CN112685707A - Hybrid chain-based cross-domain identity authentication and account management method, device and equipment - Google Patents
Hybrid chain-based cross-domain identity authentication and account management method, device and equipment Download PDFInfo
- Publication number
- CN112685707A CN112685707A CN202011629729.7A CN202011629729A CN112685707A CN 112685707 A CN112685707 A CN 112685707A CN 202011629729 A CN202011629729 A CN 202011629729A CN 112685707 A CN112685707 A CN 112685707A
- Authority
- CN
- China
- Prior art keywords
- area
- information
- account
- chain
- identity authentication
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Collating Specific Patterns (AREA)
Abstract
The invention relates to the technical field of block chains, and provides a method, a device and equipment for cross-domain identity authentication and account management based on a hybrid chain, wherein the method comprises the following steps: creating a hybrid chain mapping strategy; acquiring an on-chain authentication request sent by a node to be verified; analyzing the authentication request to obtain head information, body information and tail information; wherein the header information includes: an information area, a account area; the body information includes: an algorithm area, an address area, a private key area and an identification area; the tail information includes: a fingerprint area and an authentication area; performing mixed chain account head pairing, and determining a block chain and account information to which a node to be verified belongs; carrying out mixed chain account body output; performing mixed chain account tail verification; performing node identity authentication based on the contents of the fingerprint area and the verification area; and if the verification is passed, the identity authentication is successful.
Description
Technical Field
The invention belongs to the technical field of block chains, and particularly relates to a hybrid chain-based cross-domain identity authentication and account management method, device and equipment.
Background
The application of the current block chain technology is mature day by day, and a public chain mainly takes bitcoin and Etheng as representatives and has the characteristics of complete decentralization, collective maintenance, high safety, high credibility and anonymity; the alliance chain is a mainstream technology for domestic blockchain application, and is provided with a strict admission mechanism, an access mechanism and an account management mechanism. In practical application, block chain link points of a single mechanism appear in a plurality of alliance chains and public chains to form a mixed chain architecture applied by combining the alliance chains and the public chains, and then admission and access of different chains of the alliance chains need KYC and obtain corresponding account authorization and access strategies, while anonymity of the public chains does not need the KYC, and access can be achieved only by obtaining a public and private key pair issued by the public chains.
Disclosure of Invention
In order to at least solve the problems in the prior art, the invention provides a method, a device and equipment for cross-domain identity authentication and account management based on a hybrid chain, and solves the problems in the prior art.
The technical scheme provided by the invention is as follows:
on one hand, a method for cross-domain identity authentication and account management based on a hybrid chain comprises the following steps:
acquiring an on-chain authentication request sent by a node to be verified;
analyzing the authentication request to obtain head information, body information and tail information; wherein the header information includes: an information area, a account area; the body information includes: an algorithm area, an address area, a private key area and an identification area; the tail information includes: a fingerprint area and an authentication area;
performing mixed chain account head pairing, and determining a block chain and account information to which a node to be verified belongs;
carrying out mixed chain account body output;
performing mixed chain account tail verification; performing node identity authentication based on the contents of the fingerprint area and the verification area;
and if the verification is passed, the identity authentication is successful.
Optionally, the method further includes:
a hybrid chain account is created.
Optionally, the method further includes:
and mapping the mixed chain accounts based on the mixed chain account information.
Optionally, the information area includes information of a block chain to which a node to be verified belongs; the account area comprises: account information of the node to be verified; the algorithm area comprises: algorithm information; the address area comprises: address information; the private key area comprises: private key information; the fingerprint area includes fingerprint information.
In another aspect, an apparatus for cross-domain identity authentication and account management based on a hybrid chain includes:
the acquisition module is used for acquiring the on-chain authentication request sent by the node to be verified;
the analysis module is used for analyzing the authentication request to obtain head information, body information and tail information; wherein the header information includes: an information area, a account area; the body information includes: an algorithm area, an address area, a private key area and an identification area; the tail information includes: a fingerprint area and an authentication area;
the pairing module is used for performing mixed chain account head pairing and determining a block chain and account information of a node to be verified;
the output module is used for outputting the mixed chain account body part;
the verification module is used for verifying the tail part of the mixed chain account; performing node identity authentication based on the contents of the fingerprint area and the verification area; and if the verification is passed, the identity authentication is successful.
Optionally, the method further includes:
a hybrid chain account is created.
Optionally, the method further includes:
and mapping the mixed chain accounts based on the mixed chain account information.
Optionally, the information area includes information of a block chain to which a node to be verified belongs; the account area comprises: account information of the node to be verified; the algorithm area comprises: algorithm information; the address area comprises: address information; the private key area comprises: private key information; the fingerprint area includes fingerprint information.
In another aspect, an apparatus for cross-domain identity authentication and account management based on a hybrid chain includes: a processor, and a memory coupled to the processor;
the memory is used for storing a computer program, and the computer program is at least used for executing the hybrid chain-based cross-domain identity authentication and account management method provided by the application;
the processor is used for calling and executing the computer program in the memory.
In yet another aspect, a storage medium stores a computer program, and when the computer program is executed by a processor, the computer program implements the steps of the hybrid chain-based cross-domain identity authentication and account management method provided in the present application.
The invention has the beneficial effects that:
the method, the device and the equipment for cross-domain identity authentication and account management based on the hybrid chain comprise the steps of obtaining an on-chain authentication request sent by a node to be verified; analyzing the authentication request to obtain head information, body information and tail information; wherein the header information includes: an information area, a account area; the body information includes: an algorithm area, an address area, a private key area and an identification area; the tail information includes: a fingerprint area and an authentication area; performing mixed chain account head pairing, and determining a block chain and account information to which a node to be verified belongs; carrying out mixed chain account body output; performing mixed chain account tail verification; performing node identity authentication based on the contents of the fingerprint area and the verification area; and if the verification is passed, the identity authentication is successful. Therefore, identity authentication and account management of each node in the hybrid chain can be performed, the unification of the identity authentication and account management work of the nodes in the hybrid chain is solved, the integration of the identity authentication and account management systems of the alliance chain and the public chain is realized, the complexity of the identity authentication and account management of the hybrid chain is reduced, and the management, authentication and maintenance efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flowchart of a hybrid chain-based cross-domain identity authentication and account management method according to an embodiment of the present invention;
fig. 2 is a full flow of hybrid chain identity authentication and account management in a hybrid chain cross-domain identity authentication and account management-based method according to an embodiment of the present invention;
fig. 3 is a mixed chain account mapping policy flow in a method based on mixed chain cross-domain identity authentication and account management according to an embodiment of the present invention:
fig. 4 is a hybrid chain identity authentication process in a hybrid chain cross-domain identity authentication and account management based method according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a hybrid chain-based cross-domain identity authentication and account management apparatus according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a device based on hybrid chain cross-domain identity authentication and account management according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
In order to at least solve the technical problem provided by the present invention, an embodiment of the present invention provides a hybrid chain-based cross-domain identity authentication and account management method. Referring to fig. 1, 2, 3, and 4, a method provided by an embodiment of the present invention may include the following steps:
s11, acquiring a link authentication request sent by a node to be verified;
s12, analyzing the authentication request to obtain head information, body information and tail information; wherein the header information includes: an information area, a account area; the body information includes: an algorithm area, an address area, a private key area and an identification area; the tail information includes: a fingerprint area and an authentication area;
s13, performing mixed chain account head pairing, and determining a block chain and account information of a node to be verified;
s14, outputting the body part of the mixed chain account;
s15, performing mixed chain account tail verification; performing node identity authentication based on the contents of the fingerprint area and the verification area;
and S16, if the verification is passed, the identity authentication is successful.
Further, the method for cross-domain identity authentication and account management based on the hybrid chain further includes: a hybrid chain account is created.
In practical applications, the hybrid chain includes a public chain and a alliance chain. There may be multiple blockchains of the same type. Referring to fig. 2, for the public chain a, the account management process includes generating a random private key a corresponding to the public key a, generating a public key hash a, generating an address a, and generating a public account a. For federation chain a, the account management process includes: the management node initiates KYC to the access node, the alliance audits, determines the node type A, determines the encryption algorithm A, generates the private key A and issues the certificate A. And then management is performed based on the hybrid chain identity authentication and account management method provided by the application. The method specifically comprises a hybrid chain account mapping strategy, a hybrid chain private key encryption algorithm, a hybrid chain account management method and a hybrid chain identity authentication mechanism.
Further, the method for cross-domain identity authentication and account management based on the hybrid chain further includes: and mapping the mixed chain accounts based on the mixed chain account information.
The hybrid chain account mapping policy specifically includes: a hybrid chain account is created. A virtual account and actual account mapping mechanism is adopted for a hybrid chain account system, the federation chain and public chain account elements are globally compatible and maximally managed, and account types and KYC are placed in an information area by the hybrid chain account. And then, based on the created mixed chain account, determining an account header area, an account encryption algorithm area, an account address area, an account private key area and an account identification area. The contents of the various regions are integrated to yield a head, a body and a tail as in the bottom column of fig. 3. The head part comprises an information area and an account head, and the body part comprises an algorithm area, an address area, a private key area and an identification area; the tail part comprises a fingerprint area and an authentication area.
Specifically, the information area includes information of a block chain to which a node to be verified belongs; the account area comprises: the account basic information and the account type of the node to be verified; the algorithm area comprises: identity authentication algorithm, data encryption algorithm, consensus algorithm information; the address area comprises: the corresponding account address, and the information is encrypted information; the private key area comprises: private key information required for chain account authentication; the fingerprint area includes: and (4) fingerprint information of the original chain account certificate file or fingerprint information calculated by pairing the account with the private key.
Referring to fig. 4, the hybrid chain identity authentication method specifically includes: the method comprises the steps of chain authentication request, authentication request analysis, mixed chain account mapping addressing, mixed chain account head pairing, mixed chain account body output, mixed chain account tail verification and calculation verification, wherein if the mixed chain account tail verification passes, identity authentication passes, and if the mixed chain account tail verification does not pass, error information is returned.
Fig. 5 is a schematic structural diagram of a hybrid chain-based cross-domain identity authentication and account management apparatus according to an embodiment of the present invention; the application provides a device based on mixed chain cross-domain identity authentication, account number management includes:
an obtaining module 51, configured to obtain an on-chain authentication request sent by a node to be verified;
the analysis module 52 is configured to analyze the authentication request to obtain header information, body information, and tail information; wherein the header information includes: an information area, a account area; the body information includes: an algorithm area, an address area, a private key area and an identification area; the tail information includes: a fingerprint area and an authentication area;
the pairing module 53 is configured to pair the mixed chain account headers, and determine a block chain to which a node to be verified belongs and account information;
the output module 54 is used for outputting the mixed chain account body part and decrypting the account private key and the address;
a verification module 55, configured to perform mixed chain account tail verification; performing mixed link node identity authentication based on the contents of the fingerprint area and the verification area; if the verification is passed, the decrypted account private key and the address request node identity authentication are used by the output module 54, and if the authentication is successful, the next step is carried out.
Further, the hybrid chain-based cross-domain identity authentication and account management apparatus provided by the apparatus further includes:
a creation module to create a hybrid chain account.
Further, the hybrid chain-based cross-domain identity authentication and account management apparatus provided by the apparatus further includes:
and the mapping module is used for mapping the mixed chain accounts based on the mixed chain account information.
Further, the information area comprises information of a block chain to which a node to be verified belongs; the account area comprises: account information of the node to be verified; the algorithm area comprises: algorithm information; the address area comprises: address information; the private key area comprises: private key information; the fingerprint area includes fingerprint information.
Fig. 6 is a schematic structural diagram of a device based on hybrid chain cross-domain identity authentication and account management according to an embodiment of the present invention. Referring to fig. 6, the device for cross-domain identity authentication and account management based on a hybrid chain provided in the present application includes: a processor, and a memory coupled to the processor;
the memory is used for storing a computer program, and the computer program is at least used for executing the hybrid chain-based cross-domain identity authentication and account management method provided by the application;
the processor is used for calling and executing the computer program in the memory.
The present application further provides a storage medium, where a computer program is stored, and when the computer program is executed by a processor, the method implements each step in the hybrid chain-based cross-domain identity authentication and account management method provided in the present application.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that the terms "first," "second," and the like in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present invention, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A method for cross-domain identity authentication and account management based on a hybrid chain is characterized by comprising the following steps:
acquiring an on-chain authentication request sent by a node to be verified;
analyzing the authentication request to obtain head information, body information and tail information; wherein the header information includes: an information area, a account area; the body information includes: an algorithm area, an address area, a private key area and an identification area; the tail information includes: a fingerprint area and an authentication area;
performing mixed chain account head pairing, and determining a block chain and account information to which a node to be verified belongs;
carrying out mixed chain account body output;
performing mixed chain account tail verification; performing node identity authentication based on the contents of the fingerprint area and the verification area;
and if the verification is passed, the identity authentication is successful.
2. The hybrid chain-based cross-domain identity authentication and account management method according to claim 1, further comprising:
a hybrid chain account is created.
3. The hybrid chain-based cross-domain identity authentication and account management method according to claim 1, further comprising:
and mapping the mixed chain accounts based on the mixed chain account information.
4. The hybrid chain cross-domain identity authentication and account management based method according to claim 1, wherein the information area includes information of a block chain to which a node to be verified belongs; the account area comprises: account information of the node to be verified; the algorithm area comprises: algorithm information; the address area comprises: address information; the private key area comprises: private key information; the fingerprint area includes fingerprint information.
5. A device based on hybrid chain cross-domain identity authentication and account management is characterized by comprising:
the acquisition module is used for acquiring the on-chain authentication request sent by the node to be verified;
the analysis module is used for analyzing the authentication request to obtain head information, body information and tail information; wherein the header information includes: an information area, a account area; the body information includes: an algorithm area, an address area, a private key area and an identification area; the tail information includes: a fingerprint area and an authentication area;
the pairing module is used for performing mixed chain account head pairing and determining a block chain and account information of a node to be verified;
the output module is used for outputting the mixed chain account body part;
the verification module is used for verifying the tail part of the mixed chain account; performing node identity authentication based on the contents of the fingerprint area and the verification area; and if the verification is passed, the identity authentication is successful.
6. The hybrid chain cross-domain identity authentication and account management based device according to claim 5, further comprising:
a hybrid chain account is created.
7. The hybrid chain cross-domain identity authentication and account management based device according to claim 5, further comprising:
and mapping the mixed chain accounts based on the mixed chain account information.
8. The hybrid chain cross-domain identity authentication and account management based device according to claim 5, wherein the information area includes information of a block chain to which a node to be verified belongs; the account area comprises: account information of the node to be verified; the algorithm area comprises: algorithm information; the address area comprises: address information; the private key area comprises: private key information; the fingerprint area includes fingerprint information.
9. A device based on hybrid chain cross-domain identity authentication and account management is characterized by comprising: a processor, and a memory coupled to the processor;
the memory is used for storing a computer program, and the computer program is at least used for executing the hybrid chain cross-domain identity authentication and account management based method of any one of claims 1 to 4;
the processor is used for calling and executing the computer program in the memory.
10. A storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the steps of the hybrid chain-based cross-domain identity authentication and account management method according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011629729.7A CN112685707A (en) | 2020-12-31 | 2020-12-31 | Hybrid chain-based cross-domain identity authentication and account management method, device and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011629729.7A CN112685707A (en) | 2020-12-31 | 2020-12-31 | Hybrid chain-based cross-domain identity authentication and account management method, device and equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112685707A true CN112685707A (en) | 2021-04-20 |
Family
ID=75456013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011629729.7A Pending CN112685707A (en) | 2020-12-31 | 2020-12-31 | Hybrid chain-based cross-domain identity authentication and account management method, device and equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112685707A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109327475A (en) * | 2018-11-30 | 2019-02-12 | 深圳市元征科技股份有限公司 | A kind of multilayer identity identifying method, device, equipment and storage medium |
| CN109460413A (en) * | 2018-11-19 | 2019-03-12 | 众安信息技术服务有限公司 | Method and system for establishing account across block chains |
| CN109493054A (en) * | 2018-11-27 | 2019-03-19 | 深圳链报科技有限公司 | Multichain approaches to IM, device, storage medium and block chain identity resolution device |
| CN110505223A (en) * | 2019-08-15 | 2019-11-26 | 腾讯科技（深圳）有限公司 | Block chain multichain management method and device |
| CN111970129A (en) * | 2020-10-21 | 2020-11-20 | 腾讯科技（深圳）有限公司 | Data processing method and device based on block chain and readable storage medium |
-
2020
- 2020-12-31 CN CN202011629729.7A patent/CN112685707A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109460413A (en) * | 2018-11-19 | 2019-03-12 | 众安信息技术服务有限公司 | Method and system for establishing account across block chains |
| CN109493054A (en) * | 2018-11-27 | 2019-03-19 | 深圳链报科技有限公司 | Multichain approaches to IM, device, storage medium and block chain identity resolution device |
| CN109327475A (en) * | 2018-11-30 | 2019-02-12 | 深圳市元征科技股份有限公司 | A kind of multilayer identity identifying method, device, equipment and storage medium |
| CN110505223A (en) * | 2019-08-15 | 2019-11-26 | 腾讯科技（深圳）有限公司 | Block chain multichain management method and device |
| CN111010394A (en) * | 2019-08-15 | 2020-04-14 | 腾讯科技（深圳）有限公司 | Block chain multi-chain management method and device |
| CN111970129A (en) * | 2020-10-21 | 2020-11-20 | 腾讯科技（深圳）有限公司 | Data processing method and device based on block chain and readable storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3451578B1 (en) | Turn-control rewritable blockchain | |
| Li et al. | EduRSS: A blockchain-based educational records secure storage and sharing scheme | |
| Sun | Privacy protection and data security in cloud computing: a survey, challenges, and solutions | |
| CN111898148A (en) | Information supervision method and device based on block chain | |
| CN109377198A (en) | A kind of signing system known together in many ways based on alliance's chain | |
| Varshney et al. | Authentication & encryption based security services in blockchain technology | |
| CN111130757A (en) | Multi-cloud CP-ABE access control method based on block chain | |
| US9698974B2 (en) | Method for creating asymmetrical cryptographic key pairs | |
| CN106464499A (en) | Communication network system, transmission node, reception node, message checking method, and computer program | |
| US10846372B1 (en) | Systems and methods for trustless proof of possession and transmission of secured data | |
| CN109547218B (en) | Alliance link node key distribution and backup system for improving BIP (building information processing) protocol | |
| CN112235301B (en) | Access right verification method and device and electronic equipment | |
| CN111614680A (en) | CP-ABE-based traceable cloud storage access control method and system | |
| He et al. | A novel cryptocurrency wallet management scheme based on decentralized multi-constrained derangement | |
| Mishra et al. | DS-Chain: A secure and auditable multi-cloud assisted EHR storage model on efficient deletable blockchain | |
| CN113315745A (en) | Data processing method, device, equipment and medium | |
| CN111640018A (en) | Block chain transaction existence verification method and device | |
| Saleem et al. | ProofChain: An X. 509-compatible blockchain-based PKI framework with decentralized trust | |
| Liu et al. | DePTVM: Decentralized pseudonym and trust value management for integrated networks | |
| Ali et al. | Ensuring security and transparency in distributed communication in iot ecosystems using blockchain technology: Protocols, applications and challenges | |
| CN113591103A (en) | Identity authentication method and system between intelligent terminals of power internet of things | |
| Sivasangari et al. | Integrated security framework for healthcare using blockchain and fog computing | |
| CN115883102B (en) | Cross-domain identity authentication method and system based on identity credibility and electronic equipment | |
| CN112685707A (en) | Hybrid chain-based cross-domain identity authentication and account management method, device and equipment | |
| CN115967568A (en) | Cross-chain access control method based on block chain and group signature mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |