PL3590226T3 - System i sposób generowania znaków cyfrowych - Google Patents
System i sposób generowania znaków cyfrowychInfo
- Publication number
- PL3590226T3 PL3590226T3 PL19725885T PL19725885T PL3590226T3 PL 3590226 T3 PL3590226 T3 PL 3590226T3 PL 19725885 T PL19725885 T PL 19725885T PL 19725885 T PL19725885 T PL 19725885T PL 3590226 T3 PL3590226 T3 PL 3590226T3
- Authority
- PL
- Poland
- Prior art keywords
- generating digital
- digital marks
- marks
- generating
- digital
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/64—Protecting data integrity, e.g. using checksums, certificates or signatures
-
- 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
- H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
- H04L9/0643—Hash functions, e.g. MD5, SHA, HMAC or f9 MAC
-
- 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
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
-
- 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
- H04L9/321—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 a third party or a trusted authority
-
- 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
- H04L9/3236—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 using cryptographic hash functions
- H04L9/3239—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 using cryptographic hash functions involving non-keyed hash functions, e.g. modification detection codes [MDCs], MD5, SHA or RIPEMD
-
- 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
- H04L9/3247—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 digital signatures
-
- 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
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/50—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using hash chains, e.g. blockchains or hash trees
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Theoretical Computer Science (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- General Health & Medical Sciences (AREA)
- Bioethics (AREA)
- Software Systems (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2019/076476 WO2019101226A2 (en) | 2019-02-28 | 2019-02-28 | System and method for generating digital marks |
EP19725885.8A EP3590226B1 (en) | 2019-02-28 | 2019-02-28 | System and method for generating digital marks |
Publications (1)
Publication Number | Publication Date |
---|---|
PL3590226T3 true PL3590226T3 (pl) | 2021-12-13 |
Family
ID=66630459
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PL19725885T PL3590226T3 (pl) | 2019-02-28 | 2019-02-28 | System i sposób generowania znaków cyfrowych |
Country Status (9)
Country | Link |
---|---|
US (1) | US11888992B2 (pl) |
EP (2) | EP3863220A1 (pl) |
JP (1) | JP6965352B2 (pl) |
KR (1) | KR102404284B1 (pl) |
CN (1) | CN110800254B (pl) |
ES (1) | ES2882677T3 (pl) |
PH (1) | PH12019501432A1 (pl) |
PL (1) | PL3590226T3 (pl) |
WO (1) | WO2019101226A2 (pl) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7367911B2 (ja) * | 2019-06-07 | 2023-10-24 | 株式会社Nexpoint | 情報処理システム |
US11394538B2 (en) * | 2019-11-05 | 2022-07-19 | David Lee Anthony Ramirez | System and method for verifying the no-later-than date-of-existence, data integrity, identity of the recorder, and timestamp of the recording for digital content |
CN111352996B (zh) * | 2020-02-26 | 2023-09-19 | 百度在线网络技术(北京)有限公司 | 基于区块链网络的数据共享方法、装置、设备及介质 |
CN111666554B (zh) * | 2020-06-03 | 2023-09-12 | 泰康保险集团股份有限公司 | 一种证书认证方法、装置、设备及存储介质 |
US20230254155A1 (en) * | 2020-07-01 | 2023-08-10 | Nippon Telegraph And Telephone Corporation | Registration terminal, verification terminal, management system and program |
US20220020010A1 (en) * | 2020-07-20 | 2022-01-20 | Jiangsu Aowei Holdings Co., Ltd. | Decentralized electronic contract attestation platform |
CN112819617B (zh) * | 2020-08-21 | 2022-06-07 | 支付宝(杭州)信息技术有限公司 | 数据上链方法及装置、电子设备、存储介质 |
CN112101938B (zh) * | 2020-09-10 | 2024-03-01 | 支付宝(杭州)信息技术有限公司 | 基于区块链的数字印章使用方法、装置及电子设备 |
US20220109577A1 (en) * | 2020-10-05 | 2022-04-07 | Thales DIS CPL USA, Inc | Method for verifying the state of a distributed ledger and distributed ledger |
CN112200569B (zh) * | 2020-10-09 | 2024-05-28 | 支付宝(杭州)信息技术有限公司 | 基于区块链的数字印章使用方法、装置及电子设备 |
CN112395646B (zh) * | 2020-10-28 | 2024-09-13 | 杭州趣链科技有限公司 | 基于区块链的编码生成方法、装置、设备及存储介质 |
CN112104463B (zh) * | 2020-11-10 | 2021-03-26 | 南京金宁汇科技有限公司 | 一种基于联盟区块链的电子印章应用方法 |
EP4082155A4 (en) | 2021-01-11 | 2023-12-06 | Micro Focus LLC | BLOCKCHAIN AUDIT SYSTEM AND PROCEDURES |
US12028465B2 (en) | 2021-08-05 | 2024-07-02 | Bank Of America Corporation | Electronic system for convergent distribution of electronic digital certificates |
US12028464B2 (en) * | 2021-08-05 | 2024-07-02 | Bank Of America Corporation | Electronic system for generating and tracking linked electronic digital certificates |
US12003651B2 (en) | 2021-08-05 | 2024-06-04 | Bank Of America Corporation | Electronic system for divergent distribution of electronic digital certificates |
Family Cites Families (59)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006320018A (ja) | 2001-03-29 | 2006-11-24 | Sony Corp | 情報処理装置および方法、記録媒体、並びにプログラム |
JP2003108708A (ja) * | 2001-07-27 | 2003-04-11 | Legal Corp | セキュアアプリケーションフレームワーク及び該セキュアアプリケーションフレームワークを用いた電子申請システム,装置,方法並びにプログラム |
JP2005010301A (ja) * | 2003-06-17 | 2005-01-13 | Ricoh Co Ltd | 電子証明書、認証方法及び認証プログラム |
JP2007006122A (ja) | 2005-06-23 | 2007-01-11 | Mitsubishi Electric Information Systems Corp | 電子印鑑システムおよび電子印鑑プログラム |
JP6033297B2 (ja) | 2012-05-30 | 2016-11-30 | 三菱電機株式会社 | 空気調和装置 |
US9853819B2 (en) | 2013-08-05 | 2017-12-26 | Guardtime Ip Holdings Ltd. | Blockchain-supported, node ID-augmented digital record signature method |
US10007913B2 (en) * | 2015-05-05 | 2018-06-26 | ShoCard, Inc. | Identity management service using a blockchain providing identity transactions between devices |
KR101637854B1 (ko) | 2015-10-16 | 2016-07-08 | 주식회사 코인플러그 | 블록체인을 기반으로 하는 공인인증서 발급시스템과 이를 이용한 블록체인을 기반으로 하는 공인인증서 발급방법 및 블록체인을 기반으로 하는 공인인증서 인증시스템과 이를 이용한 블록체인을 기반으로 하는 공인인증서 인증방법 |
US9948467B2 (en) | 2015-12-21 | 2018-04-17 | Mastercard International Incorporated | Method and system for blockchain variant using digital signatures |
US9849364B2 (en) | 2016-02-02 | 2017-12-26 | Bao Tran | Smart device |
US10587609B2 (en) | 2016-03-04 | 2020-03-10 | ShoCard, Inc. | Method and system for authenticated login using static or dynamic codes |
US10366388B2 (en) | 2016-04-13 | 2019-07-30 | Tyco Fire & Security Gmbh | Method and apparatus for information management |
US10491754B2 (en) | 2016-07-22 | 2019-11-26 | Level 3 Communications, Llc | Visualizing predicted customer bandwidth utilization based on utilization history |
US20190268466A1 (en) * | 2016-07-28 | 2019-08-29 | Nec Corporation | Number portability information management system |
WO2018020944A1 (ja) | 2016-07-28 | 2018-02-01 | 日本電気株式会社 | 掲示板情報管理システム |
US11227675B2 (en) | 2016-08-23 | 2022-01-18 | BBM Health LLC | Blockchain-based mechanisms for secure health information resource exchange |
US11170346B2 (en) | 2016-09-19 | 2021-11-09 | Sap Se | Decentralized credentials verification network |
US11212665B2 (en) * | 2016-10-04 | 2021-12-28 | Nec Corporation | Embedded SIM management system, node device, embedded SIM management method, program, and information registrant device |
CN109791591B (zh) * | 2016-10-06 | 2023-07-07 | 万事达卡国际公司 | 经由区块链进行身份和凭证保护及核实的方法和系统 |
US10157295B2 (en) | 2016-10-07 | 2018-12-18 | Acronis International Gmbh | System and method for file authenticity certification using blockchain network |
WO2018069566A1 (en) * | 2016-10-14 | 2018-04-19 | Nokia Technologies Oy | Method, device and system for validating sensitive user data transactions within trusted circle |
US10547457B1 (en) | 2016-10-21 | 2020-01-28 | Wells Fargo Bank N.A. | Systems and methods for notary agent for public key infrastructure names |
EP3560136B1 (en) | 2016-12-22 | 2020-12-02 | Itext Group NV | Distributed blockchain-based method for saving the location of a file |
WO2018114587A1 (en) | 2016-12-22 | 2018-06-28 | Itext Group Nv | Distributed blockchain-based method for maintaining the validity of a file |
JP6826290B2 (ja) | 2017-01-19 | 2021-02-03 | 富士通株式会社 | 証明書配付システム、証明書配付方法、および証明書配付プログラム |
US10498541B2 (en) | 2017-02-06 | 2019-12-03 | ShocCard, Inc. | Electronic identification verification methods and systems |
WO2018145127A1 (en) | 2017-02-06 | 2018-08-09 | ShoCard, Inc. | Electronic identification verification methods and systems with storage of certification records to a side chain |
US9998286B1 (en) | 2017-02-17 | 2018-06-12 | Accenture Global Solutions Limited | Hardware blockchain consensus operating procedure enforcement |
US10291413B2 (en) | 2017-02-17 | 2019-05-14 | Accenture Global Solutions Limited | Hardware blockchain corrective consensus operating procedure enforcement |
CN110537346B (zh) | 2017-03-06 | 2023-03-24 | 诺基亚技术有限公司 | 安全去中心化域名系统 |
CN107395557B (zh) * | 2017-03-28 | 2020-05-15 | 创新先进技术有限公司 | 一种业务请求的处理方法及装置 |
JP7060221B2 (ja) | 2017-03-31 | 2022-04-26 | Necソリューションイノベータ株式会社 | 物品情報管理装置、システム、方法およびプログラム |
US10102526B1 (en) | 2017-03-31 | 2018-10-16 | Vijay K. Madisetti | Method and system for blockchain-based combined identity, ownership, integrity and custody management |
US11394559B2 (en) | 2017-06-02 | 2022-07-19 | Visa International Service Association | Methods and systems for ownership verification using blockchain |
JP6340120B1 (ja) | 2017-06-16 | 2018-06-06 | アイビーシー株式会社 | デバイスプロビジョニングシステム |
CN107316239A (zh) | 2017-07-14 | 2017-11-03 | 众安信息技术服务有限公司 | 一种基于区块链的信息认证和溯源方法及系统 |
CN107360001B (zh) * | 2017-07-26 | 2021-12-14 | 创新先进技术有限公司 | 一种数字证书管理方法、装置和系统 |
KR20180041055A (ko) | 2017-09-06 | 2018-04-23 | 주식회사 코인플러그 | 스마트 컨트랙트 기반의 인증서 서비스를 제공하는 방법 및 이를 이용한 서버 |
US10601598B2 (en) | 2017-11-02 | 2020-03-24 | Keir Finlow-Bates | System and method for storing the location on a blockchain of a hash of a digital item within said digital item |
US20190140844A1 (en) | 2017-11-08 | 2019-05-09 | Averon Us, Inc. | Identity-linked authentication through a user certificate system |
CN107819777B (zh) * | 2017-11-17 | 2020-07-24 | 利姆斯(北京)区块链技术有限公司 | 一种基于区块链技术的数据存证方法及系统 |
US10771449B2 (en) | 2017-12-04 | 2020-09-08 | Mastercard International Incorporated | Method and system for trustworthiness using digital certificates |
US11206133B2 (en) | 2017-12-08 | 2021-12-21 | Ping Identity Corporation | Methods and systems for recovering data using dynamic passwords |
US10896418B2 (en) | 2017-12-29 | 2021-01-19 | Ebay Inc. | Secure management of data files using a blockchain |
CN108390872B (zh) * | 2018-02-09 | 2021-02-26 | 北京京东尚科信息技术有限公司 | 证书管理方法、装置、介质及电子设备 |
CN108537556A (zh) | 2018-03-13 | 2018-09-14 | 深圳信息职业技术学院 | 一种基于区块链和nfc芯片的动态信息防伪方法 |
US10320569B1 (en) | 2018-04-05 | 2019-06-11 | HOTYB, Inc. | Systems and methods for authenticating a digitally signed assertion using verified evaluators |
US20190319948A1 (en) | 2018-04-11 | 2019-10-17 | Settleware Secure Services, Inc. | Remote authentication and identification proofing systems and methods |
CN108768657A (zh) | 2018-04-17 | 2018-11-06 | 深圳技术大学(筹) | 一种基于区块链平台的数字证书颁发系统及方法 |
US20190363896A1 (en) | 2018-05-26 | 2019-11-28 | Keir Finlow-Bates | Blockchain based decentralized and distributed certificate authority |
WO2020006001A1 (en) | 2018-06-25 | 2020-01-02 | Auth9, Inc. | Method, computer program product and apparatus for creating, registering, and verifying digitally sealed assets |
US10243748B1 (en) | 2018-06-28 | 2019-03-26 | Jonathan Sean Callan | Blockchain based digital certificate provisioning of internet of things devices |
CN108924130B (zh) * | 2018-07-02 | 2021-05-07 | 上海达家迎信息科技有限公司 | 一种区块数据的验证方法、装置、设备和存储介质 |
CN109064120A (zh) | 2018-07-10 | 2018-12-21 | 马上游科技股份有限公司 | 基于区域链的旅游电子合同数字存证系统及存证方法 |
CN108810895B (zh) | 2018-07-12 | 2021-05-11 | 西安电子科技大学 | 基于区块链的无线Mesh网络身份认证方法 |
CN109067543B (zh) * | 2018-07-24 | 2020-04-14 | 腾讯科技(深圳)有限公司 | 数字证书管理方法、装置、计算机设备和存储介质 |
CN108964924B (zh) | 2018-07-24 | 2020-06-05 | 腾讯科技(深圳)有限公司 | 数字证书校验方法、装置、计算机设备和存储介质 |
CN108961030B (zh) * | 2018-08-15 | 2023-01-03 | 深圳市智税链科技有限公司 | 关于电子票据的数据处理方法、装置、系统、介质和设备 |
CN110771095B (zh) | 2019-02-28 | 2023-06-30 | 创新先进技术有限公司 | 用于实现基于区块链的数字证书的系统和方法 |
-
2019
- 2019-02-28 PL PL19725885T patent/PL3590226T3/pl unknown
- 2019-02-28 EP EP21167056.7A patent/EP3863220A1/en active Pending
- 2019-02-28 CN CN201980002980.XA patent/CN110800254B/zh active Active
- 2019-02-28 KR KR1020197018109A patent/KR102404284B1/ko active IP Right Grant
- 2019-02-28 ES ES19725885T patent/ES2882677T3/es active Active
- 2019-02-28 EP EP19725885.8A patent/EP3590226B1/en active Active
- 2019-02-28 US US16/472,606 patent/US11888992B2/en active Active
- 2019-02-28 JP JP2019534087A patent/JP6965352B2/ja active Active
- 2019-02-28 WO PCT/CN2019/076476 patent/WO2019101226A2/en active Application Filing
- 2019-06-20 PH PH12019501432A patent/PH12019501432A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
CN110800254B (zh) | 2023-06-20 |
EP3590226A2 (en) | 2020-01-08 |
US20210135880A1 (en) | 2021-05-06 |
US11888992B2 (en) | 2024-01-30 |
CN110800254A (zh) | 2020-02-14 |
EP3590226A4 (en) | 2020-05-06 |
PH12019501432A1 (en) | 2020-02-10 |
WO2019101226A2 (en) | 2019-05-31 |
KR102404284B1 (ko) | 2022-05-31 |
WO2019101226A3 (en) | 2019-12-19 |
JP2020511018A (ja) | 2020-04-09 |
KR20200105999A (ko) | 2020-09-10 |
EP3863220A1 (en) | 2021-08-11 |
EP3590226B1 (en) | 2021-06-16 |
JP6965352B2 (ja) | 2021-11-10 |
ES2882677T3 (es) | 2021-12-02 |
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