US20130110919A1 - Method for creating/issuing electronic document distribution certificate, method for verifying electronic document distribution certificate, and system for distributing electronic document - Google Patents

Method for creating/issuing electronic document distribution certificate, method for verifying electronic document distribution certificate, and system for distributing electronic document Download PDF

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US20130110919A1
US20130110919A1 US13/808,573 US201113808573A US2013110919A1 US 20130110919 A1 US20130110919 A1 US 20130110919A1 US 201113808573 A US201113808573 A US 201113808573A US 2013110919 A1 US2013110919 A1 US 2013110919A1
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certificate
distribution
message
transmitting
electronic document
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Dae Seob An
Jung Gu Lee
Seong Pil Kong
Yeong Cheol Lim
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Korea Internet and Security Agency
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National IT Ind Promotion Agency
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Assigned to NATIONAL IT INDUSTRY PROMOTION AGENCY reassignment NATIONAL IT INDUSTRY PROMOTION AGENCY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AN, DAE SEOB, KONG, SEONG PIL, LEE, JUNG GU, LIM, YEONG CHEOL
Publication of US20130110919A1 publication Critical patent/US20130110919A1/en
Assigned to KOREA INTERNET & SECURITY AGENCY reassignment KOREA INTERNET & SECURITY AGENCY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NATIONAL IT INDUSTRY PROMOTION AGENCY
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
    • H04L63/0823—Network architectures or network communication protocols for network security for authentication of entities using certificates
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
    • G06Q50/50—Business processes related to the communications industry
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/10—Office automation; Time management
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
    • G06Q50/60—Business processes related to postal services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
    • H04L51/04—Real-time or near real-time messaging, e.g. instant messaging [IM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
    • H04L51/21—Monitoring or handling of messages
    • H04L51/214—Monitoring or handling of messages using selective forwarding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3263—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving certificates, e.g. public key certificate [PKC] or attribute certificate [AC]; Public key infrastructure [PKI] arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/40—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection

Definitions

  • the present invention relates to a method for creating/issuing an electronic document distribution certificate capable of providing a transparent and efficient issuing service and enhancing reliability of distribution of the electronic document due to compatibility guarantee of a certificate, in creating, distributing, and storing a distribution certificate within a system for distributing an electronic document based on a certified electronic address, a method for verifying an electronic document distribution certificate, and a system for distributing an electronic document.
  • the present invention has been made in an effort to provide a method for creating/issuing an electronic document distribution certificate capable of providing a transparent and efficient issuing service and enhancing reliability of distribution of the electronic document due to compatibility guarantee of a certificate, in creating, distributing, and storing a distribution certificate within a system for distributing an electronic document based on a certified electronic address. Further, the present invention has been made in an effort to provide a method for verifying a distribution certificate helping to correctly utilize a certificate by defining a standardized verifying method of a distribution certificate. In addition, the present invention has been made in an effort to provide a system for distributing an electronic document capable of guaranteeing reliability of distribution.
  • An exemplary embodiment of the present invention provides a method of creating/issuing a distribution certificate in a system for distributing an electronic document including transmitting and receiving entities and a distribution hub, the method including: (a) transmitting, by a transmitting entity, a distribution message including a transmitter's electronic document to a receiving entity; (b) creating, by a receiving entity, a reception certificate by acquiring essential information after receiving the distribution message; (c) transmitting, by the receiving entity, the created reception certificate to the transmitting entity; (d) completing, by the transmitting entity, verification for the received reception certificate and then, attaching verification information on an electronic signature certificate of the reception certificate to the reception certificate; and (e) transmitting, by the transmitting entity, the reception certificate to a third party storage authority and requesting the storage thereto.
  • Another exemplary embodiment of the present invention provides a method for verifying a distribution certificate created/issued in a system for distributing an electronic document including transmitting and receiving entities and a distribution hub, the method including: verifying whether a format of a distribution certificate observes constraints of a predefined structure and value; verifying whether transmitting, receiving, and reading date and time of a distribution message that are established in a distribution certificate, an issuance date of a distribution certificate, a verification time of a certification, and an effect expiration date of a certificate are ordered; verifying an electronic signature attached to the distribution certificate; and verifying validity of a certificate in which an electronic signature is written in the distribution certificate and verifying identity with information on an issuer of the distribution certificate.
  • Yet another exemplary embodiment of the present invention provides a system for distributing an electronic document, including: transmitting and receiving entities that distribute an electronic document through a distribution messaging server transmitting and receiving a message based on an electronic document and issuing and managing a distribution certificate for message transmission and reception; a distribution hub that registers/manages the electronic addresses of the transmitting and receiving entities, sets an electronic document distribution path between the transmitting and receiving entities, performs message transmission when errors are created during an electronic document distribution process between the transmitting and receiving entities, and issues the distribution certificate; and a trusted third party storage authority that receives and stores the distribution certificate; wherein the distribution certificate includes a reception certificate for non-repudiation for the fact that a receive entity receives a message, a transmission certificate for verifying a transmission try of the transmit entity, and a reading certificate for non-repudiation for the fact that a receiptor reads the received message.
  • FIG. 1 is a diagram for describing creation and issuance of a distribution certification according to an exemplary embodiment of the present invention.
  • FIG. 2 is a diagram illustrating a process for creating and issuing a distribution certificate according to an exemplary embodiment of the present invention.
  • a method for creating an electronic document distribution certificate includes: (a) transmitting, by a transmitting entity, a distribution message including a transmitter's electronic document to a receiving entity; (b) receiving, by the receiving entity, the distribution message and acquiring essential information to create a reception certificate; (c) transmitting, by the receiving entity, the created reception certificate to the transmitting entity; (d) completing, by the transmitting entity, verification on the received reception certificate and then, attaching verification information on an electronic signature certificate of the reception certificate to the reception certificate; and (e) transmitting, by the transmitting entity, the reception certificate to a third party storage authority to request the storage.
  • a method for verifying an electronic document distribution certificate includes: verifying whether a format of the distribution certificate observes constraints of predefined structures and values; verifying whether transmitting, receiving, and reading date and time of a distribution message that are established in a distribution certificate, an issuance date of a distribution certificate, a verification time of a certification, and an effect expiration date of a certificate are ordered; verifying an electronic signature attached to the distribution certificate; and verifying validity of an authentication certificate that an electronic signature is written in the distribution certificate and verifying identity with information on an issuer of the distribution certificate.
  • a system for distributing an electronic document includes: transmitting and receiving entities that distribute an electronic document through a distribution messaging server transmitting and receiving a message based on an electronic address and issuing and managing a distribution certificate for message transmission and reception; a distribution hub that registers/manages the electronic addresses of the transmitting and receiving entities, sets an electronic document distribution path between the transmitting and receiving entities, performs message transmission when errors are created during an electronic document distribution process between the transmitting and receiving entities, and issues the distribution certificate; and a trusted third party storage authority that receives and stores the distribution certificate, wherein the distribution certificate includes a reception certificate for non-repudiation for the fact that a receiving entity receives a message, a transmission certificate for verifying a transmission try of the transmitting entity, and a reading certificate for non-repudiation for the fact that a receptor reads the received message.
  • FIG. 1 illustrates components for creating and issuing a distribution certificate according to an exemplary embodiment of the present invention and each component will be described with reference to the following ⁇ circle around (1) ⁇ to ⁇ circle around (4) ⁇
  • a transmitting entity (or transmitting electronic document mediator, hereinafter, referred to as transmitting entity 101 ): basically transmits a transmitter's electronic document to a receiving entity or if necessary, requests a transmission to a distribution relay server.
  • the transmitting entity serves to verify the distribution certificate received from the receiving entity or the distribution relay server and then, attach the verification information to the distribution certificate to be stored in a third party storage authority, in connection with the distribution certificate.
  • a receiving entity (or receiving electronic document mediator, hereinafter, referred to as receiving entity 102 ): basically, transfers the electronic document received from the transmitting entity or the distribution relay server to a receiptor).
  • the receiving entity serves to create the reception certificate as soon as receiving the electronic document from the transmitting entity or the distribution relay server and transmit the created certificate to the transmitting entity or the distribution relay server as a response message or create a reading certificate immediately after the receiptor reads the electronic document and transfer the created reading certificate to the transmitting entity, in connection with the distribution certificate.
  • An electronic document distribution hub (or distribution relay server 103 ): basically, transfers an electronic document receiving a transmission request from the transmitting entity to the receiving entity.
  • the electronic document distribution hub serves to create the transmission certificate as soon as receiving the transmission request of the electronic document from the transmitting entity so as to be transmitted to the transmitting entity or transfer the electronic document to the receiving entity and then, transfer the reception certificate received as a response to the transmission certificate to the transmitting entity, in connection with the distribution certificate.
  • a third party storage authority serves to safely store the distribution certificate as a trusted authority.
  • reference numerals of FIG. 1 will be omitted.
  • the essential information required to create the electronic document distribution certificate according to the present invention is as the following Table 1.
  • Non- Receiving Document certificate repudiation entity/immediately information for message after transmitter, receiving reception receiptor, fact of transmitter receiving transmitting time, entity receiptor receiving time Transmission Verification Distribution Document certificate for relay information, transmission server/immediately transmitter, try of after receiptor, transmitting reception of transmitter entity transmission transmission request message requesting time Reading Non- Receiving Document Certificate repudiation entity/immediately information, for fact after being transmitter, that read by receiptor, receiptor receiptor transmitter reads transmitting time, received receiptor receiving message time, receiptor reading time
  • a method for acquiring essential information on the electronic document distribution certificate according to the present invention is as the following Table 2.
  • the system time of the distribution messaging server and the distribution relay server needs to be periodically synchronized with the time of externally authorized institution.
  • FIG. 2 All of the processes involved in the electronic document distribution certificate according to the present invention are illustrated in FIG. 2 .
  • the reception certificate is an electronic document distribution certificate created for verifying the fact that the electronic document distribution message is received from the transmitting entity and the processes involved in the reception certificate are as the following Table 3.
  • the transmitting entity transmits the distribution message including the transmitter's electronic document to the receiving entity 2
  • the receiving entity receives the distribution message and then, immediately receives the essential information to create the reception certificate 3
  • the receiving entity transmits the created reception certificate to the transmitting entity 4
  • the transmitting entity completes verification for the reception certificate and then, attaches the verification information on the electronic signature certificate of the reception certificate to the reception certificate 5
  • the transmitting entity transmits and stores the reception certificate to the certified electronic document storage authority.
  • the transmission certificate is created by the distribution relay server for verifying the fact that the transmitting entity makes the transmission request and transmitted to the transmitting entity.
  • the process involved in the transmission certificate is as the following Table 4.
  • the transmitting entity transmits the distribution message to the receiving entity.
  • the distribution relay server creates the transmission certificate for the requested transmission.
  • the distribution relay server transmits the transmission certificate to the transmitting entity.
  • the transmitting entity completes verification for the transmission certificate and then, attaches the verification information on the electronic signature certificate of the transmission certificate to the transmission certificate.
  • the transmitting entity stores the transmission certificate in the certified electronic document storage authority.
  • the distribution relay server transfers the distribution message to the receiving entity.
  • the receiving entity creates the reception certificate immediately after the reception of the electronic document.
  • the receiving entity transmits the reception certificate to the distribution relay server 10
  • the distribution relay server transfers the reception certificate to the transmitting entity.
  • the transmitting entity completes the verification for the reception certificate and then, attaches the verification information on the electronic signature certificate of the reception certificate to the reception certificate 12
  • the transmitting entity transmits and stores the reception certificate to the certified electronic document storage authority.
  • the reading certificate is a certificate that is created by the receiving entity and is transmitted to the transmitting entity so as to verify that the receiptor reads the message received from the transmitting entity by the receiving entity and the process involved in the reading certificate is as the following Table 5.
  • Process Name 1 The receiptor requests the reading of the distribution message to the receiving entity to read the distribution message received as a response. 2
  • the receiving entity creates the reading certificate. 3
  • the receiving entity completes the verification for the reading certificate and then, attaches the verification information on the electronic signature certificate of the reading certificate to the reading certificate. 4
  • the transmitting entity transmits and stores the reading certificate to the certified electronic document authority.
  • the basic preconditions and considerations involved in the issuance and verification of the distribution certificate are as the following ⁇ circle around (1) ⁇ to ⁇ circle around (9) ⁇ .
  • the distribution certificate is created and verified by the distribution messaging server and the distribution relay server of the transmitting and receiving entities.
  • the distribution certificate is electronically signed and created only based on an NPKI certificate.
  • the corresponding distribution certificate is created based on the distribution message. Even though at least two electronic documents are included in a single distribution message, only one distribution certificate created.
  • the distribution certificate needs to be allocated with an ID that can identify the distribution message and an electronic document identifier or an electronic document name that can identify the electronic document within the distribution message.
  • a serial number of the distribution certificate is created by individual transmitting and receiving entities and thus uses a random number of 32 bytes so as to allocate uniqueness.
  • Update and revocation of the distribution certificate is not defined in terms of characteristics of the distribution system.
  • the distribution messaging server needs to maintain the synchronization with the visual information of the external trusted institution at all times, thereby guaranteeing the reliability of the visual information within the distribution certificate.
  • the policies of the distribution certificate use only an object identifier (OID) and a name that are defined in the present technology standard.
  • the transmitting entity verifies the received distribution certificate and then, attaches the verification information on the signature certificate of the distribution certificate to the distribution certificate.
  • the electronic document distribution certificate is created by the transmitting and receiving entities and electronically signed by using the NPKI certificate of the transmitting and receiving entities.
  • the basic structure of the electronic document distribution certificate uses a SignedData structure of a CMS standard to use the same content identifier as the certificate of the certified electronic document authority.
  • a basic field of the electronic document distribution certificate is as the following Table 7.
  • ARCCertInfo SEQUENCE ⁇ version [0] EXPLICIT ARCVersion DEFAULT v1, serialNumber SerialNumber, issuer GeneralNames, dateOfIssue GeneralizedTime, dateOfExpire DateOfExpiration, policy ARCCertificatePolicies, requestInfo RequestInfo, target TargetToCertify, extionsions [1] EXPLICIT Extensions OPTIONAL ⁇
  • a version of the structure of the electronic document distribution certificate is represented.
  • the version is set to be v9 and uses a distributionInfos type of a target field.
  • the identification information of the electronic document distribution certificate is represented.
  • the serial number of the electronic document distribution certificate uses a random number of 32 bytes so as to be created as a unique amount of integer value. In order to process the electronic document distribution certificate, there is a need to process a serial number of 32 bytes.
  • a subject issuing the electronic document distribution certificate is represented.
  • a directoryName field having a GeneralName structure is necessarily used and the receiving entity or the distribution relay server extracts a subjectDN value of the certificate in which the electronic document distribution certificate is electronically signed so as to be set as it is.
  • the time when the electronic document distribution certificate is issued is represented.
  • the dataOfIssue uses a GeneralizedTime format.
  • the dataOfExpire of the electronic document distribution certificate is in the future, as compared with the dataOfIssue and needs to be set to have a sufficient spare in consideration of a period required to verify the distribution fact.
  • the policy of the electronic document distribution certificate is represented.
  • the present field is configured of Qualifier information for representing a policy OID according to types of electronic document distribution certificates and types of electronic document distribution certificates. It is to be noted that only userNotice is used as the Qualifier information and cPSuri is not used.
  • the types of electronic document distribution certificates are displayed using an explicitText field that is lower than the userNotice field and a format thereof needs to use BMPString.
  • the policy OID within the electronic document distribution certificate follows the types of certificates and needs to use only the values designated in the present invention.
  • the OID and the Qualifier information according to the type of the electronic document distribution certificate are as follows.
  • the present field is set to be null.
  • RequestInfo :: CHOICE ⁇ arcCertRequest ARCCertRequest, null NULL ⁇
  • the present field includes the contents to be verified.
  • the present field needs to set the information on the distribution message by necessarily using the lower distributionInfos field.
  • the certified electronic address of the transmitter transmitting the electronic document distribution message is represented.
  • the certified electronic address of the receiptor receiving the electronic document distribution message is represented.
  • the time when the distribution message is transmitted by the transmitter is represented.
  • the transmitting date and time of the reception certificate and the reading certificate means the time when the transmitting entity transmits the distribution message and the value of the TimeStamp field that is included in the SOAP message within the “message transmission” distribution linkage message is represented in the GeneralizedTime format.
  • the transmitting date and time of the transmission certificate means the time when the transmitting entity requests the transmission of the distribution message to the distribution relay server and uses the time when the distribution relay server receives the “message transmission request” distribution message, unlike other distribution certificates using time values within the distribution linkage message.
  • the time field only the present field is included in the transmission certificate and the receiving date and time field and the reading date and time field are not created.
  • the time when the receiptor receives the distribution message is represented.
  • the receiving date and time is a field that is created only in the reception certificate and the reading certificate and is set as the time when the distribution messaging server of the receiving entity receives the “message transmission” distribution message.
  • the receiving date and time is after the transmitting date and time and is equal to or earlier than the time when the certificate is created.
  • the time when the receiptor reads the electronic document after receiving the electronic document is represented.
  • the reading date and time is a field that is created only in the reading certificate and is set as the time when the distribution messaging server of the receiving entity responds to the receiptor's “message detailed information request”.
  • the time needs to be equal to a value of a TimeStamp field included in the SOAP message within the distribution linkage message responding to the receiptor by the receiving entity represented in the GeneralizedTime format.
  • the reading date and time needs to be equal to or earlier than the time when the certificate is created and is equal to or later than the receiving date and time.
  • An identification value for the distribution message is represented.
  • An identifier of the distribution message that is the issuance object of the electronic document distribution certificate is set as it is.
  • the number of electronic document files attached to the distribution message is represented.
  • the number of electronic document files attached to the actual distribution message is set.
  • the distribution message may be attached with at least one electronic document file and sets the information on the individual files using a DistributedFile structure.
  • Hash values of individual electronic document files attached to the distribution message are represented.
  • the individual electronic document file is set in a hashedData field after a hash value is created using a hash algorithm of a hashAlg field.
  • Identifiers of individual electronic document files attached to the distribution message are represented.
  • the file identification value is not present within the distribution message and a Content-ID value of the individual electronic document file attached to the overall distribution linkage message configured of a Multi Part message in an MIME format is set as it is.
  • the field may be selectively used, but when the file name field is not used, is necessarily used and it is recommended that the file identification value field be used.
  • the distribution certificate is compared with the electronic document file and verified by preferentially using the file identification value field.
  • the file names of the individual electronic document files attached to the distribution message are represented.
  • the file name field is necessarily created and as a value, the Content-ID value of the individual electronic document file attached to the overall distribution linkage message configured of the Multi Part message in the MIME format is set as it is.
  • the file name field may be omitted and the value capable of auxiliarily identifying the electronic document file is set at the time of the creation of the file identification value field.
  • the electronic document distribution certificate profile is as the following Table 17.
  • a public key encryption algorithm uses RSA and a hash algorithm uses SHA256
  • the distribution message transmitting entity needs to perform the verification on the certificate as soon as receiving the electronic document distribution certificate.
  • the process of verifying distribution certificate is largely divided into the validity verification of the certificate and the content verification of the certificate.
  • the validity verification of the certificate is a process of confirming whether conditions for obtaining an effect as the certificate are satisfied and the content verification of the certificate is a process of confirming the fact by comparing with the distribution message to be verified through the certificate. Therefore, the content verification of the certificate is not the verification for the certificate but may be considered to be performed to confirm whether the distribution fact is truth.
  • the validity verification of the electronic document distribution certificate is performed by the processes of ⁇ circle around (1) ⁇ verifying the certificate format, ⁇ circle around (2) ⁇ visually verifying certificate, ⁇ circle around (3) ⁇ verifying the certificate electronic signature, and ⁇ circle around (4) ⁇ verifying the signature certificate and the content verification of the certificate is performed by ⁇ circle around (5) ⁇ the process of comparing and verifying the distribution message.
  • the verification of the certificate format is a process of confirming whether the format of the distribution certificate to be verified observes the constraints of the structure and value defined in the present standard and the following 1) to 7) matters are basically confirmed at the time of verifying the certificate format.
  • the certificate visual verification is a process of confirming whether the values of each visual field set in the distribution certificate are normal at the verification reference time. That is, it is confirmed that the values of each visual field set in the distribution certificate meets the rule of the following Table 18 unlike those at the verification reference time, during the present process.
  • the verification of the electronic signature is a process of verifying the electronic signature attached to the distribution certificate for integrity guarantee and non-repudiation for the contents to be verified by the distribution certificate and follows the method for verifying an electronic signature for the signedData of a general CMS.
  • the verification of the signature certificate is a process of verifying the validity of the certificate in which the distribution certificate is electronically signed and the identity with the issuer information of the distribution certificate.
  • the validity verification of the electronic signature certificate is a process that is generally included in the process of verifying the electronic signature as a part thereof and is performed by the processes of verifying an available period of the certificate, verifying the revocation, and verifying a path with the upper CA certificates, and the like. This is verified based on “technology standard [KCAC.TS.CERTVAL] of verifying authorized certificate path” of the authorized certificate system.
  • the issuer information of the distribution certificate is formed to set a subject DN value of the electronic signature certificate as it is and therefore, two values are extracted to perform the comparison and verification on whether the two values coincide with each other.
  • the process of comparing and verifying a distribution message is not a process of verifying the validity of the distribution certificate but is a process of confirming whether the distribution fact is truth by comparing and verifying the information of the distribution message included in the distribution certificate with that of the actual distribution message.
  • the transmitting entity transmits the distribution message or receives the distribution certificate after the transmission request, it is to be necessarily confirmed that the corresponding distribution certificate includes the information on the distribution message transmitted by the transmitting entity, by performing the comparison and verification of the present distribution message.
  • the distribution certificate is registered and stored in the certified electronic document authority, which provides only the long-term guarantee function for the storage time and integrity of the distribution certificate but cannot guarantee the long period of time for the validity of the electronic signature certificate of the issuance time of the distribution certificate after the available period of the electronic signature certificate expires. That is, after the valid period of the electronic signature certificate expires, the validity guarantee of the distribution certificate is not permitted.
  • the transmitting entity collects CRL and ARL and an upper CA certificate and a Root CA certificate for verifying the revocation of the electronic signature certificate and the path so as to perform the process of “5.2.4 verification of signature certificate” among the processes of verifying the validity of the received distribution certificate. It is possible to guarantee the validity of the electronic signature certificate at the time of the issuance of the distribution certificate by storing the corresponding data in the certified electronic document authority together with the distribution certificate, such that the validity of the distribution certificate is guaranteed.
  • the transmitting entity includes the CRL and the ARL and the upper CA certificate and the Root CA certificate that are used for verification in a certificates field and a crls field within the signedData structure of the distribution certificate after the verification for the electronic signature certificate succeeds. Precautions need to perform only the work including each information in the corresponding field regardless of an order of including each information. Since the certificates field and the crls field are not the electronic signature object information of the signedData, the verification for the distribution certificate still succeeds even after the corresponding work is performed.
  • SignedData SEQUENCE ⁇ version CMSVersion, digestAlgorithms DigestAlgorithmIdentifiers, encapContentInfo EncapsulatedContentInfo, certificates [0] IMPLICIT CertificateSet OPTIONAL, crls [1] IMPLICIT RevocationInfoChoices OPTIONAL, signerInfosSignerInfos ⁇
  • the transmitting entity stores the distribution certificate in which the verification information of the electronic signature certificate is included in the certified electronic document authority, such that the long-term verification for the distribution certificate can be performed.

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US13/808,573 2010-07-08 2011-07-08 Method for creating/issuing electronic document distribution certificate, method for verifying electronic document distribution certificate, and system for distributing electronic document Abandoned US20130110919A1 (en)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
KR20100065985 2010-07-08
KR10-2010-0065985 2010-07-08
KR10-2010-0131936 2010-12-21
KR20100131936A KR20120005364A (ko) 2010-07-08 2010-12-21 전자 주소, 및 전자문서 유통 시스템
KR10-2010-0131935 2010-12-21
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