TWI626595B - Verification method combining chip contents with card security printing - Google Patents

Abstract

The invention discloses a verification method combining the wafer content and the card anti-counterfeiting printing, mainly based on the hash function and the time stamp signature, and combines the wafer content and the card anti-counterfeiting printing to verify the card holder identity and the card. Consistency and integrity. First, provide the hash value of the card related information, and then pass the hash value to the next card information, obtain the latest hash value, and then cascade each process step to form a closely related "blockchain" ( Block chain), so as long as there is any tampering in the middle, it is easy to be discovered. In addition, the present invention sequentially marks each hash value as a time stamp, and the stamp number is hidden in the surface coating of the card, and the function of verifying personal information between the card and the chip is provided, and the time stamp is provided. The serial number is stored in the wafer.

Description

Verification method for combining wafer content and card security printing

The present invention relates to a verification technique, and more particularly to a verification method for combining wafer content with card security printing.

IC (integrated circuit card) refers to a portable card plastic with a built-in circuit chip attached or embedded. The card contains a microprocessor, an I/O interface and a memory, and provides data calculation, access control and storage functions. The card size and contact definition are currently unified by the ISO specification, and the main specification is in ISO7810. Common wafer cards include telephone IC cards, identity IC cards, and some transportation tickets and memory cards.

Therefore, IC chip cards are widely used in daily life, including financial transactions, telecommunications services, transportation, access control management, and medical services. Our current life can be said to be inseparable from IC cards, and online tax returns ( Natural person credentials, online banking and e-commerce are also applications of IC cards. At present, some IC cards have integrated different applications on the same card, and different areas are divided on the wafer to control different functions, so that the number of cards can be reduced, and the carrying is also more convenient. For example, many school student identification cards nowadays are equipped with access control and leisure card functions; Banks cooperate with telecom operators to provide financial services for withdrawals and billing services on their IC financial cards. Therefore, matching personal data with cards is quite important. How to provide correct and secure IC chip cards It has become the subject of research and discussion of the present invention.

The invention provides a verification method combining the wafer content and the card anti-counterfeiting printing. In the card making process, the time stamp feature is used to obtain the time stamp number of the history according to the order of the hash value. Printed onto the card in order to achieve the uniqueness of the wafer and the card and to prevent the difficulty of counterfeiting.

According to the above object, the present invention provides a verification method for combining a wafer content with a card security printing, the method comprising: performing a first hash value into a wafer by using a generator to calculate a wafer serial number and an appearance number via a hash function. And causing the first hash value to be a first time stamp signature to print a first set of time stamp numbers (TSAs) printed on the first surface coating of the card by using the first time stamp signature; Passing a key and a first hash value to form a block through a card management center, and the generator performs the hash function operation to obtain a second hash value and deposits the chip into the chip. The second hash value is used as a second time stamp signature to print a second set of time stamp numbers on the second surface coating of the card by using the second time stamp signature, the second surface The coating is located on the first surface coating; a third serial value is obtained by adding a voucher number to the second hash value through a card-making center to obtain a third hash value, and the third hash is obtained. After the value is stored in the chip, the third hash value is used as a third time stamp signature, so that a third set of time stamp numbers obtained by using the third time stamp signature is printed on a third of the card. a surface coating, the third surface coating is on the second surface coating; and through a verification module, according to the plurality of coatings printed on the card (such as the first, second and third surfaces The number of time stamps in the layer (such as the first group, the second group, and the third group of time stamp numbers), and obtain the signature contents in the first group, the second group, and the third group of time stamp serial numbers, The sequence verifies that the hash values (such as the first, second, and third hash values) of the wafer are the same as the signature content, thereby confirming that the data stored in the wafer content has not been tampered with.

Therefore, the technical advantages of the present invention are as follows: The method proposed by the present invention is to form a series of closely related information generated by a single card process step, and increase the difficulty and maturity of the next information generation through hash encryption. Degree, to achieve the purpose of improving the difficulty of card forgery.

The method proposed by the present invention establishes the process sequence of the blockchain. Since the new data must be accompanied by the previous hash value, and the hash is decisive and irreversible, this indicates that the new block must appear after the old block to achieve the uniqueness of the wafer content.

The method proposed by the invention uses the time stamp signature to print the time stamp serial number on the card coating, and provides a combination mechanism of the wafer content and the card anti-counterfeiting printing as the verification basis.

The method proposed by the invention is that the surface coating and the wafer content are matched when the card is made, and no confidential record is stored in the server end, and the operation mode can reduce the wind stolen due to centralized management and storage. risk.

The method of the invention is based on the time stamp serial number printed on the surface coating, separately obtaining the individual signature contents, and comparing the corresponding hash values stored in the wafer, the result does not affect the operation of others, making it unique. With uniqueness.

The core technology of the invention does not need to store any confidential data on the server end, and uses low-cost operation to reduce the cost of establishing and maintaining the server end, and the time stamp signature not only confirms the accuracy of the time, but also the content of the wafer. The close combination of cards makes the card more secure and highly progressive.

1‧‧‧System for anti-counterfeiting and wafer verification anti-counterfeiting

10‧‧‧White Card

20‧‧‧Card Management Center

30‧‧‧Card Center

50‧‧‧Verification device

51‧‧‧ generator

52‧‧‧ Time Stamp Server

53‧‧‧ verification module

S1~S13, S31~S35‧‧‧ steps

The specific embodiments disclosed in the present disclosure will be described in detail with the following drawings. These descriptions are shown in the following drawings: FIG. 1 is a block diagram of a system for anti-counterfeiting printing and wafer verification anti-counterfeiting of the present invention; FIG. 2 depicts the system of the present invention. A flow chart of how to generate H ¹ , H ² and H ³ ; and FIG. ^{3 is} a flow chart of the card anti-counterfeiting verification according to the present invention.

The existing protection mechanism using the IC card mainly requires the input of the PIN code and must be verified when using the card. Each transaction has a unique transaction serial number, a key protection in the card, etc., but the personal data and IC are usually ignored. Card protection mechanism, there is still a problem of leakage.

Therefore, in view of the above problems, the present invention provides a wafer content Verification method combined with card security printing.

1 is a block diagram of a system 1 for anti-counterfeiting and wafer verification for wafer security. The verification device 50 of the system 1 has a generator 51, a time stamp server 52 and a verification module 53.

Before the system performs the verification method combining the wafer content and the card anti-counterfeiting printing, it should be understood that the manner of card production is roughly divided into the card and card surface two manufacturing steps. The card making step belongs to the roughing part, mainly for forming the bottom card, and the card surface making step belongs to the fine processing step, mainly for completing the process of writing information, printing number, sealing and the like for the card.

The method for implementing the present invention is described in detail as follows: In step S1, the bottom card which is not pre-persed is referred to as a white card 10, and the white card 10 at this time already has the wafer serial number and the appearance serial number. The generator 51 receives the two sequence numbers via a hash function operation, such as an asymmetric hash function or a symmetric hash function, to store the obtained first hash value H ^{1 in the} wafer.

In step S2, the first hash value H ^{1 is} added to the first time stamp signature by the time stamp server 52 to obtain the first set of time stamp numbers TSA ¹ by using the first time stamp signature. .

In step S3, the first set of time stamp numbers TSA ^{1 is} returned to be printed on the surface coating of the card (referred to as the first surface coating).

In step S4, the center pipe 20 into the card producing system key, thereby to serve together with the first key stored in the chip heteroaryl hash value ^{H. 1} to form a new block generator 51 to obtain a second hash value H ² .

In step S5, after the second hash value H ^{2 is} stored in the chip, the second hash value H ^{2 is} added to the second hash value by the time stamp server 52 as the second time stamp signature, and the second time stamp is used. The time stamp signature gets the second set of time stamp numbers TSA ² .

In step S6, the second set of time stamp serial numbers TSA ^{2 is} transmitted back to the card tube center 20 and printed on the surface coating of the card (referred to as the second surface coating).

In step S7, after the card arrives at the card making center 30, the card data file is downloaded through its database, so that the personal information is automatically generated by the host system through the program. The card-making file includes a card face image automatically generated by the system, an automatically distributed card number, a voucher data to be written to the cardholder, an initialization password, etc., and the card-making center 30 uses the voucher serial number plus the second hash value H ^{2 .} The third hash value H ^{3 is} obtained via the generator 51.

In step S8, after the third hash value H ^{3 is} stored in the wafer, the third hash value is added to the third hash value H ^{3 by the} time stamp server 52 to use the third time stamp. The stamp is stamped to obtain the third set of time stamp serial number TSA ³ .

In step S9, the third set of time stamp serial numbers TSA ^{3 is} passed back to the card making center 30 for printing on the surface coating of the card (referred to as a third surface coating).

In step S10, the verification module 13 is used to ensure the security of the card use. When the client needs to verify the authenticity of the card, the third set of time stamp number TSA ³ of the third surface coating of the card is read via the instrument and transmitted to the time stamp server 52.

In step S11, after the time stamp server 52 traces back the signature content H according to the time stamp serial number, the signature content is transmitted to the verification module 53.

In step S12, the verification module 53 compares the third hash value H ³ in the wafer content with the signature content H to verify whether they are equal.

And so on, after reading the second set of time stamp number TSA ² of the second surface coating of the card, that is, tracking the signature content H according to the time stamp serial number, and then the second hash value H ^{2 in the} wafer content Compare with the contents of the signature H. Similarly, after reading the first set of time stamp sequence numbers TSA ¹ , subsequent comparisons are performed.

Finally, the comparison result is transmitted back to the client in step S13.

The execution of the above verification steps is a step back to the signature of the process, verifying that the hash value is true to confirm that the data has not been tampered with, and to ensure the consistency of the client chip and the card entity.

2 is a flow chart for generating a first hash value H ¹ in step S1, a second hash value H ² in step S4, and a third hash value H ³ in step S7.

In step S1, a wafer serial number and an appearance number are processed by a hash function to obtain a first hash value H ¹ , and the first hash value H ^{1 is} stored in the wafer.

In step S4, H ² stored in the card via a central pipe 20 together with the first key to a hash value H ¹ consisting of a block generator 51 is transmitted to the hash function operation to obtain a second hash value Wafer.

In step S7, a third hash value H ³ is obtained by a card-making center 30 adding a second hash value H ^{2 to the} second hash value H ² via a hash function, and then storing the third hash value H ³ into the chip. in.

As described above, in step S1, step S4, and step S7, the card number is added to the hash value of the previous stroke to obtain a new hash value, and the new hash value is transmitted to the next serial number to form an updated hash. Value, so it can be used to form a closely related "block chain". Thus, as long as There is any tampering, that is, easy to find; in addition, each hash value generated is printed on the card surface by the time stamp server 52 combined with the time stamp serial number, and the time stamp server 52 is verified. Whether the content of the wafer is consistent with the card, and successfully reduces the risk of tampering.

Furthermore, the verification method provided by the present invention captures the important card serial numbers of each stage in the card making process, and combines with the hash values generated by the data of the previous stage to form a new hash value to form a closely related relationship. Block chain; in addition, the present invention is combined with card security printing, and after adding the hash value and the electronic time stamp and the digital signature, the obtained time stamp number is sequentially printed on the card coating to ensure the wafer content and the card. With completeness and consistency.

As shown in Fig. 3, it is a flowchart of card security verification according to the present invention, which is further described in steps S10 to S13 of Fig. 1.

In step S31, when the client transmits the card anti-counterfeiting verification request, the instrument reads the TSA value of the surface coating of the card.

In step S32, the signature content H is traced back according to the time stamp serial number TSA, and the signature content H is transmitted to the verification module 53.

In step S33, the verification module 53 compares the acquired signature content H with the hash value calculated from the relative data stored in the wafer.

In step S34, if they are equal, continue to check whether there are TSA values of other coatings for another hash value comparison verification. If yes, return to step S32, otherwise, end the process of card anti-counterfeiting verification.

For example, the signature content H traced by the third set of time stamp numbers TSA ^{3 of} the third surface coating is aligned with the corresponding third hash value H ^{3 in the} wafer, and the second set of the second surface coating is The signature content H traced back by the stamp number TSA ² is compared with the corresponding second hash value H ^{2 in the} wafer, and the signature content H of the first set of time stamp numbers TSA ^{1 of} the first surface coating is The corresponding first hash value H ^{1 in the} wafer is aligned. If there is an error in the comparison process, step S35 is performed to return an error message to the user terminal to convey the risk of the card being a fake card.

Compared with the conventional wafer anti-counterfeiting technology, the invention combines the wafer content and the card anti-counterfeiting printing, and uses the time stamp signature to print the time stamp serial number on the card coating as the verification basis, and the hash value of the card time stamp content is The closely related information formed by the unique serial number generated by a single card process step is connected in series, and the blockchain establishes the process sequence, which is decisive and irreversible.

Claims (10)

A method for verifying the combination of wafer content and card security printing, the method comprising: performing a first hash value by using a generator to calculate a first hash value by using a hash function and a skin number, and then depositing the first hash value In a wafer, the first hash value is used as a first time stamp signature to print a first set of time stamp numbers (TSAs) on the first one of the cards by using the first time stamp signature a surface coating; transmitting a key to the generator through a card center and adding the first hash value to the generator, and the generator performs the hash function operation to obtain a second hash value, the first After the two hash values are stored in the chip, the second hash value is used as a second time stamp signature to print a second set of time stamp numbers on the card using the second time stamp signature. a second surface coating; a card number is added to the second hash value through a card-making center to obtain a third hash value, and the third hash value is stored in the chip, and the first The three hash values are used as a third time stamp to be used The third time stamp signature obtains a third set of time stamp numbers printed on a third surface coating of the card; and through a verification module, according to the first, second and third prints on the card The first group, the second group and the third group of time stamp serial numbers in the surface coating, obtaining the signature contents in the first group, the second group and the third group time stamp serial number to verify the first of the wafer, The second and third hash values are the same as the signature content. The method of claim 1, wherein the hash function is an asymmetric hash function or a symmetric hash function. The method of claim 1, wherein the voucher number is at least one of a card face picture automatically generated by the system, an automatically distributed card number, a voucher data to be written to the cardholder, and an initialization password. The method of claim 1, wherein the first, second and third time stamp signatures respectively add time stamps to the first, second and third hash values via a time stamp server The serial number is generated. The method of claim 4, further comprising: continuously reading a time stamp number of each of the surface coatings to transmit the time stamp serial number to the time stamp server, such that the time stamp server is Each of the hash values corresponding to the time stamp number is successively transmitted to the verification module. The method of claim 1, further comprising: continuously reading the time stamp serial number of each surface coating layer; tracking a signature according to the time stamp serial number of each surface coating layer to The signature content is transmitted to the verification module; and the obtained signature content is compared with the hash value calculated by the relative data stored in the wafer through the verification module. The method of claim 6, wherein if the comparison result is the same, the verification module continues to check whether there is a time stamp serial number value of the other coating to perform another hash value comparison verification. The method of claim 6, wherein if the comparison result is different, the error message is sent back to the client. The method of claim 1, wherein the second surface coating is on the first surface coating. The method of claim 1, wherein the third surface coating is on the second surface coating.