CN100512112C - WAPI certificate identification method - Google Patents

WAPI certificate identification method Download PDF

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Publication number
CN100512112C
CN100512112C CNB2007100188858A CN200710018885A CN100512112C CN 100512112 C CN100512112 C CN 100512112C CN B2007100188858 A CNB2007100188858 A CN B2007100188858A CN 200710018885 A CN200710018885 A CN 200710018885A CN 100512112 C CN100512112 C CN 100512112C
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entity
discriminator
certificate
identification
grouping
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CN101132280A (en
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铁满霞
曹军
庞辽军
赖晓龙
黄振海
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China Iwncomm Co Ltd
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China Iwncomm Co Ltd
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Abstract

This invention relates to a discriminating method for WAPI certificates including: when a discrimination applicant entity associates or re-associates with a discriminator entity, the discriminator entity sends an activation packet to the applicant entity, which sends an accessed required packet to the discriminator entity to validate if the discriminating ID in the packet is correct, if not, it casts it off, when the service entity receives a certificate request packet, it verifies if the identities of the discriminator and the request entities are legal and feeds back a cetificate response packet to the discriminator to verify it, and the request entity verifies the accessed discrimination response packet after it receives it.

Description

A kind of WAPI certificate identification method
Technical field
The present invention relates to a kind of WAPI certificate identification method.
Background technology
In order to solve the security breaches of WEP (Wired Equivalent Privacy) the security mechanism existence that defines among WLAN (wireless local area network) WLAN (Wireless Local Area Network) the international standard ISO/IEC8802-11, China has issued the WLAN (wireless local area network) national standard and has revised list No. 1, adopted WAPI WAPI (WLAN Authentication and Privacy Infrastructure) security mechanism to solve the safety problem of WLAN (wireless local area network).
WAPI is the safe practice with novelty that is proposed by China, mainly comprise wireless local area network authentication infrastructure WAI (WLAN Authentication Infrastructure) and wireless local area network security foundation structure WPI (WLAN Privacy Infrastructure) two parts, wherein WAI provides the function of security policy negotiation, user identity discriminating, key agreement, access control.WAPI certificate authentication protocol adopts public key cryptography technology, by differentiating service entities ASE (Authentication Service Entity), finish the reciprocity two-way discriminating of identification requester entity ASUE (Authentication Supplicant Entity) and discriminator entity A E (Authenticator Entity), ensure validated user visit legitimate network, simultaneously for IKMP provides shared base key BK (Base Key), thereby realize the negotiation and the distribution of data communication session available key.As seen, WAPI certificate authentication protocol is the key and the core of whole WAPI agreement.
Related or when being associated to discriminator entity (as WAP (wireless access point)) again when identification requester entity (as client), the two need finish WAPI certificate discrimination process by differentiating service entities (as authentication server), have only and differentiate successfully, identification requester entity could insert the discriminator entity and carry out access to netwoks.At present in WAPI certificate discrimination process, identification requester entity and discriminator entity need be finished 1 signature and 2 signature verifications respectively, and the discriminating service entities need be finished 1 signature (during local the access) or 2 signatures (during the access of strange land) and 2 signature-verification process.As everyone knows, the computing capability of the identification requester entity during usually discriminator entity and some are used a little less than, and PKI calculating is more consuming time, this will form the network insertion bottleneck, the operational efficiency of agreement is low, under the frequent situation about switching of public access wireless LAN PWLAN (PublicWLAN) roaming, the operational efficiency of agreement can be lower especially.
Summary of the invention
The present invention is the above-mentioned technical problem of the WAPI certificate discrimination process existence in the solution background technology, and a kind of operational efficiency height of agreement is provided, and can improve the WAPI certificate identification method of power system capacity.
Technical solution of the present invention is: the present invention is a kind of WAPI certificate identification method, and its special character is: this method may further comprise the steps:
1) related or when being associated to the discriminator entity again when identification requester entity, the discriminator entity sends to identification requester entity and differentiates and activate grouping, and this discriminatings activates grouping and comprises and differentiate and identify;
2) after identification requester entity receives that discriminating activates grouping, send the access discrimination request grouping to the discriminator entity, this access discrimination request grouping comprises differentiates sign, the interim PKI of identification requester entity, the certificate of identification requester entity and the signature that identification requester entity utilizes long-term private that aforementioned all fields are done;
3) after the discriminator entity receives to insert discrimination request grouping, verify whether the discriminating sign that checking inserts in the discrimination request grouping is correct, if incorrect, then abandons this grouping; Otherwise, to differentiating that service entities sends the request of certificate authentication grouping, the request of certificate authentication grouping comprises the signature that the certificate of interim PKI, discriminator entity of signature that the certificate of the interim PKI of differentiating sign, identification requester entity, identification requester entity and identification requester entity utilize long-term private aforementioned all fields are done, discriminator entity and discriminator entity utilize long-term private that aforementioned all the elements and field are done;
4) after differentiating that service entities is received the request of certificate authentication grouping, whether the identity of checking discriminator entity and identification requester entity is legal, returns the certificate authentication response packet to the discriminator entity then; The certificate authentication response packet comprises discriminating service entities that certificate verification result, identification requester entity and the discriminator entity of certificate verification result, the discriminator entity of interim PKI, the identification requester entity of the interim PKI of differentiating sign, identification requester entity, discriminator entity the trusted signature to aforementioned field;
5) after the discriminator entity is received the certificate authentication response packet, verify; Whether the signature of checking discriminating sign, the interim PKI of discriminator entity and the discriminating service entities that the discriminator entity is trusted wherein is correct, if incorrect, then abandons this grouping; If correctly, obtain the interim PKI of the certificate verification result and the identification requester entity of identification requester entity, return the access authentication response packet to identification requester entity, it is identical with the content of certificate authentication response packet to insert authentication response packet;
6) after identification requester entity receives to insert authentication response packet, verify; Whether the signature of checking discriminating sign, the interim PKI of identification requester entity and the discriminating service entities that identification requester entity is trusted wherein is correct, if incorrect, then abandons this grouping; If correct, obtain the certificate verification result of discriminator entity and the interim PKI of discriminator entity.
Above-mentioned steps 4) whether legal the identity of checking discriminator entity and identification requester entity concrete steps as follows in:
4.1) signature of checking discriminator entity and identification requester entity, if incorrect, then directly abandon this grouping; If correctly proceed to step 4.2);
4.2) checking discriminator entity and identification requester entity certificate and validity thereof, if illegal, then directly abandon this grouping or return the certificate authentication response packet to the discriminator entity, if legal, return the certificate authentication response packet to the discriminator entity.
Above-mentioned steps 4) if in local the access, then the certificate authentication response packet includes only a signature field; If the other places is inserted, then comprise two signature field, i.e. the signature of the identification requester entity discriminating service entities of trusting and the signature of the discriminating service entities that the discriminator entity is trusted.
Above-mentioned steps 6) comprises also that afterwards step 7) discriminator entity and identification requester entity calculate according to the other side's interim PKI and local temporary private respectively, generate consistent base key.
The present invention makes full use of the public credibility that trusted third party differentiates service entities, reduce roaming as far as possible and switch under the relatively poor discriminator entity of computing capability in the frequent environment and some typical application model the resource PKI calculation times of limited identification requester entity usually, redesign WAPI certificate authentication protocol and packet procssing flow thereof, the discriminator entity is no longer verified the signature that identification requester entity is done, identification requester entity does not need the signature that the discriminator entity is done is verified yet, the signature verification hand over of the two finishes for the stronger discriminating service entities of common computing capability, the every operation of agreement after promptly improving once, identification requester entity and discriminator entity only need be finished 1 signature and 1 signature verification respectively, and the discriminating service entities need be finished 1 signature (the local access) or 2 signatures (strange land access) and 4 signature verifications, differentiate on the basis of original fail safe having guaranteed the WAPI certificate, the operational efficiency of WAPI agreement is obviously improved, and power system capacity is improved.
Embodiment
The idiographic flow of WAPI certificate identification method of the present invention is as follows:
1) related or when being associated to the discriminator entity again when identification requester entity, the discriminator entity sends to identification requester entity and differentiates and activate grouping, and this discriminatings activates grouping and comprises and differentiate and identify;
2) after identification requester entity receives that discriminating activates grouping, send the access discrimination request grouping to the discriminator entity, this access discrimination request grouping comprises differentiates sign, the interim PKI of identification requester entity, the certificate of identification requester entity and the signature that identification requester entity utilizes long-term private that aforementioned all fields are done;
3) after the discriminator entity receives to insert discrimination request grouping, verify whether the discriminating sign that checking inserts in the discrimination request grouping is correct, if incorrect, then abandons this grouping; Otherwise, to differentiating that service entities sends the request of certificate authentication grouping, the request of certificate authentication grouping comprises the signature that the certificate of interim PKI, discriminator entity of signature that the certificate of the interim PKI of differentiating sign, identification requester entity, identification requester entity and identification requester entity utilize long-term private aforementioned all fields are done, discriminator entity and discriminator entity utilize long-term private that aforementioned all the elements and field are done;
4) after differentiating that service entities is received the request of certificate authentication grouping, whether the identity of checking discriminator entity and identification requester entity is legal, verifies that wherein whether legal the identity of discriminator entity and identification requester entity concrete steps as follows:
4.1) signature of checking discriminator entity and identification requester entity, if incorrect, then directly abandon this grouping; If correctly proceed to step 4.2);
4.2) checking discriminator entity and identification requester entity certificate and validity thereof, if illegal, then directly abandon this grouping or return the certificate authentication response packet to the discriminator entity, if legal, return the certificate authentication response packet to the discriminator entity.
Return the certificate authentication response packet to the discriminator entity then; The certificate authentication response packet comprises discriminating service entities that certificate verification result, identification requester entity and the discriminator entity of certificate verification result, the discriminator entity of interim PKI, the identification requester entity of the interim PKI of differentiating sign, identification requester entity, discriminator entity the trusted signature to aforementioned field; If local the access, then the certificate authentication response packet includes only a signature field; If the other places is inserted, then comprise two signature field, i.e. the signature of the identification requester entity discriminating service entities of trusting and the signature of the discriminating service entities that the discriminator entity is trusted.
5) after the discriminator entity is received the certificate authentication response packet, verify; Whether the signature of checking discriminating sign, the interim PKI of discriminator entity and the discriminating service entities that the discriminator entity is trusted wherein is correct, if incorrect, then abandons this grouping; If correctly, obtain the interim PKI of the certificate verification result and the identification requester entity of identification requester entity, return the access authentication response packet to identification requester entity, it is identical with the content of certificate authentication response packet to insert authentication response packet;
6) after identification requester entity receives to insert authentication response packet, verify; Whether the signature of checking discriminating sign, the interim PKI of identification requester entity and the discriminating service entities that identification requester entity is trusted wherein is correct, if incorrect, then abandons this grouping; If correct, obtain the certificate verification result of discriminator entity and the interim PKI of discriminator entity;
7) discriminator entity and identification requester entity are calculated with local temporary private according to the other side's interim PKI respectively, generate consistent base key.
Under laboratory environment, carry out the actual product test:
Identification requester entity is the IBM notebook that is inserted with the PCMCIA network interface card, and the operating system of operation is Windows2000, in save as 512M, realize by ECDSA192 software, sign and verify consuming time be respectively 2.55s/1000 time with 14.11s/1000 time; The discriminator entity operates on the platform Xscale, and operating system is linux 2.4.31, and CPU frequency is 533MHz, realizes by ECDSA192 software, sign and verify consuming time be respectively 7.42s/1000 time with 35.15s/1000 time; Differentiate that service entities is the SUN server, ECDSA192 adopts hardware encryption chip to realize, sign and verify consuming time be respectively 1.67s/1000 time with 2.85s/1000 time.Measured result is as shown in table 1.
The measured result of table 1 operation
1000 operations (s) consuming time Can finish the number of users (individual) of discriminating in the 1s The design maximum capacity (individual) of system
Original method 115.86 8.63 25.89
The inventive method 72.3 13.8 41.4
As seen, the WAPI certificate identification method after the present invention improves, operational efficiency is obviously improved, and power system capacity is improved, and overall performance improves obviously.

Claims (4)

1, a kind of WAPI certificate identification method, it is characterized in that: this method may further comprise the steps:
1) related or when being associated to the discriminator entity again when identification requester entity, the discriminator entity sends to identification requester entity and differentiates and activate grouping, and this discriminatings activates grouping and comprises and differentiate and identify;
2) after identification requester entity receives that discriminating activates grouping, send the access discrimination request grouping to the discriminator entity, this access discrimination request grouping comprises differentiates sign, the interim PKI of identification requester entity, the certificate of identification requester entity and the signature that identification requester entity utilizes long-term private that aforementioned all fields are done;
3) after the discriminator entity receives to insert discrimination request grouping, verify whether the discriminating sign that checking inserts in the discrimination request grouping is correct, if incorrect, then abandons this grouping; Otherwise, to differentiating that service entities sends the request of certificate authentication grouping, the request of certificate authentication grouping comprises the signature that the certificate of interim PKI, discriminator entity of signature that the certificate of the interim PKI of differentiating sign, identification requester entity, identification requester entity and identification requester entity utilize long-term private aforementioned all fields are done, discriminator entity and discriminator entity utilize long-term private that aforementioned all the elements and field are done;
4) after differentiating that service entities is received the request of certificate authentication grouping, whether the identity of checking discriminator entity and identification requester entity is legal, returns the certificate authentication response packet to the discriminator entity then; The certificate authentication response packet comprises discriminating service entities that certificate verification result, identification requester entity and the discriminator entity of certificate verification result, the discriminator entity of interim PKI, the identification requester entity of the interim PKI of differentiating sign, identification requester entity, discriminator entity the trusted signature to aforementioned field;
5) after the discriminator entity is received the certificate authentication response packet, verify; Whether the signature of checking discriminating sign, the interim PKI of discriminator entity and the discriminating service entities that the discriminator entity is trusted wherein is correct, if incorrect, then abandons this grouping; If correctly, obtain the interim PKI of the certificate verification result and the identification requester entity of identification requester entity, return the access authentication response packet to identification requester entity, it is identical with the content of certificate authentication response packet to insert authentication response packet;
6) after identification requester entity receives to insert authentication response packet, verify; Whether the signature of checking discriminating sign, the interim PKI of identification requester entity and the discriminating service entities that identification requester entity is trusted wherein is correct, if incorrect, then abandons this grouping; If correct, obtain the certificate verification result of discriminator entity and the interim PKI of discriminator entity.
2, WAPI certificate identification method according to claim 1 is characterized in that: whether legal the identity of checking discriminator entity and identification requester entity concrete steps as follows in the described step 4);
4.1) signature of checking discriminator entity and identification requester entity, if incorrect, then directly abandon this grouping; If correctly proceed to step 4.2);
4.2) checking discriminator entity and identification requester entity certificate and validity thereof, if illegal, then directly abandon this grouping or return the certificate authentication response packet to the discriminator entity, if legal, return the certificate authentication response packet to the discriminator entity.
3, WAPI certificate identification method according to claim 1 and 2 is characterized in that: if local access the in the described step 4), then the certificate authentication response packet includes only a signature field; If the other places is inserted, then comprise two signature field, i.e. the signature of the identification requester entity discriminating service entities of trusting and the signature of the discriminating service entities that the discriminator entity is trusted.
4, WAPI certificate identification method according to claim 1, it is characterized in that: also comprise that step 7) discriminator entity and identification requester entity calculate with local temporary private according to the other side's interim PKI respectively after the described step 6), generate consistent base key.
CNB2007100188858A 2007-10-16 2007-10-16 WAPI certificate identification method Active CN100512112C (en)

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Contract record no.: X2022610000005

Denomination of invention: A WAPI certificate authentication method

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License type: Common License

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Assignee: HISCENE INFORMATION TECHNOLOGY Co.,Ltd.

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Contract record no.: X2023610000003

Denomination of invention: A WAPI certificate authentication method

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License type: Common License

Record date: 20230207

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Assignee: Beijing baicaibang Technology Co.,Ltd.

Assignor: CHINA IWNCOMM Co.,Ltd.

Contract record no.: X2023610000005

Denomination of invention: A WAPI certificate authentication method

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License type: Common License

Record date: 20230329

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Assignee: Shenzhen wisky Technology Co.,Ltd.

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Contract record no.: X2023610000008

Denomination of invention: A WAPI certificate authentication method

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License type: Common License

Record date: 20230522

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Assignee: Beijing Digital Technology (Shanghai) Co.,Ltd.

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Contract record no.: X2023610000012

Denomination of invention: A WAPI certificate authentication method

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License type: Common License

Record date: 20231114