CN103714637B - A kind of transmission security key sending method and system, operating terminal - Google Patents

A kind of transmission security key sending method and system, operating terminal Download PDF

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Publication number
CN103714637B
CN103714637B CN201310740380.8A CN201310740380A CN103714637B CN 103714637 B CN103714637 B CN 103714637B CN 201310740380 A CN201310740380 A CN 201310740380A CN 103714637 B CN103714637 B CN 103714637B
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data
wcrt
sign
key
pack
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CN103714637A (en
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洪逸轩
苏文龙
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Fujian Landi Commercial Equipment Co Ltd
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Fujian Landi Commercial Equipment Co Ltd
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Priority claimed from CN2013100846716A external-priority patent/CN103220270A/en
Priority claimed from CN2013100846538A external-priority patent/CN103237005A/en
Priority claimed from CN2013100846735A external-priority patent/CN103220271A/en
Priority claimed from CN2013100843972A external-priority patent/CN103237004A/en
Application filed by Fujian Landi Commercial Equipment Co Ltd filed Critical Fujian Landi Commercial Equipment Co Ltd
Priority to CN201310740380.8A priority Critical patent/CN103714637B/en
Publication of CN103714637A publication Critical patent/CN103714637A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/321—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving a third party or a trusted authority
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/08—Payment architectures
    • G06Q20/20—Point-of-sale [POS] network systems
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/38—Payment protocols; Details thereof
    • G06Q20/382—Payment protocols; Details thereof insuring higher security of transaction
    • G06Q20/3829—Payment protocols; Details thereof insuring higher security of transaction involving key management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/06—Network architectures or network communication protocols for network security for supporting key management in a packet data network
    • H04L63/061—Network architectures or network communication protocols for network security for supporting key management in a packet data network for key exchange, e.g. in peer-to-peer networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
    • H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
    • H04L9/0825—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) using asymmetric-key encryption or public key infrastructure [PKI], e.g. key signature or public key certificates
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
    • H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
    • H04L9/083—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP]

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Business, Economics & Management (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Accounting & Taxation (AREA)
  • General Business, Economics & Management (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Finance (AREA)
  • Strategic Management (AREA)
  • Physics & Mathematics (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Storage Device Security (AREA)
  • Cash Registers Or Receiving Machines (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
  • Computer And Data Communications (AREA)
  • Small-Scale Networks (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The present invention discloses a kind of transmission security key sending method and system, and the method comprising the steps of: operating terminal gathers TK from POS terminal; Operating terminal carries out packing to TK and generates packing data Pack; Operating terminal use work certificate WCRT corresponding private key WCRT_prk signs to Pack and signature time Time_sign and encloses WCRT; Cryptographic hash Hash1 is calculated to Pack and Time_sign; After using the corresponding WCRT_prk of WCRT to be sent to server to Hash1 encryption generating ciphertext C_sign, checking WCRT legitimacy; Verify that legal rear extraction PKI WCRT_pu is decrypted ciphertext C_sign, obtain expressly Hash2; Pack and Time_sign is calculated and generates cryptographic hash Hash3; Contrast Hash2 and Hash3, if consistent decision data is not distorted, otherwise decision data is distorted.

Description

A kind of transmission security key sending method and system, operating terminal
Technical field
The present invention relates to E-Payment field, particularly relate to a kind of transmission security key sending method and system, operating terminal.
Background technology
Bank card (BANKCard) is more and more universal as the means of payment, common bank card paying system comprises point of sales terminal (PointOfSale, POS), POS receives single system (POSP), code keypad (PINPAD) and hardware encipher machine (HardwareandSecurityModule, HSM).Wherein POS terminal can accept bank card information, has communication function, and the equipment that the instruction accepting teller completes financial transaction information and exchanges for information about; POS receives single system and manages concentratedly POS terminal, comprises parameter downloads, and key is downloaded, and accepts, processes or forward the transaction request of POS terminal, and to POS terminal loopback transaction results information, is the system of centralized management and transaction processing; Code keypad (PINPAD) is that the key relevant to various financial transaction carries out safe storage protection, and is encrypted the safety equipment of protection to PIN; Hardware encipher machine (HSM) is the peripheral hardware devices be encrypted transmission data, for the encryption and decryption of PIN, the correctness verifying message and document source and storage key.Personal identification code (PersonalIdentificationNumber, PIN), i.e. personal identification number are the data messages identifying holder's identity legitimacy in on-line transaction, and in cyber-net system, any link does not allow to occur in mode expressly; Terminal master key (TerminalMasterKey, TMK), during POS terminal work, to the master key that working key is encrypted, encrypting storing is in system database; POS terminal is widely used in bank card and pays occasion, and such as manufacturer's shopping, hotel accommodations etc. are a kind of indispensable modernization means of payment, has incorporated the various occasions of people's life.Bank card; particularly debit card; generally all be provided with PIN by holder; carrying out in payment process; POS terminal is except above sending the data such as the magnetic track information of bank card; also want holder to input the identity legitimacy of PIN for issuing bank checking holder, guarantee bank card safety of payment, the property safety of protection holder.Reveal to prevent PIN or be cracked; require from terminal to issuing bank in whole information interactive process; whole process carries out safety encipher protection to PIN; do not allow any link in computer network system; PIN occurs in mode expressly, and the POS terminal therefore accepting input PIN at present all requires to be equipped with key management system.
The key code system of POS terminal is divided into secondary: terminal master key (TMK) and working key (WK).Wherein TMK is in WK renewal process, is encrypted protection to WK.Share unique TMK between every platform POS terminal and POS, must have safeguard protection, guarantee can only write device participate in calculating, and can not read; TMK is a very crucial root key, if TMK is intercepted, working key is just cracked than being easier to, by serious threat bank card safety of payment.So can secure download TMK to POS terminal, become the key of whole POS terminal security.Conclude existing TMK download scenarios below as follows:
1, the female POS scheme of key: user receives the single system hardware encipher machine traffic encryption key the same with key female POS input at POS.POS terminal receives single system initiating terminal master key download request by the female POS of key to POS, POS receives single system and drives hardware encipher machine stochastic generation terminal master key, and by traffic encryption key encrypted transmission to the female POS of key, POS terminal is transferred to again after the female POS traffic encryption key deciphering of key, POS terminal obtains terminal master key expressly, be saved in POS terminal code keypad, thus realize POS terminal and POS and receive the synchronous of terminal master key between single system.
2, IC-card decrypt scheme: user injects the same traffic encryption key in POS receipts single system hardware encipher machine with IC-card.IC-card is inserted POS terminal by user, POS terminal receives single system initiating terminal master key download request to POS, POS receives single system and drives hardware encipher machine stochastic generation terminal master key, and by traffic encryption key encrypted transmission to POS terminal, traffic encryption key decryption terminal master key ciphertext in POS terminal IC-card, obtain terminal master key expressly, be saved in POS terminal code keypad, thus realize POS terminal and POS and receive the synchronous of terminal master key between single system.
Above-mentioned two schemes has following shortcoming: terminal master key expressly appears at outside safety equipment, and for taking precautions against Key Exposure risk, the download of terminal master key must control to carry out at the safe machine room of administrative center, by manually concentrating download terminal master key.Thus bring that " maintenance centre's machine room workload is large; Need to be transported to administrative center's safe machine room download key after equipment dispatches from the factory and just can be deployed to trade company, transportation cost rises; In order to concentrate under fill key, need a large amount of staff and working time, maintenance cost is large, maintenance period is long " etc. problem.
Summary of the invention
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is:
A kind of transmission security key sending method is provided, comprises step: operating terminal collects transmission security key TK from POS terminal; Operating terminal carries out packing to transmission security key TK and generates packing data Pack, packing data Pack comprises the public key certificate sequence number Serial_pu of version number Ver_pack, POS terminal sequence number SN, encryption TK data, TK data parameters Para_tk, TK data ciphertext C_tk; Operating terminal is sent to server after being signed by packing data.
Wherein, described " operating terminal carries out packing to transmission security key TK and generates packing data Pack " specifically comprises step:
According to different pieces of information curriculum offering difference bag version number Ver_pack;
POS terminal sequence number SN is obtained from the POS terminal producing transmission security key TK;
At least one TK data ciphertext C_tk that generation and the encryption that uses public-key generate POS terminal is obtained from the POS terminal producing transmission security key TK;
The TK data parameters Para_tk comprising the version of TK, the algorithm types of the use of TK, length parameter and TK data ciphertext number is obtained from the POS terminal producing transmission security key TK.
Wherein, described " operating terminal is sent to server after being signed by packing data " specifically comprises step:
Operating terminal use work certificate WCRT corresponding private key WCRT_prk, carries out signature operation to packing data Pack and signature time Time_sign entirety, and encloses the legal work certificate WCRT of server authentication.
Wherein, described signature operation specifically comprises step: calculate cryptographic hash Hash1 to packing data Pack and signature time Time_sign; Use work certificate corresponding private key WCRT_prk encrypts generating ciphertext C_sign to cryptographic hash Hash1, and this ciphertext is signed data C_sign.
Wherein, described signature operation also comprises step:
After server receives the packing data of signature, the legitimacy of checking work certificate WCRT;
Verify legal after, extract PKI WCRT_pu from work certificate WCRT, the signature C_sign decrypt data that the WCRT_pu that uses public-key generates packing data Pack and signature time Time_sign, obtain expressly Hash2;
Hash is calculated to packing data Pack and signature time Time_sign, generates cryptographic hash Hash3;
Whether Hash2 with Hash3 be consistent in contrast, if consistent decision data is not distorted, if inconsistent, decision data is distorted.
Another technical solution used in the present invention is:
A kind of operating terminal is provided, comprises:
TK acquisition module, for collecting transmission security key TK from POS terminal;
Packetization module, packing data Pack is generated for carrying out packing to transmission security key TK, packing data Pack comprises the public key certificate sequence number Serial_pu of version number Ver_pack, POS terminal sequence number SN, encryption TK data, TK data parameters Para_tk, TK data ciphertext C_tk; And
Signature blocks, is sent to server after being signed by packing data.
Wherein, described packetization module comprises:
Module is set, for wrapping version number Ver_pack according to different pieces of information curriculum offering difference;
First extraction module, for extracting POS terminal sequence number SN in the POS terminal from generation transmission security key TK;
Second extraction module, for being extracted in POS terminal at least one TK data ciphertext C_tk that the encryption that generates and use public-key generates in the POS terminal from generation transmission security key TK; And
3rd extraction module, for extracting the TK data parameters Para_tk comprising the version of TK, the algorithm types of the use of TK, length parameter and TK data ciphertext number from the POS terminal producing transmission security key TK.
Wherein, described signature blocks, specifically for operating terminal use work certificate WCRT corresponding private key WCRT_prk, is carried out signature operation to packing data Pack and signature time Time_sign entirety, and is enclosed the legal work certificate WCRT of server authentication.
Wherein, described signature blocks specifically comprises:
First computing module, for calculating cryptographic hash Hash1 to packing data Pack and signature time Time_sign; And
Encrypting module, for using work certificate corresponding private key WCRT_prk to cryptographic hash Hash1 generating ciphertext C_sign, this ciphertext is signed data C_sign.
Another technical solution used in the present invention is:
A kind of transmission security key transmitting system, the server comprising at least one operating terminal and communicate to connect with operating terminal, described operating terminal is described above, described server comprises: server identity correction verification module, for receive signature when server packing data after, the legitimacy of checking work certificate WCRT; Deciphering module, for after the checking of server identity correction verification module is legal, extract PKI WCRT_pu from work certificate WCRT, the WCRT_pu that uses public-key is decrypted the signed data C_sign that packing data Pack and signature time Time_sign generates, and obtains expressly Hash2; Second computing module, for calculating Hash to packing data Pack and signature time Time_sign, generates cryptographic hash Hash3; And determination module, whether consistent for contrasting Hash2 with Hash3, if consistent decision data is not distorted, if inconsistent, decision data is distorted.
A kind of transmission security key sending method of the present invention and system, operating terminal, generate packing data by transmission security key TK is packed and be sent to server after carrying out signature operation, server carries out authentication determination again, confirm that transmission data are not tampered, what achieve transmission security key TK safety transfers to server from POS terminal collection.Avoid transmission security key TK to be distorted by intercepting in transmitting procedure, and then ensure that the master key that equipment end can not be tampered from the download of Server remote safety.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of a kind of operating terminal in an embodiment of the present invention;
Fig. 2 is the functional block diagram of packetization module in Fig. 1;
Fig. 3 is the functional block diagram of signature blocks in Fig. 1;
Fig. 4 is the system chart of a kind of transmission security key transmitting system in an embodiment of the present invention;
Fig. 5 is the process flow diagram of a kind of transmission security key sending method in an embodiment of the present invention;
Fig. 6 is flowchart transmission security key packing being generated packing data;
Fig. 7 is the concrete flowchart being sent to server after packing data is signed by operating terminal;
Fig. 8 is another implementation method process flow diagram of transmission security key sending method described in Fig. 7.
Main element symbol description
Operating terminal 1; TK acquisition module 10; Packetization module 20; Signature blocks 30;
Module 21 is set; First extraction module 22; Second extraction module 23; 3rd extraction module 24;
First computing module 31; Encrypting module 32; Server identity correction verification module 40;
Deciphering module 50; Second computing module 60; Determination module 70.
Embodiment
By describing technology contents of the present invention, structural attitude in detail, realized object and effect, accompanying drawing is coordinated to be explained in detail below in conjunction with embodiment.
For solving the technical matters existed in background technology, the present invention adopts a kind of new master key download scenarios, TK(TransmissionKey is produced at random by POS terminal, transmission security key), TK after producing is stored in the code keypad of POS terminal, and TK is sent to KMS(KeyManagementSystem, key management system, for office terminal master key TMK by transmission mode required under various application scenarios) in.
As POS terminal application download terminal master key TMK, KMS system uses TK ciphering terminal master key TMK, and the terminal master key ciphertext after encryption is sent to POS terminal, POS terminal is decrypted master key ciphertext with TK after receiving, obtain terminal master key TMK, and terminal master key TMK is kept in code keypad.
So, by TK ciphering terminal master key TMK, enable TMK carry out remote transmission, facilitate the secure download of TMK.In some scenarios, operating terminal is adopted to gather the TK of POS terminal generation, and be responsible for TK being transferred to MTMS system (MaterialTrackingManagementSystem by operating terminal, Tracing Material system, mainly use in plant produced), TK is managed by MTMS systematic unity, and TK is sent to corresponding KMS system, MTMS system and KMS system produce arranging key respectively by the first hardware encipher machine and the second hardware encipher machine, and MTMS system and KMS system through consultation key carry out transmission and the certification of data.Described course of conveying is by CA center (CertificateAuthority, certificate authority, adopt PublicKeyInfrastructure public key infrastructure technology, network ID authentication service is provided specially, be responsible for signing and issuing and managing digital certificate, and there is third party's trust authority that is authoritative and fairness) differentiate the identity of operating terminal, MTMS system and KMS system.Adopt the rights management that operating terminal collection TK can facilitate the acquisition operations of TK (can realize a key collection etc.) and TK to gather; Adopt MTMS system conveniently to TK unified management, data search and the download of POS terminal during after-sales service later can be facilitated, can realize, by manufacture order bulk transfer TK, facilitating the transfer management of TK by MTMS system, prevent TK from misinformating to the object of mistake; Introducing CA center can prevent pseudo-terminal and pseudo-KMS system from stealing TK.Above by being sent to bank's end after POS terminal collect and transmit cipher key T K, TMK is encrypted, then the transmission security of TMK can be ensured by the method for the TMK of POS terminal remote download after TK encryption.
The TK of POS terminal generation is gathered at described employing operating terminal, and be responsible for TK to be transferred to MTMS system by operating terminal, managed in the scheme of TK by MTMS systematic unity, because operating terminal needs support terminal master key remote download function, need to ensure transmission security key TK data to be transferred to server from operating terminal safely, confirm after server carries out again authentication determination that transmission data are not tampered, change the unified KT significantly reducing KMS system that uploads of third party into by the scattered TK of uploading of original POS terminal and receive work load.Given this, the technical scheme of solution is provided for this problem below.
Referring to Fig. 1, is the structured flowchart of a kind of operating terminal in one embodiment of the present invention.This operating terminal comprises TK acquisition module 10, packetization module 20 and signature blocks 30.Comprise private key and corresponding operating terminal certificate in described operating terminal 1, described TK acquisition module 10 collects transmission security key TK for operating terminal from POS terminal; Described packetization module 20 carries out packing process for operating terminal to transmission security key TK, generate packing data Pack, wherein, packing data Pack comprises the public key certificate sequence number Serial_pu of version number Ver_pack, POS terminal sequence number SN, encryption TK data, TK data parameters Para_tk, TK data ciphertext C_tk; Described signature blocks 30 is sent to server after being signed by packing data Pack for operating terminal.Described POS terminal sequence number SN, for afterwards by this packing data, issues concrete terminal device; Which public key decryptions the PKI sequence number of described encryption TK data, use for determining afterwards; Described server is the Tracing Material system MTMS of POS terminal, described packing data also can comprise multiple TK parameter, multiple TK data and packing data rise time, described multiple TK parameter is for representing different TK forms, and when the described rise time completes packing for reviewing these data and transmit.
Referring to Fig. 2, is the functional block diagram of packetization module in Fig. 1.Packetization module 20 comprises and arranges module 21, first extraction module 22, second extraction module 23 and the 3rd extraction module 24.Described first extraction module 22 is for extracting the sequence number SN of POS terminal in the POS terminal from generation transmission security key TK; At least one TK data ciphertext C_tk that described second extraction module 23 generates for being extracted in POS terminal the encryption that generates and use public-key in the POS terminal from generation transmission security key TK; Described 3rd extraction module 24 comprises the TK data parameters Para_tk of the version of TK, the algorithm types of the use of TK, length parameter and TK data ciphertext number for extracting from the POS terminal producing transmission security key TK.
Referring to Fig. 3, is the functional block diagram of signature blocks in Fig. 1.Described signature blocks 30, specifically for using work certificate WCRT corresponding private key WCRT_prk, is carried out signature operation to packing data Pack and signature time Time_sign entirety, and is enclosed the legal work certificate WCRT of server authentication.
Signature blocks 30 comprises the first computing module 31 and encrypting module 32.Described first computing module 31 carries out calculating cryptographic hash Hash1 for the signature time Time_sign of the packing data Pack that generates packetization module 20 and packing data Pack; Encrypting module 32 encrypts generating ciphertext C_sign for using corresponding private key WCRT_prk in work certificate to the cryptographic hash Hash1 that described first computing module calculates, and this ciphertext is signed data C_sign, after signature terminates, signed data is sent to server.
Refer to Fig. 4, it is the system chart of a kind of transmission security key transmitting system in an embodiment of the present invention, this transmission security key transmitting system comprises operating terminal described at least one, also comprise the server communicated to connect with operating terminal, described server comprises: server identity correction verification module 40, deciphering module 50, second computing module 60 and determination module 70.Wherein, described server identity correction verification module 40 for after the packing data that receives signature when server and signed data C_sign, the legitimacy of the certificate WCRT that works in certifying signature data; Described deciphering module 50, for when checking work certificate WCRT legal after, from work certificate WCRT, extract PKI WCRT_pu, the WCRT_pu that uses public-key is decrypted the signed data C_sign that packing data Pack and signature time Time_sign generates, and obtains expressly Hash2; Described second computing module 60, for calculating Hash to packing data Pack and signature time Time_sign, generates cryptographic hash Hash3; Whether described determination module 70 is consistent with Hash3 for contrasting cryptographic hash Hash2, then judges that transmission security key TK data are not tampered if consistent, if inconsistent, then judges that transmission security key TK Data Data is distorted.
Referring to Fig. 5, is the process flow diagram of a kind of transmission security key sending method in one embodiment of the present invention.The method comprises:
Step S101, operating terminal collect transmission security key TK from POS terminal;
Step S201, operating terminal carry out packing to transmission security key TK and generate packing data Pack, packing data Pack comprises the public key certificate sequence number Serial_pu of version number Ver_pack, POS terminal sequence number SN, encryption TK data, TK data parameters Para_tk, TK data ciphertext C_tk; Described POS terminal sequence number SN, for afterwards by this packing data, issues concrete terminal device; Which public key decryptions the PKI sequence number of described encryption TK data, use for determining afterwards; Described packing data also can comprise multiple TK parameter, multiple TK data, the version number of encrypted transmission cipher key T K and packing data rise time, described multiple TK parameter is for representing different TK forms, the version number of described encrypted transmission cipher key T K, described version number, selects corresponding version number to upgrade for during system upgrade afterwards.It is when complete packing and transmit that the described rise time is used for reviewing these data.
Step S301, operating terminal are sent to server after being signed by packing data Pack.
Referring to Fig. 6, is flowchart transmission security key packing being generated packing data.The method comprises:
Step S201, according to different pieces of information curriculum offering difference bag version number Ver_pack;
Step S202, obtain POS terminal sequence number SN from the POS terminal producing transmission security key TK;
Step S203, to obtain from the POS terminal producing transmission security key TK and to generate POS terminal and at least one TK data ciphertext C_tk that the encryption that uses public-key generates;
Step S204, obtain the TK data parameters Para_tk comprising the version of TK, the algorithm types of the use of TK, length parameter and TK data ciphertext number from the POS terminal producing transmission security key TK;
Referring to Fig. 7, is the concrete flowchart being sent to server after packing data is signed by operating terminal.Described " operating terminal is sent to server after being signed by packing data " specifically comprises step:
The private key WCRT_prk that step S301, operating terminal use work certificate WCRT are corresponding carries out signature operation to packing data Pack and signature time Time_sign entirety, and encloses the legal work certificate WCRT of server authentication;
Step S302, be sent to server.
In Fig. 7, operating terminal is sent to server after being signed by packing data, and its signature operation specifically comprises:
Cryptographic hash Hash1 is calculated to packing data Pack and signature time Time_sign; Use work certificate corresponding private key WCRT_prk encrypts generating ciphertext C_sign to cryptographic hash Hash1, and this ciphertext is signed data C_sign.
Refer to Fig. 8, a kind of transmission security key sending method also comprises:
After step S401, the packing data receiving signature when server and signed data C_sign, the legitimacy of the certificate WCRT that works in certifying signature data;
Step S501, when checking work certificate WCRT legal after, PKI WCRT_pu is extracted from work certificate WCRT, the WCRT_pu that uses public-key is decrypted the signed data C_sign that packing data Pack and signature time Time_sign generates, and obtains expressly Hash2;
Step S601, to packing data Pack and signature time Time_sign calculate Hash, generate cryptographic hash Hash3;
Whether cryptographic hash Hash2 is consistent with Hash3 for step S701, contrast, then performs step S703, judges that transmission security key TK data are not tampered if consistent, if inconsistent, then perform step S702 and judges that transmission security key TK Data Data is distorted.
A kind of transmission security key sending method of the present invention and system, operating terminal, generate packing data by transmission security key TK is packed and be sent to server after carrying out signature operation, server carries out authentication determination again, confirm that transmission data are not tampered, what achieve transmission security key TK safety transfers to server from POS terminal collection.Not only avoid transmission security key TK to be distorted by intercepting in transmitting procedure, and ensure that the master key that equipment end can not be tampered from the download of Server remote safety.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.

Claims (8)

1. a transmission security key sending method, is characterized in that, comprises step:
Operating terminal is from POS terminal collect and transmit cipher key T K;
Operating terminal carries out packing to transmission security key TK and generates packing data Pack, packing data Pack comprises the public key certificate sequence number Serial_pu of version number Ver_pack, POS terminal sequence number SN, encryption TK data, TK data parameters Para_tk, TK data ciphertext C_tk;
Operating terminal is sent to server after being signed by packing data;
Wherein said " operating terminal carries out packing to transmission security key TK and generates packing data Pack " specifically comprises step:
According to different pieces of information curriculum offering difference bag version number Ver_pack;
POS terminal sequence number SN is obtained from the POS terminal producing transmission security key TK;
At least one TK data ciphertext C_tk that generation and the encryption that uses public-key generate POS terminal is obtained from the POS terminal producing transmission security key TK;
The TK data parameters Para_tk comprising the version of TK, the algorithm types of the use of TK, length parameter and TK data ciphertext number is obtained from the POS terminal producing transmission security key TK.
2. a kind of transmission security key sending method according to claim 1, is characterized in that, described " operating terminal is sent to server after being signed by packing data " specifically comprises step:
Operating terminal use work certificate WCRT corresponding private key WCRT_prk, carries out signature operation to packing data Pack and signature time Time_sign entirety, and encloses the legal work certificate WCRT of server authentication.
3. a kind of transmission security key sending method according to claim 2, it is characterized in that, described signature operation specifically comprises step:
Cryptographic hash Hash1 is calculated to packing data Pack and signature time Time_sign;
Use work certificate corresponding private key WCRT_prk encrypts generating ciphertext C_sign to cryptographic hash Hash1, and this ciphertext is signed data C_sign.
4. a kind of transmission security key sending method according to claim 3, is characterized in that, also comprise step:
After server receives the packing data of signature, the legitimacy of checking work certificate WCRT;
Verify legal after, extract PKI WCRT_pu from work certificate WCRT, the signature C_sign decrypt data that the WCRT_pu that uses public-key generates packing data Pack and signature time Time_sign, obtain expressly Hash2;
Hash is calculated to packing data Pack and signature time Time_sign, generates cryptographic hash Hash3;
Whether Hash2 with Hash3 be consistent in contrast, if consistent decision data is not distorted, if inconsistent, decision data is distorted.
5. an operating terminal, is characterized in that, comprising:
TK acquisition module, for from POS terminal collect and transmit cipher key T K;
Packetization module, packing data Pack is generated for carrying out packing to transmission security key TK, packing data Pack comprises the public key certificate sequence number Serial_pu of version number Ver_pack, POS terminal sequence number SN, encryption TK data, TK data parameters Para_tk, TK data ciphertext C_tk; And
Signature blocks, is sent to server after being signed by packing data;
Wherein said packetization module comprises:
Module is set, for wrapping version number Ver_pack according to different pieces of information curriculum offering difference;
First extraction module, for extracting POS terminal sequence number SN in the POS terminal from generation transmission security key TK;
Second extraction module, for being extracted in POS terminal at least one TK data ciphertext C_tk that the encryption that generates and use public-key generates in the POS terminal from generation transmission security key TK; And
3rd extraction module, for extracting the TK data parameters Para_tk comprising the version of TK, the algorithm types of the use of TK, length parameter and TK data ciphertext number from the POS terminal producing transmission security key TK.
6. a kind of operating terminal according to claim 5, it is characterized in that, described signature blocks is specifically for operating terminal use work certificate WCRT corresponding private key WCRT_prk, signature operation is carried out to packing data Pack and signature time Time_sign entirety, and encloses the legal work certificate WCRT of server authentication.
7. a kind of operating terminal according to claim 6, is characterized in that, described signature blocks specifically comprises:
First computing module, for calculating cryptographic hash Hash1 to packing data Pack and signature time Time_sign; And
Encrypting module, for using work certificate corresponding private key WCRT_prk to cryptographic hash Hash1 generating ciphertext C_sign, this ciphertext is signed data C_sign.
8. a transmission security key transmitting system, is characterized in that, the server comprising at least one operating terminal and communicate to connect with operating terminal, and described operating terminal is as described in claim 5-7 any one, and described server comprises:
Server identity correction verification module, for receive signature when server packing data after, the legitimacy of checking work certificate WCRT;
Deciphering module, for after the checking of server identity correction verification module is legal, extract PKI WCRT_pu from work certificate WCRT, the WCRT_pu that uses public-key is decrypted the signed data C_sign that packing data Pack and signature time Time_sign generates, and obtains expressly Hash2;
Second computing module, for calculating Hash to packing data Pack and signature time Time_sign, generates cryptographic hash Hash3; And
Determination module, whether consistent for contrasting Hash2 with Hash3, if consistent decision data is not distorted, if inconsistent, decision data is distorted.
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CN201310740308.5A Active CN103729941B (en) 2013-03-15 2013-12-27 A kind of main cipher key T MK method for safely downloading of terminal and system
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CN201310740285.8A Active CN103729940B (en) 2013-03-15 2013-12-27 A kind of main cipher key T MK method for safely downloading of terminal and system
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