CN105827304B - Satellite network anonymous authentication method based on gateway station - Google Patents
Satellite network anonymous authentication method based on gateway station Download PDFInfo
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- CN105827304B CN105827304B CN201610162478.3A CN201610162478A CN105827304B CN 105827304 B CN105827304 B CN 105827304B CN 201610162478 A CN201610162478 A CN 201610162478A CN 105827304 B CN105827304 B CN 105827304B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
- H04B7/18593—Arrangements for preventing unauthorised access or for providing user protection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18565—Arrangements for preventing unauthorised access or for providing user protection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/06—Authentication
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- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
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Abstract
The present invention provides a kind of satellite network anonymous authentication method based on gateway station, traditional satellite network authentication method all uses network control center NCC to carry out authorization identifying to user, in order to reduce the authentication calculations amount of network control center NCC, authorization identifying function is transferred to gateway station G by the present invention, alleviate the burden of network control center NCC, the present invention uses message authentication code MAC in verification process, realize the anonymous authentication of user, protect the privacy of user, the present invention is after realizing satellite network to the safety certification of user, complete safety certification of the user to satellite network, two-way authentication is achieved the purpose that, further increase the safety of network.The authentication method of the present invention is broadly divided into two stages, i.e. registration phase and authentication phase.
Description
Technical field
The present invention relates to a kind of satellite network anonymous authentication method based on gateway station realizes the double of user and satellite network
To certification, the safety of network is further increased, technical field of satellite communication is belonged to.
Background technology
Due to the opening of satellite network channel, the safety issue of satellite network can not be ignored, especially military and
Safety problem is most important in business application.Although communication technology of satellite is relatively ripe, security protection therein
Technology is still in theory study and experimental stage, it is still desirable to carry out a large amount of research work.How believable satellite network is built
How network realizes secret communication, how to confirm the identity information of business participant, these safety problems are us in structure satellite
It must take into consideration and solve when network.
User can access system and obtain service by the certification of satellite communication system.If system is not taken more high-strength
The authentication mechanism of degree, disabled user can be accessed by protocol attack, to illegally obtain service or destroy system, so
Realize the two-way authentication between user terminal and satellite communication system, it is ensured that information comes from validated user, can be effectively prevented from and attack
The person of hitting implements to cheat by palming off terminal and satellite.
Invention content
The present invention proposes a kind of satellite network anonymous authentication method based on gateway station, traditional satellite network authentication method
All the network control center (Network Control Center, NCC) is used to carry out authorization identifying to user, in order to reduce NCC
Authentication calculations amount, authorization identifying function is transferred to gateway station (Gateway, G)；The present invention uses in verification process to disappear
Authentication code (Message Authentication Code, MAC) is ceased, the anonymous authentication of user is realized, protects that user's is hidden
It is private；The present invention completes certification of the user to satellite, has reached two-way authentication while realizing satellite to user safety authentication
Purpose further increases the safety of network.
Satellite network anonymous authentication method provided by the invention based on gateway station, the base of conventional satellite method for network authorization
On plinth, authorization identifying function is transferred to gateway station, the authentication calculations amount of network control center NCC is greatly reduced, in certification
Message authentication code is used in the process, realizes the anonymous authentication of user, protects the privacy of user；The present invention is realizing satellite
While to user safety authentication, certification of the user to satellite is completed, has achieved the purpose that two-way authentication, is a kind of safe and effective
Authentication method, authentication method of the invention is broadly divided into two stages, i.e. registration phase and authentication phase.
Registration phase：
User U sends the identification number ID of oneselfUGive network control center NCC, network control center's NCC computation keys
Key=h (IDU| | the m) key as user U, and provide a temporary identity TID for user UU, finally calculate login keyWherein, m is the permanent private keys of network control center NCC；After registration is completed, user U is preserved
Information be [IDU, TIDU, key], registration gateway station preserves a proof list { TIDU, V } and network control center NCC private key m,
Network control center NCC preserves information [TIDU, IDU, IDG’, IDSAT], wherein IDG’And IDSATRegistration gateway station G ' is indicated respectively
With the identification number of satellite SAT；
Authentication phase：
Step 1：User U generates session key sk=h (key, TIDU) and message authentication code macu=MACkey(IDU, sk),
And send message [TIDU, macu] and give access satellite；
Step 2：After satellite SAT receives the message that user U is sent, the identification number ID of oneself is addedSAT, send message
[TIDU, macu, IDSAT] give gateway station G；
Step 3：After gateway station G receives the message that satellite SAT is sent, satellite number ID is first checked forSATIt is whether legal, such as
Fruit is legal, and gateway station G passes through TIDUThe identity information that user U is checked in proof list, if finding corresponding user information,
It is then transferred to step 6, otherwise gateway station G sends message [ID by safe laneG, TIDU] give network control center NCC, wherein IDG
For the identification number of gateway station G；
Step 4：Network control center NCC is in the message [ID for receiving gateway station G and sendingG, TIDU] after, pass through TIDUIt searches
User's registration information [TIDU, IDU, IDG’, IDSAT], the registration gateway station G ' of user U is searched, if network control center NCC does not have
Respective user information is found, then notifies that this user of gateway station G is disabled user, authentification failure；Otherwise, the ID by findingG’
Corresponding registration gateway station G ' is found, and TID is found in the proof list of registration gateway station G 'UCorresponding login key V, so
Gateway station G will be transferred to for the login key V of certification user by safe lane afterwards；
Step 5：After gateway station receives the message that the relative users that network control center NCC is sent are disabled user, letter
Pass this message of station G is sent to respective satellite and user, and certification terminates；Otherwise, gateway station G is received passes through peace by registration gateway station G '
User authentication message { the TID that all channel is sentU, V }, and this message is preserved；
Step 6：Gateway station G utilizes the TID receivedUCalculate h (TIDU, m), then calculate It obtains
IDU', calculate separately key key '=h (IDU', m), session key sk '=h (key ', TIDU), message authentication code macu '=
MACkey(IDU', sk '), it checks whether the macu ' being calculated and the macu received are equal, if equal, completes pair
The authentication of user, and session key determines, otherwise authentification failure；
If certification success, gateway station G first notifies network control center NCC authenticating user identification successes, NCC to generate
One new temporary identity code T IDUnewReplace original TIDU, and by TIDUnewIt is sent to gateway station G, gateway station receives it
Afterwards, the TIDU in proof list is replaced with into TIDUnew.And calculate access session codeAnd macG=
MACsk’(TIDUnew), then send message [c, macG, IDSAT] give access satellite；
Step 7：Satellite is by macGIt is transmitted to user U with c, after user U is received, calculates authentication registration code macG'=
MACsk’(TIDUnew'), whereinCompare the mac being calculatedG' and connect
The mac receivedGIt is whether equal, if equal, the success of this access authentication, and next certification TIDUnewIt is authenticated.
The invention has the advantages that：Traditional satellite network authentication method all authorizes user using NCC
Certification, the satellite network anonymous authentication method based on gateway station provided by the invention applied to satellite network, by authorization identifying
Function is transferred to gateway station, greatly reduces the authentication calculations amount of network control center NCC, and the present invention uses in verification process
Message authentication code, realizes the anonymous authentication of user, and the privacy of user, the present invention is protected to realize satellite to user security
While certification, certification of the user to satellite is completed, has achieved the purpose that two-way authentication, has further increased the safety of network.
Description of the drawings
Fig. 1 is satellite communication network architecture；
Fig. 2 is the registration phase of authentication method provided by the invention；
Fig. 3 is the authentication phase of authentication method provided by the invention.
Specific implementation mode
As shown in Figure 1, the link that the satellite communication network architecture that the present invention uses is related to has：Inter-satellite link, user
Link, feeder link and escape way.
The mark meaning that the present invention uses is：U：Terminal user, SAT：Satellite, G：Gateway station, G '：Registration gateway station,
NCC：The network control center.
Message authentication code (MAC)：In cryptography, a kind of authentication mechanism that communication entity both sides use ensures message count
According to a kind of tool of integrality, the hash functions with secret key can also be referred to as.Message authentication code is plucked based on key and message
An obtained value is wanted, data source hair certification and completeness check are can be used for.
Satellite network anonymous authentication method provided by the invention based on gateway station mainly has two stages of registration and certification,
Main flow is as follows：
Registration phase, as shown in Figure 2：
User U is before using network, it is necessary first to go to register to network control center NCC, and be distributed for it by NCC
User information, it is assumed that NCC is gathered around there are one permanent private key m.User U sends the ID of oneself firstUTo NCC, NCC computation keys
Key=h (IDU| | the m) key as user U, and provide a temporary identity TID for user UU, finally calculateAfter registration is completed, the information that user U is preserved is [IDU, TIDU, key], registration gateway station preserves
One proof list { TIDU, V } and NCC private keys m, NCC preservation information [TIDU, IDU, IDG’, IDSAT], wherein IDG’And IDSATRespectively
Indicate the identification number of registration gateway station G ' and satellite SAT.
Authentication phase, as shown in Figure 3：
Step 1：User U generates session key sk=h (key, TIDU) and message authentication code macu=MACkey(IDU, sk),
And send message [TIDU, macu] and give access satellite.
Step 2：After satellite SAT receives the message that user U is sent, the identification number ID of oneself is addedSAT, send message
[TIDU, macu, IDSAT] give gateway station G.
Step 3：After gateway station G receives the message that satellite SAT is sent, satellite number ID is first checked forSATIt is whether legal, such as
Fruit is legal, and gateway station G passes through TIDUThe identity information that user U is checked in proof list, if finding corresponding user information,
It is then transferred to step 6, otherwise gateway station G sends message [ID by safe laneG, TIDU] give network control center NCC.
Step 4：NCC is in the message [ID for receiving gateway station G and sendingG, TIDU] after, pass through TIDUSearch user's registration information
[TIDU, IDU, IDG’, IDSAT], the registration gateway station G ' for searching user U is accused if NCC does not find respective user information
Know that this user of gateway station G is disabled user, authentification failure.Otherwise, the ID by findingG’Corresponding registration gateway station G ' is found,
And find TID in the proof list of G 'UCorresponding login key V, then will be for the note of certification user by safe lane
Volume key V is transferred to gateway station G.
Step 5：It, will if gateway station G receives network control center NCC and sends the message that associated user is disabled user
This message is sent to respective satellite and user, and certification terminates.Otherwise, gateway station G is received by registration gateway station G ' by believing safely
User authentication message { the TID that road is sentU, V }, and this message is preserved.
Step 6：Gateway station G utilizes the TID receivedUCalculate h (TIDU, m), then calculate It obtains
IDU', calculate separately key key '=h (IDU', m), session key sk '=h (key ', TIDU), message authentication code macu '=
MACkey(IDU', sk '), it checks whether the macu ' being calculated and the macu received are equal, if equal, completes pair
The authentication of user, and session key is it was determined that otherwise authentification failure.If certification success, gateway station G are first notified
Network control center NCC authenticating user identification successes, NCC generate a new temporary identity code T IDUnewIt replaces originally
TIDU, and TIDUnewIt will be sent to gateway station G, after gateway station receives, the TIDU in proof list is also replaced with into TIDUnew.And
It calculatesAnd macG=MACsk’(TIDUnew), then send message [c, macG, IDSAT] to access
Satellite.
Step 7：Satellite is by macGIt is transmitted to user U with c, after user U is received, is calculated
Obtain TIDUnew' and according to TIDUnew' mac is calculatedG'=MACsk’(TIDUnew'), compare the mac being calculatedG' and connect
The mac receivedGIt is whether equal, if equal, the success of this access authentication, and next certification TIDUnewIt is authenticated.
Claims (2)
1. a kind of satellite network anonymous authentication method based on gateway station, it is characterised in that：Including registration phase and authentication phase；
Registration phase：
User U sends the identification number ID of oneselfUGive network control center NCC, network control center NCC computation keys key=h
(IDU| | the m) key as user U, and provide a temporary identity TID for user UU, finally calculate login keyWherein, m is the permanent private keys of network control center NCC；After registration is completed, user U is preserved
Information be [IDU, TIDU, key], registration gateway station preserves a proof list { TIDU, V } and network control center NCC private key m,
Network control center NCC preserves information [TIDU, IDU, IDG’, IDSAT], wherein IDG’And IDSATRegistration gateway station G ' is indicated respectively
With the identification number of satellite SAT；
Authentication phase：
Step 1：User U generates session key sk=h (key, TIDU) and message authentication code macu=MACkey(IDU, sk), concurrently
Send message [TIDU, macu] and give access satellite；
Step 2：After satellite SAT receives the message that user U is sent, the identification number ID of oneself is addedSAT, send message [TIDU,
Macu, IDSAT] give gateway station G；
Step 3：After gateway station G receives the message that satellite SAT is sent, satellite number ID is first checked forSATIt is whether legal, if closed
Method, gateway station G pass through TIDUCheck that the identity information of user U turns if finding corresponding user information in proof list
Enter step 6, otherwise gateway station G sends message [ID by safe laneG, TIDU] give network control center NCC, wherein IDGFor letter
Close the identification number of station G；
Step 4：Network control center NCC is in the message [ID for receiving gateway station G and sendingG, TIDU] after, pass through TIDUSearch user
Log-on message [TIDU, IDU, IDG’, IDSAT], the registration gateway station G ' of user U is searched, if network control center NCC is not looked for
To respective user information, then notify that this user of gateway station G is disabled user, authentification failure；Otherwise, the ID by findingG’It finds
Corresponding registration gateway station G ', and find TID in the proof list of registration gateway station G 'UCorresponding login key V, then leads to
Gateway station G will be transferred to for the login key V of certification user by crossing safe lane；
Step 5：Gateway station G receives the user authentication message { TID sent by safe lane by registration gateway station G 'U, V }, and
This message is preserved；
Step 6：Gateway station G utilizes the TID receivedUCalculate h (TIDU, m), then calculate Obtain IDU',
Calculate separately key key '=h (IDU', m), session key sk '=h (key ', TIDU), message authentication code macu '=MACkey
(IDU', sk '), check whether the macu ' being calculated and the macu received are equal, if equal, complete to user
Authentication, and session key determines, otherwise authentification failure；
If certification success, gateway station G first notifies network control center NCC authenticating user identification successes, NCC to generate one
New temporary identity code T IDUnewReplace original TIDU, and by TIDUnewIt is sent to gateway station G, after gateway station receives,
TIDU in proof list is replaced with into TIDUnew, and calculate access session codeAnd macG=MACsk’
(TIDUnew), then send message [c, macG, IDSAT] give access satellite；
Step 7：Satellite is by macGIt is transmitted to user U with c, after user U is received, calculates authentication registration code macG'=MACsk’
(TIDUnew'), whereinCompare the mac being calculatedG' and receive
macGIt is whether equal, if equal, the success of this access authentication, and next certification TIDUnewIt is authenticated.
2. the satellite network anonymous authentication method based on gateway station as described in claim 1, it is characterised in that：The step 4
In, network control center NCC notifies gateway station G relative users for after disabled user, this message of gateway station G is sent to respective satellite
And user, certification terminate.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106850674B (en) * | 2016-12-02 | 2019-07-16 | 中国电子科技集团公司第三十研究所 | A kind of satellite in orbit identity identifying method |
| CN108055663B (en) * | 2017-12-08 | 2020-08-28 | 北京理工大学 | Lightweight low-orbit constellation networking authentication and group key negotiation method |
| CN108282778B (en) * | 2018-01-23 | 2020-05-12 | 中国科学技术大学 | Anonymous and rapid roaming access authentication method in space network |
| CN108282779B (en) * | 2018-01-24 | 2020-05-12 | 中国科学技术大学 | Space-ground integrated space information network low-delay anonymous access authentication method |
| CN109039436B (en) * | 2018-10-23 | 2020-09-15 | 中国科学院信息工程研究所 | Method and system for satellite security access authentication |
| CN111431586B (en) * | 2020-04-17 | 2021-09-21 | 中国电子科技集团公司第三十八研究所 | Satellite network safety communication method |
| CN112968765B (en) * | 2020-12-18 | 2022-07-22 | 江苏省未来网络创新研究院 | Parameter initialization registration process method of spatial information network based on block chain |
| CN112564775B (en) * | 2020-12-18 | 2023-04-07 | 江苏省未来网络创新研究院 | Spatial information network access control system and authentication method based on block chain |
| CN112615721B (en) * | 2020-12-18 | 2022-12-06 | 江苏省未来网络创新研究院 | Access authentication and authority management control flow method of spatial information network based on block chain |
| CN114760030A (en) * | 2020-12-26 | 2022-07-15 | 西安西电捷通无线网络通信股份有限公司 | Identity authentication method and device |
| CN113472778B (en) * | 2021-06-30 | 2023-04-07 | 中国人民解放军国防科技大学 | Information network safety protection trust system and method |
| CN113783703B (en) * | 2021-11-10 | 2022-02-25 | 清华大学 | Satellite network terminal security access authentication method, device and system |
| CN114172669B (en) * | 2022-02-15 | 2022-05-03 | 之江实验室 | Two-stage security access authentication method fusing space-time characteristics in satellite-ground communication |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101945387A (en) * | 2010-09-17 | 2011-01-12 | 中兴通讯股份有限公司 | Method and system of binding access layer secret key and device |
| CN102761868A (en) * | 2012-04-28 | 2012-10-31 | 黄林果 | Security access authentication method under space network condition |
| CN103780394A (en) * | 2014-01-23 | 2014-05-07 | 北京邮电大学 | Access authentication and certification scheme applicable to satellite DCS |
| CN104038937A (en) * | 2014-06-24 | 2014-09-10 | 中国科学院软件研究所 | Network access authentication method applicable to satellite mobile communication network |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9215244B2 (en) * | 2010-11-18 | 2015-12-15 | The Boeing Company | Context aware network security monitoring for threat detection |
| US20140229997A1 (en) * | 2013-02-08 | 2014-08-14 | Electronics And Telecommunications Research Institute | Satellite broadcasting and communication transmitting method and apparatus operable in broad signal to noise ratio (snr) environment |
-
2016
- 2016-03-21 CN CN201610162478.3A patent/CN105827304B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101945387A (en) * | 2010-09-17 | 2011-01-12 | 中兴通讯股份有限公司 | Method and system of binding access layer secret key and device |
| CN102761868A (en) * | 2012-04-28 | 2012-10-31 | 黄林果 | Security access authentication method under space network condition |
| CN103780394A (en) * | 2014-01-23 | 2014-05-07 | 北京邮电大学 | Access authentication and certification scheme applicable to satellite DCS |
| CN104038937A (en) * | 2014-06-24 | 2014-09-10 | 中国科学院软件研究所 | Network access authentication method applicable to satellite mobile communication network |
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Application publication date: 20160803 Assignee: NUPT INSTITUTE OF BIG DATA RESEARCH AT YANCHENG CO., LTD. Assignor: Nanjing Post & Telecommunication Univ. Contract record no.: X2019980001249 Denomination of invention: Gateway station-based satellite network anonymous authentication method Granted publication date: 20181109 License type: Common License Record date: 20191224 |
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