CN1852550A - Safety communication method - Google Patents
Safety communication method Download PDFInfo
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- CN1852550A CN1852550A CNA2005100708124A CN200510070812A CN1852550A CN 1852550 A CN1852550 A CN 1852550A CN A2005100708124 A CNA2005100708124 A CN A2005100708124A CN 200510070812 A CN200510070812 A CN 200510070812A CN 1852550 A CN1852550 A CN 1852550A
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Abstract
The method includes steps: through base station (BS) mobile switching center (MSC) sends seeking request to called user corresponding to international mobile user id (IMSI)/ electric sequence number (ESN); when receiving seeking response of called user forwarded by BS, MSC authenticates the called user; if authentication is passed, then service channel between BS and the called user is established. After MSC authentication is passed, if MSC receives seeking response from called user forwarded by BS again; then carrying out authentication again; if authentication is passed, then not carrying out process; if failed, then, the method considers that user of code device is existed currently, informing BS to disengage service channel of called user corresponding to IMSI/ESN, stopping communication. The invention solves issue of monitoring host as called party from code device so as to prevent code device from receiving short message sent from user to host.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of method of secure communication.
Background technology
According to present agreement regulation, in code division multiple access (CDMA) system, the international mobile subscriber identity of travelling carriage (IMSI), Electronic Serial Number (ESN) are globally unique.But in actual operation process, the uniqueness of IMSI and ESN is difficult to be guaranteed, and the IMSI that some disabled users often occur and ESN are identical with validated user, therefore, may cause validated user normally to communicate.Following the application is called validated user in " main frame ", will use the disabled user of identical IMSI with main frame and ESN to be called " ink recorder ".Such as: because an ink recorder just communicates, if this moment, main frame need make a call, because the cdma network side is for providing service with ink recorder that main frame has identical IMSI and an ESN, therefore, to refuse provides service for main frame, simultaneously, network side is thought this ink recorder ongoing communication, so if this moment, this main frame also can't be as called, the most serious is, because the IMSI of ink recorder and ESN and main frame is identical, so may monitor the Content of Communication of main frame, such as, voice and short message etc.Therefore, the user can't obtain the communication that safety guarantee is arranged.
In order to guarantee secure communication, the voice encryption technology in the CDMA agreement is to avoid the monitoring of ink recorder user to the host subscriber at present, but because this encryption technology realizes complexity, seldom uses in actual operation process.
At present extensively the mode that adopts is that the user is carried out global challenge when the connecting system, no longer carries out voice encryption after the conversation.
Fig. 1 ink recorder is to the called monitoring flow chart of main frame.Referring to shown in Figure 1, ink recorder is as follows to the called snoop procedure of main frame:
Step 101:MSC sends paging request (Paging Request) to the BS system, with paging MS.
After step 102～103:BS receives this beep-page message, on eating dishes without rice or wine, send beep-page message (Paging Message) to MS by paging channel.Here, because ink recorder user's IMSI is identical with main frame with ESN, so for the beep-page message on eating dishes without rice or wine, ink recorder and main frame can receive.
Step 106:MSC carries out authentication to this MS after receiving this Paging Response, if authentication is passed through, then issues assignment request (Assignment Request), execution in step 109 to BS.
After step 114～116:BS receives the MS response message, send out connection (Connect) message to MSC; Main frame begins to communicate.At this moment, because the IMSI of ink recorder is identical with main frame with ESN, ink recorder is monitored the host subscriber.
From said process as can be seen, BS sends the paging request to MS, so the IMSI of ink recorder and main frame is identical with ESN, so the both can receive this paging request, if after the main frame authentication is passed through, receive the page response of ink recorder again after, will abandon this beep-page message, not do any processing.This is because communication apparatus all is the mechanism that adopts the message status machine basically, and is invalid for receiving that the message that is not current wait then is considered as, discard processing.Therefore, this processing mode also is for the ink recorder user hidden danger have been buried in the monitoring of main frame.That is to say, during as called communicating, because the IMSI of ink recorder is identical with main frame with ESN, and is to adopt IMSI and ESN to carry out the sign indicating number branch on eating dishes without rice or wine at main frame, so the speech ink recorder for main frame can receive equally, therefore can listen to the Content of Communication of main frame.
Equally, ink recorder also can receive the short message of issuing main frame.Wherein, short message receives can be divided into dual mode again: a kind of is directly to issue from control (paging) channel, and another kind issues by Traffic Channel.It is basic identical that the ink recorder user can receive the principle and the top monitoring principle to speech of the short message of issuing the host subscriber.
Summary of the invention
In view of this, main purpose of the present invention provides a kind of method of secure communication, when main frame is communicated, avoids the monitoring of ink recorder to main frame.
To achieve these goals, the invention provides a kind of method of secure communication, this method is achieved in that
A. mobile switching centre sends the paging request by the base station to the called user terminal MS of User Identity correspondence;
B. after mobile switching centre receives that the page response of the called user terminal that comes is transmitted in each base station, called user terminal is carried out authentication at each page response;
After authentication success for the first time, the Traffic Channel between base station foundation and called user terminal, network side and called user terminal utilize this Traffic Channel to communicate;
After authentication success for the first time, if mobile switching centre receive once more the base station transmit come from the called user terminal page response, mobile switching centre carries out authentication once more to called user terminal, if authentication is passed through, then do not handle, if failed authentication, then dismantling call.
Voice mode is adopted in communication described in the step b, or short message way.
Further comprised before step a: the calling subscriber sends the paging request to mobile switching centre, wherein contains the User Identity of called user terminal.
Described User Identity is a Subscriber Number, or contains international mobile subscriber identity IMSI/ Electronic Serial Number ESN.
Between step a, further comprise:
A11, call subscriber terminal send the paging request to mobile switching centre, wherein contain the User Identity of called user terminal;
After this paging request is received by a12, mobile switching centre, execution in step a.
Before step a, further comprise:
A21, call subscriber terminal send SMS message to the short message service center of network side, wherein contain the User Identity of called user terminal;
After this short message is received by a22, short message service center, from the attaching position register of called user terminal, get access to the called user terminal current location information, and send the paging request to roaming mobile switching centre according to the called user terminal current location information;
After this paging request is received by a23, mobile switching centre, execution in step a.For fear of the monitoring of ink recorder to main frame, the page response of the present invention to receive at every turn all will carry out authentication.After the success of authentication, MSC receives page response once more, to carry out authentication once more, if this authentication success then can abandon this beep-page message, do not do other processing, if this failed authentication then thinks to have potential safety hazard by the current ink recorder that exists, MSC notice BS removes the current business channel, thereby has avoided the monitoring of ink recorder to main frame.Therefore, use method of the present invention and can solve ink recorder, avoid the ink recorder user to receive the short message of issuing main frame, guarantee telex network safety the called monitoring problem of main frame.
Description of drawings
Figure 1 shows that the schematic flow sheet that the prior art ink recorder is monitored main frame;
Fig. 2 is for realizing the schematic flow sheet of the inventive method;
Fig. 3 is for realizing the specific embodiment one flow process schematic diagram of the inventive method;
Fig. 4 is for realizing the specific embodiment two flow process schematic diagrames of the inventive method.
Embodiment
Main method of the present invention is: MSC sends the paging request by BS to the MS of IMSI/ESN correspondence; After MSC receives that BS transmits the page response of MS, this MS is carried out authentication, if authentication is passed through, then set up the Traffic Channel between BS and this MS, if failed authentication thinks that then the called subscriber is illegal user, MSC continues to wait for.After the MSC authentication is passed through, if MSC receives BS once more and transmits the page response of the MS that comes, to carry out authentication to the called subscriber once more, if authentication is passed through, then do not handle, if failed authentication is then thought the current ink recorder MS that exists, notice BS removes the Traffic Channel between the called subscriber corresponding with this IMSI/ESN, stops to communicate.
Referring to shown in Figure 2, realize that the concrete steps of the inventive method are as follows:
Step 201:MSC sends the paging request by BS to the MS of IMSI/ESN correspondence.
Step 202: the MS that receives this paging request sends page response by BS to MSC, wherein contains authentication parameter.
Step 203:MSC receives each page response, all will carry out authentication to the called subscriber according to the authentication parameter in the page response, and when the first time, authentication was successful, the called subscriber of notice BS and this IMSI/ESN set up Traffic Channel.
Step 204: after the authentication success first time, MSC receives the page response from MS once more, and MSC carries out authentication at this page response once more to MS, if the authentication success then abandons this message, do not do other processing, if failed authentication then notifies BS to remove the Traffic Channel of having set up.
After step 205:BS receives this notice, remove the Traffic Channel of the MS corresponding with this IMSI/ESN.
Above-mentioned steps 203 adopts existing general authentication mode to get final product, and not giving unnecessary details here is how to carry out authentication.Need to prove, though the IMSI/ESN of ink recorder is identical with main frame, because main frame is identical with shared secret data (SSD) in the network side authentication process, and the SSD of ink recorder and network side is inequality, therefore network side can be successful to the authentication of main frame, and the authentication of ink recorder is failed.
And, MSC by BS after the called subscriber sends the paging request, if MSC at first receives the page response of ink recorder, this moment is because that the SSD of ink recorder and network side are preserved is different, therefore MSC carries out failed authentication at this page response to the called subscriber, sends refuse information to the called subscriber, after ink recorder was received this message, after this refusal was set up Traffic Channel with BS.Next, if MSC receives the page response of the main frame that BS transmits, MSC is equally to its authentication, and after authentication was passed through, the Traffic Channel between BS foundation and the main frame can begin to communicate.Certainly, may exist a plurality of ink recorders or main frame to send repeatedly the situation of page response, so, after this may receive that still BS transmits the page response of the ink recorder that comes by MSC, equally need be at this page response, the called subscriber is carried out authentication, if authentication is passed through, then abandon current page response, do not do any processing, if failed authentication, then think and the current disabled user of existence monitor for preventing ink recorder, then MSC notice BS removes Traffic Channel, after BS receives this notice, the Traffic Channel between dismounting and the called subscriber.
Equally, if MSC has received the page response of main frame earlier, at after this page response authentication success, need set up Traffic Channel so, main frame begins to communicate by letter normally.And after MSC receives page response once more, also need carry out authentication to the called subscriber at this page response, if this moment, authentication was passed through, then abandon this page response, do not do any other processing, if failed authentication, then think and have the disabled user, then MSC notice BS removes Traffic Channel, after BS receives this notice, and the Traffic Channel between dismounting and the called subscriber.
And above-mentioned communication can comprise various ways, as: voice mode, short message way etc.
Fig. 3 is the specific embodiment in the voice communication mode.Referring to shown in Figure 3, present embodiment realizes that the detailed process of secure communication is as follows:
Step 300: call subscriber terminal sends the paging request to mobile switching centre, wherein contains the User Identity of called user terminal; After this paging request is received by mobile switching centre, execution in step 301.
Step 301:MSC sends paging request (Paging Request) to the BS system, with paging MS.
After step 302～303:BS receives this paging request, on eating dishes without rice or wine, send beep-page message (Paging Message) to MS by paging channel.Here, because ink recorder user's IMSI is identical with main frame with ESN, so for the beep-page message on eating dishes without rice or wine, ink recorder and main frame can receive.
Step 306:MSC carries out authentication to this user after receiving this Paging Response, if authentication is passed through, then issues assignment request (Assignment Request) to BS.BS finishes channel assignment after receiving this assignment request, and Traffic Channel is set up.This aft engine can be used as and calledly carries out voice communication by this Traffic Channel.
After step 309:MSC receives page-response message once more, once more this user is carried out authentication, if authentication is passed through, then ignore this message, if failed authentication, then thinking current has ink recorder to exist, and abandons this message, execution in step 310.
Fig. 4 is respectively with the specific embodiment of voice and two kinds of communication modes of short message.The processing of this mode and speech is similar, promptly when Paging Response this response message is carried out authentication.If receive Paging Response message the same second time,, then think the repeatedly response message of main frame if authentication is passed through; If failed authentication then thinks to have the ink recorder user to exist, remove the Traffic Channel of having built up, this short message issuing failure.
Referring to shown in Figure 4, present embodiment realizes that the detailed process of secure communication is as follows:
Step 400: call subscriber terminal sends SMS message to the short message service center of network side, wherein contains the User Identity of called user terminal; After this short message is received by short message service center, from the attaching position register of called user terminal, get access to the called user terminal current location information, and send the paging request to roaming mobile switching centre according to the called user terminal current location information; After this paging request is received by mobile switching centre, execution in step 401.
Step 401:MSC sends beep-page message to the BS system, with calling called subscriber MS.
After step 402～403:BS receives this beep-page message, on eating dishes without rice or wine, send beep-page message to called subscriber MS by paging channel.Here, because ink recorder user's IMSI is identical with main frame with ESN, so for the beep-page message on eating dishes without rice or wine, ink recorder and main frame can receive.
Step 404～405: main frame returns page-response message to BS; BS returns page-response message to MSC after receiving this page response, wherein contains user's authentication information.
After step 406:MSC receives this page-response message, this user is carried out authentication,, then issue assignment request message to BS if authentication is passed through.BS sets up Traffic Channel after receiving this domination message, calls out to connect and sets up.Network side utilizes this Traffic Channel to send SMS message to main frame.
Step 407～408: the page-response message when BS receives ink recorder sends this page-response message to MSC.
After step 409:MSC receives page-response message once more, once more this user is carried out authentication, if authentication is passed through, then ignore this message, if failed authentication, then thinking current has ink recorder to exist, and abandons this message, execution in step 410.
Step 410～412:MSC notice BS removes this main frame corresponding service channel, and BS sends release command to the called subscriber after receiving this notice.
Step 413～415: after main frame and ink recorder receive this release command, discharge Traffic Channel, and finish message to MSC transmission dismantling call by BS.
In addition, since in the prior art the short message receiving contracture be dual mode: a kind of is to utilize control channel directly to issue, and a kind of is to issue by Traffic Channel.If under the control channel short-message sending owing to there is not authentication process, so the sure short message of issuing main frame of receiving of ink recorder., need avoid issuing than higher user for security requirement, change the mode that issues from Traffic Channel into from control channel.But,,, then unrealistic if all users issue in this manner because the mode that issues from Traffic Channel need take more system resource.Therefore, in the reality operation, can be only open at a small amount of higher-level user.The mode that employing is contracted on HLR.On the C/D mouth, increase the channel mode that parameter: SMS_TerChnTyp indicates short message issuing.This parameter is as a content in the service item inventory, and upgrades in flow process, the qualification indication flow process in the position and to carry this parameter, applied for utilizing the service of short-message sending under the Traffic Channel so that user of current roaming MSC/VLR knows this MS.Wherein, the qualification indication comprises the qualification request that MSC/VLR initiatively initiates to the HLR of MS, also comprises the qualification indication that HLR initiatively sends to MSC/VLR.HLR upgrades in response or the qualification indication by qualification request response, position and carries the SMS_TerChnTyp parameter.Such as: ginseng is shown in Table 1, and when the value of SMS_TerChnTyp was " 0 ", expression is indication not; When the value of SMS_TerChnTyp is " 1 ", represent that all short messages (SMS) issue in Traffic Channel; When the value of SMS_TerChnTyp is " 2～255 ", can be used as reserved field.
| Field (Field) | Value (Value) | Type (Type) |
| Identifier (Identifier) | SMS_TerminationChannelType | Than choosing (M) | ||||||||
| Length (Length) | 1 byte (octet) | Than choosing (M) | ||||||||
| Content (Contents) | ||||||||||
| H | G | F | E | D | C | B | A | octet | ||
| SMS_TerChnTyp | 1 | |||||||||
Table 1
Like this, roaming MSC/VLR be under this MS during short-message sending, judges that this MS application receives the channel type of short message, if Traffic Channel, then MSC/VLR utilizes Traffic Channel short-message sending under MS of setting.And after this,, therefore just can utilize method of the present invention to carry out safety guarantee owing to adopted the mode of short-message sending under the Traffic Channel.
Claims (6)
1, a kind of method of secure communication is characterized in that, this method may further comprise the steps:
A. mobile switching centre sends the paging request by the base station to the called user terminal MS of User Identity correspondence;
B. after mobile switching centre receives that the page response of the called user terminal that comes is transmitted in each base station, called user terminal is carried out authentication at each page response;
After authentication success for the first time, the Traffic Channel between base station foundation and called user terminal, network side and called user terminal utilize this Traffic Channel to communicate;
After authentication success for the first time, if mobile switching centre receive once more the base station transmit come from the called user terminal page response, mobile switching centre carries out authentication once more to called user terminal, if authentication is passed through, then do not handle, if failed authentication, then dismantling call.
2, method according to claim 1 is characterized in that, voice mode is adopted in communication described in the step b, or short message way.
3, method according to claim 1 is characterized in that, further comprises before step a: the calling subscriber sends the paging request to mobile switching centre, wherein contains the User Identity of called user terminal.
According to the described method of claim 1～3, it is characterized in that 4, described User Identity is a Subscriber Number, or contain international mobile subscriber identity IMSI/ Electronic Serial Number ESN.
5, method according to claim 1 is characterized in that, further comprises between step a:
A11, call subscriber terminal send the paging request to mobile switching centre, wherein contain the User Identity of called user terminal;
After this paging request is received by a12, mobile switching centre, execution in step a.
6, method according to claim 1 is characterized in that, further comprises before step a:
A21, call subscriber terminal send SMS message to the short message service center of network side, wherein contain the User Identity of called user terminal;
After this short message is received by a22, short message service center, from the attaching position register of called user terminal, get access to the called user terminal current location information, and send the paging request to roaming mobile switching centre according to the called user terminal current location information;
After this paging request is received by a23, mobile switching centre, execution in step a.
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| CNB2005100708124A CN100433911C (en) | 2005-05-17 | 2005-05-17 | Safety communication method |
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| CNB2005100708124A CN100433911C (en) | 2005-05-17 | 2005-05-17 | Safety communication method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008106889A1 (en) * | 2007-03-05 | 2008-09-12 | Huawei Technologies Co., Ltd. | A method, wireless communication system and group mobility controller for processing group mobility |
| WO2008110096A1 (en) * | 2007-03-09 | 2008-09-18 | Huawei Technologies Co., Ltd. | Method and apparatus for examining mobile equipment |
| WO2012031393A1 (en) * | 2010-09-08 | 2012-03-15 | 中兴通讯股份有限公司 | Method and system for paging based on imsi |
| CN106209752A (en) * | 2015-05-08 | 2016-12-07 | 中兴通讯股份有限公司 | A kind of method and apparatus realizing secret communication |
| CN109429227A (en) * | 2017-06-20 | 2019-03-05 | 中国移动通信有限公司研究院 | A kind of signal processing method, device, equipment and computer readable storage medium |
| CN114025348A (en) * | 2020-07-15 | 2022-02-08 | 中国移动通信有限公司研究院 | Communication security protection method, device and computer readable storage medium |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5633914A (en) * | 1995-08-22 | 1997-05-27 | Rosa; Stephen P. | Method for foiling cellular telephone cloning |
| US5890075A (en) * | 1996-10-21 | 1999-03-30 | Lucent Technologies Inc. | Method for remotely updating data stored in a mobile terminal by a wireless telecommunications system |
| JPH11127468A (en) * | 1997-10-20 | 1999-05-11 | Fujitsu Ltd | Communication controller and radio communication system |
| KR100576910B1 (en) * | 2003-09-27 | 2006-05-03 | 엘지전자 주식회사 | Interception Method For Simultaneous Communication Of Illegality Reproduction Terminal In The Mobile Communication System |
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2005
- 2005-05-17 CN CNB2005100708124A patent/CN100433911C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008106889A1 (en) * | 2007-03-05 | 2008-09-12 | Huawei Technologies Co., Ltd. | A method, wireless communication system and group mobility controller for processing group mobility |
| CN101262692B (en) * | 2007-03-05 | 2011-04-20 | 华为技术有限公司 | A method and wireless communication system for processing group mobility |
| WO2008110096A1 (en) * | 2007-03-09 | 2008-09-18 | Huawei Technologies Co., Ltd. | Method and apparatus for examining mobile equipment |
| WO2012031393A1 (en) * | 2010-09-08 | 2012-03-15 | 中兴通讯股份有限公司 | Method and system for paging based on imsi |
| CN106209752A (en) * | 2015-05-08 | 2016-12-07 | 中兴通讯股份有限公司 | A kind of method and apparatus realizing secret communication |
| CN109429227A (en) * | 2017-06-20 | 2019-03-05 | 中国移动通信有限公司研究院 | A kind of signal processing method, device, equipment and computer readable storage medium |
| CN109429227B (en) * | 2017-06-20 | 2022-03-08 | 中国移动通信有限公司研究院 | Signal processing method, device, equipment and computer readable storage medium |
| CN114025348A (en) * | 2020-07-15 | 2022-02-08 | 中国移动通信有限公司研究院 | Communication security protection method, device and computer readable storage medium |
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