CN104052756A - Method and system for service network elements to have safe access to service controller - Google Patents
Method and system for service network elements to have safe access to service controller Download PDFInfo
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- CN104052756A CN104052756A CN201410301060.7A CN201410301060A CN104052756A CN 104052756 A CN104052756 A CN 104052756A CN 201410301060 A CN201410301060 A CN 201410301060A CN 104052756 A CN104052756 A CN 104052756A
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Abstract
The invention relates to a method and system for service network elements to have safe access to a service controller. The method includes the steps that an initial access password is appointed for service routers and the service network elements, and an association relation is built and saved in a local configuration table; the service network elements send a connecting request to the service routers; information contained in the connecting request and association information in the local configuration table of the service routers are compared by the service routers; whether information matched with the connecting request exists in the local configuration table or not is judged, if yes, the service network elements are allowed to have access to the service routers, and otherwise, identity authentication failure information is generated and fed back to the service network elements; the service network elements having access to the service routers have access to the service controller through the service routers. According to the method and system, three-level architecture is adopted for having control over access of the service network elements, hacker network elements can be effectively prevented from having access to a charging operation network with false names, the connecting request sent by the service network elements not only comprises an access password but also comprises the version of the password, and access safety is greatly improved.
Description
Technical field
The present invention relates to field of telecommunication networks, relate in particular to the method and system of the safe access service controller of a kind of business network element.
Background technology
In telecom charging operation network, the main Diameter that uses connects, but the Diameter of standard is easily resolved by various tool.In prior art, business network element is linked into business router, in framework, only include business network element and business router two-stage, business network element sends to the request of business router not comprise access pin, leave potential safety hazard to the fail safe of access, and access request and service request are unseparated, cannot ensure the fail safe of service access.
Even add access pin in request, once password is consulted just no longer to change, if access pin is stolen by hacker, it utilizes certain means to pretend to be business network element, and access operation network, attacks operation network, will produce inconceivable consequence.
Therefore, need to develop a kind of method and system that business network element is accessed safely, the fail safe of business network element access and the fail safe of the network operation are provided.
Summary of the invention
Technical problem to be solved by this invention is for the deficiencies in the prior art, and the method and system of the safe access service controller of a kind of business network element are provided.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: the method for the safe access service controller of a kind of business network element, comprises the steps:
Step 1: each business network element that business router is corresponding with it is arranged initial access pin, sets up the incidence relation of business network element and initial access pin, and incidence relation is kept in local allocation list;
Step 2: business network element sends the connection request that comprises business network element ID, initial access pin and password version to its corresponding business router;
Step 3: the related information in the local allocation list of the information that described business router comprises connection request and business router compares;
Step 4: judge in local allocation list whether have the information of mating with this connection request, if existed, allow this business network element access service router, to the success of business network element feedback link, execution step 5; Otherwise connection failure, to business network element feeding back unsuccessful information, finishes;
Step 5: business network element receives after the feedback of successful connection, sends the activation request that comprises business network element ID, initial access pin, password version and type of service to business router;
Step 6: business router judges the legitimacy of activation request according to the method for step 4, is verified execution step 7; Otherwise activate unsuccessfully, to business network element feeding back unsuccessful information, finish;
Step 7: each business router is linked into service controller by long connection of setting up with service controller by the business network element of access.
The invention has the beneficial effects as follows: the application adopts three-level structure to carry out the access of service control network element, can effectively prevent that hacker's network element assumes another's name to access in charging operation network, and the connection request that business network element sends not only comprises that access pin also comprises password version, greatly improve the fail safe of access; In addition, in the present invention, business network element sends respectively connection request and activation request to business router, and network element access is separated with service access.
On the basis of technique scheme, the present invention can also do following improvement.
Further, the incidence relation of business network element and initial password comprises business network element ID, access pin and password version.
Further, technique scheme also comprises that described service controller not timing sends the corresponding password change cycle to each business router, in the time that the password change cycle arrives, the access pin of the each business network element of business router regular update and password version, and the access pin of renewal and password version are handed down to corresponding business network element, when in the situation that business network element need to access again with being connected disconnection of business router, business network element uses up-to-date access pin to access and be connected with password version.
Adopt the beneficial effect of above-mentioned further scheme: change cycle of the access pin of service controller service control network element access service router, regularly access pin is changed, hacker's network element that can prevent like this other is stolen access pin, the accounting access operation network of assuming another's name.
Further, technique scheme also comprises that service controller not timing sends the change cycle of corresponding PKI and private key to each business router, in the time that the change cycle of PKI and private key arrives, each business router regular update PKI and private key, described PKI and private key are for encryption and decryption and signature service controller and business router, the message of transmitting between business router and business network element and each business network element.
Adopt the beneficial effect of above-mentioned further scheme: the change cycle of the public and private key of service controller control, regularly public and private key is changed, utilize the information signature that public private key pair transmits to encrypt, in case peeped in message transmitting procedure, leak sensitive information.
Further, business router will be encrypted before the access pin of renewal, password version are handed down to corresponding business network element.
Another technical scheme that the present invention solves the problems of the technologies described above is as follows: the system of the safe access service controller of a kind of business network element, comprises business network element, business router and service controller;
Described business network element, it is for utilizing and the initial access pin of corresponding business router agreement, and sends the activation request that comprises the connection request of business network element ID, initial access pin and password version and comprise business network element ID, initial access pin, password version and type of service to business router;
Described business router, it,, for setting up the incidence relation of business network element and initial access pin, is kept at incidence relation in local allocation list; Related information in service request and the local allocation list that business network element is sent compares; Judge in local allocation list whether have the information of mating with this connection request, if existed, allow this business network element access service router, and then the correctness of checking activation request, correctly access this business as crossed, otherwise activate unsuccessfully;
Described service controller, it is for receiving the business network element of each business router access and controlling.
On the basis of technique scheme, the present invention can also do following improvement.
Further, the incidence relation of business network element and initial password comprises business network element ID, access pin and password version.
Further, described service controller also sends the corresponding password change cycle for not timing to each business router, in the time that the password change cycle arrives, the access pin of the each business network element of business router regular update and password version, and the access pin of renewal and password version are handed down to corresponding business network element, when in the situation that business network element need to access again with being connected disconnection of business router, business network element uses up-to-date access pin to access and be connected with password version.
Further, described service controller also sends the change cycle of corresponding PKI and private key to each business router for not timing, in the time that the change cycle of PKI and private key arrives, each business router regular update PKI and private key, described PKI and private key are for encryption and decryption service controller and business router, the message of transmitting between business router and business network element and each business network element.
Further, business router is also encrypted before the access pin of renewal and password version are handed down to corresponding business network element.
Brief description of the drawings
Fig. 1 is the method flow diagram of the safe access service controller of a kind of business network element of the present invention;
Fig. 2 is the system block diagram of the safe access service controller of a kind of business network element of the present invention.
In accompanying drawing, the list of parts of each label representative is as follows:
1, business network element, 2, business router, 3, service controller.
Embodiment
Below in conjunction with accompanying drawing, principle of the present invention and feature are described, example, only for explaining the present invention, is not intended to limit scope of the present invention.
As shown in Figure 1, the method for the safe access service controller of a kind of business network element, comprises the steps:
Step 1: each business network element that business router is corresponding with it is arranged initial access pin, sets up the incidence relation of business network element and initial access pin, and incidence relation is kept in local allocation list;
Step 2: business network element sends the connection request that comprises business network element ID, initial access pin and password version to its corresponding business router;
Step 3: the related information in the local allocation list of the information that described business router comprises connection request and business router compares;
Step 4: judge in local allocation list whether have the information of mating with this connection request, if existed, allow this business network element access service router, to the success of business network element feedback link, execution step 5; Otherwise connection failure, to business network element feeding back unsuccessful information, finishes;
Step 5: business network element receives after the feedback of successful connection, sends the activation request that comprises business network element ID, initial access pin, password version and type of service to business router;
Step 6: business router judges the legitimacy of activation request according to the method for step 4, is verified execution step 7; Otherwise activate unsuccessfully, to business network element feeding back unsuccessful information, finish;
Step 7: each business router is linked into service controller by long connection of setting up with service controller by the business network element of access.
Wherein, the incidence relation of business network element and initial password comprises business network element ID, access pin and password version.
Wherein, the access pin that described access request and activation request comprise separately and this difference of password board, and adopt different encipher-decipher methods also different, in the present embodiment, access pin in access request and password version adopt MD5 algorithm for encryption, and the access pin in activation request and password version adopt DES algorithm for encryption.
Technique scheme also comprises that described service controller not timing sends the corresponding password change cycle to each business router, in the time that the password change cycle arrives, the access pin of the each business network element of business router regular update and password version, and the access pin of renewal and password version are handed down to corresponding business network element, when in the situation that business network element need to access again with being connected disconnection of business router, business network element uses up-to-date access pin to access and be connected with password version.Change cycle of the access pin of service controller service control network element access service router, regularly access pin is changed, can prevent that like this other hacker's network element from stealing access pin, the accounting access operation network of assuming another's name.
Technique scheme also comprises that service controller not timing sends the change cycle of corresponding PKI and private key to each business router, in the time that the change cycle of PKI and private key arrives, each business router regular update PKI and private key, described PKI and private key are for encryption and decryption and signature service controller and business router, the message of transmitting between business router and business network element and each business network element.The change cycle of the public and private key of service controller control, regularly public and private key is changed, utilize the information signature that public private key pair transmits to encrypt, in case peeped in message transmitting procedure, leak sensitive information.
Business router will be encrypted before the access pin of renewal, password version are handed down to corresponding business network element.
As shown in Figure 2, the system of the safe access service controller of a kind of business network element, comprises business network element 1, business router 2 and service controller 3;
Described business network element 1, it is for utilizing the initial access pin of arranging with corresponding business router 2, and sends to business router 2 activation request that comprises the connection request of business network element ID, initial access pin and password version and comprise business network element ID, initial access pin, password version and type of service;
Described business router 2, it,, for setting up the incidence relation of business network element 1 and initial access pin, is kept at incidence relation in local allocation list; Related information in the service request that business network element 1 is sent and local allocation list compares; Judge in local allocation list whether have the information of mating with this connection request, if existed, allow this business network element 1 access service router two, and then the correctness of checking activation request, correctly access this business as crossed, otherwise activate unsuccessfully;
Described service controller 3, it is for the business network element that receives each business router 2 and access and control.
Described business network element 1 comprises business network element ID, access pin and password version with the incidence relation of initial password.
Described service controller 3 also sends the corresponding password change cycle for not timing to each business router 2, in the time that the password change cycle arrives, access pin and the password version of the each business network element of business router 2 regular update, and the access pin of renewal and password version are handed down to corresponding business network element 1, when in the situation that business network element 1 need to access again with being connected disconnection of business router 2, business network element 1 uses up-to-date access pin to access and be connected with password version.
Described service controller 3 also sends the change cycle of corresponding PKI and private key to each business router 2 for not timing, in the time that the change cycle of PKI and private key arrives, each business router 2 regular update PKI and private keys, described PKI and private key are for encryption and decryption service controller 2 and business router 2, the message of transmission between business router 2 and business network element 1 and each business network element 1.
Described business router 2 is also encrypted before the access pin of renewal and password version are handed down to corresponding business network element 1.
In the present invention, initial access pin password is that business network element and business router are made an appointment, and initial password is unified after encrypting to be managed by service end.Manually reappoint access pin and in system exception situation, carry out artificial agreement.Upgrading access pin is to be handed down to business network element after router upgrades automatically.
Initial access pin, manually reappoint access pin and be the plaintext of 8 byte lengths with new access pin, comprise digital and alphabetical combination in any, initial access pin is manually arranged at the first accounting access operation network of system, and upgrading access pin is to reach the access pin change cycle and then change at access pin to issue.The access pin of business network element access service router is to be encrypted through MD5 algorithm.
The message private key that carries out between business network element and business router will transmitting in the process of business transmission is signed more, and then be encrypted with md5 algorithm, the message through above-mentioned processing is sent to business router by business network element, so just ensured the fail safe of the message in message transport process.
Whole system is taked three-level structure, carried out the change cycle of service control router side access pin by service controller, in the time that the password change cycle expires, business router carries out regenerating of access pin and public and private key, and be issued to business network element, business network element access time need to be carried the access pin of redaction, need to sign with new public and private key, cryptographic operation when message transfer.So just guarantee the system safety in whole system running.
1. password change process is as follows:
1) service controller not timing sends the corresponding password change cycle to each business router;
2) in the time that the password change cycle arrives, business router generates new access pin;
3) business router is preserved newly-generated access pin and password version in local configuration information, and state comes into force for waiting;
4) router carries out the processing of CCR group bag to new password, password version, and CCR group bag is sent to business network element;
5) business network element receives CCR group bag, parses access pin and password version in CCR group bag, and preserves new access pin and password version;
6) business network element carries out CCA response packet according to result, and returns to CCA response packet to business router;
7) business router receives CCA response packet, resolves CCA response packet, issues successfully if CCA response packet is password, and business router upgrades local configuration information, and Old Password lost efficacy, otherwise resends CCR group bag.
2. the message of transmitting in operation network will carry out sending after digital signature again.Wherein, signature algorithm is as follows
1) transmitting terminal adopts MD5 algorithm to calculate a summary (abstract) to original text, then with RSA Algorithm, summary part private key D is encrypted, and obtains digital signature, and this signature is preserved by the uppercase mode of 16 systems.(corresponding two the 16 system characters of byte mend 0 before two of less thaies);
2) transmitting terminal sends to digital signature service end together with original text;
3) receiving terminal is taken original text and digital signature, and the signature of 16 systems is converted into stream, in conjunction with PKI D, digital signature is decrypted with RSA Algorithm, obtains the digest value that transmitting terminal calculates; With MD5 algorithm, original text is calculated to summary again and obtain the digest value that receiving terminal calculates; The digest value that the digest value that relatively transmitting terminal calculates and receiving terminal calculate, both are equal, and representative digit signature verification is passed through, and does not wait and represents authentication failed.
Signature occurs in the time that source network element is initiated service message, after this stage occurs to encrypt again.This process can use the PKI and the private key that in key updating process, upgrade, and source network element is signed with private key to the message of needs signature, carries out signature verification by recipient with PKI, has so just strengthened the fail safe of message in transmitting procedure.
Wherein, RSA Algorithm requires: key length: 1024 filling mode acquiescence: RSA_PKCS1_PADDING; MD5 specification: length of summarization 16 bytes (character string is capitalization); Key is generated voluntarily by business router.
Based on the consideration to performance, suggestion key length is all the most basic, and as the development along with business, when safety is had to higher requirement, each client is carried out corresponding key upgrading and access special line etc.
3. session key generating algorithm
In view of session key only changes for data encryption and this period of key of conversation procedure, therefore in a conversation procedure, use the DES Cipher Strength of 64 keys enough to resist general assailant.
Random key generating algorithm is divided into following two kinds of scenes:
In the time there is randomizer physical equipment, from randomizer, read arbitrarily 8 bytes as random key, owing to being physical accidental equipment, the random degree of the random key that therefore this method obtains is best;
In the time not there is not randomizer physical equipment, utilize content in system time, EMS memory occupation, interim internal memory etc. to obtain 8 bytes by processing arbitrarily, this is by pseudo-random method, the random degree of the random number producing depends on the seed (being the content in above-mentioned system time, EMS memory occupation, interim internal memory) of algorithm, therefore has certain predictability.
Business network element (as VC) is after accounting access net in billing network, can be initiatively with net in other activating service network element consult keys of encrypting, in message interaction process, use the key consulting to be encrypted, to decipher to interaction message.What have friendship prevents that charging operation network is under attack, ensures the safety of charging operation network.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a method for the safe access service controller of business network element, is characterized in that, comprises the steps:
Step 1: each business network element that business router is corresponding with it is arranged initial access pin, sets up the incidence relation of business network element and initial access pin, and incidence relation is kept in local allocation list;
Step 2: business network element sends the connection request that comprises business network element ID, initial access pin and password version to its corresponding business router;
Step 3: the related information in the local allocation list of the information that described business router comprises connection request and business router compares;
Step 4: judge in local allocation list whether have the information of mating with this connection request, if existed, allow this business network element access service router, to the success of business network element feedback link, execution step 5; Otherwise connection failure, to business network element feeding back unsuccessful information, finishes;
Step 5: business network element receives after the feedback of successful connection, sends the activation request that comprises business network element ID, initial access pin, password version and type of service to business router;
Step 6: business router judges the legitimacy of activation request according to the method for step 4, is verified execution step 7; Otherwise activate unsuccessfully, to business network element feeding back unsuccessful information, finish;
Step 7: each business router is linked into service controller by long connection of setting up with service controller by the business network element of access.
2. the method for the safe access service controller of a kind of business network element according to claim 1, is characterized in that, the incidence relation of business network element and initial password comprises business network element ID, access pin and password version.
3. the method for the safe access service controller of a kind of business network element according to claim 1, it is characterized in that, also comprise that described service controller not timing sends the corresponding password change cycle to each business router, in the time that the password change cycle arrives, the access pin of the each business network element of business router regular update and password version, and the access pin of renewal and password version are handed down to corresponding business network element, when in the situation that business network element need to access again with being connected disconnection of business router, business network element uses up-to-date access pin to access and be connected with password version.
4. the method for the safe access service controller of a kind of business network element according to claim 1, it is characterized in that, also comprise that service controller not timing sends the change cycle of corresponding PKI and private key to each business router, in the time that the change cycle of PKI and private key arrives, each business router regular update PKI and private key, described PKI and private key are for encryption and decryption and signature service controller and business router, the message of transmitting between business router and business network element and each business network element.
5. the method for the safe access service controller of a kind of business network element according to claim 3, is characterized in that, business router will be encrypted before the access pin of renewal, password version are handed down to corresponding business network element.
6. realize in claim 1-5 a system for the safe access service controller method of business network element described in any one, it is characterized in that, comprise business network element, business router and service controller;
Described business network element, it is for utilizing and the initial access pin of corresponding business router agreement, and sends the activation request that comprises the connection request of business network element ID, initial access pin and password version and comprise business network element ID, initial access pin, password version and type of service to business router;
Described business router, it,, for setting up the incidence relation of business network element and initial access pin, is kept at incidence relation in local allocation list; Related information in service request and the local allocation list that business network element is sent compares; Judge in local allocation list whether have the information of mating with this connection request, if existed, allow this business network element access service router, and then the correctness of checking activation request, correctly access this business as crossed, otherwise activate unsuccessfully;
Described service controller, it is for receiving the business network element of each business router access and controlling.
7. the system of the safe access service controller of a kind of business network element according to claim 6, is characterized in that, the incidence relation of business network element and initial password comprises business network element ID, access pin and password version.
8. the system of the safe access service controller of a kind of business network element according to claim 6, it is characterized in that, described service controller also sends the corresponding password change cycle for not timing to each business router, in the time that the password change cycle arrives, the access pin of the each business network element of business router regular update and password version, and the access pin of renewal and password version are handed down to corresponding business network element, when in the situation that business network element need to access again with being connected disconnection of business router, business network element uses up-to-date access pin to access and be connected with password version.
9. the system of the safe access service controller of a kind of business network element according to claim 6, it is characterized in that, described service controller also sends the change cycle of corresponding PKI and private key to each business router for not timing, in the time that the change cycle of PKI and private key arrives, each business router regular update PKI and private key, described PKI and private key are for encryption and decryption service controller and business router, the message of transmitting between business router and business network element and each business network element.
10. the system of the safe access service controller of a kind of business network element according to claim 6, is characterized in that, business router is also encrypted before the access pin of renewal and password version are handed down to corresponding business network element.
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| CN104052756B (en) | 2017-08-01 |
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