CN103971246A - One-way function bidirectional encryption based electronic commodity security system - Google Patents

Abstract

The invention aims to provide a combined commodity security system, namely a one-way function bidirectional encryption based electronic commodity security system. The electronic commodity security system comprises an RFID (radio frequency identification device) read-write device, an RFID reader, a random number generator, a system server and RFID electronic tags arranged on commodities, and each commodity corresponds to a length of message MAi composed of serial numbers. Before delivery, each commodity generates a length of the serial numbers along with the random number generator to be used as digital signatures of the MAi. The MAi is subjected to one-way function calculation to acquire CAi=H1(MBi), and the MBi is subjected to one-way function calculation to acquire CBi=H2(MBi). The combined message is acquired as follows: K1i=MAi&CBi and K2i=CAi&MBi. Before delivery of each commodity, the RFID electronic tags are pre-written into the combined message of K1i, and the combined message of K2i is stored in the system server.

Description

A kind of electronic article Antiforge system based on one-way function bidirectional encipher

Technical field

The present invention relates to anti-counterfeiting technology field.

Background technology

Along with the development of mobile communication technology, the particularly development of 2.45GHz REID and mobile phone near field communication (NFC) (NFC13.56MHz), the closely recognition function of mobile phone and mobile terminal is become stronger day by day.Mobile Internet and Internet of Things forward people's sphere of life infiltration.Anti-counterfeit recognition technology based on this technology emerges in an endless stream.For example, Chinese patent " a kind of Comodity anti-fake system based on mobile terminal and RFID electronic tag " is exactly Internet of Things successful expansion application on product information is reviewed and verified by mobile mutual contact mode.This technology has prevented false making to a great extent, in practice, is also successfully applied.Querying commodity information and Application in Anti-counterfeiting based on RFID electronic tag and mobile Internet are increasingly extensive, and further improving of the information security of electronic article Antiforge system and encryption system is more and more important.

The technical merit of false making is also in corresponding improve at present, counterfeiter analyzes deciphering by the information that RFID electronic tag is read, or break through after vendor system server by hacker's means, authentication comparison data or the key algorithm of commodity counterfeit prevention information have been obtained, just can manufacture in large quantity false electronic tag, reach deception consumer's object.Therefore, existing internet false-proof authentication system need to be improved.

Summary of the invention

A kind of combined goods electronic anti-counterfeiting system method that comprises that random number signature and two one-way function are encrypted that provides is provided.

For realizing the technical scheme that the object of the invention adopts, be such, an electronic article Antiforge system based on one-way function bidirectional encipher, is characterized in that: comprise RFID read-write equipment, RFID reader, randomizer, system server and be arranged on the RFID electronic tag on each part commodity;

The corresponding one section of message MA being formed by sequence number of each part commodity_i, i=1,2 ... n; Before each part commodity dispatches from the factory, by described randomizer, produce one section of random number sequence MB_ias described MA_idigital signature; To MA_iimplement one-way function computing and obtain CA_i=H1 (MA_i), to MB_iimplement one-way function computing and obtain CB_i=H2 (MB_i); Obtain combined message K1_i=MA_iaMP.AMp.Amp CB_i, and combined message K2_i=CA_iaMP.AMp.Amp MB_i;

Before each part commodity dispatches from the factory, described RFID electronic tag is write combined message K2 in advance_i, i=1,2 ... n; Combined message set { K1₁, K1₂k1_ndeposit in system server;

In the time that commodity true and false need to being verified, after the RFID electronic tag in described RFID reader items scanning, the message X reading is sent to described system server; Described system server is received after the message X of reader transmission, first judges form and the combined message K2 of X_iwhether identical, if not, these commodity are false; If the form of message X and combined message K2_iidentical, message X is split as to XA and XB two parts, wherein, the form of XA and CA_iidentical, the form of XB and MB_iidentical, i.e. X=XA & XB; Described message XB is carried out to one-way function computing, the value of obtaining CXB=H2 (XB): if{ CB₁, CB₂cB_n, commodity are false; If CXB=CB_j, j=1,2 ... n, and CB_j∈ { CB₁, CB₂cB_n, find out CB_jcorresponding MA_j, described MA_j∈ { MA₁, MA₂mA_n; To described message MA_jcarry out one-way function computing, the value of obtaining CA_j=H1 (MA_j): if CA_j=XA, commodity are genuine piece, if CA_j≠ XA, commodity are false.

The combined message K2 writing in advance in RFID electronic tag on each part commodity_ithere is randomness and uniqueness.

Described CA_iand MB_iat K2_i=CA_iaMP.AMp.Amp MB_ibe written into after RFID electronic tag, be not present in system server K2_i=CA_iaMP.AMp.Amp MB_ivalue can not be stolen and copy by scale by attacking system server.

Described message MA_ior MB_ilength be 8-160 position.

Described commodity sequence number part MA_icomprise commodity production time and commodity sequence number.

When described commodity are activated, described RFID electronic tag is damaged.

Described RFID reader is mobile phone or the mobile terminal with radio frequency recognition function or close range wireless communication NFC function.

What deserves to be explained is, even if counterfeiter breaks through described system server, get the data in system database, counterfeiter also cannot extrapolate the message in the RFID electronic tag being written on commodity in batches.Being more preferably, itself there is random partial in described combined message, and counterfeiter is also difficult to obtain the corresponding combined message of system server storing value by modes such as birthday attacks, thereby makes counterfeiter cannot manufacture in batches counterfeit goods.

Embodiment

Below in conjunction with embodiment, the invention will be further described, but should not be construed the above-mentioned subject area of the present invention, only limits to following embodiment.Without departing from the idea case in the present invention described above, according to ordinary skill knowledge and customary means, make various replacements and change, all should be included in protection scope of the present invention.

An electronic article Antiforge system based on one-way function bidirectional encipher, comprises RFID read-write equipment, RFID reader, randomizer, system server and is arranged on the RFID electronic tag on each part commodity.

The corresponding one section of message MA being formed by sequence number of each part commodity_i, i=1,2 ... n.MA for example₁=20140107000000000001, this sequence comprises commodity production date and goods number, and " 20140107 " are the commodity production dates, the 000000000001st, be convenient to the goods number that manufacturer manages.

Before each part commodity dispatches from the factory, by described randomizer, produce one section of random number sequence MB_ias described MA_idigital signature.MB for example₁=35,012,392,526,778,332,279,142,496,840,546,754,355,406,466,704,413,024,113 4715519816084898981615070104898499431969926319026578802.MB₁random generation, with MA₁correspondence, as MA₁digital signature, reach one-time pad pattern.

To MA_iimplement one-way function computing and obtain CA_i=H1 (MA_i).Wherein, y=H1 (x) is an one-way function.As preferably, y=H1 (x) is a hash function, CA_imA_icryptographic hash.Particularly, in the present embodiment, described y=H1 (x) is MD5 function.For example,, by described MA₁=20140107000000000001 carry out, after md5 encryption, obtaining CA₁=4c4ed5ab830b4c439cd567c43e50ca6c.

To MB_iimplement one-way function computing and obtain CB_i=H2 (MB_i).Wherein, y=H2 (x) is an one-way function.As preferably, y=H2 (x) is a hash function, CB_imB_icryptographic hash.Particularly, in the present embodiment, described y=H2 (x) is the hash function different from y=H1 (x), is preferably SHA-1.For example,, by described MB₁=35,012,392,526,778,332,279,142,496,840,546,754,355,406,466,704,413,024,113 4715519816084898981615070104898499431969926319026578802 carry out, after SHA-1 encryption, obtaining CB₁=d582aeb22e4bfbf891b3a9f84469c59894c998a9.

Obtain combined message K1_i=MA_iaMP.AMp.Amp CB_i, and combined message K2_i=CA_iaMP.AMp.Amp MB_i.For example, K1₁=MA₁aMP.AMp.Amp CB₁=20140107000000000001d582aeb22e4bfbf891b3a9f84469c59894c9 98a9, K2_i=CA₁aMP.AMp.Amp MB₁=4c,4ed,5ab,830,b4c,439,cd5,67c,43e,50c,a6c,350,123,925,267,783,322,791,424 96,840,546,754,355,406,466,704,413,024,113,471,551,981,608,489,898,161,507 0104898499431969926319026578802.

Before each part commodity dispatches from the factory, the RFID electronic tag on commodity is write combined message K2 in advance_i, i=1,2 ... n.Combined message set { K1₁, K1₂k1_ndeposit in system server, in described server, there is massage set { MA₁, MA₂mA_nand { CB₁, CB₂cB_n.And { CA₁, CA₂cA_nand { MB₁, MB₂mB_nbe not stored in server.

In the time of need to verifying commodity true and false, after the RFID electronic tag in described RFID reader items scanning, the message X reading is sent to described system server, described message X may be real K2_i, may not be yet.Described system server is received after the message X of reader transmission, first judges form and the combined message K2 of X_iwhether identical (data bits is mutually equal, lower with), if not, these commodity are false.If the form of message X and combined message K2_iidentical, message X is split as to XA and XB two parts, wherein, the form of XA and CA_iidentical, the form of XB and MB_iidentical, X=XA & XB(XA is likely real CA_i, may not be yet; In like manner, XB is likely real MB_i, may not be yet).Described message XB is carried out to one-way function computing, the value of obtaining CXB=H2 (XB): if{ CB₁, CB₂cB_n, commodity are false.If CXB=CB_j, j=1,2 ... n, and CB_j∈ { CB₁, CB₂cB_n, find out CB_jcorresponding MA_j, described MA_j∈ { MA₁, MA₂mA_n.To described message MA_jcarry out one-way function computing, the value of obtaining CA_j=H1 (MA_j): if CA_j=XA, commodity are genuine piece, if CA_j≠ XA, commodity are false.

For example, reader reads on commodity RFID electronic tag and has sequence X=4c,4ed,5ab,830,b4c,439,cd5,67c,43e,50c,a6c,350,123,925,267,783,322,791,424 96,840,546,754,355,406,466,704,413,024,113,471,551,981,608,489,898,161,507 0104898499431969926319026578802.Reader sends to server by XA and XB.These data that read due to reader are 143, with K2_iidentical, need further judgement commodity true and false.Above-mentioned sequence X is split as to two parts, i.e. XA=4c4ed5ab830b4c439cd567c43e50ca6c and XB=35012392526778332279142496840546754355406466704413024 11,347,155,198,160,848,989,816,150,701,048,984,994,319,699,263,190,265,788 02.In server, XB is carried out to SHA-1 computing, obtain CXB=d582aeb22e4bfbf891b3a9f84469c59894c998a9.Judge whether CXB belongs to the { CB of server memory storage₁, CB₂cB_n.Above-mentioned CXB=CB₁(be described CB_jin, j=1), need further to judge commodity true and false.Find and CB₁corresponding MA₁, to MA₁=20140107000000000001 carry out, after MD5 computing, obtaining CA₁=4c4ed5ab830b4c439cd567c43e50ca6c.Due to CA₁=XA, it is true determining these commodity, server is the information of genuine piece to reader feedback commodity.

Claims (7)

1. the electronic article Antiforge system based on one-way function bidirectional encipher, is characterized in that: comprise RFID read-write equipment, RFID reader, randomizer, system server and be arranged on the RFID electronic tag on each part commodity;

The corresponding one section of message MA being formed by sequence number of each part commodity_i, i=1,2 ... n; Before each part commodity dispatches from the factory, by described randomizer, produce one section of random number sequence MB_ias described MA_idigital signature; To MA_iimplement one-way function computing and obtain CA_i=H1 (MA_i), to MB_iimplement one-way function computing and obtain CB_i=H2 (MB_i); Obtain combined message K1_i=MA_iaMP.AMp.Amp CB_i, and combined message K2_i=CA_iaMP.AMp.Amp MB_i;

Before each part commodity dispatches from the factory, described RFID electronic tag is write combined message K2 in advance_i, i=1,2 ... n; Combined message set { K1₁, K1₂k1_ndeposit in system server;

In the time that commodity true and false need to being verified, after the RFID electronic tag in described RFID reader items scanning, the message X reading is sent to described system server; Described system server is received after the message X of reader transmission, first judges form and the combined message K2 of X_iwhether identical, if not, these commodity are false; If the form of message X and combined message K2_iidentical, message X is split as to XA and XB two parts, wherein, the form of XA and CA_iidentical, the form of XB and MB_iidentical, i.e. X=XA & XB; Described message XB is carried out to one-way function computing, the value of obtaining CXB=H2 (XB): if{ CB₁, CB₂cB_n, commodity are false; If CXB=CB_j, j=1,2 ... n, and CB_j∈ { CB₁, CB₂cB_n, find out CB_jcorresponding MA_j, described MA_j∈ { MA₁, MA₂mA_n; To described message MA_jcarry out one-way function computing, the value of obtaining CA_j=H1 (MA_j): if CA_j=XA, commodity are genuine piece, if CA_j≠ XA, commodity are false.

2. a kind of electronic article Antiforge system based on one-way function bidirectional encipher according to claim 1, is characterized in that: the combined message K2 writing in advance in the RFID electronic tag on each part commodity_ithere is randomness and uniqueness.

3. a kind of electronic article Antiforge system based on one-way function bidirectional encipher according to claim 1, is characterized in that: described CA_iand MB_iat K2_i=CA_iaMP.AMp.Amp MB_ibe written into after RFID electronic tag, be not present in system server K2_i=CA_iaMP.AMp.Amp MB_ivalue can not be stolen and copy by scale by attacking system server.

4. a kind of electronic article Antiforge system based on one-way function bidirectional encipher according to claim 1, is characterized in that: described message MA_ior MB_ilength be 8-1024 position.

5. a kind of electronic article Antiforge system based on one-way function bidirectional encipher according to claim 1, is characterized in that: described commodity sequence number part MA_icomprise commodity production time and commodity sequence number.

6. a kind of electronic article Antiforge system based on one-way function bidirectional encipher according to claim 1, is characterized in that: when described commodity are activated, described RFID electronic tag is damaged.

7. a kind of electronic article Antiforge system based on one-way function bidirectional encipher according to claim 1, is characterized in that: described RFID reader is mobile phone or mobile terminal with radio frequency recognition function or close range wireless communication NFC function.