CN103929303B - A kind of key management apparatus of metering automation system - Google Patents
A kind of key management apparatus of metering automation system Download PDFInfo
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- CN103929303B CN103929303B CN201310009523.8A CN201310009523A CN103929303B CN 103929303 B CN103929303 B CN 103929303B CN 201310009523 A CN201310009523 A CN 201310009523A CN 103929303 B CN103929303 B CN 103929303B
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- 238000007726 management method Methods 0.000 claims description 198
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 230000007547 defect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The present invention uses a kind of Novel measuring automated system key management apparatus, and secure encrypted transmission is carried out by way of key, symmetric cryptographic algorithm is combined with public key cryptosyst, is easy to the characteristic of encryption key distribution and the high efficiency of symmetric cryptographic algorithm using public key cryptosyst.The hierarchical layered safety management of key is carried out by key management system.
Description
Technical field
The invention mainly relates to measurement of power automatic technology and method, in more specific words it, the present invention relates to one kind
The key management method of Novel measuring automated system and the key management that secure encrypted transmission is carried out by way of key
Equipment.
Background technology
Current metering automation system data transmission is mainly carried out with clear data and password addend according to two methods.It is right
It is stored in the management of password using database.
It is primarily present following defect：Password is stored in database, administrator can be easy to view code data.
Password transmits in clear text manner substantially in transmission process, anyone can distort intercepted data, without being sent out
It is existing.The management of password is not classified, after the password in system obtains one, you can obtain all permissions.
Invention content
Present invention seek to address that defect in the prior art, using a kind of Novel measuring automated system key management
Equipment carries out secure encrypted transmission by way of key, and symmetric cryptographic algorithm with public key cryptosyst is combined, utilizes public key system
System is easy to the characteristic of encryption key distribution and the high efficiency of symmetric cryptographic algorithm.The hierarchical layered of key is carried out by key management system
Safety management.
In order to realize one of above-mentioned purpose of design, technical scheme of the present invention, propose a kind of key management apparatus, have three
Grade key management system, can carry out the key involved in application system unified, safe management.System uses three layer frames
Structure, i.e., it is and next to be passed in the form of cipher machine, in a manner of encipherment protection as the secondary master key needed for higher level generates next stage
Grade.
In order to realize above-mentioned purpose of design, the two of technical scheme of the present invention, it is proposed based on aforementioned management equipment a kind of close
Key management method, it is ensured that the safety of data message is sent, to prevent distorting and obtaining for unauthorized.
The designing scheme one of the present invention：A kind of key management apparatus of metering automation system, including mutually communicating connection
Level key management hardware group, the continuous data access system of further one outside of connection of the level key management hardware group
System wherein the level key management hardware group includes N number of level key management hardware, designs N number of level key management
Hardware is so that its etc. passes sequentially through data network and communicated connection.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, N-1 levels
Key management hardware includes at least encryption equipment N-1, Key Management server N-1 and client PC machine N-1.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, setting encryption
Machine N-1 is to receive the encrypted access session key group from last layer grade.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, client is set
PC machine N-1 is held to generate digital signature.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, client is set
PC machine N-1 is held further to generate discrete element N-1 and be back to encryption equipment N-1；
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, key is set
Management server N-1 is to connect the encryption equipment N-1 and client PC machine N-1, by the encrypted access session key group and number
Word signature is coupled or is generated random number L_N-1.
A kind of key management apparatus according to aforementioned metering automation system, the level key including mutually communicating connection
Hardware group is managed, the level key management hardware group further connects the continuous data access system of an outside, wherein institute
It states level key management hardware group and includes three level key management hardware：I grades of key management hardware, II grades of key management hardware
And III level key management hardware, design the I grades of key management hardware, II grades of key management hardware and III level key management
Hardware so that its etc. passes sequentially through data network and is communicated connection, wherein：
Pass through the data information of I grades of key management hardware acceptance external metrology data access arrangements；
By I grades of key management hardware access session key group is sent to II grades of key management hardware；
By II grades of key management hardware access session key group is sent to III level key management hardware.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, described I grades close
Key management hardware includes encryption equipment I, Key Management server I and client PC machine I, and wherein encryption equipment I is taken by key management
Business device I is connected to client PC machine I.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, key is designed
Management server I is to receive and read the digital signature from client PC machine I.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, key is designed
Management server I is to obtain the access session key group of encryption equipment I.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, key is designed
Management server I gives client PC machine I to return to an access session key.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, key is designed
Management server I gives client PC machine I to return to a random number L_1.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, client is set
PC machine I is held to generate discrete element I and be back to encryption equipment I.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, setting encryption
Machine I is to generate second-level access session key group.
It is II grades described in the preferred embodiment of the key management apparatus of metering automation system of the present invention according to aforementioned
Key management hardware includes encryption equipment II, Key Management server II and client PC machine II, wherein encryption equipment II pass through key
Management server II is connected to client PC machine II.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, feature exists
In：Encryption equipment II is designed to receive the second-level access session key group or generation three-level access session key group.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, the encryption
Machine II is further provided with the storage device for storing the second-level access session key group.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, key is designed
Management server II is to receive and read the digital signature from client PC machine II.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, key is designed
Management server II is to obtain the access session key group of encryption equipment II.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, key is designed
Management server II gives client PC machine II to return to an access session key.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, key is designed
Management server II gives client PC machine II to return to a random number L_2.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, client is set
PC machine II is held to generate discrete element II and be back to encryption equipment II.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, design encryption
Machine II is to generate three-level access session key group.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, the III level
Key management hardware includes encryption equipment III, Key Management server III and client PC machine III, and wherein encryption equipment III passes through
Key Management server III is connected to client PC machine III.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, design encryption
Machine III is to receive the second-level access session key group.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, the encryption
Machine III is further provided with the storage device for storing the three-level access session key group.
The designing scheme two of the present invention：A kind of key management method of metering automation system, the system comprises bases
Aforementioned key management apparatus, including：
1）Digital signature is sent to Key Management server N-1 by client PC machine N-1；
2）The digital signature is identified, and access encryption equipment N-1 to obtain N-1 grades of visits by Key Management server N-1
Ask session key group；
3）Key Management server N-1 returns to signed N-1 grades access session key group and a random number L_N-1 extremely
Client PC machine N-1；
4）Discrete element N- is generated according to N-1 grades of access session key groups and random number L_N-1 by client PC machine N-1
1, return to encryption equipment N-1；
5）N grades of access meetings are generated according to the N-1 grades of access session key group and discrete element N-1 by encryption equipment N-1
Key group is talked about, client PC machine N-1 is back to after being encrypted by a session key；
6）Encrypted N-1 grades of access session key group is sent to by n-th layer grade key management by client PC machine N-1
The encryption equipment N of hardware；
7）Encrypted N grades of access session key group is decrypted and stored by the encryption equipment N.
According to aforementioned, in a preferred embodiment of the invention, the encryption equipment N is further provided with storing the N
The storage device of grade access session key group.
Present application addresses the key management security problems in metering automation system, realize the generation of key, backup, divide
Hair, the lifecycle management for transmitting, deleting and destroying.Key transmission process all by dispersion, externally it is invisible.Using
Three-tier architecture that is, as the secondary master key needed for higher level generates next stage, and is transmitted by the form of cipher machine, in a manner of encipherment protection
To next stage.
Description of the drawings
The preferred embodiment of the present invention will be described in detail in the form of with reference to attached drawing, wherein
Fig. 1 is the structure principle chart of the key management apparatus in metering automation system of the present invention.
Specific embodiment
Embodiment one：
A kind of key management apparatus of metering automation system, the level key management hardware including mutually communicating connection
Group, the level key management hardware group further connects the continuous data access system of an outside, wherein the level is close
Key management hardware group includes N number of level key management hardware, designs N number of level key management hardware so that its grade is led to successively
It crosses data network and is communicated connection.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, N-1 levels
Key management hardware includes at least encryption equipment N-1, Key Management server N-1 and client PC machine N-1.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, setting encryption
Machine N-1 is to receive the encrypted access session key group from last layer grade.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, client is set
PC machine N-1 is held to generate digital signature.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, client is set
PC machine N-1 is held further to generate discrete element N-1 and be back to encryption equipment N-1；
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, key is set
Management server N-1 is to connect the encryption equipment N-1 and client PC machine N-1, by the encrypted access session key group and number
Word signature is coupled or is generated random number L_N-1.
A kind of key management apparatus according to aforementioned metering automation system, the level key including mutually communicating connection
Hardware group is managed, the level key management hardware group further connects the continuous data access system of an outside, wherein institute
It states level key management hardware group and includes three level key management hardware：I grades of key management hardware 10, II grades of key managements are hard
Part 20 and III level key management hardware 30 design the I grades of key management hardware 10, II grades of key management hardware 20 and III
Grade key management hardware 30 so that its etc. passes sequentially through data network and is communicated connection, wherein：
The data information of external metrology data access arrangement is received by I grades of key management hardware 10；
By I grades of key management hardware 10 access session key group is sent to II grades of key management hardware 20；
By II grades of key management hardware 20 access session key group is sent to III level key management hardware 30.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, described I grades close
Key management hardware 10 includes encryption equipment I, Key Management server I and client PC machine I, wherein encryption equipment I pass through key management
Server I is connected to client PC machine I.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, key is designed
Management server I is to receive and read the digital signature from client PC machine I.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, key is designed
Management server I is to obtain the access session key group of encryption equipment I.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, key is designed
Management server I gives client PC machine I to return to an access session key.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, key is designed
Management server I gives client PC machine I to return to a random number L_1.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, client is set
PC machine I is held to generate discrete element I and be back to encryption equipment I.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, setting encryption
Machine I is to generate second-level access session key group.
It is II grades described in the preferred embodiment of the key management apparatus of metering automation system of the present invention according to aforementioned
Key management hardware 20 includes encryption equipment II, Key Management server II and client PC machine II, and wherein encryption equipment II passes through close
Key management server II is connected to client PC machine II.
It is characterized in that：Design encryption equipment II is accessed with receiving the second-level access session key group or generation three-level
Session key group.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, the encryption
Machine II is further provided with the storage device for storing the second-level access session key group.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, key is designed
Management server II is to receive and read the digital signature from client PC machine II.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, key is designed
Management server II is to obtain the access session key group of encryption equipment II.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, key is designed
Management server II gives client PC machine II to return to an access session key.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, key is designed
Management server II gives client PC machine II to return to a random number L_2.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, client is set
PC machine II is held to generate discrete element II and be back to encryption equipment II.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, design encryption
Machine II is to generate three-level access session key group.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, the III level
Key management hardware 30 includes encryption equipment III, Key Management server III and client PC machine III, and wherein encryption equipment III leads to
It crosses Key Management server III and is connected to client PC machine III.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, design encryption
Machine III is to receive the second-level access session key group.
According to aforementioned, in the preferred embodiment of the key management apparatus of metering automation system of the present invention, the encryption
Machine III is further provided with the storage device for storing the three-level access session key group.
Embodiment two：
A kind of key management method of metering automation system, the system comprises according to aforementioned key management apparatus,
It includes：
1）Digital signature is sent to Key Management server N-1 by client PC machine N-1；
2）The digital signature is identified, and access encryption equipment N-1 to obtain N-1 grades of visits by Key Management server N-1
Ask session key group；
3）Key Management server N-1 returns to signed N-1 grades access session key group and a random number L_N-1 extremely
Client PC machine N-1；
4）Discrete element N- is generated according to N-1 grades of access session key groups and random number L_N-1 by client PC machine N-1
1, return to encryption equipment N-1；
5）N grades of access meetings are generated according to the N-1 grades of access session key group and discrete element N-1 by encryption equipment N-1
Key group is talked about, client PC machine N-1 is back to after being encrypted by a session key；
6）Encrypted N-1 grades of access session key group is sent to by n-th layer grade key management by client PC machine N-1
The encryption equipment N of hardware；
7）Encrypted N grades of access session key group is decrypted and stored by the encryption equipment N.
According to aforementioned, in a preferred embodiment of the invention, the encryption equipment N is further provided with storing the N
The storage device of grade access session key group.
It these are only the preferred embodiment of the present invention, be not the limitation to technical solution of the present invention.It is to be appreciated that one
Technology modification, replacement or the combination made based on the present invention are cut, should all be covered by the technology that appended claims of the present invention are advocated
In scope.
Claims (3)
1. a kind of key management apparatus of metering automation system, the level key management hardware group including mutually communicating connection,
The level key management hardware group further connects the continuous data access system of an outside, it is characterised in that：The layer
Grade key management hardware group includes N number of level key management hardware, design N number of level key management hardware so that its successively
Connection is communicated by data network, N-1 level key managements hardware includes at least encryption equipment N-1, cipher key management services
Device N-1 and client PC machine N-1, wherein, encryption equipment N-1 is set to receive the encrypted access session key from last layer grade
Group；Client PC machine N-1 is set to generate digital signature or generation discrete element N-1 and be back to encryption equipment N-I；Setting
Key Management server N-1 is to connect the encryption equipment N-1 and client PC machine N-1, by the encrypted access session key group
Random number L_N-1 is coupled or generated with digital signature；Wherein, key management includes the following steps：
1）Digital signature is sent to Key Management server N-1 by client PC machine N-1；
2）The digital signature is identified by Key Management server N-1, and accesses encryption equipment N-1 to obtain N-1 grades of access meetings
Talk about key group；
3）Key Management server N-1 returns to signed N-1 grades access session key group and a random number L_N-1 to client
Hold PC machine N-1；
4）Discrete element N-1 is generated according to N-1 grades of access session key groups and random number L_N-1 by client PC machine N-1, is returned
Back to encryption equipment N-1；
5）It is close according to the N-1 grades of access session key group and discrete element N-1 N grades of access sessions of generation by encryption equipment N-1
Key group is back to client PC machine N-1 after being encrypted by a session key；
6）Encrypted N-1 grades of access session key group is sent to by n-th layer grade key management hardware by client PC machine N-1
Encryption equipment N, the encryption equipment N be further provided with the storage device for storing the N grades of access session key group；
7）Encrypted N grades of access session key group is decrypted and stored by the encryption equipment N.
2. a kind of key management apparatus of metering automation system according to claim 1, including mutually communicating connection
Level key management hardware group, the level key management hardware group further connect the continuous data access system of an outside
System, it is characterised in that：The level key management hardware group includes three level key management hardware：I grades of key management hardware
（10）, II grades of key management hardware（20）And III level key management hardware（30）, design the I grades of key management hardware
（10）, II grades of key management hardware（20）With III level key management hardware（30）Led to so that it passes sequentially through data network
News connection, wherein：Pass through I grades of key management hardware（10）Receive the data information of external metrology data access arrangement；Pass through I grades
Key management hardware（10）To II grades of key management hardware（20）Send access session key group；Pass through II grades of key management hardware
（20）To III level key management hardware（30）Send access session key group.
3. the key management apparatus of metering automation system according to claim 2, it is characterised in that：The I grades of key
Manage hardware（10）Pass through key management including encryption equipment I, Key Management server I and client PC machine I, wherein encryption equipment I
Server I is connected to client PC machine I, designs Key Management server I to receive and read the number from client PC machine I
Signature either obtain the access session key group of encryption equipment I or return an access session key to client PC machine I or
Person returns to a random number L_1 and gives client PC machine I, and client PC machine I is set to generate discrete element I and be back to encryption equipment
I sets encryption equipment I to generate second-level access session key group；
The II grades of key management hardware（20）Including encryption equipment II, Key Management server II and client PC machine II, wherein
Encryption equipment II is connected to client PC machine II by Key Management server II, designs encryption equipment II to receive the second-level access
Session key group or generation three-level access session key group, the encryption equipment II are further provided with storing described two
The storage device of grade access session key group designs Key Management server II to receive and read from client PC machine II
Digital signature either obtain encryption equipment II access session key group or return an access session key to client
PC machine II or return one random number L_2 give client PC machine II, and client PC machine II is set to generate discrete element II simultaneously
Encryption equipment II is back to, designs encryption equipment II to generate three-level access session key group；
The III level key management hardware（30）Including encryption equipment III, Key Management server III and client PC machine III,
Wherein encryption equipment III is connected to client PC machine III by Key Management server III, and design encryption equipment III is described to receive
Second-level access session key group, the encryption equipment III are further provided with storing the three-level access session key group
Storage device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310009523.8A CN103929303B (en) | 2013-01-11 | 2013-01-11 | A kind of key management apparatus of metering automation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310009523.8A CN103929303B (en) | 2013-01-11 | 2013-01-11 | A kind of key management apparatus of metering automation system |
Publications (2)
| Publication Number | Publication Date |
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| CN103929303A CN103929303A (en) | 2014-07-16 |
| CN103929303B true CN103929303B (en) | 2018-06-26 |
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| CN201310009523.8A Active CN103929303B (en) | 2013-01-11 | 2013-01-11 | A kind of key management apparatus of metering automation system |
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| CN1527532A (en) * | 2003-03-07 | 2004-09-08 | 江门市亿业科技有限公司 | Cipher key creating and distributing method and the computer network system therewith |
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| CN101738516A (en) * | 2008-11-25 | 2010-06-16 | 深圳市宝利达实业有限公司 | Electronic electric energy meter and data secure transmission method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7739501B2 (en) * | 2004-07-29 | 2010-06-15 | Infoassure, Inc. | Cryptographic key construct |
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2013
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| CN1527532A (en) * | 2003-03-07 | 2004-09-08 | 江门市亿业科技有限公司 | Cipher key creating and distributing method and the computer network system therewith |
| CN101166088A (en) * | 2007-09-27 | 2008-04-23 | 航天信息股份有限公司 | Encryption and decryption method based on user identity identifier |
| CN101738516A (en) * | 2008-11-25 | 2010-06-16 | 深圳市宝利达实业有限公司 | Electronic electric energy meter and data secure transmission method thereof |
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| CN103929303A (en) | 2014-07-16 |
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| CB02 | Change of applicant information |
Address after: HOLLEY Technology Park No. 181 310023 Hangzhou city Zhejiang District of Yuhang province Wuchang Avenue Applicant after: Holley Technology Ltd. Address before: HOLLEY Technology Park No. 181 310023 Hangzhou city Zhejiang District of Yuhang province Wuchang Avenue Applicant before: Holley Metering Ltd. |
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Inventor after: Rao Huipan Inventor after: Song Xiqiang Inventor after: Yao Niancheng Inventor before: Rao Xuanpan Inventor before: Song Xiqiang Inventor before: Yao Niancheng |