CN108282753A - A kind of short message agency retransmission method - Google Patents

Abstract

The invention discloses a kind of short message agency retransmission methods, including：The ownership short message service center of short message initiator user sends short message route request information to the home location register of recipient user；Short message route test functive judges that short message route requests process leaks security risk with the presence or absence of personal information；Short message route test functive short-message route requests response message；Incidence relation informing message is acted on behalf of delivery functionality by short message route test functive；Short message acts on behalf of delivery functionality and preserves incidence relation；Short message acts on behalf of delivery functionality and receives the signaling message for loading content of short message；Short message acts on behalf of delivery functionality and sends short message route request information to the home location register of recipient user；Short message acts on behalf of the signaling message that delivery functionality forwarding loads content of short message.The present invention realizes the effective protection of customer position information and IMSI marks, prevents individual privacy information from leaking.

Description

A Short Message Agent Forwarding Method

technical field

The invention relates to the field of routing control methods of mobile communication networks, in particular to a short message agent forwarding method.

Background technique

According to the 3GPP (Third Generation Partnership Project) TS29.002 specification, at present, when two users on the same operator network or two users on different operator networks with roaming agreements send short messages to each other, Use the routing organization method shown in Figure 2. That is, the service MSC (Mobile Switching Center, Mobile Switching Center) of the originator user of the short message sends the short message to the home short message center SMC (Short Message Center) of the originator user, and then the home SMC of the originator user passes the MAP (Mobile ApplicationPart , mobile application part) protocol flow, visit the home location register (HLR) of the short message recipient user, obtain the short message recipient user's IMSI and the routing identifier (MSC number) of the MSC serving it, and determine the short message forwarding route, Then the home SMC of the initiator user forwards the short message to the serving MSC of the short message receiver user, and the serving MSC of the receiver user finally sends the short message to the receiver user.

The routing organization of the above short message transmission enables illegal network entities to use the standard MAP signaling process provided by 3GPP to obtain the user's IMSI (International Mobile Subscriber Identification Number) and service MSC number. The IMSI is the user's private identification, and its leakage will bring serious security problems to the user; the number of the service MSC is a location identification of the user, which will lead to the leakage of the user's location information. For individuals or groups that need to keep the location information confidential , the leakage of location information may bring huge security risks to users (see 3GPP TR 33.900). In order to solve the above problems, the present invention designs a short message agent forwarding method based on user location and IMSI protection.

Contents of the invention

Aiming at the deficiencies and defects existing in the prior art, the present invention provides a short message agent forwarding method. By setting the short message routing control function body and the short message agent forwarding function body, under the premise of ensuring the normal use of the short message service, Protect user location and IMSI security.

For realizing said purpose, the technical scheme that the present invention adopts is: a kind of short message agent forwarding method, comprises the following steps:

Step 1: the home short message center of the short message initiator user sends a short message routing request message to the home location register of the receiver user;

Step 2: The short message routing control function body judges whether there is a potential safety hazard of personal information leakage in the short message routing request process;

Step 3: the short message routing control function forwards the short message routing request response message;

Step 4: the short message routing control function body notifies the short message agent forwarding function body of the association relationship;

Step 5: The short message agent forwarding function body saves the association relationship;

Step 6: The short message agent forwarding function body receives the signaling message loaded with the content of the short message;

Step 7: The short message agent forwarding function body sends a short message routing request message to the home location register of the recipient user;

Step 8: The short message agent forwarding function body forwards the signaling message carrying the content of the short message.

Further, the short message routing control function body is deployed at the front end of the recipient user's home location register or on the signaling transmission path, and is used to intercept the short message routing request reply message returned by the home location register.

Further, said step 2 specifically includes:

Step 2.1: The short message routing control function body intercepts the short message routing request reply message sent by the home location register of the recipient user;

Step 2.2: According to the short message routing request response message, judge whether the network domain of the short message routing request originator is credible, and then confirm whether there is a potential safety hazard of personal information leakage;

If the initiator network domain is untrustworthy, it is determined that there is a security risk of personal information leakage, and then step 3 is performed; if the initiator network domain is trusted, it is determined that there is no security risk of personal information leakage, and then the short message routing control function directly The short message routing request reply message is forwarded to the initiator of the short message routing request message, and the forwarding of the short message agent is ended.

Further, the step 3 specifically includes:

Step 3.1: The short message routing control function body selects a short message agent forwarding function body;

Step 3.2: Replace the MSC number in the short message routing request response message with the address of the short message agent forwarding function body as a virtual MSC number; according to the pre-configured distribution rules, the short message routing control function body allocates a virtual IMSI to replace the short message routing request IMSI in the reply message;

Step 3.3: forwarding the replaced short message routing request response message to the initiator of the short message routing request message;

Step 3.4: After receiving the short message routing request response message, the originator of the short message routing request message sends a signaling message carrying the content of the short message according to the address identified by the "virtual MSC number" carried in the short message routing request response message.

Further, said step 4 specifically includes:

Step 4.1: The short message routing control function correlates the allocated virtual IMSI with the MSISDN number of the short message receiver;

Step 4.2: Notify the short message agent forwarding function body corresponding to the virtual MSC number of the association relationship between the two.

Further, said step 7 specifically includes:

Step 7.1: The short message agent forwarding function body parses the signaling message loaded with the content of the short message to obtain the MSISDN number of the short message receiver through the stored association between the virtual IMSI and the MSISDN number;

Step 7.2: Construct a short message routing request message for obtaining the serving MSC number and IMSI of the short message recipient user;

Step 7.3: Send the short message routing request message to the HLR of the recipient user corresponding to the MSISDN number.

Further, said step 8 specifically includes:

Step 8.1: After processing the short message routing request message, the receiver user's home location register sends a short message routing request response message;

Step 8.2: The short message routing control function directly forwards the short message routing request response message to the short message proxy forwarding function;

Step 8.3: The short message proxy forwarding function replaces the virtual IMSI in the signaling message carrying the content of the short message with the user IMSI carried in the short message routing request response message;

Step 8.4: Forward the replaced signaling message carrying the content of the short message according to the address identified by the "MSC number" carried in the short message routing request response message.

The beneficial effects of the present invention are:

A short message proxy forwarding method of the present invention, firstly, the short message routing control function body judges whether the network domain of the routing request originator is credible, and then confirms whether there is a potential safety hazard of personal information leakage, avoids unnecessary short message proxy forwarding, and improves improve the efficiency of sending short messages; when there is a potential safety hazard of personal information leakage, the short message routing control function replaces the user's private identity IMSI and location identifier MSC number in the short message routing request response message, ensuring that the user's private identity IMSI and The location identification MSC number will not be exposed to untrustworthy network domains, effectively resisting attacks by attackers using short message routing request messages to obtain user location and IMSI identification; in addition, the short message agent forwarding function realizes the normal sending of short messages, Ensure normal communication between users.

Description of drawings

Figure 1 is a flow chart of the method of the present invention.

Fig. 2 is a schematic diagram of the short message sending flow in the prior art of the method of the present invention.

FIG. 3 is a schematic diagram of a short message sending process in which there is no potential safety hazard of personal information leakage in the method of the present invention.

Fig. 4 is a schematic flow diagram of a short message sending process in which there is a potential safety hazard of personal information leakage in the method of the present invention.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

Embodiment 1: as shown in Figure 1, a kind of short message agency forwarding method comprises the following steps:

Step S101: the home short message center of the short message initiator user sends a short message routing request message to the home location register of the receiver user;

Step S102: the short message routing control function body judges whether there is a potential safety hazard of personal information leakage in the short message routing request process;

Step S103: the short message routing control function body forwards the short message routing request response message;

Step S104: the short message routing control function notifies the short message proxy forwarding function of the association relationship;

Step S105: the short message agent forwarding function body saves the association relationship;

Step S106: the short message agent forwarding function body receives the signaling message carrying the content of the short message;

Step S107: the short message proxy forwarding function body sends a short message routing request message to the home location register of the recipient user;

Step S108: The short message agent forwarding function body forwards the signaling message carrying the content of the short message.

Embodiment 2: a kind of short message agency forwarding method, comprises the following steps:

Step S201: The home short message center of the short message sender user sends a short message routing request message, ie, an SRI_FOR_SM signaling message, to the receiver user's home location register.

Step S202: The short message routing control function intercepts the short message routing request reply message sent by the HLR of the recipient user, that is, the SRI_FOR_SM ACK signaling message.

Step S203: The short message routing control function judges whether the network domain of the sender of the short message routing request is credible according to the short message routing request response message, and then confirms whether there is a potential safety hazard of personal information leakage.

If the initiator network domain is untrustworthy, there is a security risk of personal information leakage, and then as shown in Figure 4, step S204 is performed; if the initiator network domain is credible, there is no security risk of personal information leakage, and then as shown in Figure 3 As shown, the short message routing control function directly forwards the short message routing request response message to the originator of the short message routing request message, and ends the forwarding of the short message proxy.

Among them, the definition of whether the network domain is credible is determined by the actual network domain. For example, for a private mobile communication network, the public mobile communication network can be considered as an untrustworthy network domain; The network can be regarded as an untrusted network domain; the network where the short message forwarding agent function body is located is a trusted network domain.

Step S204: The short message routing control function selects a short message proxy forwarding function.

Step S205: Replace the MSC number in the short message routing request response message with the address of the short message agent forwarding function body as the virtual MSC number; according to the pre-configured distribution rules, the short message routing control function body allocates a virtual IMSI to replace the short message routing request The IMSI in the reply message.

Wherein, the allocation rule of the virtual IMSI may be fixed allocation, random allocation, or allocation based on the real IMSI value of the user. The present invention does not limit the specific allocation manner of the virtual IMSI.

Step S206: Forward the replaced short message routing request response message to the originator of the short message routing request message.

Step S207: After receiving the short message routing request response message, the initiator of the short message routing request message sends a signaling message loaded with the content of the short message according to the address identified by the "virtual MSC number" carried in the short message routing request response message, that is MT_FORWARD_SM signaling message.

Step S208: The short message routing control function associates the allocated virtual IMSI with the MSISDN number of the short message recipient.

Wherein, the relationship between the virtual IMSI and the MSISDN number of the short message receiver can be various, and the present invention does not limit the relationship between the virtual IMSI and the MSISDN number of the short message receiver.

Step S209: The short message routing control function notifies the short message agent forwarding function corresponding to the virtual MSC number of the relationship between the two.

Step S210: The short message agent forwarding function saves the association relationship.

Step S211: The short message agent forwarding function body receives the signaling message carrying the content of the short message.

Step S212: The short message agent forwarding function analyzes the signaling message carrying the content of the short message through the stored association between the virtual IMSI and the MSISDN number to obtain the MSISDN number of the short message recipient.

Step S213: The short message proxy forwarding function constructs a short message routing request message for obtaining the serving MSC number and IMSI of the short message recipient user.

Step S214: The short message proxy forwarding function sends the short message routing request message to the HLR of the recipient user corresponding to the MSISDN number.

Step S215: After processing the short message routing request message, the home location register of the receiving user sends a short message routing request response message.

Step S216: The short message routing control function directly forwards the short message routing request reply message to the short message proxy forwarding function.

Step S217: The short message proxy forwarding function replaces the virtual IMSI in the signaling message carrying the content of the short message with the user IMSI carried in the short message routing request response message.

Step S218: The short message agent forwarding function forwards the replaced signaling message carrying the content of the short message according to the address identified by the "MSC number" carried in the short message routing request response message, that is, to the serving MSC of the recipient user.

A short message proxy forwarding method proposed by the present invention is used to avoid the leakage of personal information in the short message receiving process; the method judges whether the network domain of the routing request initiator is credible through the short message routing control function body, and then confirms whether there is an individual Potential security risks of information leakage; the short message routing control function replaces the user's private identity IMSI and location identifier MSC number in the short message routing request response message, ensuring that the user's private identity identifier IMSI and location identifier MSC number will not be exposed to untrustworthy In the network domain, it is effective to resist the attacker's attack behavior of using the short message routing request message to obtain the user's location and IMSI identification, and the short message agent forwarding function realizes the normal sending of the short message and ensures the normal communication between users; the method proposed by the present invention It is effective and reliable, and can avoid the leakage of personal information in the process of receiving short messages for individuals or groups who need location information to be kept secret.

It should be noted that the above-mentioned embodiments are only used to illustrate or explain the principle of the present invention, and are not intended to limit the present invention. Therefore, some improvements can be made without departing from the spirit and scope of the present invention. and modifications, these improvements and modifications should be considered within the patent scope of the present invention.

Claims (7)

1. A short message agent forwarding method is characterized in that, comprising the following steps: Step 1: the home short message center of the short message initiator user sends a short message routing request message to the home location register of the receiver user; Step 2: The short message routing control function body judges whether there is a personal information leakage security risk in the short message routing request process; Step 3: the short message routing control function forwards the short message routing request response message; Step 4: the short message routing control function body notifies the short message agent forwarding function body of the association relationship; Step 5: The short message agent forwarding function body saves the association relationship; Step 6: The short message agent forwarding function body receives the signaling message loaded with the content of the short message; Step 7: The short message agent forwarding function body sends a short message routing request message to the home location register of the recipient user; Step 8: The short message agent forwarding function body forwards the signaling message carrying the content of the short message. 2. a kind of short message agency forwarding method according to claim 1, it is characterized in that, described short message route control function body is deployed on the front end of the home location register of receiver user or on the transfer path of signaling, uses It is used to intercept the short message routing request response message returned by the home location register. 3. a kind of short message agent forwarding method according to claim 2, is characterized in that, described step 2 specifically comprises: Step 2.1: The short message routing control function body intercepts the short message routing request reply message sent by the home location register of the recipient user; Step 2.2: According to the short message routing request response message, judge whether the network domain of the short message routing request originator is credible, and then confirm whether there is a potential safety hazard of personal information leakage; If the initiator network domain is untrustworthy, it is determined that there is a security risk of personal information leakage, and then step 3 is performed; if the initiator network domain is trusted, it is determined that there is no security risk of personal information leakage, and then the short message routing control function directly The short message routing request reply message is forwarded to the initiator of the short message routing request message, and the forwarding of the short message agent is ended. 4. a kind of short message agent forwarding method according to claim 2, is characterized in that, described step 3 specifically comprises: Step 3.1: The short message routing control function body selects a short message proxy forwarding function body; Step 3.2: Replace the MSC number in the short message routing request response message with the address of the short message agent forwarding function body as a virtual MSC number; according to the pre-configured distribution rules, the short message routing control function body allocates a virtual IMSI to replace the short message routing request IMSI in the reply message; Step 3.3: forwarding the replaced short message routing request response message to the initiator of the short message routing request message; Step 3.4: After receiving the short message routing request response message, the originator of the short message routing request message sends a signaling message carrying the content of the short message according to the address identified by the "virtual MSC number" carried in the short message routing request response message. 5. a kind of short message agency forwarding method according to claim 2 is characterized in that, described step 4 specifically comprises: Step 4.1: The short message routing control function correlates the allocated virtual IMSI with the MSISDN number of the short message receiver; Step 4.2: Notify the short message agent forwarding function body corresponding to the virtual MSC number of the association relationship between the two. 6. A kind of short message agency forwarding method according to claim 1, is characterized in that, described step 7 specifically comprises: Step 7.1: The short message agent forwarding function body parses the signaling message loaded with the content of the short message to obtain the MSISDN number of the short message receiver through the stored association between the virtual IMSI and the MSISDN number; Step 7.2: Construct a short message routing request message for obtaining the serving MSC number and IMSI of the short message recipient user; Step 7.3: Send the short message routing request message to the HLR of the recipient user corresponding to the MSISDN number. 7. A kind of short message agency forwarding method according to claim 1, is characterized in that, described step 8 specifically comprises: Step 8.1: After processing the short message routing request message, the receiver user's home location register sends a short message routing request response message; Step 8.2: The short message routing control function directly forwards the short message routing request response message to the short message proxy forwarding function; Step 8.3: The short message proxy forwarding function replaces the virtual IMSI in the signaling message carrying the content of the short message with the user IMSI carried in the short message routing request response message; Step 8.4: Forward the replaced signaling message carrying the content of the short message according to the address identified by the "MSC number" carried in the short message routing request response message.