INFORMATION PROCESSOR, COMMUNICATION SYSTEM, INFORMATION PROCESSING METHOD AND PROGRAM
PROBLEM TO BE SOLVED: To provide a server for giving a person in charge access permission to a determined document among documents encrypted for the person in charge of documents.SOLUTION: An encrypted text storage part 71 stores encrypted information and an encrypted first random number by using a...
Gespeichert in:
| Hauptverfasser: | , |
|---|---|
| Format: | Patent |
| Sprache: | eng ; jpn |
| Schlagworte: | |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | |
|---|---|
| container_issue | |
| container_start_page | |
| container_title | |
| container_volume | |
| creator | GOTAISHI MASAHITO TSUJII SHIGEO |
| description | PROBLEM TO BE SOLVED: To provide a server for giving a person in charge access permission to a determined document among documents encrypted for the person in charge of documents.SOLUTION: An encrypted text storage part 71 stores encrypted information and an encrypted first random number by using a first public key (a public key of a person in charge) and the first random number. A key reception part 74 receives from a communication terminal of the person in charge a re-encryption key for converting the encrypted information into information decryptable by a second secret key generated by using a first secret key corresponding to the first public key, the encrypted first random number, a second public key (a public key for a person in charge) and a second random number to correspond to the second public key, and the second random number encrypted by using the second public key. A conversion part 75 uses the re-encryption key to convert the encrypted information into the information decryptable by the second secret key, and replaces the encrypted information and the encrypted first random number stored in the storage part 71 with the converted information and the encrypted second random number.SELECTED DRAWING: Figure 7
【課題】文書の責任者向けに暗号化された文書のうち、決められた文書に対して担当者にアクセス許可を与えるサーバを提供する。【解決手段】暗号文記憶部７１は第１の公開鍵（責任者の公開鍵）と第１の乱数とを使用して暗号化された情報および暗号化された第１の乱数を記憶する。鍵受信部７４は、暗号化された情報を、第１の公開鍵に対応する第１の秘密鍵と暗号化された第１の乱数と第２の公開鍵（担当者の公開鍵）と第２の乱数とを使用して生成された、第２の公開鍵に対応する第２の秘密鍵で復号可能な情報に変換するための再暗号化鍵と、第２の公開鍵を使用して暗号化された第２の乱数とを責任者の通信端末より受信する。変換部７５は再暗号化鍵を使用して、暗号化された情報を第２の秘密鍵で復号可能な情報に変換し、記憶部７１に記憶された暗号化された情報および暗号化された第１の乱数を、変換した情報および暗号化された第２の乱数に置換する。【選択図】図７ |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_JP2016225804A</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>JP2016225804A</sourcerecordid><originalsourceid>FETCH-epo_espacenet_JP2016225804A3</originalsourceid><addsrcrecordid>eNrjZAjz9HPzD_J1DPH091MICPJ3dg0O9g_SUXD29_UN9fN0hkgERwaHuPrqKGBR7OnnruDrGuLh76Lg6OcCEnUPcvTlYWBNS8wpTuWF0twMSm6uIc4euqkF-fGpxQWJyal5qSXxXgFGBoZmRkamFgYmjsZEKQIASSwxtQ</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>INFORMATION PROCESSOR, COMMUNICATION SYSTEM, INFORMATION PROCESSING METHOD AND PROGRAM</title><source>esp@cenet</source><creator>GOTAISHI MASAHITO ; TSUJII SHIGEO</creator><creatorcontrib>GOTAISHI MASAHITO ; TSUJII SHIGEO</creatorcontrib><description>PROBLEM TO BE SOLVED: To provide a server for giving a person in charge access permission to a determined document among documents encrypted for the person in charge of documents.SOLUTION: An encrypted text storage part 71 stores encrypted information and an encrypted first random number by using a first public key (a public key of a person in charge) and the first random number. A key reception part 74 receives from a communication terminal of the person in charge a re-encryption key for converting the encrypted information into information decryptable by a second secret key generated by using a first secret key corresponding to the first public key, the encrypted first random number, a second public key (a public key for a person in charge) and a second random number to correspond to the second public key, and the second random number encrypted by using the second public key. A conversion part 75 uses the re-encryption key to convert the encrypted information into the information decryptable by the second secret key, and replaces the encrypted information and the encrypted first random number stored in the storage part 71 with the converted information and the encrypted second random number.SELECTED DRAWING: Figure 7
【課題】文書の責任者向けに暗号化された文書のうち、決められた文書に対して担当者にアクセス許可を与えるサーバを提供する。【解決手段】暗号文記憶部７１は第１の公開鍵（責任者の公開鍵）と第１の乱数とを使用して暗号化された情報および暗号化された第１の乱数を記憶する。鍵受信部７４は、暗号化された情報を、第１の公開鍵に対応する第１の秘密鍵と暗号化された第１の乱数と第２の公開鍵（担当者の公開鍵）と第２の乱数とを使用して生成された、第２の公開鍵に対応する第２の秘密鍵で復号可能な情報に変換するための再暗号化鍵と、第２の公開鍵を使用して暗号化された第２の乱数とを責任者の通信端末より受信する。変換部７５は再暗号化鍵を使用して、暗号化された情報を第２の秘密鍵で復号可能な情報に変換し、記憶部７１に記憶された暗号化された情報および暗号化された第１の乱数を、変換した情報および暗号化された第２の乱数に置換する。【選択図】図７</description><language>eng ; jpn</language><subject>ADVERTISING ; CODING OR CIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHERPURPOSES INVOLVING THE NEED FOR SECRECY ; CRYPTOGRAPHY ; DISPLAY ; EDUCATION ; ELECTRIC COMMUNICATION TECHNIQUE ; ELECTRICITY ; PHYSICS ; SEALS ; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION</subject><creationdate>2016</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20161228&DB=EPODOC&CC=JP&NR=2016225804A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20161228&DB=EPODOC&CC=JP&NR=2016225804A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>GOTAISHI MASAHITO</creatorcontrib><creatorcontrib>TSUJII SHIGEO</creatorcontrib><title>INFORMATION PROCESSOR, COMMUNICATION SYSTEM, INFORMATION PROCESSING METHOD AND PROGRAM</title><description>PROBLEM TO BE SOLVED: To provide a server for giving a person in charge access permission to a determined document among documents encrypted for the person in charge of documents.SOLUTION: An encrypted text storage part 71 stores encrypted information and an encrypted first random number by using a first public key (a public key of a person in charge) and the first random number. A key reception part 74 receives from a communication terminal of the person in charge a re-encryption key for converting the encrypted information into information decryptable by a second secret key generated by using a first secret key corresponding to the first public key, the encrypted first random number, a second public key (a public key for a person in charge) and a second random number to correspond to the second public key, and the second random number encrypted by using the second public key. A conversion part 75 uses the re-encryption key to convert the encrypted information into the information decryptable by the second secret key, and replaces the encrypted information and the encrypted first random number stored in the storage part 71 with the converted information and the encrypted second random number.SELECTED DRAWING: Figure 7
【課題】文書の責任者向けに暗号化された文書のうち、決められた文書に対して担当者にアクセス許可を与えるサーバを提供する。【解決手段】暗号文記憶部７１は第１の公開鍵（責任者の公開鍵）と第１の乱数とを使用して暗号化された情報および暗号化された第１の乱数を記憶する。鍵受信部７４は、暗号化された情報を、第１の公開鍵に対応する第１の秘密鍵と暗号化された第１の乱数と第２の公開鍵（担当者の公開鍵）と第２の乱数とを使用して生成された、第２の公開鍵に対応する第２の秘密鍵で復号可能な情報に変換するための再暗号化鍵と、第２の公開鍵を使用して暗号化された第２の乱数とを責任者の通信端末より受信する。変換部７５は再暗号化鍵を使用して、暗号化された情報を第２の秘密鍵で復号可能な情報に変換し、記憶部７１に記憶された暗号化された情報および暗号化された第１の乱数を、変換した情報および暗号化された第２の乱数に置換する。【選択図】図７</description><subject>ADVERTISING</subject><subject>CODING OR CIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHERPURPOSES INVOLVING THE NEED FOR SECRECY</subject><subject>CRYPTOGRAPHY</subject><subject>DISPLAY</subject><subject>EDUCATION</subject><subject>ELECTRIC COMMUNICATION TECHNIQUE</subject><subject>ELECTRICITY</subject><subject>PHYSICS</subject><subject>SEALS</subject><subject>TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2016</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZAjz9HPzD_J1DPH091MICPJ3dg0O9g_SUXD29_UN9fN0hkgERwaHuPrqKGBR7OnnruDrGuLh76Lg6OcCEnUPcvTlYWBNS8wpTuWF0twMSm6uIc4euqkF-fGpxQWJyal5qSXxXgFGBoZmRkamFgYmjsZEKQIASSwxtQ</recordid><startdate>20161228</startdate><enddate>20161228</enddate><creator>GOTAISHI MASAHITO</creator><creator>TSUJII SHIGEO</creator><scope>EVB</scope></search><sort><creationdate>20161228</creationdate><title>INFORMATION PROCESSOR, COMMUNICATION SYSTEM, INFORMATION PROCESSING METHOD AND PROGRAM</title><author>GOTAISHI MASAHITO ; TSUJII SHIGEO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2016225804A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; jpn</language><creationdate>2016</creationdate><topic>ADVERTISING</topic><topic>CODING OR CIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHERPURPOSES INVOLVING THE NEED FOR SECRECY</topic><topic>CRYPTOGRAPHY</topic><topic>DISPLAY</topic><topic>EDUCATION</topic><topic>ELECTRIC COMMUNICATION TECHNIQUE</topic><topic>ELECTRICITY</topic><topic>PHYSICS</topic><topic>SEALS</topic><topic>TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION</topic><toplevel>online_resources</toplevel><creatorcontrib>GOTAISHI MASAHITO</creatorcontrib><creatorcontrib>TSUJII SHIGEO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>GOTAISHI MASAHITO</au><au>TSUJII SHIGEO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>INFORMATION PROCESSOR, COMMUNICATION SYSTEM, INFORMATION PROCESSING METHOD AND PROGRAM</title><date>2016-12-28</date><risdate>2016</risdate><abstract>PROBLEM TO BE SOLVED: To provide a server for giving a person in charge access permission to a determined document among documents encrypted for the person in charge of documents.SOLUTION: An encrypted text storage part 71 stores encrypted information and an encrypted first random number by using a first public key (a public key of a person in charge) and the first random number. A key reception part 74 receives from a communication terminal of the person in charge a re-encryption key for converting the encrypted information into information decryptable by a second secret key generated by using a first secret key corresponding to the first public key, the encrypted first random number, a second public key (a public key for a person in charge) and a second random number to correspond to the second public key, and the second random number encrypted by using the second public key. A conversion part 75 uses the re-encryption key to convert the encrypted information into the information decryptable by the second secret key, and replaces the encrypted information and the encrypted first random number stored in the storage part 71 with the converted information and the encrypted second random number.SELECTED DRAWING: Figure 7
【課題】文書の責任者向けに暗号化された文書のうち、決められた文書に対して担当者にアクセス許可を与えるサーバを提供する。【解決手段】暗号文記憶部７１は第１の公開鍵（責任者の公開鍵）と第１の乱数とを使用して暗号化された情報および暗号化された第１の乱数を記憶する。鍵受信部７４は、暗号化された情報を、第１の公開鍵に対応する第１の秘密鍵と暗号化された第１の乱数と第２の公開鍵（担当者の公開鍵）と第２の乱数とを使用して生成された、第２の公開鍵に対応する第２の秘密鍵で復号可能な情報に変換するための再暗号化鍵と、第２の公開鍵を使用して暗号化された第２の乱数とを責任者の通信端末より受信する。変換部７５は再暗号化鍵を使用して、暗号化された情報を第２の秘密鍵で復号可能な情報に変換し、記憶部７１に記憶された暗号化された情報および暗号化された第１の乱数を、変換した情報および暗号化された第２の乱数に置換する。【選択図】図７</abstract><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext_linktorsrc |
| identifier | |
| ispartof | |
| issn | |
| language | eng ; jpn |
| recordid | cdi_epo_espacenet_JP2016225804A |
| source | esp@cenet |
| subjects | ADVERTISING CODING OR CIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHERPURPOSES INVOLVING THE NEED FOR SECRECY CRYPTOGRAPHY DISPLAY EDUCATION ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY PHYSICS SEALS TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION |
| title | INFORMATION PROCESSOR, COMMUNICATION SYSTEM, INFORMATION PROCESSING METHOD AND PROGRAM |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-01T10%3A48%3A51IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-epo_EVB&rft_val_fmt=info:ofi/fmt:kev:mtx:patent&rft.genre=patent&rft.au=GOTAISHI%20MASAHITO&rft.date=2016-12-28&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3EJP2016225804A%3C/epo_EVB%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |