CN111241533A - Block chain-based password management method and device and computer-readable storage medium - Google Patents
Block chain-based password management method and device and computer-readable storage medium Download PDFInfo
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- CN111241533A CN111241533A CN202010016000.6A CN202010016000A CN111241533A CN 111241533 A CN111241533 A CN 111241533A CN 202010016000 A CN202010016000 A CN 202010016000A CN 111241533 A CN111241533 A CN 111241533A
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- 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
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/45—Structures or tools for the administration of authentication
- G06F21/46—Structures or tools for the administration of authentication by designing passwords or checking the strength of passwords
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- 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
Abstract
The invention relates to a cryptographic technology, comprising a block chain-based cryptographic management method, which comprises the following steps: acquiring a locally generated key pair comprising a public key and a private key, and establishing the public key as a password management account; when an account password adding request sent by a user is received, account information to be added input by the user is obtained and added to a password management account; encrypting the received account information to be added through a preset encryption algorithm to obtain corresponding first account encryption information comprising an encryption ciphertext; the account information to be added comprises a website, an account and a password of the corresponding account; the method comprises the steps of digitally signing first account number encryption information through a private key to obtain a signature, sending second account number encryption information consisting of the signature, the first account number encryption information and a public key to a service center, enabling the service center to verify the signature according to the public key, and uploading second account number password information to a block chain network after the verification is successful.
Description
Technical Field
The present invention relates to the field of computer application technologies, and in particular, to a block chain-based password management method and apparatus, and a computer-readable storage medium.
Background
With the continuous development of information technology and the internet, a large number of websites and applications emerge, and people rely on various network services in office and personal life gradually, and accounts of the websites and the applications are not shared, so that a user needs to register account passwords in hundreds of websites and applications.
At present, in order to prevent passwords from being forgotten, a user manages account passwords through different account passwords in a certain storage medium, for example, the account passwords are stored in a computer, a mobile phone and paper, or uploaded to a cloud disk and the like, so that the account passwords are managed, however, the account password management mode is easily attacked from the outside and lost, and unsafe risks such as data leakage, stealing, tampering and the like are caused.
Disclosure of Invention
The invention provides a block chain-based password management method and device and a computer-readable storage medium, and mainly aims to solve the problems that account passwords are easy to lose and tamper and account password management is not safe.
In order to achieve the above object, the present invention provides a cipher management method based on a block chain, where the cipher management method based on a block chain includes:
acquiring a locally generated key pair comprising a public key and a private key, and establishing the public key as a password management account;
when an account password adding request sent by a user is received, account information to be added input by the user is obtained and added to the password management account;
encrypting the received account information to be added through a preset encryption algorithm to obtain corresponding first account encryption information comprising an encryption ciphertext; the account information to be added comprises a website, an account and a password of the corresponding account;
the first account encryption information is digitally signed through the private key to obtain a signature, second account encryption information consisting of the signature, the first account encryption information and the public key is sent to a service center, so that the service center verifies the signature according to the public key, and after verification is successful, the second account encryption information is uploaded to a block chain network to achieve management of the account encryption information.
Optionally, the first account encryption information line is digitally signed by the private key to obtain a signature; and sending second account number encryption information consisting of the signature, the first account number encryption information and the public key to a service center, so that the service center verifies the signature according to the public key, and uploads the second account number password information to a block chain network after verification is successful, so as to realize the management of the account number password information, and the steps comprise:
digitally signing the encrypted information line of the first account by the private key to obtain a signature;
sending second account encryption information consisting of the signature, the first account encryption information and the public key to a service center, so that the service center verifies the signature according to the public key and caches the second account password information to a local database after the verification is successful;
and creating a transaction, performing data formatting on the second account password information, putting the second account password information into the transaction as remark information, uploading the transaction to a block chain network, and adding a returned transaction ID to a database state table.
Optionally, after the step of sending second account encryption information composed of the signature, the first account encryption information, and the public key to a service center, so that the service center verifies the signature according to the public key, and after the verification is successful, uploads the second account password information to a block chain network through the service center, so as to manage account password information, the method further includes:
sending the account password adding request to the service center, so that the service center analyzes second account password information according to the account password adding request to obtain a public key, an encrypted ciphertext and a signature, and performing signature verification on the account password to be added by using the public key;
and when the signature verification sent by the service center is received and passed, inquiring whether the account corresponding to the public key exists, when the account corresponding to the public key does not exist, inquiring the latest state transaction ID corresponding to the public key, and when the latest state transaction ID is empty, adding the account into an account list.
Optionally, the received account information to be added is encrypted through a preset encryption algorithm to obtain corresponding first account encryption information; the account information to be added comprises a website, an account and a password of the corresponding account; the step that the account number encryption information comprises an encryption ciphertext comprises the following steps:
the client encrypts the received website and the account password respectively through public key encryption to obtain a first ciphertext and a second ciphertext;
and splicing the first ciphertext and the second ciphertext to obtain the first account encryption information.
Optionally, the cipher management method based on a blockchain further includes:
when a client receives an account password updating request sent by a user, acquiring account password information to be updated according to the account password updating request, and updating the account password information;
and the client sends the updated account password information to a block chain network through the service center so as to generate a block corresponding to the current service center after being verified by other nodes in the block chain network.
The present invention also provides an electronic device comprising a memory and a processor, the memory having stored thereon a blockchain based cryptographic management program operable on the processor, the blockchain based cryptographic management program when executed by the processor implementing the steps of:
acquiring a locally generated key pair comprising a public key and a private key, and establishing the public key as a password management account;
when an account password adding request sent by a user is received, account information to be added input by the user is obtained and added to the password management account;
encrypting the received account information to be added through a preset encryption algorithm to obtain corresponding first account encryption information comprising an encryption ciphertext; the account information to be added comprises a website, an account and a password of the corresponding account;
the first account encryption information is digitally signed through the private key to obtain a signature, second account encryption information consisting of the signature, the first account encryption information and the public key is sent to a service center, so that the service center verifies the signature according to the public key, and after verification is successful, the second account encryption information is uploaded to a block chain network to achieve management of the account encryption information.
Optionally, the first account encryption information line is digitally signed by the private key to obtain a signature; and sending second account number encryption information consisting of the signature, the first account number encryption information and the public key to a service center, so that the service center verifies the signature according to the public key, and uploads the second account number password information to a block chain network after verification is successful, so as to realize the management of the account number password information, and the steps comprise:
digitally signing the encrypted information line of the first account by the private key to obtain a signature;
sending second account encryption information consisting of the signature, the first account encryption information and the public key to a service center, so that the service center verifies the signature according to the public key and caches the second account password information to a local database after the verification is successful;
and creating a transaction, performing data formatting on the second account password information, putting the second account password information into the transaction as remark information, uploading the transaction to a block chain network, and adding a returned transaction ID to a database state table.
Optionally, after the step of sending second account encryption information composed of the signature, the first account encryption information, and the public key to a service center, so that the service center verifies the signature according to the public key, and after the verification is successful, uploads the second account password information to a block chain network through the service center, so as to manage account password information, the method further includes:
sending the account password adding request to the service center, so that the service center analyzes second account password information according to the account password adding request to obtain a public key, an encrypted ciphertext and a signature, and performing signature verification on the account password to be added by using the public key;
and when the signature verification sent by the service center is received and passed, inquiring whether the account corresponding to the public key exists, when the account corresponding to the public key does not exist, inquiring the latest state transaction ID corresponding to the public key, and when the latest state transaction ID is empty, adding the account into an account list.
Optionally, the received account information to be added is encrypted through a preset encryption algorithm to obtain corresponding first account encryption information; the account information to be added comprises a website, an account and a password of the corresponding account; the step that the account number encryption information comprises an encryption ciphertext comprises the following steps:
the client encrypts the received website and the account password respectively through public key encryption to obtain a first ciphertext and a second ciphertext;
and splicing the first ciphertext and the second ciphertext to obtain the first account encryption information.
Optionally, the cipher management method based on a blockchain further includes:
when a client receives an account password updating request sent by a user, acquiring account password information to be updated according to the account password updating request, and updating the account password information;
and the client sends the updated account password information to a block chain network through the service center so as to generate a block corresponding to the current service center after being verified by other nodes in the block chain network.
In addition, to achieve the above object, the present invention also provides a computer readable storage medium, on which a block chain based password management program is stored, where the block chain based password management program can be executed by one or more processors to implement the steps of the above block chain based password management method.
The password management method, the password management device and the computer-readable storage medium based on the block chain have the advantages that a public key is used as a password management account, account password information to be added input by a user is obtained and added to a password management account when an account password adding request sent by the user is received, and then the received account password information to be added is encrypted through public key adding to obtain corresponding account password encryption information; the account password encryption information comprises a website address, a signature and a ciphertext; and then, signature verification is carried out through a private key, and when the signature verification is passed, the account password encryption information is uploaded to the block chain network through a service center so as to realize management of the account password information. Therefore, the password management account generated by one public key manages the password information of a plurality of personal accounts of the user, the probability of losing prevention, tampering prevention and stealing prevention of the account password is improved, and the safety of account password management based on the block chain is further improved.
Drawings
Fig. 1 is a flowchart illustrating a cipher management method based on a block chain according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating an internal structure of an electronic device according to an embodiment of the invention;
fig. 3 is a block diagram of a block chain-based password manager in an electronic device according to an embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a block chain-based password management method. Fig. 1 is a schematic flowchart of a cipher management method based on a block chain according to an embodiment of the present invention. The method may be performed by a device, which may be implemented by software and/or hardware, and in this embodiment, the device is an intelligent terminal.
In this embodiment, the block chain-based password management method includes:
s101, acquiring a locally generated key pair comprising a public key and a private key, and creating the public key as a password management account;
s102, when an account password adding request sent by a user is received, account information to be added input by the user is obtained and added to the password management account;
s103, encrypting the received account information to be added through a preset encryption algorithm to obtain corresponding first account encryption information comprising an encryption ciphertext; the account information to be added comprises a website, an account and a password of the corresponding account;
s104, digitally signing the first account encrypted information through the private key to obtain a signature, sending second account encrypted information consisting of the signature, the first account encrypted information and the public key to a service center, so that the service center verifies the signature according to the public key, and uploading the second account password information to a block chain network after the verification is successful to realize management of the account password information.
In this embodiment, the block chain based password management method may be performed by an electronic device, and in particular, by one or more processors within the electronic device. The electronic device acquires an asymmetric key pair created by a local user side through an asymmetric encryption algorithm, sends a private key of the key pair to a user for storage, and uses a corresponding public key of the key pair as a password management account, wherein the key pair is only used for encrypting and decrypting data and is not used for sending transactions. It should be noted that the asymmetric encryption algorithm may be an RSA algorithm or an Elgamal algorithm, and the present invention is not limited in particular. The key pair is randomly generated, personal information can be completely isolated, anonymity is realized, and user information is protected.
In this embodiment, the preset encryption algorithm is an asymmetric encryption algorithm, that is, the received account information to be added is encrypted by a public key, and then can be decoded by a private key stored by a user, it should be noted that the asymmetric encryption algorithm includes RSA, Elgamal, a knapsack algorithm, Rabin, D-H, ECC (elliptic curve encryption algorithm), and the description of the present invention is omitted here. For example, an account to be stored is assumed to be a website login user name of a website, and the account is a website address or any account named by a name convenient for distinguishing websites, such as www.baidu.com, or hundred degrees. The password to be stored correspondingly is a login password of the corresponding website, for example: 666666. the client encrypts the user name and the password by using a public key to generate a ciphertext, and then converts the ciphertext into a base64 format character string (namely, performs ciphertext JSON formatting) to obtain the first account password information (namely, a first JSON string). It should be noted that, the ciphertext may be decrypted by inputting the private key. And then, a private key is used for digitally signing the encrypted information of the first account to obtain a signature, for example, a ciphertext 'xxxxxx' of the encrypted information of the first account is digitally signed by using the private key to obtain 'ssssssssssssss', then, the corresponding signature, the encrypted information of the first account and the public key are finally combined into second account password information (namely a second json string), the second account password information is sent to a service center and is decrypted by using the private key stored by a user, plaintext data are not sent, and the ciphertext is transmitted and stored, so that the data security is fundamentally protected.
After receiving the user uploading chain request, the service center uses the user public key to check and sign, and obtains a corresponding public key PBK, a signature sign, data and the like. Storing the request information into a local database for caching, inquiring the latest state of the user by taking the public key of the user as a key, and adding the new request into the latest state.
The first account number encryption information line is digitally signed through the private key to obtain a signature; and sending second account number encryption information consisting of the signature, the first account number encryption information and the public key to a service center, so that the service center verifies the signature according to the public key, and uploads the second account number password information to a block chain network after verification is successful, so as to realize the management of the account number password information, and the steps comprise:
the first account number encryption information line is digitally signed through the private key to obtain a signature; and sending second account number encryption information consisting of the signature, the first account number encryption information and the public key to a service center, so that the service center verifies the signature according to the public key, caches the second account number password information to a local database after the verification is successful, creates a transaction, formats the second account number password information as remark information to be put into the transaction after the data formatting, uploads the transaction to a block chain network, and adds a returned transaction ID to a database state table.
And the service center verifies the signature according to the public key, and if the verification fails, the service center terminates the processing and returns an error. And if the verification is passed, inquiring the account number to be added cached by the service center, so as to continuously inquire the latest state transaction id corresponding to the public key when the account number to be added corresponding to the public key does not exist, if the latest state transaction id corresponding to the public key is empty, adding the account number to be added for the first time, caching the account number data to be added to a local database, and adding the account number data to be added to an accounts table. And then, using the blockchain account number of the service center to create a transaction, putting the encrypted information of the second account number into the transaction as remark information, and sending the transaction, so that the encrypted information of the second account number is uploaded to a blockchain network, and when the uploading is successful, adding the returned transaction id into a database state table. Of course, if the account number to be added buffered by the service center is inquired and a record exists, the encrypted information of the second account number is directly cached in a local database, then JSON formatting is carried out on the encrypted information of the second account number, a transaction is created by using a block chain account in the service center, the encrypted information of the second account number is used as remark information to be put into the transaction, the transaction and data chaining are sent, and the returned transaction is added to a database state table.
The client encrypts the received account information to be added through a preset encryption algorithm to obtain corresponding first account encryption information; the account information to be added comprises a website, an account and a password of the corresponding account; the step that the account number encryption information comprises an encryption ciphertext comprises the following steps:
the client encrypts the received website and the account password respectively through public key encryption to obtain a first ciphertext and a second ciphertext; and splicing the first ciphertext and the second ciphertext to obtain the first account encryption information.
If the website is encrypted and the account password is encrypted through the public key respectively, then the two ciphertexts are spliced into a first json string, the first json string is digitally signed to obtain a signature, the first json string, the signature and the public key are spliced into a second json string, the second json string is transmitted finally and is sent to the service center, the first json string is encrypted to form a digitized signature text, the service center can verify the first json string through the signature text, and therefore the fact that the first json string is signed by a corresponding account is confirmed, and the content is not tampered.
In this embodiment, the Block (Block) is a storage unit, a link (chain) is implemented between blocks through a random hash (also called a hash algorithm), and a Block header (a Block header) of a subsequent Block includes a hash value of a previous Block, so that blocks are successively connected to each other to form a Block chain. The block chain (Blockchain) is characterized in that a plurality of nodes are related to each other by a string of nodes by using a cryptography method to generate a block, the block adopts a structure of a block head and a block body, data used for verifying the validity of recorded data in the block head and index data of a previous block are included in the block body, and the block body contains the recorded data within a certain time.
Functionally, a blockchain is a distributed database that is run by a group of distributed nodes and is used to store various records, such as records of virtual currency transactions. In terms of data structure, the blockchain includes a series of blocks, once a new block is added to the blockchain, the new block cannot be removed, and the blocks contain the recorded data for verifying the validity (anti-counterfeiting) of the recorded data and generating the next block. Taking the present invention as an example, the service center uploads second account password information to the blockchain network, where the second account password information depends on confirmation of a node in an operating blockchain, and when the second account password information is confirmed by a node for the first time, the second account password information is added to a latest block in the blockchain, and the block is sent to other nodes in the blockchain network for authentication, so that after passing the authentication, the validity of the generated block is confirmed and added to the blockchain, and when a sufficient block is confirmed, data cannot be reversed and tampered.
After the step of sending the second account encryption information composed of the signature, the first account encryption information, and the public key to a service center, so that the service center verifies the signature according to the public key, and after the verification succeeds, the second account encryption information is uploaded to a block chain network through the service center, so as to manage account encryption information, the method further includes:
sending the account password adding request to the service center, so that the service center analyzes second account password information according to the account password adding request to obtain a public key, an encrypted ciphertext and a signature, using the public key to carry out signature verification on the account password to be added, inquiring whether an account corresponding to the public key exists when the signature verification passes, inquiring whether the public key corresponds to a latest state transaction ID when the account corresponding to the public key does not exist, and adding the account into an account list when the latest state transaction ID is empty.
The block chain-based password management method further comprises the following steps: when a client receives an account password updating request sent by a user, acquiring account password information to be updated according to the account password updating request, and updating the account password information;
and sending the updated account password information to a block chain network through the service center so as to generate a block corresponding to the current service center after being verified by other nodes in the block chain network.
If the account password updating request can only modify the account password, after submitting a new password (plaintext) by inputting, for example, 999999, the public key firstly encrypts the plaintext "999999" and then converts the format of base64 to obtain a ciphertext: xxxxxxx, then combined into a json string: and then signing the json string by using a private key to obtain sssssssssss, finally combining the json strings, analyzing the json string after the service center receives an updating request to obtain a public key, a signature, an account password and a ciphertext, checking the signature by using the public key, terminating the processing if the signature checking fails, and returning an error. And if the verification and signing are passed continuously, updating a corresponding database cache, namely an accounts table, formatting data corresponding to the cache of the public key into a json string, then creating a transaction by using a service center block chain account, putting the json string into transaction remark information, sending a transaction and data uplink, and adding a returned transaction id into the database state table.
When the client receives an account password inquiry request and an account list which are sent by the user, the client sends a request: { "pbk": public key 16 ary string "} pull data (ciphertext) from the service center: and when the password needs to be checked, the check button is clicked, the private key carries out decryption display in real time, and the password plaintext is not cached. And the service center receives the query request, analyzes the json string to obtain the public key pbk, queries the cache of the database, namely the data corresponding to the public key of the accounts table, combines the data into the json string and returns the json string to the user.
When the client receives an account password deleting request sent by the user, the client clicks to delete the account password, the client caches a ciphertext, the ciphertext does not need to be encrypted, the json string is combined first, then the json string is signed by using a private key, ssssssssssss is obtained, the json string is finally synthesized and sent to a service center, the service center analyzes the json string to obtain a public key pbk, a signature sign and data, the public key is used for signature verification, and if signature verification fails, processing is terminated, and an error is returned. And if the verification is passed, deleting data of the corresponding database cache, namely accounts table data, formatting the data of the public key corresponding cache into a json string, then creating a transaction by using a service center block chain account, putting the json string into transaction remark information, sending the transaction and data uplink, and adding the returned transaction id into a database state table.
The password management method, the password management device and the computer-readable storage medium based on the block chain have the advantages that a public key is used as a password management account, account password information to be added input by a user is obtained and added to a password management account when an account password adding request sent by the user is received, and then the received account password information to be added is encrypted through public key adding to obtain corresponding account password encryption information; the account password encryption information comprises a website address, a signature and a ciphertext; and then, signature verification is carried out through a private key, and when the signature verification is passed, the account password encryption information is uploaded to the block chain network through a service center so as to realize management of the account password information. Therefore, the password management account generated by one public key manages the password information of a plurality of personal accounts of the user, the probability of losing prevention, tampering prevention and stealing prevention of the account password is improved, and the safety of account password management based on the block chain is further improved.
The invention also provides an electronic device 1. Fig. 2 is a schematic view of an internal structure of an electronic device according to an embodiment of the invention.
In this embodiment, the electronic device 1 may be a computer, an intelligent terminal or a server. The electronic device 1 comprises at least a memory 11, a processor 13, a communication bus 15 and a network interface 17. In this embodiment, the electronic device 1 is an intelligent terminal.
The memory 11 includes at least one type of readable storage medium, which includes a flash memory, a hard disk, a multimedia card, a card type memory (e.g., SD or DX memory, etc.), a magnetic memory, a magnetic disk, an optical disk, and the like. The memory 11 may in some embodiments be an internal storage unit of the electronic device, for example a hard disk of the electronic device. The memory 11 may be an external storage device of the electronic apparatus in other embodiments, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a flash Card (FlashCard), and the like, which are provided on the electronic apparatus. Further, the memory 11 may also include both an internal storage unit and an external storage device of the electronic apparatus. The memory 11 may be used not only to store application software installed in the electronic device 1 and various types of data, such as codes of the cipher management program 111 based on the block chain, but also to temporarily store data that has been output or is to be output.
The processor 13 may be a Central Processing Unit (CPU), controller, microcontroller, microprocessor or other data Processing chip in some embodiments, and is used for executing program codes stored in the memory 11 or Processing data.
The communication bus 15 is used to realize connection communication between these components.
The network interface 17 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface), and is typically used to establish a communication link between the electronic apparatus 1 and other electronic devices.
Optionally, the electronic device 1 may further comprise a user interface, which may comprise a Display (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface may also comprise a standard wired interface, a wireless interface. Alternatively, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode) touch device, or the like. The display, which may also be referred to as a display screen or display unit, is suitable for displaying information processed in the electronic device and for displaying a visualized user interface.
While FIG. 2 shows only the electronic device 1 with the components 11-17, those skilled in the art will appreciate that the configuration shown in FIG. 2 does not constitute a limitation of the electronic device, and may include fewer or more components than shown, or some components in combination, or a different arrangement of components.
In the embodiment of the electronic device 1 shown in fig. 2, a block chain based password management program 111 is stored in the memory 11; the processor 13, when executing the block chain based cryptographic management program 111 stored in the memory 11, implements the following steps:
s101, acquiring a locally generated key pair comprising a public key and a private key, and creating the public key as a password management account;
s102, when an account password adding request sent by a user is received, account information to be added input by the user is obtained and added to the password management account;
s103, encrypting the received account information to be added through a preset encryption algorithm to obtain corresponding first account encryption information comprising an encryption ciphertext; the account information to be added comprises a website, an account and a password of the corresponding account;
s104, digitally signing the first account encrypted information through the private key to obtain a signature, sending second account encrypted information consisting of the signature, the first account encrypted information and the public key to a service center, so that the service center verifies the signature according to the public key, and uploading the second account password information to a block chain network after the verification is successful to realize management of the account password information.
In this embodiment, the block chain based password management method may be performed by an electronic device, and in particular, by one or more processors within the electronic device. The electronic device acquires an asymmetric key pair created by a local user side through an asymmetric encryption algorithm, sends a private key of the key pair to a user for storage, and uses a corresponding public key of the key pair as a password management account, wherein the key pair is only used for encrypting and decrypting data and is not used for sending transactions. It should be noted that the asymmetric encryption algorithm may be an RSA algorithm or an Elgamal algorithm, and the present invention is not limited in particular. The key pair is randomly generated, personal information can be completely isolated, anonymity is realized, and user information is protected.
In this embodiment, the preset encryption algorithm is an asymmetric encryption algorithm, that is, the received account information to be added is encrypted by a public key, and then can be decoded by a private key stored by a user, it should be noted that the asymmetric encryption algorithm includes RSA, Elgamal, a knapsack algorithm, Rabin, D-H, ECC (elliptic curve encryption algorithm), and the description of the present invention is omitted here. For example, an account to be stored is assumed to be a website login user name of a website, and the account is a website address or any account named by a name convenient for distinguishing websites, such as www.baidu.com, or hundred degrees. The password to be stored correspondingly is a login password of the corresponding website, for example: 666666. the client encrypts the user name and the password by using a public key to generate a ciphertext, and then converts the ciphertext into a base64 format character string (namely, performs ciphertext JSON formatting) to obtain the first account password information (namely, a first JSON string). It should be noted that, the ciphertext may be decrypted by inputting the private key. And then, a private key is used for digitally signing the encrypted information of the first account to obtain a signature, for example, a ciphertext 'xxxxxx' of the encrypted information of the first account is digitally signed by using the private key to obtain 'ssssssssssssss', then, the corresponding signature, the encrypted information of the first account and the public key are finally combined into second account password information (namely a second json string), the second account password information is sent to a service center and is decrypted by using the private key stored by a user, plaintext data are not sent, and the ciphertext is transmitted and stored, so that the data security is fundamentally protected.
After receiving the user uploading chain request, the service center uses the user public key to check and sign, and obtains a corresponding public key PBK, a signature sign, data and the like. Storing the request information into a local database for caching, inquiring the latest state of the user by taking the public key of the user as a key, and adding the new request into the latest state.
The first account number encryption information line is digitally signed through the private key to obtain a signature; and sending second account number encryption information consisting of the signature, the first account number encryption information and the public key to a service center, so that the service center verifies the signature according to the public key, and uploads the second account number password information to a block chain network after verification is successful, so as to realize the management of the account number password information, and the steps comprise:
the first account number encryption information line is digitally signed through the private key to obtain a signature; and sending second account number encryption information consisting of the signature, the first account number encryption information and the public key to a service center, so that the service center verifies the signature according to the public key, caches the second account number password information to a local database after the verification is successful, creates a transaction, formats the second account number password information as remark information to be put into the transaction after the data formatting, uploads the transaction to a block chain network, and adds a returned transaction ID to a database state table.
And the service center verifies the signature according to the public key, and if the verification fails, the service center terminates the processing and returns an error. And if the verification is passed, inquiring the account number to be added cached by the service center, so as to continuously inquire the latest state transaction id corresponding to the public key when the account number to be added corresponding to the public key does not exist, if the latest state transaction id corresponding to the public key is empty, adding the account number to be added for the first time, caching the account number data to be added to a local database, and adding the account number data to be added to an accounts table. And then, using the blockchain account number of the service center to create a transaction, putting the encrypted information of the second account number into the transaction as remark information, and sending the transaction, so that the encrypted information of the second account number is uploaded to a blockchain network, and when the uploading is successful, adding the returned transaction id into a database state table. Of course, if the account number to be added buffered by the service center is inquired and a record exists, the encrypted information of the second account number is directly cached in a local database, then JSON formatting is carried out on the encrypted information of the second account number, a transaction is created by using a block chain account in the service center, the encrypted information of the second account number is used as remark information to be put into the transaction, the transaction and data chaining are sent, and the returned transaction is added to a database state table.
The client encrypts the received account information to be added through a preset encryption algorithm to obtain corresponding first account encryption information; the account information to be added comprises a website, an account and a password of the corresponding account; the step that the account number encryption information comprises an encryption ciphertext comprises the following steps:
the client encrypts the received website and the account password respectively through public key encryption to obtain a first ciphertext and a second ciphertext; and splicing the first ciphertext and the second ciphertext to obtain the first account encryption information.
If the website is encrypted and the account password is encrypted through the public key respectively, then the two ciphertexts are spliced into a first json string, the first json string is digitally signed to obtain a signature, the first json string, the signature and the public key are spliced into a second json string, the second json string is transmitted finally and is sent to the service center, the first json string is encrypted to form a digitized signature text, the service center can verify the first json string through the signature text, and therefore the fact that the first json string is signed by a corresponding account is confirmed, and the content is not tampered.
In this embodiment, the Block (Block) is a storage unit, a link (chain) is implemented between blocks through a random hash (also called a hash algorithm), and a Block header (a Block header) of a subsequent Block includes a hash value of a previous Block, so that blocks are successively connected to each other to form a Block chain. The block chain (Blockchain) is characterized in that a plurality of nodes are related to each other by a string of nodes by using a cryptography method to generate a block, the block adopts a structure of a block head and a block body, data used for verifying the validity of recorded data in the block head and index data of a previous block are included in the block body, and the block body contains the recorded data within a certain time.
Functionally, a blockchain is a distributed database that is run by a group of distributed nodes and is used to store various records, such as records of virtual currency transactions. In terms of data structure, the blockchain includes a series of blocks, once a new block is added to the blockchain, the new block cannot be removed, and the blocks contain the recorded data for verifying the validity (anti-counterfeiting) of the recorded data and generating the next block. Taking the present invention as an example, the service center uploads second account password information to the blockchain network, where the second account password information depends on confirmation of a node in an operating blockchain, and when the second account password information is confirmed by a node for the first time, the second account password information is added to a latest block in the blockchain, and the block is sent to other nodes in the blockchain network for authentication, so that after passing the authentication, the validity of the generated block is confirmed and added to the blockchain, and when a sufficient block is confirmed, data cannot be reversed and tampered.
After the step of sending the second account encryption information composed of the signature, the first account encryption information, and the public key to a service center, so that the service center verifies the signature according to the public key, and after the verification succeeds, the second account encryption information is uploaded to a block chain network through the service center, so as to manage account encryption information, the method further includes:
sending the account password adding request to the service center, so that the service center analyzes second account password information according to the account password adding request to obtain a public key, an encrypted ciphertext and a signature, using the public key to carry out signature verification on the account password to be added, inquiring whether an account corresponding to the public key exists when the signature verification passes, inquiring whether the public key corresponds to a latest state transaction ID when the account corresponding to the public key does not exist, and adding the account into an account list when the latest state transaction ID is empty.
The block chain-based password management method further comprises the following steps: when a client receives an account password updating request sent by a user, acquiring account password information to be updated according to the account password updating request, and updating the account password information;
and sending the updated account password information to a block chain network through the service center so as to generate a block corresponding to the current service center after being verified by other nodes in the block chain network.
If the account password updating request can only modify the account password, after submitting a new password (plaintext) by inputting, for example, 999999, the public key firstly encrypts the plaintext "999999" and then converts the format of base64 to obtain a ciphertext: xxxxxxx, then combined into a json string: and then signing the json string by using a private key to obtain sssssssssss, finally combining the json strings, analyzing the json string after the service center receives an updating request to obtain a public key, a signature, an account password and a ciphertext, checking the signature by using the public key, terminating the processing if the signature checking fails, and returning an error. And if the verification and signing are passed continuously, updating a corresponding database cache, namely an accounts table, formatting data corresponding to the cache of the public key into a json string, then creating a transaction by using a service center block chain account, putting the json string into transaction remark information, sending a transaction and data uplink, and adding a returned transaction id into the database state table.
When the client receives an account password inquiry request and an account list which are sent by the user, the client sends a request: { "pbk": public key 16 ary string "} pull data (ciphertext) from the service center: and when the password needs to be checked, the check button is clicked, the private key carries out decryption display in real time, and the password plaintext is not cached. And the service center receives the query request, analyzes the json string to obtain the public key pbk, queries the cache of the database, namely the data corresponding to the public key of the accounts table, combines the data into the json string and returns the json string to the user.
When the client receives an account password deleting request sent by the user, the client clicks to delete the account password, the client caches a ciphertext, the ciphertext does not need to be encrypted, the json string is combined first, then the json string is signed by using a private key, ssssssssssss is obtained, the json string is finally synthesized and sent to a service center, the service center analyzes the json string to obtain a public key pbk, a signature sign and data, the public key is used for signature verification, and if signature verification fails, processing is terminated, and an error is returned. And if the verification is passed, deleting data of the corresponding database cache, namely accounts table data, formatting the data of the public key corresponding cache into a json string, then creating a transaction by using a service center block chain account, putting the json string into transaction remark information, sending the transaction and data uplink, and adding the returned transaction id into a database state table.
The password management method, the password management device and the computer-readable storage medium based on the block chain have the advantages that a public key is used as a password management account, account password information to be added input by a user is obtained and added to a password management account when an account password adding request sent by the user is received, and then the received account password information to be added is encrypted through public key adding to obtain corresponding account password encryption information; the account password encryption information comprises a website address, a signature and a ciphertext; and then, signature verification is carried out through a private key, and when the signature verification is passed, the account password encryption information is uploaded to the block chain network through a service center so as to realize management of the account password information. Therefore, the password management account generated by one public key manages the password information of a plurality of personal accounts of the user, the probability of losing prevention, tampering prevention and stealing prevention of the account password is improved, and the safety of account password management based on the block chain is further improved.
Furthermore, an embodiment of the present invention further provides a computer-readable storage medium, where a block chain based password management program 111 is stored on the computer-readable storage medium, and the block chain based password management program 111 is executable by one or more processors to implement the following operations:
acquiring a locally generated key pair comprising a public key and a private key, and establishing the public key as a password management account;
when an account password adding request sent by a user is received, account information to be added input by the user is obtained and added to the password management account;
encrypting the received account information to be added through a preset encryption algorithm to obtain corresponding first account encryption information comprising an encryption ciphertext; the account information to be added comprises a website, an account and a password of the corresponding account;
the first account encryption information is digitally signed through the private key to obtain a signature, second account encryption information consisting of the signature, the first account encryption information and the public key is sent to a service center, so that the service center verifies the signature according to the public key, and after verification is successful, the second account encryption information is uploaded to a block chain network to achieve management of the account encryption information.
The embodiment of the computer readable storage medium of the present invention is substantially the same as the embodiments of the electronic device and the method, and will not be described herein in a repeated manner.
Alternatively, in other embodiments, the block chain based password management program 111 may be further divided into one or more modules, and the one or more modules are stored in the memory 11 and executed by one or more processors (in this embodiment, the processor 13) to implement the present invention, where the module referred to in the present invention refers to a series of computer program instruction segments capable of performing a specific function, and is used for describing an execution process of the block chain based password management program in the electronic device.
For example, referring to fig. 3, a schematic block diagram of the block chain based password management program 111 for centrally purchasing evaluation indexes of a pharmacy instrument in an embodiment of the electronic device of the present invention is shown, in this embodiment, the block chain based password management program 111 may be divided into the key pair obtaining module 10, the receiving module 20, the encryption module 30, and the signature obtaining module 40, which exemplarily:
the key pair obtaining module 10 is configured to obtain a locally generated key pair including a public key and a private key, and create the public key as a password management account;
the receiving module 20 is configured to, when receiving an account password adding request sent by a user, obtain account information to be added input by the user, and add the account information to the password management account;
the encryption module 30 is configured to encrypt the received account information to be added through a preset encryption algorithm to obtain corresponding first account encryption information including an encryption ciphertext; the account information to be added comprises a website, an account and a password of the corresponding account;
the signature obtaining module 40 is configured to digitally sign the first account encryption information through the private key to obtain a signature, and send second account encryption information composed of the signature, the first account encryption information, and the public key to a service center, so that the service center verifies the signature according to the public key, and uploads the second account encryption information to a block chain network after verification is successful, so as to manage account encryption information.
The functions or operation steps of the key pair obtaining module 10, the receiving module 20, the encrypting module 30, and the signature obtaining module 40 when executed are substantially the same as those of the above embodiments, and are not described herein again.
It should be noted that the above-mentioned numbers of the embodiments of the present invention are merely for description, and do not represent the merits of the embodiments. And the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, apparatus, article, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, apparatus, article, or method. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, apparatus, article, or method that includes the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A cipher management method based on a block chain is characterized in that the cipher management method based on the block chain comprises the following steps:
acquiring a locally generated key pair comprising a public key and a private key, and establishing the public key as a password management account;
when an account password adding request sent by a user is received, account information to be added input by the user is obtained and added to the password management account;
encrypting the received account information to be added through a preset encryption algorithm to obtain corresponding first account encryption information comprising an encryption ciphertext; the account information to be added comprises a website, an account and a password of the corresponding account;
the first account encryption information is digitally signed through the private key to obtain a signature, second account encryption information consisting of the signature, the first account encryption information and the public key is sent to a service center, so that the service center verifies the signature according to the public key, and after verification is successful, the second account encryption information is uploaded to a block chain network to achieve management of the account encryption information.
2. The blockchain-based password management method according to claim 1, wherein the first account encryption information line is digitally signed by the private key to obtain a signature; and sending second account number encryption information consisting of the signature, the first account number encryption information and the public key to a service center, so that the service center verifies the signature according to the public key, and uploads the second account number password information to a block chain network after verification is successful, so as to realize the management of the account number password information, and the steps comprise:
digitally signing the encrypted information line of the first account by the private key to obtain a signature;
sending second account encryption information consisting of the signature, the first account encryption information and the public key to a service center, so that the service center verifies the signature according to the public key and caches the second account password information to a local database after the verification is successful;
and creating a transaction, performing data formatting on the second account password information, putting the second account password information into the transaction as remark information, uploading the transaction to a block chain network, and adding a returned transaction ID to a database state table.
3. The blockchain-based password management method according to claim 1, wherein after the step of sending second account encryption information, which is composed of the signature, the first account encryption information, and the public key, to a service center, so that the service center verifies the signature according to the public key, and after the verification succeeds, uploads the second account encryption information to a blockchain network through the service center, so as to implement management of the account encryption information, the method further comprises:
sending the account password adding request to the service center, so that the service center analyzes second account password information according to the account password adding request to obtain a public key, an encrypted ciphertext and a signature, and performing signature verification on the account password to be added by using the public key;
and when the signature verification sent by the service center is received and passed, inquiring whether the account corresponding to the public key exists, when the account corresponding to the public key does not exist, inquiring the latest state transaction ID corresponding to the public key, and when the latest state transaction ID is empty, adding the account into an account list.
4. The cipher management method based on the blockchain according to claim 1, wherein the received account information to be added is encrypted by a preset encryption algorithm to obtain corresponding first account encryption information; the account information to be added comprises a website, an account and a password of the corresponding account; the step that the account number encryption information comprises an encryption ciphertext comprises the following steps:
the client encrypts the received website and the account password respectively through public key encryption to obtain a first ciphertext and a second ciphertext;
and splicing the first ciphertext and the second ciphertext to obtain the first account encryption information.
5. The blockchain-based cryptographic management method of claim 1, wherein the blockchain-based cryptographic management method further comprises:
when a client receives an account password updating request sent by a user, acquiring account password information to be updated according to the account password updating request, and updating the account password information;
and the client sends the updated account password information to a block chain network through the service center so as to generate a block corresponding to the current service center after being verified by other nodes in the block chain network.
6. An electronic device, comprising a memory and a processor, the memory having stored thereon a blockchain based cryptographic management program executable on the processor, the blockchain based cryptographic management program when executed by the processor implementing the steps of:
acquiring a locally generated key pair comprising a public key and a private key, and establishing the public key as a password management account;
when an account password adding request sent by a user is received, account information to be added input by the user is obtained and added to the password management account;
encrypting the received account information to be added through a preset encryption algorithm to obtain corresponding first account encryption information comprising an encryption ciphertext; the account information to be added comprises a website, an account and a password of the corresponding account;
the first account encryption information is digitally signed through the private key to obtain a signature, second account encryption information consisting of the signature, the first account encryption information and the public key is sent to a service center, so that the service center verifies the signature according to the public key, and after verification is successful, the second account encryption information is uploaded to a block chain network to achieve management of the account encryption information.
7. The electronic device of claim 6, wherein the first account number encryption information line is digitally signed by the private key to obtain a signature; and sending second account number encryption information consisting of the signature, the first account number encryption information and the public key to a service center, so that the service center verifies the signature according to the public key, and uploads the second account number password information to a block chain network after verification is successful, so as to realize the management of the account number password information, and the steps comprise:
digitally signing the encrypted information line of the first account by the private key to obtain a signature;
sending second account encryption information consisting of the signature, the first account encryption information and the public key to a service center, so that the service center verifies the signature according to the public key and caches the second account password information to a local database after the verification is successful;
and creating a transaction, performing data formatting on the second account password information, putting the second account password information into the transaction as remark information, uploading the transaction to a block chain network, and adding a returned transaction ID to a database state table.
8. The electronic device according to claim 7, wherein after the step of sending second account encryption information composed of the signature, the first account encryption information, and the public key to a service center, so that the service center verifies the signature according to the public key, and after the verification succeeds, the second account encryption information is uploaded to a blockchain network through the service center, so as to manage account encryption information, the method further comprises:
sending the account password adding request to the service center, so that the service center analyzes second account password information according to the account password adding request to obtain a public key, an encrypted ciphertext and a signature, and performing signature verification on the account password to be added by using the public key;
and when the signature verification sent by the service center is received and passed, inquiring whether the account corresponding to the public key exists, when the account corresponding to the public key does not exist, inquiring the latest state transaction ID corresponding to the public key, and when the latest state transaction ID is empty, adding the account into an account list.
9. The electronic device according to claim 6, wherein the received account information to be added is encrypted by a preset encryption algorithm to obtain corresponding first account encryption information; the account information to be added comprises a website, an account and a password of the corresponding account; the step that the account number encryption information comprises an encryption ciphertext comprises the following steps:
the client encrypts the received website and the account password respectively through public key encryption to obtain a first ciphertext and a second ciphertext;
and splicing the first ciphertext and the second ciphertext to obtain the first account encryption information.
10. A computer-readable storage medium having stored thereon a blockchain based cryptographic management program executable by one or more processors to perform the steps of the blockchain based cryptographic management method of any one of claims 1 to 5.
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| PCT/CN2020/106007 WO2021139140A1 (en) | 2020-01-08 | 2020-07-30 | Password management method and apparatus employing blockchain, electronic device, and computer-readable storage medium |
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| CN202010016000.6A CN111241533A (en) | 2020-01-08 | 2020-01-08 | Block chain-based password management method and device and computer-readable storage medium |
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| CN114969808B (en) * | 2022-05-07 | 2023-09-19 | 中移互联网有限公司 | Account management method and device, electronic equipment and storage medium |
| CN115086041A (en) * | 2022-06-16 | 2022-09-20 | 北京天融信网络安全技术有限公司 | Account management method and device, electronic equipment and computer readable storage medium |
| CN115426331A (en) * | 2022-08-30 | 2022-12-02 | 中国工商银行股份有限公司 | Mail transmission method, device, computer equipment and storage medium |
| CN115426331B (en) * | 2022-08-30 | 2024-03-22 | 中国工商银行股份有限公司 | Mail transmission method, mail transmission device, computer equipment and storage medium |
| CN117611330A (en) * | 2024-01-23 | 2024-02-27 | 天津金城银行股份有限公司 | Credit data processing system, method, device, equipment and medium |
| CN117611330B (en) * | 2024-01-23 | 2024-04-09 | 天津金城银行股份有限公司 | Credit data processing system, method, device, equipment and medium |
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