that cannot perform the operation.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
に、本発明に係る電子押印システムの請求項１記載の発
明は、電子データに電子署名等の押印を要求する押印要
求部と、押印対象である電子データを保管したデータ保
管部と、電子データに押印を行う電子署名部とを備え、
前記押印要求部は押印対象を特定するための識別子を前
記電子署名部に出力し、該電子署名部は前記識別子に基
づいて前記データ保管部より電子データを受領して該電
子データより電子署名を作成すると共に、該作成された
電子署名を前記電子データに内蔵させて押印要求部に返
還したことを特徴とする。According to a first aspect of the present invention, there is provided an electronic stamping system according to the present invention, comprising: a stamp requesting unit for requesting a stamp of an electronic data such as an electronic signature; A data storage unit that stores the electronic data that is the target, and an electronic signature unit that seals the electronic data,
The seal requesting unit outputs an identifier for specifying a seal target to the electronic signature unit. The electronic signature is created, and the created electronic signature is embedded in the electronic data and returned to the seal requesting unit.
【０００６】本発明に係る電子押印システムの請求項２
記載の発明は、前記請求項１記載の発明において、前記
電子印鑑部は押印された電子印鑑と共にデータ保管部よ
り受け取った押印対象データを前記押印要求部に返還し
たことを特徴とする。[0006] Claim 2 of the electronic seal system according to the present invention
According to a preferred embodiment of the present invention, in the first aspect of the present invention, the electronic seal stamp unit returns the stamp target data received from the data storage unit together with the stamped electronic seal stamp to the seal request unit.
【０００７】本発明に係る電子押印システムの請求項３
記載の発明は、前記請求項１又は２記載の発明におい
て、前記識別子は、押印対象データを特定するための記
号、数値、或いは文書名等であることを特徴とする。[0007] Claim 3 of the electronic seal system according to the present invention.
According to the invention described in the first or second aspect, the identifier is a symbol, a numerical value, a document name, or the like for specifying the data to be stamped.
【０００８】本発明に係る電子押印システムの請求項４
記載の発明は、請求項１〜３記載の発明において、前記
押印部は押印対象データからハッシュ情報を抽出し、該
抽出したデータに対して暗号化を行うものであることを
特徴とする。[0008] Claim 4 of the electronic seal system according to the present invention.
The invention described in the above claims is characterized in that, in the invention described in any one of the first to third aspects, the sealing unit extracts hash information from the data to be stamped and encrypts the extracted data.
【０００９】[0009]
【発明の実施の形態】以下、図面に示した実施例に基づ
いて本発明を詳細に説明する。図１は本発明に係る電子
押印システムの構成を示す図であり、上記説明と同様に
電子化された文書に対し、インターネットを介して電子
印鑑を押印する場合を想定して説明を行う。１は電子印
鑑を押印すべき押印対象データ１ａが保管されたサーバ
ー（データ保管部）、３は押印者が保有する電子印鑑装
置（電子印鑑部）であって、押印要求受付部３ａ、読み
出し制御部３ｂ、押印部（暗号化部）３ｃを備えてい
る。また、５は例えばプロバイダ等の押印要求元であっ
て、押印対象を特定するための識別子を出力する識別子
出力部５ａを有す。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings. FIG. 1 is a diagram showing a configuration of an electronic seal system according to the present invention, and the description will be made on the assumption that a digital document is stamped with an electronic seal stamp via the Internet in the same manner as described above. Reference numeral 1 denotes a server (data storage unit) in which the data 1a to be stamped to be stamped is stored, and 3 denotes an electronic seal stamp device (electronic seal stamp unit) owned by the stamper. A portion 3b and a seal portion (encryption portion) 3c are provided. Reference numeral 5 denotes a seal requesting source such as a provider, which has an identifier output unit 5a for outputting an identifier for specifying a seal target.
【００１０】以下、図１並びに図２に示したフローチャ
ートに基づき本発明に係る電子押印システムを説明す
る。尚、図２のフローチャートにおいて単枠による表記
は押印要求元５の動作、二重枠線による表記は電子印鑑
装置３における動作、八角枠による表記は押印対象文書
データが保管されたサーバー１の動作を表す。Hereinafter, an electronic seal system according to the present invention will be described with reference to the flowcharts shown in FIGS. In the flowchart of FIG. 2, the notation in the single frame indicates the operation of the stamp requesting source 5, the notation in the double border line indicates the operation in the electronic seal stamp device 3, and the notation in the octagonal frame indicates the operation of the server 1 storing the document data to be stamped. Represents
【００１１】まず、押印要求元５は押印を希望する対象
データを特定するための識別子、例えば、記号、数値、
文書名等を内蔵した押印要求を識別子出力部５ａより電
子印鑑装置３に出力し（ステップＳ１）、電子印鑑装置
３の要求受付部３ａが要求を受け付ける（ステップＳ
２）。すると、要求受付部３ａは内蔵された識別子を抽
出し、読み出し制御部３ｂに押印すべき書類の指示を行
い（ステップＳ３）、読み出し制御部３ｂは特定された
データの受け渡しをサーバー１に要求する（ステップＳ
４）。押印対象文書を保管しているサーバー１はデータ
要求が行われると、指定された文書データ１ａを電子印
鑑装置３に出力する（ステップＳ５）。電子印鑑装置３
の読み取り制御部３ｂにて受け取ったデータは、押印部
３ｃに渡され、該暗号化部３ｃにおいてハッシュ情報を
抽出し、かつ該抽出された情報の暗号化が行われ、押印
対象文書の末尾に追加書込するなどして押印対象文書に
添付されて押印要求元５に出力される（ステップＳ６、
Ｓ７、Ｓ８）。押印要求元５では電子印鑑が押印された
文書データを受信し（ステップＳ９）、その後、復号化
等の所望の手続きが行われ文書が認証される。First, the seal requesting source 5 identifies the target data for which the seal is desired, for example, a symbol, a numerical value,
A seal request containing a document name or the like is output from the identifier output unit 5a to the electronic seal stamp device 3 (step S1), and the request receiving unit 3a of the electronic seal stamp device 3 receives the request (step S1).
2). Then, the request receiving unit 3a extracts the built-in identifier, instructs the reading control unit 3b of the document to be stamped (step S3), and the reading control unit 3b requests the server 1 to transfer the specified data. (Step S
4). When a data request is made, the server 1 storing the seal target document outputs the designated document data 1a to the electronic seal stamp device 3 (step S5). Electronic seal stamp device 3
The data received by the read control unit 3b is passed to the sealing unit 3c, the hash information is extracted by the encryption unit 3c, and the extracted information is encrypted. Attached to the document to be stamped by additional writing or the like and output to the stamp requesting source 5 (step S6,
S7, S8). The seal request source 5 receives the document data on which the electronic seal is stamped (step S9), and then performs a desired procedure such as decryption to authenticate the document.
【００１２】すなわち、本発明に係る電子押印システム
では電子印鑑装置３が文書を読み取り、該文書からデー
タを抽出して電子印鑑を押印するための暗号化処理が行
われるので、押印文書のすり替え等を回避することがで
き、セキュリティを向上することができる。That is, in the electronic seal system according to the present invention, the electronic seal stamp device 3 reads a document, extracts data from the document, and performs an encryption process for stamping the electronic seal stamp. Can be avoided, and security can be improved.
【００１３】なお、上記説明においては、電子印鑑装置
３において押印対象であるデータを抽出し、かつ、押印
対象文書に押印データを添付して押印要求元に応答する
例を挙げて説明したが、電子印鑑装置３より電子押印の
みを押印要求元に返送し、押印要求元５がデータ保管サ
ーバ１から所望のデータを読み出し、押印要求元におい
て読み出したデータに電子印鑑部３から受領した電子押
印を添付してもよい。この場合、電子押印を作成するた
めのデータを受け渡す経路が電子印鑑装置３と押印対象
データを保管しているサーバー１間のみとなるので、押
印対象データの誤送による押印の誤りを防ぐこともでき
る。In the above description, an example has been described in which the electronic seal stamp device 3 extracts the data to be stamped, attaches the stamping data to the document to be stamped, and responds to the stamping request source. Only the electronic seal is returned from the electronic seal stamp device 3 to the seal request source, the seal request source 5 reads the desired data from the data storage server 1, and the electronic seal received from the electronic seal stamp unit 3 is read into the read data at the seal request source. May be attached. In this case, since the path for transferring the data for creating the electronic seal is only between the electronic seal stamp device 3 and the server 1 storing the data to be stamped, it is possible to prevent an error in the seal due to erroneous transmission of the data to be sealed. You can also.
【００１４】また、上記説明では押印対象データからハ
ッシュ情報を抽出し、該抽出情報を暗号化した例を挙げ
たが、これに限定するものではなく、文章を特定するた
めの情報であればよい。Further, in the above description, an example was given in which hash information was extracted from the data to be stamped and the extracted information was encrypted. However, the present invention is not limited to this, and any information for specifying a sentence may be used. .
【００１５】[0015]
【発明の効果】以上説明したように、本発明に係る電子
押印システムの請求項１記載の発明では押印要求元が押
印対象文書を特定する識別子を押印者の電子印鑑装置に
出力し、電子印鑑装置が識別子に応じて所定のデータを
サーバーより入手し、更に電子印鑑装置が押印対象であ
るデータから押印のためのデータを抽出して押印処理を
行うので、押印者は押印対象文書を確認した上で押印処
理を行うことができ、文書のすり替え等が行われる機会
が減り、セキュリティを高めることができる。更に、押
印対象文書がサーバーと電子印鑑装置間でのみ転送され
るので、誤押印を未然に防ぐ上で効果を有す。As described above, according to the invention of the electronic seal system according to the first aspect of the present invention, the seal requester outputs an identifier for specifying the document to be sealed to the sealer's electronic seal device, and the electronic seal stamp. The device obtains predetermined data from the server according to the identifier, and further, the electronic seal stamp device extracts the data for sealing from the data to be sealed and performs the sealing process. The stamping process can be performed on the above, so that the chance of replacing the document or the like is reduced, and the security can be improved. Further, since the document to be stamped is transferred only between the server and the electronic seal stamp device, it is effective in preventing erroneous stamping.
【００１６】また、請求項２記載の発明では、押印者は
押印対象文書を確認した上で押印処理を行うことがで
き、文書のすり替え等が行われる機会が減り、例えば、
押印が正しく行われなかったかのごとくする妨害を阻止
する等、セキュリティを高めることができる。According to the second aspect of the present invention, the sealer can perform the sealing process after confirming the document to be stamped, which reduces the chances of replacing the document.
Security can be enhanced, for example, by preventing interference as if imprinting was not performed correctly.
【００１７】請求項３記載の発明では、押印要求元より
押印対象データを特定するための識別子として記号、数
値、文書名等を出力するので、押印対象データの誤指定
を防ぐことができると共に、押印対象文書を確認した上
で押印処理を行うことができ、文書のすり替え等が行わ
れる機会が減り、セキュリティを高めることができる。According to the third aspect of the present invention, a symbol, a numerical value, a document name, and the like are output as an identifier for specifying the data to be stamped from the source of the seal request, so that erroneous designation of the data to be stamped can be prevented. It is possible to perform the stamping process after confirming the document to be stamped, thereby reducing the chances of replacing documents and the like, and improving security.
【００１８】請求項４記載の発明では暗号化部がハッシ
ュ情報を抽出するので、電子印鑑のデータ量が増大する
ことなく、押印対象文書を確認した上で押印処理を行う
ことができ、文書のすり替え等が行われる機会が減り、
セキュリティを高めることができる。According to the fourth aspect of the present invention, since the encryption unit extracts the hash information, it is possible to perform the stamping process after confirming the document to be stamped without increasing the data amount of the electronic seal stamp. Opportunities such as replacement are reduced,
Security can be increased.
【図１】本発明に係る電子押印システムを示す図。FIG. 1 is a diagram showing an electronic seal system according to the present invention.
【図２】本発明に係る電子押印システムの動作フローを
説明するための図。FIG. 2 is a diagram for explaining an operation flow of the electronic seal system according to the present invention.
【図３】従来の電子押印システムを示す図。FIG. 3 is a diagram showing a conventional electronic seal system.
１・・・データ保管部（サーバー） １ａ・・・押印対象データ ３・・・電子印鑑部 ３ａ・・・要求受付部 ３ｂ・・・読み取り制御部 ３ｃ・・・暗号化部（押印部） ５・・・押印要求元 ５ａ・・・識別子出力部 DESCRIPTION OF SYMBOLS 1 ... Data storage part (server) 1a ... Sealing target data 3 ... Electronic seal part 3a ... Request reception part 3b ... Read control part 3c ... Encryption part (Seal part) 5 ... Seal request source 5a ... Identifier output unit
Claims (4)
押印要求部と、押印対象である電子データを保管したデ
ータ保管部と、電子データに押印を行う電子印鑑部とを
備えた電子押印システムにおいて、 前記押印要求部は押印対象を特定するための識別子を出
力する識別子出力部を有し、前記電子印鑑部は前記押印
要求部からの押印要求を受け取り、かつ、押印要求に含
まれる識別子から所定のデータを特定する要求受付部
と、要求受付部からの指示によりデータ保管部にデータ
要求を行うと共に該データ保管部からのデータ応答を受
領する読み取り制御部と、受領した電子データより電子
押印を作成する暗号化部とを備え、該暗号化部より電子
押印を押印要求部に返還したことを特徴とする電子押印
システム。1. An electronic seal comprising: a seal requesting unit for requesting an electronic data to be stamped with an electronic signature, etc .; a data storage unit storing electronic data to be stamped; and an electronic seal stamp unit for stamping the electronic data. In the system, the seal requesting unit has an identifier output unit that outputs an identifier for specifying a seal target, and the electronic seal stamp unit receives a seal request from the seal request unit, and includes an identifier included in the seal request. A request receiving unit that specifies predetermined data from the data receiving unit, a reading control unit that makes a data request to the data storage unit according to an instruction from the request receiving unit and receives a data response from the data storage unit, An electronic seal system, comprising: an encryption unit for creating an seal; and returning the electronic seal to the seal request unit from the encryption unit.
管部より受け取った押印対象データを前記押印要求部に
返還したことを特徴とする請求項１記載の電子押印シス
テム。2. The electronic stamping system according to claim 1, wherein the electronic stamping unit returns the stamping target data received from the data storage unit together with the electronic stamping to the stamping requesting unit.
ための記号、数値、或いは文書名等であることを特徴と
する請求項１又は２記載の電子押印システム。3. The electronic stamping system according to claim 1, wherein the identifier is a symbol, a numerical value, a document name, or the like for specifying the data to be stamped.
ュ情報を抽出し、該抽出したデータに対して暗号化を行
うものであることを特徴とする請求項１〜３記載の電子
押印システム。4. The electronic sealing system according to claim 1, wherein said encryption unit extracts hash information from the data to be stamped and encrypts the extracted data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000380958A JP4465516B2 (en) | 2000-12-14 | 2000-12-14 | Electronic seal system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000380958A JP4465516B2 (en) | 2000-12-14 | 2000-12-14 | Electronic seal system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002182563A true JP2002182563A (en) | 2002-06-26 |
| JP4465516B2 JP4465516B2 (en) | 2010-05-19 |
Family
ID=18849056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000380958A Expired - Fee Related JP4465516B2 (en) | 2000-12-14 | 2000-12-14 | Electronic seal system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4465516B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003304243A (en) * | 2002-04-12 | 2003-10-24 | Mitsubishi Electric Information Systems Corp | Electronic signature program |
| JP2014078964A (en) * | 2008-01-07 | 2014-05-01 | Trustseed Sas | Signing method and signing device |
| CN117453164A (en) * | 2023-12-22 | 2024-01-26 | 北京裕佳科技有限公司 | Print control instrument platform safety supervision and early warning system based on data analysis |
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| JPH11175512A (en) * | 1997-12-09 | 1999-07-02 | Hitachi Ltd | Program related with presence certification of document |
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| JP2001282105A (en) * | 2000-03-27 | 2001-10-12 | Internatl Business Mach Corp <Ibm> | Certification method for electronic contents, system and medium with recorded program |
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| JPH09270784A (en) * | 1996-03-29 | 1997-10-14 | Hitachi Software Eng Co Ltd | Ciphering/decoding/digital signature generating/ verification device |
| JPH1032570A (en) * | 1996-07-15 | 1998-02-03 | N T T Data Tsushin Kk | Electronic signature system |
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| JP2003304243A (en) * | 2002-04-12 | 2003-10-24 | Mitsubishi Electric Information Systems Corp | Electronic signature program |
| JP2014078964A (en) * | 2008-01-07 | 2014-05-01 | Trustseed Sas | Signing method and signing device |
| US9391775B2 (en) | 2008-01-07 | 2016-07-12 | Trustseed Sas | Signature method and device |
| CN117453164A (en) * | 2023-12-22 | 2024-01-26 | 北京裕佳科技有限公司 | Print control instrument platform safety supervision and early warning system based on data analysis |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4465516B2 (en) | 2010-05-19 |
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