CN104010285A - Short message filtering method and system, short message service center and terminal - Google Patents
Short message filtering method and system, short message service center and terminal Download PDFInfo
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- CN104010285A CN104010285A CN201410273332.7A CN201410273332A CN104010285A CN 104010285 A CN104010285 A CN 104010285A CN 201410273332 A CN201410273332 A CN 201410273332A CN 104010285 A CN104010285 A CN 104010285A
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Abstract
The invention discloses a short message filtering method and system, a short message service center and a terminal. The method includes the steps that the short message service center generates the address information in a service center address field through a private short message center address; when the terminal receives a short message, whether the address information carried in the short message is consistent with the private short message center address stored in the private short message or not is judged, and when the address information is not consistent with the private short message center address, the received short message is filtered. According to the method, due to the fact that only certain public short message service center addresses are carried in illegal short messages sent by a pseudo base station, the pseudo base station in the method cannot acquire the private short message center addresses to be used as short message source address information, and thus the illegal short messages such as fraud short messages or junk short messages sent by the pseudo base station can be effectively filtered.
Description
Technical field
The present invention relates to note treatment technology, espespecially a kind of method for filtering short message, system and short message service center and terminal.
Background technology
Pseudo-base station is the various signaling procedures that utilize in mobile signaling protocol monitoring system monitoring mobile communication process, to obtain a kind of technology of the current positional information of cellphone subscriber.When specific region that user's positional information sends with service selection as cell ID (Cell ID) is consistent, it can be the note of user's issuing service customization.
Some lawless persons utilize pseudo-base station to carry out unlawful activities; user mobile phone often can be received from the illegal note of pseudo-base station as swindle note or refuse messages; the note number of these notes can be forged into note number arbitrarily by pseudo-base station; such as the note number of bank, the note number of operator and each Internet service business's note number, thereby carry out fraud.For user, be to be difficult to identify whether these swindle notes are the short message servers that really come from corresponding bank, operator and Internet service business.
Due to the note of pseudo-base station transmission and without operator SMS service centre, but directly by pseudo-base station, be handed down to user terminal, operator SMS service centre cannot filter these illegal notes.At present, the filtration of illegal note is realized at user terminal, filter method is mainly based on short message content, blacklist and white list, note to be filtered, by the risk content in identification short message content and judgement note number, be to belong to blacklist or white list, come synthetically the note receiving to be filtered.
But, because pseudo-base station is when sending swindle note or refuse messages, tend to note number to be revised as the note number of some public services, such as being modified as the note number of bank or the note number of operator, therefore, existing method for filtering short message is very possible because the note number of forging belongs to public services' number and is considered to white list, thereby cannot effectively filter swindle note or refuse messages.On the other hand, because pseudo-base station short message may be processed its content when sending, as increased separators such as " * ", to hide keyword filtration, thereby cannot correctly identify the risk content in short message content, like this, also reduced illegal note as effective filtration of swindle note or refuse messages.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of method for filtering short message, system and short message service center and terminal, can realize the effective filtration to illegal note.
In order to reach the object of the invention, the invention provides a kind of method for filtering short message, it is characterized in that, comprising: short message service center utilizes privately owned short message centre number to generate the address information in the number SCA of service centre field;
When terminal receives note, whether the address information of relatively carrying in note is consistent with the privately owned short message centre number of self storage, and when the two is inconsistent, filters the note receiving.
When the privately owned short message centre number of the address information of carrying in described relatively note and self storage is consistent, the method also comprises: the note that demonstration receives.
Address information in described generation SCA field comprises:
Described short message service center, according to the coding rule of the address Address field of protocol Data Unit PDU agreement regulation, will generate the address information in SCA field after privately owned short message centre number conversion corresponding to described terminal, and fills in Address field.
Before the method, also comprise and obtain privately owned short message centre number:
By key mapping algorithm, the subscriber phone number of described terminal or international mobile subscriber identity IMSI are mapped as to privately owned short message centre number; Or,
According to the mapping policy setting in advance, by the subscriber phone number of described terminal or IMSI number mapping, be privately owned short message centre number; Or,
According to the subscriber phone number of described terminal or international mobile subscriber identity IMSI, from attaching position register HLR, inquiry obtains privately owned short message centre number.
The method also comprises: the type Tosca of the service centre field information of revising in described SCA field retains service centre's type and is designated privately owned service centre type for adopting.
The present invention provides again a kind of short message service center, for utilizing privately owned short message centre number to generate the address information of SCA field, note is sent to terminal.
Described short message service center, specifically for according to the coding rule of the Address field of PDU agreement regulation, by generating the address information in SCA field after privately owned short message centre number conversion corresponding to the target terminal user that receives note, sends to terminal by note.
Described short message service center, also for obtaining privately owned short message centre number, specifically for by key mapping algorithm, is privately owned short message centre number by subscriber phone number or IMSI number mapping; Or,
According to the mapping policy setting in advance, by subscriber phone number or IMSI number mapping, be privately owned short message centre number; Or,
According to subscriber phone number or IMSI, from HLR, inquire about the privately owned short message centre number of acquisition.
Described short message service center, also retains service centre's type and is designated privately owned service centre type for adopting for revising the Tosca field information of described SCA field.
The present invention provides a kind of terminal again, and for when receiving note, whether the address information of relatively carrying in note is consistent with the privately owned short message centre number of self storage, and when the two is inconsistent, filters the note receiving.
Described terminal specifically for:
SCA field in the note that identification receives, and extract Address information according to the coding rule of PDU agreement regulation Address field; Address address information in comparison self SIM card in the privately owned short message centre number of storing and the SCA field identifying, if the two is not identical, filters the note receiving;
Compare the privately owned short message centre number of storing in self SIM card when identical with Address address information in the SCA field identifying, show the note receiving.
The present invention also provides a kind of filtering short message system, comprises above-mentioned short message service center and terminal.
This system also comprises the HLR that stores privately owned short message centre number, and described short message service center inquiry HLR obtains for generating the privately owned short message centre number of the address information of SCA field.
Compared with prior art, the present invention includes short message service center utilizes privately owned short message centre number to generate the address information in service centre's number (SCA) field; When terminal receives note, whether the address information of relatively carrying in note is consistent with the privately owned short message centre number of self storage, and when the two is inconsistent, filters the note receiving.When user normally sends note, note is to be first dealt into after short message service center, by short message service center, be transmitted to targeted customer again, and pseudo-base station is directly note to be sent to targeted customer, what in the illegal note due to the transmission of pseudo-base station, carry is only some disclosed short message service center numbers, and what adopt in the inventive method is the not obtainable privately owned short message centre number in pseudo-base station as the note address information of originating, realized illegal note as effective filtration of swindle note or refuse messages.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, or understand by implementing the present invention.Object of the present invention and other advantages can be realized and be obtained by specifically noted structure in specification, claims and accompanying drawing.
Accompanying drawing explanation
Accompanying drawing is used to provide the further understanding to technical solution of the present invention, and forms a part for specification, is used from explanation technical scheme of the present invention with the application's embodiment mono-, does not form the restriction to technical solution of the present invention.
Fig. 1 is the flow chart of method for filtering short message of the present invention;
Fig. 2 is the composition structural representation of filtering short message system of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, hereinafter in connection with accompanying drawing, embodiments of the invention are elaborated.It should be noted that, in the situation that not conflicting, the embodiment in the application and the feature in embodiment be combination in any mutually.
In the step shown in the flow chart of accompanying drawing, can in the computer system such as one group of computer executable instructions, carry out.And, although there is shown logical order in flow process, in some cases, can carry out shown or described step with the order being different from herein.
Because pseudo-base station cannot be connected with short message service center with the core net of operator, herein based on PDU short message protocol, numbering mechanism by reconstruct short message centre number, utilizes privately owned short message centre number to realize illegal note as effective filtration of swindle note or refuse messages for identification marking.
Fig. 1 is the flow chart of method for filtering short message of the present invention, as shown in Figure 1, comprising:
Step 100: short message service center utilizes privately owned short message centre number to generate the address information in service centre's number (SCA) field.
Existing note is in accordance with protocol Data Unit (PDU) agreement, and the PDU note that terminal receives comprises field as shown in table 1:
Table 1
Wherein, SCA field comprises again length (Length), service centre's type (Tosca) and address (Address) three fields.The coding rule of the Address field of PDU agreement regulation is: each byte of address is first used low level 4 bits (bit), then uses 4～7bit.If number number is odd number, 4～7bit of last byte is all set to 1, i.e. FxH.Such as number is 1234567, after coding, be exactly " 214365F7 ".
In addition, the DCS field in PDU agreement, also support following several type of receipt: type 0 (Class0), short message content is directly shown in terminal; Class1, short message content is stored in the SIM card of user terminal; Class2, short message content must be stored in the SIM card of user terminal, forbids being directly transferred to terminal; Class3, short message is stored in the internal storage space that is stored in terminal on subscriber equipment, is not stored in SIM card.
In this step, the address information generating in SCA field comprises:
Short message service center, according to the coding rule of the Address field of PDU agreement regulation, will generate the address information in SCA field after privately owned short message centre number conversion corresponding to the target terminal user that receives note, and fills in Address field.
In the present invention, privately owned short message centre number refers to a unique corresponding identification information of user identity with terminal, and here, user identity can be as phone number, international mobile subscriber identity (IMSI) etc.
Before this step, also comprise: obtain privately owned short message centre number, specifically comprise:
By key mapping algorithm, subscriber phone number or IMSI are mapped as to privately owned short message centre number; Or, according to the mapping policy setting in advance, by subscriber phone number or IMSI number mapping, be privately owned short message centre number.Wherein,
Key mapping algorithm is exactly cryptographic algorithm, and specific implementation belongs to those skilled in the art's conventional techniques means, does not limit concrete which kind of cryptographic algorithm here, is also not intended to limit the scope of the invention, and repeats no more here;
The mapping policy setting in advance is, the corresponding relation of phone number or No. IMSI and privately owned short message centre number, this corresponding relation can utilize the mode of random fit to generate, and specific implementation belongs to those skilled in the art's conventional techniques means, repeats no more here.
Here, short message service center can be in advance according to subscriber phone number or IMSI, and the key mapping algorithm setting in advance, and generates privately owned short message centre number corresponding to target terminal user storage, while needing, directly according to corresponding relation, obtains.Like this, just need not pass through attaching position register (HLR) inquiring user phone number or privately owned short message centre number corresponding to IMSI, be convenient to business rapid deployment.
Certainly, also corresponding relation can be stored in HLR, store IMSI number or a subscriber phone number of user's SIM card, corresponding to a privately owned short message centre number.Like this, while obtaining privately owned short message centre number, short message service center also needs to inquire about acquisition in HLR.Obtaining privately owned short message centre number can also be: according to subscriber phone number or IMSI, inquire about the privately owned short message centre number of acquisition from HLR.
Because privately owned short message centre number may take number resource, in order to save short message centre number, preferably, a privately owned short message centre number in the present invention can be corresponding to a plurality of phone numbers.That is to say, allow a plurality of phone numbers, such as 100 phone numbers of random distribution, a corresponding identical privately owned short message centre number.
Further, policy constraint for fear of the short message centre number resource that may be subject to, such as adopting the short message centre number of international type, its coding resource can be subject to international standard constraint, Yi Jia operator is difficult to obtain a large amount of sms center coding resources and distributes to user, in this step, in revising note, during the Address information of SCA field, also comprise:
Can revise the Tosca field information in SCA field simultaneously, such as being revised as to adopt, retaining service centre's type and be designated privately owned service centre type, thereby avoid this policy constraint.
Step 101: when terminal receives note, whether the address information of relatively carrying in note is consistent with the privately owned short message centre number of self storage, and when the two is inconsistent, filter the note receiving.
In this step, when terminal receives note, first identify the SCA field in note, and extract Address information according to the coding rule of PDU agreement regulation Address field;
Then, the Address address information in comparison self SIM card in the privately owned short message centre number of storing and the SCA field identifying, if the two is not identical, thinks that the note receiving is illegal note, filters the note receiving.Further in terminal, carry out indicating risk, as prompting on terminal screen " note source is not clear, please notes risk ", or " note is illegal, please notes risk " etc.
If the privately owned short message centre number of storing in terminal self SIM card is identical with the Address address information in the SCA field identifying, think that the note receiving is legal note, show the note receiving.
The specific implementation comparing in this step, can be completed by the short message service program in terminal (being note client), and now short message service program can be carried out filtration or the indicating risk of note; Also integrated should being used on can the SIM card by terminal, the now integrated application of SIM card can be pointed out risk to user owing to having short message interface.
It should be noted that, when short message service center is during to target terminal transmitting short message, if the type of receipt adopting in DCS field is Class2, note will preferentially be stored in the SIM card of target terminal and do not show, the now integrated application of SIM card can realize the filtration to note; If the type of receipt adopting in DCS field is Class1, note can show in terminal, so the integrated application of SIM card can only realize the prompting to note risk.
While adopting key and cryptographic algorithm mapping mode that IMSI number mapping is privately owned short message centre number in step 100, the privately owned short message centre number of storing in the SIM card of terminal in this step, can be with the storage of IMSI number form and by the privately owned short message centre number of the key with identical in step 100 and cryptographic algorithm generation.
It should be noted that, the privately owned short message centre number of storing in the SIM card of user terminal of the present invention and HLR, can be not according to the normal number form storage of routine, and directly according to the coding rule form storage of PDU, can save the process of conversion like this, thereby improve the execution efficiency of the inventive method.
When user normally sends note by terminal, note is to be first dealt into short message service center, then is transmitted to targeted customer by short message service center, and pseudo-base station is directly note to be sent to targeted customer.In the inventive method, in illegal note due to the transmission of pseudo-base station, be only to carry some disclosed short message service center numbers, and what adopt in the inventive method is the not obtainable privately owned short message centre number in pseudo-base station as the note address information of originating, realized illegal note that pseudo-base station is sent as effective filtration of swindle note or refuse messages.
Fig. 2 is the composition structural representation of filtering short message system of the present invention, as shown in Figure 2, at least comprises short message service center, and terminal; Wherein,
Short message service center, for utilizing privately owned short message centre number to generate the address information of service centre's number (SCA) field, sends to terminal by note; Specifically for according to the coding rule of the Address field of PDU agreement regulation, by generating the address information in SCA field after privately owned short message centre number conversion corresponding to the target terminal user that receives note, note is sent to terminal;
Terminal, for when receiving note, whether the address information of relatively carrying in note is consistent with the privately owned short message centre number of self storage, and when the two is inconsistent, filters the note receiving.
Wherein,
Terminal, specifically for, the SCA field in the note that identification receives, and extract Address information according to the coding rule of PDU agreement regulation Address field; Address address information in comparison self SIM card in the privately owned short message centre number of storing and the SCA field identifying, if the two is not identical, thinks that the note receiving is illegal note, filters the note receiving.Further in terminal, carry out indicating risk, as prompting on terminal screen " note source is not clear, please notes risk ", or " note is illegal, please notes risk " etc.
Terminal, also, for comparing privately owned short message centre number that self SIM card stores when identical with Address address information in the SCA field identifying, thinks that the note receiving is legal note, shows the note receiving.
Short message service center, also for obtaining privately owned short message centre number, specifically for by key mapping algorithm, is privately owned short message centre number by subscriber phone number or IMSI number mapping; Or, according to the mapping policy setting in advance, by subscriber phone number or IMSI number mapping, be privately owned short message centre number; Or, from according to subscriber phone number or IMSI, from HLR, inquire about and obtain privately owned short message centre number.
While utilizing IMSI number to obtain when privately owned short message centre number, system of the present invention also comprises the HLR that stores IMSI, and now, short message service center, also for inquiring about IMSI by HLR.
Short message service center also, for when revising the Address information of note SCA field, is revised the Tosca field information in SCA field simultaneously, such as being revised as to adopt, retaining service centre's type and is designated privately owned service centre type.
Below in conjunction with two specific embodiments, the specific implementation of the inventive method is elaborated.
Supposing has note will send to user A in short message service center, and now, first short message service center is inquired about in HLR according to the telephone number of user A, to obtain privately owned short message centre number that user A is corresponding as 861234567; Then, short message service center is according to the coding rule of the Address field of PDU agreement regulation, to after privately owned short message centre number conversion corresponding to the user A of acquisition, generate the address information in SCA field and fill in the Address field in SCA field, the information that Address field is carried be 68214365F7;
When user A receives note, the address information in the Address field in SCA field is translated as to the short message centre number 861234567 of reference format; Inquiring about the privately owned short message centre number of storing in the SIM card of self is 861234567, compare short message centre number corresponding to address information in the Address field in SCA field in the note of receiving, identical with the privately owned short message centre number of self storing, user A thinks that the note of receiving is legal and shows.
If hypothesis has pseudo-base station to send swindle note to user A again, now swindle note number that the short message centre number in note is public services as 13010305500; When user A receives note, inquiring about the privately owned short message centre number of storing in self SIM card is 861234567, find more afterwards, short message centre number in the note of receiving is not identical with the privately owned short message centre number of self storage, now, user A thinks that the note of receiving is illegal note, filters this note and/or in the terminal of user A, carries out indicating risk.
When user normally sends note by terminal, note is to be first dealt into short message service center, then is transmitted to targeted customer by short message service center, and pseudo-base station is directly note to be sent to targeted customer.In the inventive method, in illegal note due to the transmission of pseudo-base station, be only to carry some disclosed short message service center numbers, and what adopt in the inventive method is the not obtainable privately owned short message centre number in pseudo-base station as the note address information of originating, realized illegal note that pseudo-base station is sent as effective filtration of swindle note or refuse messages.
Although the disclosed execution mode of the present invention as above, the execution mode that described content only adopts for ease of understanding the present invention, not in order to limit the present invention.Those of skill in the art under any the present invention; do not departing under the prerequisite of the disclosed spirit and scope of the present invention; can in the form of implementing and details, carry out any modification and variation; but scope of patent protection of the present invention, still must be as the criterion with the scope that appending claims was defined.
Claims (13)
1. a method for filtering short message, is characterized in that, comprising: short message service center utilizes privately owned short message centre number to generate the address information in the number SCA of service centre field;
When terminal receives note, whether the address information of relatively carrying in note is consistent with the privately owned short message centre number of self storage, and when the two is inconsistent, filters the note receiving.
2. method for filtering short message according to claim 1, is characterized in that, when the privately owned short message centre number of the address information of carrying in described relatively note and self storage is consistent, the method also comprises: the note that demonstration receives.
3. method for filtering short message according to claim 1 and 2, is characterized in that, the address information in described generation SCA field comprises:
Described short message service center, according to the coding rule of the address Address field of protocol Data Unit PDU agreement regulation, will generate the address information in SCA field after privately owned short message centre number conversion corresponding to described terminal, and fills in Address field.
4. method for filtering short message according to claim 3, is characterized in that, before the method, also comprises and obtains privately owned short message centre number:
By key mapping algorithm, the subscriber phone number of described terminal or international mobile subscriber identity IMSI are mapped as to privately owned short message centre number; Or,
According to the mapping policy setting in advance, by the subscriber phone number of described terminal or IMSI number mapping, be privately owned short message centre number; Or,
According to the subscriber phone number of described terminal or international mobile subscriber identity IMSI, from attaching position register HLR, inquiry obtains privately owned short message centre number.
5. method for filtering short message according to claim 1 and 2, is characterized in that, the method also comprises: the type Tosca of the service centre field information of revising in described SCA field retains service centre's type and is designated privately owned service centre type for adopting.
6. a short message service center, is characterized in that, for utilizing privately owned short message centre number to generate the address information of SCA field, note is sent to terminal.
7. short message service center according to claim 6, it is characterized in that, described short message service center, specifically for according to the coding rule of the Address field of PDU agreement regulation, by generating the address information in SCA field after privately owned short message centre number conversion corresponding to the target terminal user that receives note, note is sent to terminal.
8. short message service center according to claim 7, it is characterized in that, described short message service center, also for obtaining privately owned short message centre number, specifically for by key mapping algorithm, by subscriber phone number or IMSI number mapping, be privately owned short message centre number; Or,
According to the mapping policy setting in advance, by subscriber phone number or IMSI number mapping, be privately owned short message centre number; Or,
According to subscriber phone number or IMSI, from HLR, inquire about the privately owned short message centre number of acquisition.
9. according to the short message service center described in claim 7 or 8, it is characterized in that described short message service center also retains service centre's type and is designated privately owned service centre type for adopting for revising the Tosca field information of described SCA field.
10. a terminal, is characterized in that, for when receiving note, whether the address information of relatively carrying in note is consistent with the privately owned short message centre number of self storage, and when the two is inconsistent, filters the note receiving.
11. terminals according to claim 10, is characterized in that, described terminal specifically for:
SCA field in the note that identification receives, and extract Address information according to the coding rule of PDU agreement regulation Address field; Address address information in comparison self SIM card in the privately owned short message centre number of storing and the SCA field identifying, if the two is not identical, filters the note receiving;
Compare the privately owned short message centre number of storing in self SIM card when identical with Address address information in the SCA field identifying, show the note receiving.
12. 1 kinds of filtering short message systems, is characterized in that, comprise the short message service center described in claim 6～9, and the terminal described in claim 10～11.
13. filtering short message systems according to claim 12, it is characterized in that, this system also comprises the HLR that stores privately owned short message centre number, and described short message service center inquiry HLR obtains for generating the privately owned short message centre number of the address information of SCA field.
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