CN109995532A - A kind of online management method and system of terminal master key - Google Patents
A kind of online management method and system of terminal master key Download PDFInfo
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- CN109995532A CN109995532A CN201910291085.6A CN201910291085A CN109995532A CN 109995532 A CN109995532 A CN 109995532A CN 201910291085 A CN201910291085 A CN 201910291085A CN 109995532 A CN109995532 A CN 109995532A
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- 238000007726 management method Methods 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 abstract description 2
- 230000004044 response Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/06—Network architectures or network communication protocols for network security for supporting key management in a packet data network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
- H04L9/0822—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) using key encryption key
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
- H04L9/0869—Generation of secret information including derivation or calculation of cryptographic keys or passwords involving random numbers or seeds
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/30—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy
- H04L9/3066—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy involving algebraic varieties, e.g. elliptic or hyper-elliptic curves
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Theoretical Computer Science (AREA)
- Computing Systems (AREA)
- Algebra (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Mathematical Physics (AREA)
- Pure & Applied Mathematics (AREA)
- Computer Hardware Design (AREA)
- Storage Device Security (AREA)
Abstract
The embodiment of the invention discloses a kind of online management method and system of terminal master key, which comprises registers terminal in key management backstage；The response key application of key management backstage distributes public key to terminal；Terminal generates encryption key, and obtains encryption key ciphertext using public key encryption；Key management backstage uses private key decryption encryption key ciphertext to obtain encryption key and store；Key management backstage uses encryption key symmetric cryptography terminal master key to obtain master key ciphertext；Terminal obtains terminal master key using encryption key decryption master key ciphertext and stores.By the way of obtaining terminal master key online, effectively reduce human input, and without offline secure equipment, greatly reduce cost of human resources and equipment purchase cost, by way of asymmetric encryption mode and generating encryption key random number, the safety in master key management process is effectively enhanced.
Description
Technical field
The present embodiments relate to field of information security technology, and in particular to a kind of terminal master key online management method and
System.
Background technique
It is well known that various types of terminal devices are widely used to complete financial transaction, such as sales counter cryptographic key in bank
Disk, POS, ATM etc. all house a certain number of terminal keys in every terminal, and terminal key is close mainly for the protection of client
The safety of the sensitive informations such as code and data transmission, is realized, working key is also referred to as by master key/working key system
Data key is mainly used for encrypted transmission data, including (TerminalPIN encryptionKey, TPK are used PIN key
In encryption Private Banking clip pin PIN), MAC key (TerminalAdministrative Key, TAK, for calculate verification
Message authentication codes MAC) etc., regular periodic replacement is needed, terminal master key (Zone MasterKey, ZMK) is located at work
The upper layer for making key is mainly used for encrypting the working key of next level, guarantees safety of the working key on transmission line
Property.With the rapidly growth of various terminal equipment quantity, how efficiently the security management problem of terminal key becomes increasingly conspicuous,
The close safety management of one machine one is carried out to a large amount of terminal key, becomes many banks problem anxious to be resolved.
The acquisition of terminal master key mainly uses two kinds of general ways at present: (1) when terminal device dispatches from the factory using system
One factory key downloads more new master key when terminal access bank's cipher key system is initialized again, and such mode exists
The security risk of master key leakage；(2) before terminal device accesses bank's cipher key system, using safety equipment from cipher key system
It obtains master key to be then injected into terminal by the mode under line again, but this mode considerably increases cost of labor and safety
The input cost of equipment.
Summary of the invention
For this purpose, the embodiment of the present invention provides a kind of online management method and system of terminal master key, it is existing to solve
High, the artificial and high equipment input cost problem of security risk existing for terminal master key acquisition modes.
To achieve the goals above, the embodiment of the present invention provides the following technical solutions:
According to a first aspect of the embodiments of the present invention, a kind of online management method of terminal master key, the side are proposed
Method includes:
The unique identification information of using terminal registers the terminal in key management backstage, the key management
The public key and private key pair of asymmetric encryption are stored in backstage；
The terminal initiates online key application to key management backstage, key management backstage respond the key application to
The pre-stored public key of the terminal distribution, the terminal receive the public key and are stored；
The terminal generates encryption key and stores, and obtains encryption key using encryption key described in the public key encryption
Ciphertext；
The encryption key ciphertext is sent to key management backstage, key management backstage use and the public affairs by the terminal
The matched private key of key decrypts the encryption key ciphertext and obtains the encryption key and store；
The key management backstage generates and distributes terminal master key, and using whole described in the encryption key symmetric cryptography
Master key is held to obtain master key ciphertext；
The master key ciphertext is sent to the terminal by the key management platform, and the terminal is close using the encryption
Key decrypts the master key ciphertext and obtains the terminal master key and store.
Further, the public key and private key pair of asymmetric encryption are stored in the key management backstage, further includes:
To the public key and private key to regularly updating.
Further, the public key and private key pair of asymmetric encryption are stored in the key management backstage, further includes:
The public key and private key pair are obtained using SM2 rivest, shamir, adelman.
Further, described to obtain master key ciphertext using terminal master key described in the encryption key symmetric cryptography, also
Include:
The terminal master key is encrypted using SM4 symmetric encipherment algorithm.
Further, the encryption key is generating random number key.
Further, the unique identification information includes Termination ID, number information.
According to a second aspect of the embodiments of the present invention, a kind of online management system of terminal master key, the system are proposed
System includes terminal and key management backstage；
The terminal includes:
Encryption key generation module, for generating and storing encryption key；
Public key storage module, the public key distributed for storing key management platform to the terminal；
Encryption key ciphertext module, for obtaining encryption key ciphertext using encryption key described in the public key encryption, and
The encryption key ciphertext is sent to key management backstage；
Master key deciphering module, for using the encryption key to carry out the master key ciphertext that key management platform is sent
Decryption, obtains the terminal master key and stores, the master key ciphertext is by using the encryption key symmetric cryptography terminal
Master key obtains；
The key management backstage includes:
Registration module, the unique identification information for using terminal carry out the terminal in the key management backstage
Registration；
Public private key module, for generating and storing the public key and private key pair of asymmetric encryption；
Encryption key decryption module, the private key decryption terminal that the public key for using with encrypting the encryption key matches
The encryption key ciphertext sent, obtains the encryption key and stores；
Master key module, for generating and distributing terminal master key；
Master key ciphertext module, it is close for obtaining master key using terminal master key described in the encryption key symmetric cryptography
Text, and the master key ciphertext is sent to terminal.
Further, the public private key module is also used to the public key and private key to regularly updating.
The embodiment of the present invention has the advantages that
A kind of online management method and system for terminal master key that the embodiment of the present invention proposes obtain terminal using online
The mode of master key, effectively reduces human input, and without offline secure equipment, greatly reduce cost of human resources and
It is close effectively to enhance master by way of asymmetric encryption mode and generating encryption key random number for equipment purchase cost
Safety in key management process.
Detailed description of the invention
It, below will be to embodiment party in order to illustrate more clearly of embodiments of the present invention or technical solution in the prior art
Formula or attached drawing needed to be used in the description of the prior art are briefly described.It should be evident that the accompanying drawings in the following description is only
It is merely exemplary, it for those of ordinary skill in the art, without creative efforts, can also basis
The attached drawing of offer, which is extended, obtains other implementation attached drawings.
Fig. 1 is a kind of flow diagram of the online management method for terminal master key that the embodiment of the present invention 1 provides.
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily, it is clear that described embodiment is the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
Embodiment 1
As shown in Figure 1, the present embodiment proposes a kind of online management method of terminal master key, this method includes following step
It is rapid:
S10, using terminal unique identification information terminal is registered in key management backstage, key management backstage
In be stored with the public key and private key pair of asymmetric encryption.Unique identification information includes Termination ID, terminal number information etc..It is asymmetric
It encrypts and decrypts in encryption and use two different keys i.e. public key and private key, the present embodiment uses SM2 asymmetric encryption
Algorithm obtains public key and private key pair, and to public key and private key to regularly updating.SM2 rivest, shamir, adelman use is substantially ellipse
Circular curve algorithm structure, computation complexity reaches complete exponential, memory space 192-256bit, compared to RSA Algorithm password
Complexity is higher, processing speed faster, machine performance consumption it is smaller, decryption enciphering rate is faster.
S20, terminal initiate online key application to key management backstage, and the response key application of key management backstage is to terminal
The pre-stored public key of distribution, terminal receive public key and are stored.The quantity of the ATM of each member's row or POS terminal generally all compared with
Greatly, more or one group of terminal device can share a public key.
S30, terminal generate encryption key and store, and obtain encryption key ciphertext using public key encryption encryption key.It can
128 random number encryption keys, randomness with higher and management security are generated by random number generator.
Encryption key ciphertext is sent to key management backstage by S40, terminal, and key management backstage uses and public key match
Private key decryption encryption key ciphertext obtains encryption key and stores.
S50, key management backstage generate and distribute terminal master key, and use encryption key symmetric cryptography terminal master key
Obtain master key ciphertext.There was only a kind of key in symmetric cryptography, and be private, if decrypting must allow other side to know
Key, so guaranteeing that its safety is ensuring that the safety of key, the present embodiment is close to terminal master using SM4 symmetric encipherment algorithm
Key is encrypted, and SM4 is the close packet data algorithm of state, and it is a kind of symmetric key that block encryption, which is also known as block encryption or block encryption,
Algorithm, it will be divided into multiple isometric modules (block) in plain text, is encrypted respectively using determining algorithm and symmetric key to every group
Decryption, key length and block length are 128.
Master key ciphertext is sent to terminal by S60, key management platform, and terminal uses encryption key decryption master key ciphertext
It obtains terminal master key and is being locally stored.
By the way of obtaining terminal master key online, human input is effectively reduced, and without offline secure equipment,
Cost of human resources and equipment purchase cost are greatly reduced, asymmetric encryption mode and the side of generation encryption key are passed through
Formula effectively enhances the safety in cipher key management procedures.
Embodiment 2
Corresponding with above-described embodiment 1, the present embodiment proposes a kind of online management system of terminal master key, this is
System includes terminal and key management backstage.
Terminal includes encryption key generation module, public key storage module, encryption key ciphertext module, master key deciphering module
With master key deciphering module.Wherein, encryption key generation module, for generating and storing encryption key；Public key storage module is used
In the public key that storage key management platform is distributed to terminal；Encryption key ciphertext module, for using public key encryption encryption key
Encryption key ciphertext is obtained, and encryption key ciphertext is sent to key management backstage；Master key deciphering module adds for using
The master key ciphertext that close key pair key management platform is sent is decrypted, and obtains terminal master key and stores, master key ciphertext
It is obtained by using encryption key symmetric cryptography terminal master key.
Key management backstage includes that registration module, public private key module, encryption key decryption module, master key module and master are close
Key ciphertext module.Wherein, registration module, the unique identification information for using terminal carry out terminal in key management backstage
Registration；Public private key module, for generating and store the public key and private key pair of asymmetric encryption, be also used to public key and private key into
Row regularly updates；Encryption key decryption module, for using the private key decryption terminal to match with the public key of encrypted cryptographic key
The encryption key ciphertext of transmission obtains encryption key and stores；Master key module, for generating and distributing terminal master key；It is main
Key ciphertext module, for obtaining master key ciphertext using encryption key symmetric cryptography terminal master key, and by master key ciphertext
It is sent to terminal.
Function performed by each component is equal in a kind of online management system of terminal master key provided in an embodiment of the present invention
It elaborates in a kind of online management method of terminal master key provided by the embodiment 1, will not be described in great detail here.
Although above having used general explanation and specific embodiment, the present invention is described in detail, at this
On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements without departing from theon the basis of the spirit of the present invention are fallen within the scope of the claimed invention.
Claims (8)
1. a kind of online management method of terminal master key, which is characterized in that the described method includes:
The unique identification information of using terminal registers the terminal in key management backstage, the key management backstage
In be stored with the public key and private key pair of asymmetric encryption；
The terminal initiates online key application to key management backstage, and key management backstage responds the key application to described
The pre-stored public key of terminal distribution, the terminal receive the public key and are stored；
The terminal generates encryption key and stores, and close using the acquisition encryption key of encryption key described in the public key encryption
Text；
The encryption key ciphertext is sent to key management backstage, key management backstage use and the public key by the terminal
The private key matched decrypts the encryption key ciphertext and obtains the encryption key and store；
The key management backstage generates and distributes terminal master key, and uses terminal master described in the encryption key symmetric cryptography
Key obtains master key ciphertext；
The master key ciphertext is sent to the terminal by the key management platform, and the terminal uses the encryption key solution
The close master key ciphertext obtains the terminal master key and stores.
2. a kind of online management method of terminal master key according to claim 1, which is characterized in that the key management
The public key and private key pair of asymmetric encryption are stored in backstage, further includes:
To the public key and private key to regularly updating.
3. a kind of online management method of terminal master key according to claim 1, which is characterized in that the key management
The public key and private key pair of asymmetric encryption are stored in backstage, further includes:
The public key and private key pair are obtained using SM2 rivest, shamir, adelman.
4. a kind of online management method of terminal master key according to claim 1, which is characterized in that described in the use
Terminal master key described in encryption key symmetric cryptography obtains master key ciphertext, further includes:
The terminal master key is encrypted using SM4 symmetric encipherment algorithm.
5. a kind of online management method of terminal master key according to claim 1, which is characterized in that the encryption key
For generating random number key.
6. a kind of online management method of terminal master key according to claim 1, which is characterized in that the unique identification
Information includes Termination ID, number information.
7. a kind of online management system of terminal master key, which is characterized in that the system comprises terminals and key management backstage；
The terminal includes:
Encryption key generation module, for generating and storing encryption key；
Public key storage module, the public key distributed for storing key management platform to the terminal；
Encryption key ciphertext module, for obtaining encryption key ciphertext using encryption key described in the public key encryption, and by institute
It states encryption key ciphertext and is sent to key management backstage；
Master key deciphering module, for being solved using the encryption key to the master key ciphertext that key management platform is sent
It is close, it obtains the terminal master key and stores, the master key ciphertext is by using the encryption key symmetric cryptography terminal master
Key obtains；
The key management backstage includes:
Registration module, the unique identification information for using terminal infuse the terminal in the key management backstage
Volume；
Public private key module, for generating and storing the public key and private key pair of asymmetric encryption；
Encryption key decryption module, the private key decryption terminal that the public key for using with encrypting the encryption key matches are sent
The encryption key ciphertext, obtain the encryption key and store；
Master key module, for generating and distributing terminal master key；
Master key ciphertext module, for obtaining master key ciphertext using terminal master key described in the encryption key symmetric cryptography,
And the master key ciphertext is sent to terminal.
8. a kind of online management system of terminal master key according to claim 7, which is characterized in that the public and private key
Module is also used to the public key and private key to regularly updating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910291085.6A CN109995532A (en) | 2019-04-11 | 2019-04-11 | A kind of online management method and system of terminal master key |
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| CN201910291085.6A CN109995532A (en) | 2019-04-11 | 2019-04-11 | A kind of online management method and system of terminal master key |
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Cited By (4)
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| CN110430052A (en) * | 2019-08-05 | 2019-11-08 | 中国工商银行股份有限公司 | A kind of online filling method and device of POS key |
| CN111737660A (en) * | 2020-06-28 | 2020-10-02 | 浙江大华技术股份有限公司 | Method, system and storage medium for realizing software authorization |
| CN112182599A (en) * | 2020-09-15 | 2021-01-05 | 中信银行股份有限公司 | Method and device for automatically loading master key, electronic equipment and readable storage medium |
| CN113708923A (en) * | 2021-07-29 | 2021-11-26 | 银盛支付服务股份有限公司 | Method and system for remotely downloading master key |
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