CN103716154A - Security downloading method and system of TMK - Google Patents

Security downloading method and system of TMK Download PDF

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Publication number
CN103716154A
CN103716154A CN201310740540.9A CN201310740540A CN103716154A CN 103716154 A CN103716154 A CN 103716154A CN 201310740540 A CN201310740540 A CN 201310740540A CN 103716154 A CN103716154 A CN 103716154A
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kms
key
random number
pos terminal
tmk
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CN103716154B (en
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苏文龙
孟陆强
姚承勇
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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 CN2013100846735A external-priority patent/CN103220271A/en
Priority claimed from CN2013100843972A external-priority patent/CN103237004A/en
Priority claimed from CN2013100846538A external-priority patent/CN103237005A/en
Application filed by Fujian Landi Commercial Equipment Co Ltd filed Critical Fujian Landi Commercial Equipment Co Ltd
Priority to CN201310740540.9A priority Critical patent/CN103716154B/en
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    • 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
    • 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
    • G06Q20/38—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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  • Computer Security & Cryptography (AREA)
  • Business, Economics & Management (AREA)
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  • Theoretical Computer Science (AREA)
  • Computing Systems (AREA)
  • Computer Hardware Design (AREA)
  • General Engineering & Computer Science (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)
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Abstract

The invention discloses a security downloading method of a TMK. The security downloading method comprises the steps that a POS terminal produces a TK by calling a PIN pad, and the TK comprises an asymmetric TEK and an asymmetric AUK; the POS terminal is used for sending a public key Pu_tek of the TEK and a public key Pu_auk of the AUK to a KMS; the POS terminal and the KMS use the symmetric AUK for conducting bidirectional authentication; if the POS terminal and the KMS pass through the authentication, the KMS calls a hardware and security module, the public key Pu_tek of the TEK is used for encrypting the TMK to generate master key ciphertext Ctmk_tk, and the master key ciphertext Ctmk_tk is sent to the POS terminal; the POS terminal calls the PIN pad, a private key Pr_tek of the TEK is used for decrypting the master key ciphertext Ctmk_tk to obtain the TMK, and the TMK is stored in the PIN pad. The security downloading method and system of the TMK have the advantages that the TMK is encrypted by adopting the asymmetric TK, the TMK is downloaded remotely by the POS terminal, and the asymmetric TK guarantees transmission security of the TMK.

Description

A kind of terminal master key TMK method for safely downloading and system
Technical field
The present invention relates to E-Payment field, relate in particular to a kind of terminal master key TMK method for safely downloading and system.
Background technology
(BANK Card) is more and more universal as the means of payment for bank card, common bank card paying system comprises point of sales terminal (Point Of Sale, POS), POS receives single system (POSP), code keypad (PIN PAD) and hardware encipher machine (Hardware and Security Module, HSM).Wherein POS terminal can be accepted bank card information, has communication function, and the instruction of accepting teller completes financial transaction information and the equipment of exchange for information about; POS receives single system POS terminal is managed concentratedly, 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 trading processing; Code keypad (PIN PAD) is that the relevant key of various financial transactions is carried out to safe storage protection, and the safety means that PIN are encrypted to protection; Hardware encipher machine (HSM) is to the peripheral hardware equipment that is encrypted of transmission data, for correctness and the storage key of encryption and decryption, checking message and the document source of PIN.Personal identification code (Personal Identification Number, PIN), personal identification number, is the data message of identifying holder's identity legitimacy in on-line transaction, in cyber-net system, any link does not allow to occur in mode expressly; Terminal master key (Terminal Master Key, TMK), during POS terminal works, 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, such as manufacturer's shopping, hotel's lodging etc., is a kind of indispensable modernization means of payment, has incorporated the various occasions of people's life.Bank card; debit card particularly; generally all by holder, be provided with PIN; in carrying out payment process; POS terminal is except above sending the data such as magnetic track information of bank card; also want holder to input the checking holder's of PINGong issuing bank identity legitimacy, guarantee bank card safety of payment, protection holder's property safety.In order to prevent that PIN from revealing or being cracked; requirement is from terminal to issuing bank in whole information interactive process; whole process is carried out safety encipher protection to PIN; do not allow any link in computer network system; PIN occurs in mode expressly, so the POS terminal of the PIN of acceptance input 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 encrypted protection to WK.Every POS terminal has unique TMK, must have safeguard protection, and assurance can only also participate in calculating by write device, 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.
For taking precautions against Key Exposure risk, the safe machine room that the download of POS terminal master key must be controlled at administrative center carries out, by the artificial download terminal master key of concentrating.Thereby bring maintenance centre's machine room workload large; After equipment dispatches from the factory, need to be transported to administrative center's safe machine room download key and just can be deployed to trade company, cost of transportation rises; In order to concentrate lower dress key, need a large amount of staff and operating time, the problem such as maintenance cost is large, maintenance period is long.
Summary of the invention
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is:
A terminal master key TMK method for safely downloading, comprises step: S1, POS terminal are called code keypad and produced transmission security key TK, and described transmission security key TK comprises asymmetric traffic encryption key TEK and asymmetric authenticate key AUK; S2, POS terminal are sent to KMS system by the PKI Pu_auk of the PKI Pu_tek of TEK and AUK; S3, POS terminal and KMS system are used asymmetric authenticate key AUK to carry out two-way authentication; If S4 authentication is passed through, KMS system call hardware encipher machine uses the PKI Pu_tek of traffic encryption key TEK to encrypt terminal master key TMK and generates master key ciphertext Ctmk_tk, and master key ciphertext Ctmk_tk is sent to POS terminal; S5, POS terminal are called code keypad and are used the private key Pr_tek deciphering master key ciphertext Ctmk_tk of traffic encryption key TEK obtain terminal master key TMK and terminal master key TMK is stored in code keypad.
Another kind of technical scheme provided by the invention is:
A terminal master key TMK secure download system, comprises KMS system, the POS terminal being connected with KMS system communication and hardware encipher machine; Described POS terminal comprises TK generation module, TK sending module, deciphering module, two-way authentication A module, and described KMS system comprises TK receiver module, encrypting module, two-way authentication B module; Described TK generation module is used for calling code keypad and produces transmission security key TK, and wherein, described transmission security key TK comprises asymmetric traffic encryption key TEK and asymmetric authenticate key AUK; Described TK sending module is for being sent to KMS system by the PKI Pu_auk of the PKI Pu_tek of TEK and AUK; Described two-way authentication A module and two-way authentication B module are for being used asymmetric authenticate key AUK to carry out the two-way authentication between POS terminal and KMS system; Described encrypting module, for when authentication is passed through, calls hardware encipher machine and uses the PKI Pu_tek encryption terminal master key TMK of traffic encryption key TEK to generate master key ciphertext Ctmk_tk, and for master key ciphertext Ctmk_tk is sent to POS terminal; Described deciphering module is used the private key Pr_tek deciphering master key ciphertext Ctmk_tk of traffic encryption key TEK to obtain terminal master key TMK for calling code keypad, and for terminal master key TMK is stored in to code keypad.
Beneficial effect of the present invention is: the present invention is by POS terminal upload transfers cipher key T K, use TK carry out the authentication between POS terminal and KMS system and terminal master key TMK is encrypted to download, realize POS terminal remote download terminal master key TMK, greatly facilitate POS terminal downloads TMK.Further, the encryption key TEK that described TK comprises and authenticate key AUK are unsymmetrical key, have therefore strengthened the accuracy of two-way authentication between POS terminal and KMS system and the fail safe in TMK ciphertext transmitting procedure.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of an embodiment of the present invention terminal master key TMK secure download system;
Fig. 2 is the structured flowchart of two-way authentication A module;
Fig. 3 is the structured flowchart of two-way authentication B module;
Fig. 4 is the method flow diagram of an embodiment of the present invention terminal master key TMK method for safely downloading;
Main element symbol description:
10:POS terminal; 20:KMS system; 30: hardware encipher machine; 101:TK generation module; 102: deciphering module; 103:TK sending module; 104: two-way authentication A module; 201:TK receiver module; 202: encrypting module; 203 two-way authentication B modules; 1041: the first random number generation units; 1042: the first data transmit-receive unit; 1043: the first encryption/decryption elements; 1044: the first judging units; 2031: the second random number generation units; 2032: the second data transmit-receive unit; 2033: the second encryption/decryption elements; 2034: the second judging units
Embodiment
By describing technology contents of the present invention, structural feature in detail, being realized object and effect, below in conjunction with execution mode and coordinate accompanying drawing to be explained in detail.
First, the abbreviation the present invention relates to and Key Term are defined and are illustrated:
The abbreviation of AUK:Authentication Key, authentication authorization and accounting key, for the two-way authentication between PINPAD and key management system KMS;
CA center: so-called CA(Certificate Authority) center, it is to adopt PKI(Public Key Infrastructure) public key infrastructure technology, network ID authentication service is provided specially, be responsible for signing and issuing and managing digital certificate, and third party's trust authority with authoritative and fairness, its effect is just as the company of issue certificates in our actual life, as passport is handled mechanism;
The abbreviation of HSM:High Security Machine, high safety means are hardware encipher machine in this system;
KMS system: Key Management System, key management system, for office terminal master key TMK;
The abbreviation of MAK:Mac Key, MAC computation key, consults to determine 24 byte symmetric keys with client, for the MAC value of TK between MTMS system and KMS system, calculates;
MTMS: full name Material Tracking Management System, Tracing Material management system is mainly used when plant produced;
The abbreviation of PIK:Pin Key, Pin encryption key, is a kind of of working key;
PINPAD: code keypad;
The abbreviation of PK:Protect Key, Protective Key, consults to determine with client, 24 byte symmetric keys.Encrypted transmission for TK between MTMS/TCS and KMS;
The abbreviation of POS:Point Of Sale, i.e. point-of-sale terminal
SNpinpad: the sequence number of code keypad, when PINPAD is built-in, SNpos is consistent with POS terminal serial number;
SN: the sequence number of payment terminal;
The abbreviation of TEK:Transmission Encrypt Key, i.e. traffic encryption key, 24 byte symmetric keys, for the encrypted transmission of TMK between PINPAD and key management system KMS;
The abbreviation of TK:Transmission Key, i.e. transmission security key.Transmission security key is comprised of traffic encryption key TEK and two-way authentication key A UK;
The abbreviation of TMS:Terminal Management System, i.e. terminal management system, for completing the functions such as payment terminal information management, software and parameter configuration, remote download, the management of terminal running state information, remote diagnosis;
The abbreviation of TMK:Terminal Master Key, i.e. terminal master key, for payment terminal with pay the encrypted transmission of receiving working key between single system;
Safe house: have higher security level other, for the room of service device, this room needs just can enter after authentication.
Intellective IC card: be CPU card, integrated circuit in card comprises central processor CPU, programmable read only memory EEPROM, random access memory ram and is solidificated in the card internal operating system COS (Chip Operating System) in read only memory ROM, and in card, data are divided into outside and read and inter-process part.
Symmetric key: the both sides that transmit and receive data must use identical key to being expressly encrypted and decrypt operation.Symmetric key encryption algorithm mainly comprises: DES, 3DES, IDEA, FEAL, BLOWFISH etc.
Unsymmetrical key: rivest, shamir, adelman needs two keys: public-key cryptography (private key Public key) and private cipher key (PKI Private key).Public-key cryptography and private cipher key are a pair of, if data are encrypted with public-key cryptography, only have with corresponding private cipher key and could decipher; If data are encrypted with private cipher key, only have so with corresponding public-key cryptography and could decipher.Because what encryption and decryption were used is two different keys, so this algorithm is called rivest, shamir, adelman.The basic process that rivest, shamir, adelman is realized confidential information exchange is: Party A generates a pair of secret keys handle wherein is open as Public key to other side; After using this key to be encrypted confidential information, the Party B who obtains this Public key sends to again Party A; Another private key that Party A preserves with oneself is again decrypted the information after encrypting.Party A sends to Party B after can using Party B's PKI to be encrypted confidential information again; Party B is decrypted the information after encrypting with the private spoon of oneself again.Main algorithm has RSA, Elgamal, knapsack algorithm, Rabin, D-H, ECC(elliptic curve encryption algorithm).
RSA: a kind of asymmetric key algorithm.RSA public key encryption algorithm is by Ron Rivest, Adi Shamirh and Len Adleman, in (Massachusetts Institute Technology), to be developed for 1977.RSA is named the name from they three of exploitation.RSA is the most influential public key encryption algorithm at present, and it can resist up to the present known all cryptographic attacks, by ISO, is recommended as public key data encryption standard.RSA Algorithm is true based on a foolproof number theory: two large prime numbers are multiplied each other very easy.RSA Algorithm be first can be simultaneously for encrypting the algorithm with digital signature, also easy to understand and operation.RSA is studied public key algorithm the most widely, from proposing three ten years till now, has experienced the test of various attack, for people accept, generally believes it is one of current classic PKI scheme gradually.
TDES Triple-DES:DES is a kind of symmetric encipherment algorithm, and key is 8 bytes.TDES is the cryptographic algorithm based on DES, and its key is 16 bytes or 24 bytes.TDES/3DES is the abbreviated expression (being triple DES) of English TripleDES, and DES is that English Data Encryption Standard(counts encryption standard) abbreviated expression.DES is a kind of symmetric key encryption algorithm, i.e. the data encryption key cryptographic algorithm identical with decruption key.DESYou IBM Corporation develops and discloses at 20 century 70s, and for U.S. government adopts, Bing Bei NBS and ANSI (ANSI) are admitted subsequently.TDES/3DES is a kind of pattern of des encryption algorithm, and it uses the key of 3 64 to carry out three encryptions to data.It is a safer distortion of DES.
For solving the technical problem existing in background technology, the present invention adopts a kind of new master key download scenarios, by POS terminal, produce at random TK(Transmission Key, transmission security key), TK after producing is stored in the code keypad of POS terminal, and TK is sent to KMS(Key Management System by transmission means required under various application scenarioss, key management system, for office terminal master key TMK).
When POS terminal to apply download terminal master key TMK, KMS system is used TK to encrypt terminal master key TMK, and the terminal master key ciphertext after encrypting 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, encrypt terminal master key TMK, make TMK can carry out remote transmission, facilitate the secure download of TMK.
Above-mentionedly by POS terminal, gather and to be sent to bank's end after transmission security key TK TMK is encrypted, then can guarantee that by the method that POS terminal remote is downloaded the TMK after TK encrypts TMK can not be cracked in transmitting procedure.But, pass TMK under KMS system before, do not authenticate the identity of POS terminal, still may upload the situation that false TK steals terminal master key TMK in pseudo-POS terminal, therefore need to a kind ofly can before the described TMK of transmission, authenticate the terminal master key TMK secure download scheme of sending and receiving bidirectional identification.
Below just the present invention is overcome to the problems referred to above technical scheme be elaborated.
Referring to Fig. 1, is the structured flowchart of a kind of terminal master key TMK of embodiment of the present invention secure download system, this system comprise KMS system 20, with POS terminal 10 and the hardware encipher machine 30 of KMS system 20 communication connection; Described POS terminal 10 comprises TK generation module 101, TK sending module 103, deciphering module 102, two-way authentication A module 104, and described KMS system 20 comprises TK receiver module 201, encrypting module 202, two-way authentication B module 203.
Described TK generation module 101 produces transmission security key TK for calling code keypad, and wherein, described transmission security key TK comprises asymmetric traffic encryption key TEK and asymmetric authenticate key AUK;
Described TK sending module 103 is for being sent to KMS system 20 by the PKI Pu_auk of the PKI Pu_tek of TEK and AUK.
Described two-way authentication A module 104 and two-way authentication B module 203 are for being used asymmetric authenticate key AUK to carry out the two-way authentication between POS terminal 10 and KMS system 20;
Described encrypting module 202 is for when authentication is passed through, call hardware encipher machine 30 and use the PKI Pu_tek encryption terminal master key TMK of traffic encryption key TEK to generate master key ciphertext Ctmk_tk, and for master key ciphertext Ctmk_tk is sent to POS terminal 10;
Described deciphering module 102 is used the private key Pr_tek deciphering master key ciphertext Ctmk_tk of traffic encryption key TEK to obtain terminal master key TMK for calling code keypad, and for terminal master key TMK is stored in to code keypad.
Wherein, described POS terminal 10 also comprises TR-31 packetization module;
Described TR-31 packetization module, for TMK is packed by TR-31 form, is stored in code keypad with ciphertext form after packing.
Wherein, described KMS system 20 also comprises First Certificate preset module, and described POS terminal also comprises the second certificate preset module;
Described First Certificate preset module is used for calling hardware encipher machine and produces PKI Pu_kms and private key Pr_kms, and private key Pr is stored in hardware encipher machine, and PKI Pu is issued to CA center; Also for calling CA center, use root certificate RootCrt_kms to PKI Pu_kms signature generation work certificate WorkCrt_kms; And for work certificate WorkCrt_kms is preset in to KMS system;
Described the second certificate preset module is for being preset in POS terminal by the superior root certificate RootCrt_kms of work certificate WorkCrt_kms.
Refer to Fig. 3 and Fig. 4, Fig. 3 is the structured flowchart of two-way authentication A module 104, Fig. 4 is the structured flowchart of two-way authentication B module 203, wherein, described two-way authentication A module 104 comprises the first random number generation unit 1041, the first data transmit-receive unit 1042, the first encryption/decryption element 1043 and the first judging unit 1044, and described two-way authentication B module 203 comprises the second random number generation unit 2031, the second data transmit-receive unit 2032, the second encryption/decryption element 2033 and the second judging unit 2034;
Described the first random number generation unit 1041 is for generation of the first random number R nd1;
Described the first data transmit-receive unit 1042 is for sending to KMS system 20 by hardware sequence number SN and the first random number R nd1;
Described the second random number generation unit 2031 is for generating the second random number R nd2;
Described the second encryption/decryption element 2033 is for being used private key Pr_kms to encrypt and generate the first ciphertext C1 Rnd1, and described the second data transmit-receive unit is for being sent to POS terminal 10 by Rnd2, C1 and WorkCrt_kms;
Described the first judging unit 1044 is for being used the legitimacy of KMS system root certificate RootCrt_kms verification KMS system works certificate WorkCrt_kms;
When described the first encryption/decryption element 1043 is legal for checking as described work certificate WorkCrt_kms, from WorkCrt_kms, extract PKI Pu_kms, use Pu_kms to decipher the first ciphertext C1 and obtain the 3rd random number R nd1 ';
Whether the first judging unit 1044 is also consistent with the 3rd random number R nd1 ' for judging the first random number R nd1;
The first encryption/decryption element 1043 is for when consistent, being used the private key Pr_auk of authenticate key AUK to encrypt and generate the second ciphertext C2 the second random number R nd2 with the 3rd random number R nd1 ' as the first random number R nd1;
The first 1042 yuan of data transmit-receive lists are for sending to C2 KMS system 20;
The second encryption/decryption element 2033 generates the 4th random number R nd2 ' for using the PKI Pu_auk of the authenticate key AUK that hardware sequence number SN is corresponding to decipher the second ciphertext C2;
Whether the second judging unit 2034 is consistent with the 4th random number R nd2 ' for judging the second random number R nd2, and when judging that the 4th random number R nd2 ' is with the second random number R nd2 when consistent, the two-way authentication between confirmation KMS system 20 and POS terminal 10 is passed through.
Referring to Fig. 4, is the method flow diagram of a kind of terminal master key TMK of an embodiment of the present invention method for safely downloading, and this terminal master key TMK method for safely downloading comprises:
S1, POS terminal are called code keypad and are produced transmission security key TK, and described transmission security key TK comprises asymmetric traffic encryption key TEK and asymmetric authenticate key AUK;
S2, POS terminal are sent to KMS system by the PKI Pu_auk of the PKI Pu_tek of TEK and AUK;
S3, POS terminal and KMS system are used asymmetric authenticate key AUK to carry out two-way authentication;
If S4 authentication is passed through, KMS system call hardware encipher machine uses the PKI Pu_tek of traffic encryption key TEK to encrypt terminal master key TMK and generates master key ciphertext Ctmk_tk, and master key ciphertext Ctmk_tk is sent to POS terminal;
S5, POS terminal are called code keypad and are used the private key Pr_tek deciphering master key ciphertext Ctmk_tk of traffic encryption key TEK obtain terminal master key TMK and terminal master key TMK is stored in code keypad.
Wherein, described step S5 specifically comprises: POS terminal is called code keypad and used the private key Pr_tek deciphering master key ciphertext Ctmk_tk of traffic encryption key TEK to obtain terminal master key TMK, and master key TMK is packed by TR-31 form, after packing, with ciphertext form, be stored in code keypad.
Wherein, before described step S3, also comprise: KMS system call hardware encipher machine produces PKI Pu_kms and private key Pr_kms, and private key Pr is stored in hardware encipher machine, and PKI Pu is issued to CA center; CA center is used root certificate RootCrt_kms to PKI Pu_kms signature generation work certificate WorkCrt_kms;
Work certificate WorkCrt_kms is preset in to KMS system, the superior root certificate RootCrt_kms of work certificate WorkCrt_kms is preset in to POS terminal.
Wherein, described " POS terminal and KMS system are used asymmetric authenticate key AUK to carry out two-way authentication " specifically comprises:
POS terminal produces the first random number R nd1, and hardware sequence number SN and the first random number R nd1 are sent to KMS system;
KMS system generates the second random number R nd2, uses private key Pr_kms to encrypt and generate the first ciphertext C1 Rnd1, and Rnd2, C1 and WorkCrt_kms are sent to POS terminal;
POS terminal is used the legitimacy of KMS system root certificate RootCrt_kms verification KMS system works certificate WorkCrt_kms, if legal, from WorkCrt_kms, extracts PKI Pu_kms, uses Pu_kms to decipher the first ciphertext C1 and obtains the 3rd random number R nd1 ';
Whether POS terminal judges the first random number R nd1 is consistent with the 3rd random number R nd1 ', if consistent, uses the private key Pr_auk of authenticate key AUK to encrypt and generate the second ciphertext C2 the second random number R nd2, and C2 is sent to KMS system;
KMS system is used the PKI Pu_auk of the authenticate key AUK that hardware sequence number SN is corresponding to decipher the second ciphertext C2 and is generated the 4th random number R nd2 ';
KMS system judges that whether the second random number R nd2 is consistent with the 4th random number R nd2 ', if consistent, judges two-way authentication success.
In the present invention, transmission security key TK calculates the original uncommon Kazakhstan value of TK while producing, and when each storage, transmission or use TK, the uncommon Kazakhstan value of first verification TK just can be used TK after upchecking.Uncommon Kazakhstan value by verification TK can prevent that memory device from causing the error in data of storage extremely, determines that whether key is correct.
Beneficial effect of the present invention is: the present invention is by upload transfers cipher key T K, wherein TK comprises asymmetrical encryption key AUK and asymmetrical authenticate key TEK, by AUK, carry out the two-way authentication between POS terminal and KMS system, authentication by after download after being encrypted terminal master key TMK by TEK, thereby realized POS terminal remote download terminal master key TMK, by authenticate key AUK carry out two-way who guaranteed that POS terminal and KMS system are legal identity, prevent that pseudo-POS terminal from stealing TMK or pseudo-KMS system issues pseudo-TMK, simultaneously, AUK and TEK are the download safety that unsymmetrical key has further improved TMK.Further, master key TMK of the present invention is generated by KMS system, therefore facilitates KMS system to the follow-up maintenance of master key TMK and management.Further, the master key TMK after download accesses to your password after cipher mode that keyboard keyboard provides is encrypted and is stored in the code keypad of POS terminal, has improved the safety of master key TMK in POS terminal.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes specification of the present invention and accompanying drawing content to do; 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 terminal master key TMK method for safely downloading, is characterized in that, comprises step:
S1, POS terminal are called code keypad and are produced transmission security key TK, and described transmission security key TK comprises asymmetric traffic encryption key TEK and asymmetric authenticate key AUK;
S2, POS terminal are sent to KMS system by the PKI Pu_auk of the PKI Pu_tek of TEK and AUK;
S3, POS terminal and KMS system are used asymmetric authenticate key AUK to carry out two-way authentication;
If S4 authentication is passed through, KMS system call hardware encipher machine uses the PKI Pu_tek of traffic encryption key TEK to encrypt terminal master key TMK and generates master key ciphertext Ctmk_tk, and master key ciphertext Ctmk_tk is sent to POS terminal;
S5, POS terminal are called code keypad and are used the private key Pr_tek deciphering master key ciphertext Ctmk_tk of traffic encryption key TEK obtain terminal master key TMK and terminal master key TMK is stored in code keypad.
2. terminal master key TMK method for safely downloading according to claim 1, is characterized in that, described step S5 specifically comprises:
POS terminal is called code keypad and is used the private key Pr_tek deciphering master key ciphertext Ctmk_tk of traffic encryption key TEK to obtain terminal master key TMK, and master key TMK is packed by TR-31 form, after packing, with ciphertext form, is stored in code keypad.
3. terminal master key TMK method for safely downloading according to claim 1, it is characterized in that, before described step S3, also comprise: KMS system call hardware encipher machine produces PKI Pu_kms and private key Pr_kms, and private key Pr is stored in hardware encipher machine, and PKI Pu is issued to CA center; CA center is used root certificate RootCrt_kms to PKI Pu_kms signature generation work certificate WorkCrt_kms;
Work certificate WorkCrt_kms is preset in to KMS system, the superior root certificate RootCrt_kms of work certificate WorkCrt_kms is preset in to POS terminal.
4. a kind of terminal master key TMK method for safely downloading according to claim 3, is characterized in that, described " POS terminal and KMS system are used asymmetric authenticate key AUK to carry out two-way authentication " specifically comprises:
POS terminal produces the first random number R nd1, and hardware sequence number SN and the first random number R nd1 are sent to KMS system;
KMS system generates the second random number R nd2, uses private key Pr_kms to encrypt and generate the first ciphertext C1 Rnd1, and Rnd2, C1 and WorkCrt_kms are sent to POS terminal;
POS terminal is used the legitimacy of KMS system root certificate RootCrt_kms verification KMS system works certificate WorkCrt_kms, if legal, from WorkCrt_kms, extracts PKI Pu_kms, uses Pu_kms to decipher the first ciphertext C1 and obtains the 3rd random number R nd1 ';
Whether POS terminal judges the first random number R nd1 is consistent with the 3rd random number R nd1 ', if consistent, uses the private key Pr_auk of authenticate key AUK to encrypt and generate the second ciphertext C2 the second random number R nd2, and C2 is sent to KMS system;
KMS system is used the PKI Pu_auk of the authenticate key AUK that hardware sequence number SN is corresponding to decipher the second ciphertext C2 and is generated the 4th random number R nd2 ';
KMS system judges that whether the second random number R nd2 is consistent with the 4th random number R nd2 ', if consistent, judges two-way authentication success.
5. a terminal master key TMK secure download system, is characterized in that, comprises KMS system, the POS terminal being connected with KMS system communication and hardware encipher machine; Described POS terminal comprises TK generation module, TK sending module, deciphering module, two-way authentication A module, and described KMS system comprises TK receiver module, encrypting module, two-way authentication B module;
Described TK generation module is used for calling code keypad and produces transmission security key TK, and wherein, described transmission security key TK comprises asymmetric traffic encryption key TEK and asymmetric authenticate key AUK;
Described TK sending module is for being sent to KMS system by the PKI Pu_auk of the PKI Pu_tek of TEK and AUK;
Described two-way authentication A module and two-way authentication B module are for being used asymmetric authenticate key AUK to carry out the two-way authentication between POS terminal and KMS system;
Described encrypting module, for when authentication is passed through, calls hardware encipher machine and uses the PKI Pu_tek encryption terminal master key TMK of traffic encryption key TEK to generate master key ciphertext Ctmk_tk, and for master key ciphertext Ctmk_tk is sent to POS terminal;
Described deciphering module is used the private key Pr_tek deciphering master key ciphertext Ctmk_tk of traffic encryption key TEK to obtain terminal master key TMK for calling code keypad, and for terminal master key TMK is stored in to code keypad.
6. terminal master key TMK secure download system according to claim 5, is characterized in that, described POS terminal also comprises TR-31 packetization module;
Described TR-31 packetization module, for TMK is packed by TR-31 form, is stored in code keypad with ciphertext form after packing.
7. terminal master key TMK secure download system according to claim 5, is characterized in that, described KMS system also comprises First Certificate preset module, and described POS terminal also comprises the second certificate preset module;
Described First Certificate preset module is used for calling hardware encipher machine and produces PKI Pu_kms and private key Pr_kms, and private key Pr is stored in hardware encipher machine, and PKI Pu is issued to CA center; Also for calling CA center, use root certificate RootCrt_kms to PKI Pu_kms signature generation work certificate WorkCrt_kms; And for work certificate WorkCrt_kms is preset in to KMS system;
Described the second certificate preset module is for being preset in POS terminal by the superior root certificate RootCrt_kms of work certificate WorkCrt_kms.
8. terminal master key TMK secure download system according to claim 7, it is characterized in that, described two-way authentication A module comprises the first random number generation unit, the first data transmit-receive unit, the first encryption/decryption element and the first judging unit, and described two-way authentication B module comprises the second random number generation unit, the second data transmit-receive unit, the second encryption/decryption element and the second judging unit;
Described the first random number generation unit is for generation of the first random number R nd1;
Described the first data transmit-receive unit is for sending to KMS system by hardware sequence number SN and the first random number R nd1;
Described the second random number generation unit is used for generating the second random number R nd2;
Described the second encryption/decryption element is used for using private key Pr_kms to encrypt and generate the first ciphertext C1 Rnd1, and described the second data transmit-receive unit is for being sent to POS terminal by Rnd2, C1 and WorkCrt_kms;
Described the first judging unit is for being used the legitimacy of KMS system root certificate RootCrt_kms verification KMS system works certificate WorkCrt_kms;
When described the first encryption/decryption element is legal for checking as described work certificate WorkCrt_kms, from WorkCrt_kms, extract PKI Pu_kms, use Pu_kms to decipher the first ciphertext C1 and obtain the 3rd random number R nd1 ';
Whether the first judging unit is also consistent with the 3rd random number R nd1 ' for judging the first random number R nd1;
The first encryption/decryption element is for when the first random number R nd1 is with the 3rd random number R nd1 ' when consistent, and the private key Pr_auk of use authenticate key AUK is to second random number R nd2 encryption generation the second ciphertext C2;
The first data transmit-receive unit is for sending to KMS system by C2;
The second encryption/decryption element generates the 4th random number R nd2 ' for using the PKI Pu_auk of the authenticate key AUK that hardware sequence number SN is corresponding to decipher the second ciphertext C2;
The second judging unit is used for judging that whether the second random number R nd2 is consistent with the 4th random number R nd2 ', and when judging that the 4th random number R nd2 ' is with the second random number R nd2 when consistent, the two-way authentication between confirmation KMS system and POS terminal is passed through.
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CN2013100846716A CN103220270A (en) 2013-03-15 2013-03-15 Downloading method, management method, downloading management method, downloading management device and downloading management system for secret key
CN2013100846735 2013-03-15
CN2013100846735A CN103220271A (en) 2013-03-15 2013-03-15 Downloading method, management method, downloading management method, downloading management device and downloading management system for secret key
CN201310084397.2 2013-03-15
CN201310084653.8 2013-03-15
CN2013100846538 2013-03-15
CN2013100843972A CN103237004A (en) 2013-03-15 2013-03-15 Key download method, key management method, method, device and system for download management
CN2013100843972 2013-03-15
CN201310084673.5 2013-03-15
CN201310084671.6 2013-03-15
CN2013100846716 2013-03-15
CN2013100846538A CN103237005A (en) 2013-03-15 2013-03-15 Method and system for key management
CN201310740540.9A CN103716154B (en) 2013-03-15 2013-12-27 A kind of terminal master key TMK safety downloading method and systems

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CN201310740537.7A Active CN103746800B (en) 2013-03-15 2013-12-27 TMK (terminal master key) safe downloading method and system
CN201310741948.8A Active CN103714639B (en) 2013-03-15 2013-12-27 A kind of method and system that realize the operation of POS terminal security
CN201310742686.7A Active CN103745351B (en) 2013-03-15 2013-12-27 A kind of acquisition method and system for transmitting cipher key T K
CN201310742713.0A Active CN103701610B (en) 2013-03-15 2013-12-27 A kind of acquisition method and system for transmitting cipher key T K
CN201310742886.2A Active CN103716321B (en) 2013-03-15 2013-12-27 A kind of terminal master key TMK safety downloading method and systems
CN201310740430.2A Active CN103729943B (en) 2013-03-15 2013-12-27 A kind of method and system transmission security key being imported KMS system
CN201310740644.XA Active CN103714638B (en) 2013-03-15 2013-12-27 A kind of method and system of quick position terminal master key failed download
CN201310742661.7A Active CN103716167B (en) 2013-03-15 2013-12-27 Method and device for safely collecting and distributing transmission keys
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
CN201310740360.0A Active CN103714636B (en) 2013-03-15 2013-12-27 A kind of method of batch capture and upload transfers cipher key T K data and operating terminal
CN201310740100.3A Active CN103714633B (en) 2013-03-15 2013-12-27 A kind of method of safe generating transmission key and POS terminal
CN201310742648.1A Active CN103716155B (en) 2013-03-15 2013-12-27 A kind of method of automated maintenance POS terminal and operation terminal
CN201310742681.4A Active CN103714640B (en) 2013-03-15 2013-12-27 A kind of sending method of transmission security key and system
CN201310741949.2A Active CN103731260B (en) 2013-03-15 2013-12-27 A kind of terminal master key TMK safety downloading method and system
CN201310740264.6A Active CN103701812B (en) 2013-03-15 2013-12-27 TMK (Terminal Master Key) secure downloading method and system
CN201310740231.1A Active CN103714635B (en) 2013-03-15 2013-12-27 A kind of POS terminal and terminal master key downloading mode collocation method thereof
CN201310740158.8A Active CN103716320B (en) 2013-03-15 2013-12-27 A kind of terminal master key TMK safety downloading method and systems
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CN201310740540.9A Active CN103716154B (en) 2013-03-15 2013-12-27 A kind of terminal master key TMK safety downloading method and systems
CN201310740226.0A Active CN103714634B (en) 2013-03-15 2013-12-27 A kind of method of main key of secure download terminal and system
CN201310742991.6A Active CN103714641B (en) 2013-03-15 2013-12-27 A kind of terminal master key TMK method for safely downloading and system
CN201310740410.5A Active CN103729942B (en) 2013-03-15 2013-12-27 Transmission security key is transferred to the method and system of key server from terminal server
CN201310740244.9A Active CN103701609B (en) 2013-03-15 2013-12-27 A kind of server and the method and system operating terminal two-way authentication
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CN201310740574.8A Active CN103729945B (en) 2013-03-15 2013-12-27 A kind of method and system of secure download terminal master key
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CN201310740537.7A Active CN103746800B (en) 2013-03-15 2013-12-27 TMK (terminal master key) safe downloading method and system
CN201310741948.8A Active CN103714639B (en) 2013-03-15 2013-12-27 A kind of method and system that realize the operation of POS terminal security
CN201310742686.7A Active CN103745351B (en) 2013-03-15 2013-12-27 A kind of acquisition method and system for transmitting cipher key T K
CN201310742713.0A Active CN103701610B (en) 2013-03-15 2013-12-27 A kind of acquisition method and system for transmitting cipher key T K
CN201310742886.2A Active CN103716321B (en) 2013-03-15 2013-12-27 A kind of terminal master key TMK safety downloading method and systems
CN201310740430.2A Active CN103729943B (en) 2013-03-15 2013-12-27 A kind of method and system transmission security key being imported KMS system
CN201310740644.XA Active CN103714638B (en) 2013-03-15 2013-12-27 A kind of method and system of quick position terminal master key failed download
CN201310742661.7A Active CN103716167B (en) 2013-03-15 2013-12-27 Method and device for safely collecting and distributing transmission keys
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
CN201310740360.0A Active CN103714636B (en) 2013-03-15 2013-12-27 A kind of method of batch capture and upload transfers cipher key T K data and operating terminal
CN201310740100.3A Active CN103714633B (en) 2013-03-15 2013-12-27 A kind of method of safe generating transmission key and POS terminal
CN201310742648.1A Active CN103716155B (en) 2013-03-15 2013-12-27 A kind of method of automated maintenance POS terminal and operation terminal
CN201310742681.4A Active CN103714640B (en) 2013-03-15 2013-12-27 A kind of sending method of transmission security key and system
CN201310741949.2A Active CN103731260B (en) 2013-03-15 2013-12-27 A kind of terminal master key TMK safety downloading method and system
CN201310740264.6A Active CN103701812B (en) 2013-03-15 2013-12-27 TMK (Terminal Master Key) secure downloading method and system
CN201310740231.1A Active CN103714635B (en) 2013-03-15 2013-12-27 A kind of POS terminal and terminal master key downloading mode collocation method thereof
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CN201310740410.5A Active CN103729942B (en) 2013-03-15 2013-12-27 Transmission security key is transferred to the method and system of key server from terminal server
CN201310740244.9A Active CN103701609B (en) 2013-03-15 2013-12-27 A kind of server and the method and system operating terminal two-way authentication
CN201310740642.0A Active CN103731259B (en) 2013-03-15 2013-12-27 A kind of terminal master key TMK safety downloading method and systems
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CN103731259B (en) 2017-08-01
CN103714636B (en) 2015-12-02
CN103729941A (en) 2014-04-16
CN103729943B (en) 2015-12-30
CN103716153B (en) 2017-08-01
CN103714634A (en) 2014-04-09
CN103714640A (en) 2014-04-09
CN103716153A (en) 2014-04-09
CN103714637B (en) 2016-03-16
CN103731260B (en) 2016-09-28
WO2014139408A1 (en) 2014-09-18
CN103716321B (en) 2017-08-29
CN103729945A (en) 2014-04-16
CN103714639B (en) 2016-05-04
CN103714641B (en) 2016-03-30
CN103729943A (en) 2014-04-16
CN103701609B (en) 2016-09-28
CN103701610B (en) 2018-04-17
CN103729942B (en) 2016-01-13
CN103714637A (en) 2014-04-09
CN103714641A (en) 2014-04-09
CN103714638A (en) 2014-04-09
CN103729942A (en) 2014-04-16
CN103714633B (en) 2016-05-04
CN103731260A (en) 2014-04-16
CN103729941B (en) 2016-06-15
CN103701812B (en) 2017-01-25
CN103714633A (en) 2014-04-09
WO2014139412A1 (en) 2014-09-18

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