CN101588238A - Method for encrypting and decrypting certificate card in accreditation system - Google Patents
Method for encrypting and decrypting certificate card in accreditation system Download PDFInfo
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- CN101588238A CN101588238A CNA2008100380005A CN200810038000A CN101588238A CN 101588238 A CN101588238 A CN 101588238A CN A2008100380005 A CNA2008100380005 A CN A2008100380005A CN 200810038000 A CN200810038000 A CN 200810038000A CN 101588238 A CN101588238 A CN 101588238A
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Abstract
The invention relates to a method for encrypting and decrypting a certificate card in an accreditation system. The method comprises the following steps: step 1, encrypting a high-frequency card by a card sender; step 2, encrypting an ultrahigh-frequency card by the card sender; step 3, reading data of the high-frequency card; and step 4, reading the ultrahigh-frequency card for encrypting. The method utilizes the uniqueness of an identification marking number ID of the certificate card and a block number of a sector cipher block to generate ciphers of each sector of the certificate card, can effectively protect the safety of data in the certificate card, prevents forgery of the certificate card, and can combine and adopt a DES encrypting method and a digital signature encrypting and decrypting method so as to realize the different requirements of different application occasions to safe classes. The encrypting and decrypting method for the certificate card of the accreditation system can be widely applied to a plurality of fields of gate control, finance, physical distribution, intercommunion, and the like.
Description
Technical field
The present invention relates to a kind of method of encryption and decryption, particularly relate to the method for the encryption and decryption of certificate card in a kind of Accreditation System.
Background technology
DES Cipher (Data Encryption Standard) is a kind of cryptographic algorithm of IBM Corporation's development, NBS announced the data encryption standard that it is used as non-confidential departments in 1977, over 30 years, it is active on the stage of international secure communication always, has played the part of crucial role.DES is a block encryption algorithm, and he serves as that grouping is encrypted data with 64.DES also is a symmetry algorithm simultaneously: what encryption and decryption were used is same algorithm, its key length is 56 (because each the 8th all is used as parity check), key can be 56 a number arbitrarily, and change arbitrarily the time, wherein there is the number of minute quantity to be considered to weak key, but is easy to avoid them.So the confidentiality of DES cryptographic system depends on key.
Rsa encryption, decipherment algorithm are with the naming of its inventor Ron Rivest, Adi Shamir and LeonardAdleman, and it is that first can be used for the algorithm that data encryption also can be used for digital signature.RSA is a kind of asymmetrical encryption and decryption technique, adopts different encryption key and decruption key, and a key is open to the public, is called PKI, and a privately owned preservation is called private key.The information of crossing by public key encryption has only by private key and just can be decrypted.
At present at home, all kinds of encrypting and decrypting algorithms are widely used in fields such as electronic consumption system POS (point of sale), ATM ATM (Automated Teller Machine), magnetic card and smart card (integrated circuit card IC), gas station, freeway toll stations, realize maintaining secrecy of critical data with this.In the Accreditation System des encryption, rsa encryption, RSA deciphering and key dispersion technology have been adopted in the encryption and decryption of card,, made illegal molecule ease down to minimum the influence that system is caused of duplicating, attack of card by the integrated application of above technology.
Summary of the invention
The method that the purpose of this invention is to provide the encryption and decryption of certificate card in a kind of Accreditation System, this method can effectively be protected the safety of data in the certificate card, prevents the forgery of certificate card, can realize the requirement that the different application occasion is different to safe class.
In order to achieve the above object, technical scheme of the present invention is: the method for the encryption and decryption of certificate card in a kind of Accreditation System may further comprise the steps:
Step 4 reads the hyperfrequency card and encrypts.
The method of the encryption and decryption of certificate card in the above-mentioned Accreditation System, wherein, described step 1 comprises following steps:
Step 1.1 is provided with i=0, and wherein i is used to identify sector number, and 0≤i＜N, N are total sector number,
Step 1.2, the password A and the password B of i sector of generation high frequency card,
Step 1.3, i=i+1,
Whether step 1.4 judges i less than N, if, get back to step 1.2 for being, if be that then execution in step 1.5,
Step 1.5 is judged the safe class of using the certificate card, if use the safe class rank height of certificate card, execution in step 1.6 if use the safe class rank of certificate card general, then finishes to encrypt,
Step 1.6 adopts RSA Algorithm, encrypts expressly carrying out digital signature.
The method of the encryption and decryption of certificate card in the above-mentioned Accreditation System, wherein, described step 1.2 comprises following steps:
Step 1.2.1, indicating number ID with sector cryptographic block piece number and high frequency card identity is be-encrypted data, promptly expressly,
Step 1.2.2 calls the be-encrypted data that the DES crypto module encrypting step 1.2.1 of the 0X11 of secure access module SAM (security access module) generates, and obtains ciphertext,
Step 1.2.3, the data of 6 bytes in front of getting the ciphertext that step 1.2.2 obtains are as this sector password A,
Step 1.2.4, indicating number ID with sector cryptographic block piece number and high frequency card identity is be-encrypted data, promptly expressly,
Step 1.2.5 calls the be-encrypted data that the DES Cipher encrypting module encrypting step 1.2.4 of the 0X12 of SAM generates, and obtains ciphertext,
Step 1.2.6, the data of 6 bytes in front of getting the ciphertext that step 1.2.5 obtains are as this sector password B.
The method of the encryption and decryption of certificate card in the above-mentioned Accreditation System, wherein, described step 2 comprises following steps:
Step 2.1, card sender sticks into row by SAM and authorizes, and the SAM card has loaded key two covers, is called key X and Y, and key X and Y are 8 bytes,
Step 2.2, card sender read hyperfrequency card identity and indicate number ID (4 bytes), and additional 0X80,0X00, and 0X00,0X00 to 8 byte generates expressly,
Step 2.3, the plaintext that card sender uses key X that step 2.2 is generated are carried out the DES Cipher encryption, and getting preceding 4 bytes of ciphertext is hyperfrequency card password area password,
Step 2.4, card sender use key X that the plaintext that step 2.2 generates is carried out des encryption, produce 8 byte ciphertexts,
Step 2.5, the encrypted result that hyperfrequency card identity is indicated number ID and step 2.4 is packed, and the result after will packing writes electric product coding EPC district, lock,
Step 2.6, the password that step 2.3 is produced writes hyperfrequency card password area, and locks.
The method of the encryption and decryption of certificate card in the above-mentioned Accreditation System, wherein, described step 3 comprises following steps:
Step 3.1 is reset i=0,
Step 3.2 regenerates the password A and the password B of i sector of certificate card, is used for reading the high frequency card data as the Card Reader password,
Step 3.3, i=i+1,
Whether step 3.4 judges i less than N, if for being, get back to step 3.2, if be that then execution in step 3.5;
Step 3.5 judge to be used the safe class of certificate card, if use the safe class rank height of certificate card, and execution in step 3.6, if use the safe class rank of certificate card general, end operation then;
Step 3.6 adopts RSA Algorithm, carries out digital signature and is decrypted.
The method of the encryption and decryption of certificate card in the above-mentioned Accreditation System, wherein, among step 1.2.1 and the step 1.2.4, what produce high frequency card password area password expressly is the combination that high frequency card identity indicates number ID and high frequency card production firm information.
The method of the encryption and decryption of certificate card in the above-mentioned Accreditation System, wherein, plaintext among step 1.2.1 and the step 1.2.4 is the combination that high frequency card identity indicates number ID, production firm's information and high frequency card image, perhaps be the partial data of the interior unique non-programmable of high frequency card.
The method of the encryption and decryption of certificate card in the above-mentioned Accreditation System, wherein, described step 1.6 may further comprise the steps:
Step 1.6a to expressly carrying out the RSA1024 encrypted private key, produces the 1024Bit signed data.
The method of the encryption and decryption of certificate card in the above-mentioned Accreditation System, wherein, described step 3.6 may further comprise the steps:
Step 3.6a carries out the deciphering of RSA1024 PKI to high frequency card 1024Bit signed data, produces the 1024Bit clear data, gets front certain-length data and high frequency card identity sign number ID and mates the certifying signature legitimacy.
The method of the encryption and decryption of certificate card in the above-mentioned Accreditation System, wherein, described step 1.6 may further comprise the steps:
Step 1.6b to expressly carrying out the RSA1024 public key encryption, produces the 1024Bit signed data.The method of the encryption and decryption of certificate card in the above-mentioned Accreditation System, wherein, described step 3.6 may further comprise the steps:
Step 3.6b carries out the deciphering of RSA1024 private key to high frequency card 1024Bit signed data, produces the 1024Bit clear data, gets front certain-length data and high frequency card identity sign number ID and mates the certifying signature legitimacy.
The method of the encryption and decryption of certificate card in the above-mentioned Accreditation System, wherein, in the described step 1.6, expressly be that high frequency card identity indicates number ID, perhaps high frequency card identity indicates the combination of number ID and production firm's code, perhaps be all or partial data of interior first sector of high frequency card.
The method of the encryption and decryption of certificate card in the above-mentioned Accreditation System wherein, in described step 1.6 and the step 3.6, when adopting RSA asymmetric encryption decipherment algorithm, is not limited to 1024.
The present invention makes it compared with prior art owing to adopt technique scheme, has following advantage and good effect:
1, since in the Accreditation System of the present invention the method for encryption and decryption of certificate card utilize certificate card identity to indicate the uniqueness of number ID; make unauthorized person duplicate card, crack the card data district, obtain the threat that the illegal act of some critical data causes system safety and reduce to minimum; can effectively protect the safety of data in the certificate card, prevent the forgery of certificate card.
2, because the method for the encryption and decryption of certificate card can des encryption method and digital signature be encrypted, decryption method in conjunction with adopting in the Accreditation System of the present invention, can realize the requirement that the different application occasion is different to safe class.
Description of drawings
Fig. 1 is the flow chart of the method for the encryption and decryption of certificate card in the Accreditation System of the present invention.
Fig. 2 is the structural representation of high frequency card sector 0.
Fig. 3 is the method medium-high frequency card encryption flow figure of the encryption and decryption of certificate card in the Accreditation System of the present invention.
Fig. 4 is hyperfrequency card encryption flow figure in the method for the encryption and decryption of certificate card in the Accreditation System of the present invention.
Embodiment
Below specify better embodiment of the present invention referring to accompanying drawing:
Referring to Fig. 1, the method for the encryption and decryption of certificate card in a kind of Accreditation System of the present invention may further comprise the steps:
Step 4 reads the hyperfrequency card and encrypts.
In the present embodiment, integrated high frequency card of certificate card and hyperfrequency card.Wherein, the high frequency card is a kind of encryption storage card, has 40 sectors in the card, is named as 0～sector, sector 39, and each sector of 0～sector, sector 31 comprises 4 pieces, and each sector of 32～sector, sector 39 comprises 16 pieces.In each sector, last piece is a cryptographic block, and the piece of front is a data block.Cryptographic block comprises password A and password B, by password is authenticated, guarantees the legitimacy to the data operation.
The hyperfrequency card meets EPC GEN2 standard, and memory space is: MB00 is password area (64bit); MB01 is electric product coding EPC district (128bit); MB10 is for the label identity indicates number TID district (32bit); MB11 is user information field (224bit).Wherein label ID is ROM, can not change after dispatching from the factory, and the label ID whole world is unique; Password area, EPC district and user information field all can conduct the locking operations, and the locking back must just can be carried out by authentication password district password the modification of card data.
Referring to Fig. 2, be the composition structure that example is introduced the sector in detail with sector 0.There are 4 pieces this sector, and piece number is respectively 0X00,0X01,0X02 and 0X03, and 0X00～0X02 is a data block, and 0X03 is a cryptographic block.Cryptographic block 0X03 comprises password A, password B and cipher control position.
During encryption, card sender is encrypted the high frequency card and the hyperfrequency card of certificate card respectively; During deciphering, read the high frequency card of certificate card and the data in the hyperfrequency card respectively.
During encryption, card sender is encrypted each sector of the high frequency card of certificate card earlier one by one, generates each sector password A and password B, the hyperfrequency card of certificate card is encrypted again, and generates the password in UCODE hyperfrequency clip pin district, and locks.
Referring to Fig. 3, Fig. 4, the method for the encryption and decryption of certificate card in a kind of Accreditation System of the present invention may further comprise the steps:
Step 1.1 is provided with i=0, and wherein i is used to identify sector number, and 0≤i＜N, N are total sector number,
Step 1.2, the password A and the password B of i sector of generation certificate card,
Step 1.2.1, indicating number ID with sector cryptographic block piece number and high frequency card identity is be-encrypted data, promptly expressly,
Step 1.2.2 calls the be-encrypted data that the DES crypto module encrypting step 1.2.1 of the 0X11 of secure access module SAM (security access module) generates, and obtains ciphertext,
Step 1.2.3, the data of 6 bytes in front of getting the ciphertext that step 1.2.2 obtains are as this sector password A,
Step 1.2.4, indicating number ID with sector cryptographic block piece number and high frequency card identity is be-encrypted data, promptly expressly,
Step 1.2.5 calls the be-encrypted data that the des encryption module encrypt step 1.2.4 of the 0X12 of SAM generates, and obtains ciphertext,
Step 1.2.6, the data of 6 bytes in front of getting the ciphertext that step 1.2.5 obtains are as this sector password B,
Step 1.3, i=i+1,
Whether step 1.4 judges i less than N, if, get back to step 1.2 for being, if be that then execution in step 1.5,
Step 1.5 is judged the safe class of using the certificate card, if use the safe class rank height of certificate card, execution in step 1.6 if use the safe class rank of certificate card general, then finishes to encrypt,
Step 1.6 adopts RSA Algorithm, encrypts expressly carrying out digital signature;
Step 2.1, card sender sticks into row by SAM and authorizes, and the SAM card has loaded key two covers, is called key X and Y, and key X and Y are 8 bytes,
Step 2.2, card sender read hyperfrequency card identity and indicate number ID (4 bytes), and additional 0X80,0X00,0X00,0X00 to 8 byte, generate expressly, (DES is a block encryption, and each plaintext of encrypting must be 8 bytes, if less than 8 bytes will be carried out polishing, method is to add 0X80 earlier, just finishes if supplied 8 bytes after adding, if go back less than 8 bytes, just continue to mend 0X00, until 8 bytes)
Step 2.3, card sender use key X that the plaintext that step 2.2 generates is carried out des encryption, and getting preceding 4 bytes of ciphertext is hyperfrequency card password area password,
Step 2.4, card sender use key X that the plaintext that step 2.2 generates is carried out des encryption, produce 8 byte ciphertexts,
Step 2.5, the encrypted result that hyperfrequency card identity is indicated number ID and step 2.4 is packed, and the result after will packing writes the EPC district, lock,
Step 2.6, the password that step 2.3 is produced writes hyperfrequency card password area, and locks;
Step 3.1 is reset i=0,
Step 3.2 regenerates the password A and the password B of i sector of certificate card, is used for reading the high frequency card data as the Card Reader password,
Step 3.3, i=i+1,
Whether step 3.4 judges i less than N, if for being, get back to step 3.2, if be that then execution in step 3.5;
Step 3.5 judge to be used the safe class of certificate card, if use the safe class rank height of certificate card, and execution in step 3.6, if use the safe class rank of certificate card general, end operation then;
Step 3.6 adopts RSA Algorithm, carries out digital signature and is decrypted;
Step 4 reads the hyperfrequency card data.
Among step 1.2.1 and the step 1.2.4, the plaintext that produces high frequency card password area password can also be the combination that high frequency card identity indicates number ID and high frequency card production firm information, indicates the combination of number ID and production firm's code as high frequency card identity; Also can be the combination that high frequency card identity indicates number ID, production firm's information and card image, indicate the combination of number ID, production firm's code and high frequency card lot number as high frequency card identity.
Among step 1.2.1 and the step 1.2.4, the plaintext that produces high frequency card password area password can also be the partial data of non-programmable unique in the high frequency card.
Among step 1.2.1 and the step 1.2.4, can also be the 3DES cryptographic algorithm to encryption method expressly.
In the step 1.6, expressly can also be the combination that high frequency card identity indicates number ID and production firm's code, also can be all or partial data of first sector in the high frequency card.
The encryption that also can use public-key of the method for described digital signature encryption and decryption uses private key to verify, in addition, when adopting RSA asymmetric encryption decipherment algorithm, is not limited to 1024.
The packing form of described step 2.5 is:
Title: TID TIDxor CIPHERTEXT VERSION CRC_16
Length: 418 (step 2.4 generations) 12
Wherein, TIDxor is that 4 byte hyperfrequency card identity sign number ID carries out the exclusive or check result, VERSION key version number, and CRC_16 is the CRC check result of 16 bytes in front.
The method of the encryption and decryption of certificate card utilizes the card identity to indicate the uniqueness of number ID in the Accreditation System of the present invention, makes unauthorized person duplicate card, cracks the card data district, obtains the threat that the illegal act of some critical data causes system safety and reduce to minimum.
The present invention makes the method for the encryption and decryption of certificate card in the Accreditation System can verify the different passwords of card according to the difference of card use occasion, realizes different safe classes.As the situation safe class is required, whether the DES ciphertext of checking card is legal, and when requiring the application of high safety grade, the digital signature of checking card.Adopt said method, realized the requirement that different application is different to safe class.
The method of the encryption and decryption of certificate card can be widely used in multiple fields such as gate inhibition, finance, logistics, interchange in the Accreditation System of the present invention.
Claims (13)
1, the method for the encryption and decryption of certificate card in a kind of Accreditation System is characterized in that, may further comprise the steps:
Step 1, card sender is encrypted the high frequency card;
Step 2, card sender is encrypted the hyperfrequency card;
Step 3 reads the high frequency card data;
Step 4 reads the hyperfrequency card and encrypts.
2, the method for the encryption and decryption of certificate card in the Accreditation System as claimed in claim 1 is characterized in that described step 1 comprises following steps:
Step 1.1 is provided with i=0, and wherein i is used to identify sector number, and 0≤i＜N, N are total sector number,
Step 1.2, the password A and the password B of i sector of generation high frequency card,
Step 1.3, i=i+1,
Whether step 1.4 judges i less than N, if, get back to step 1.2 for being, if be that then execution in step 1.5,
Step 1.5 is judged the safe class of using the certificate card, if use the safe class rank height of certificate card, execution in step 1.6 if use the safe class rank of certificate card general, then finishes to encrypt,
Step 1.6 adopts RSA Algorithm, encrypts expressly carrying out digital signature.
3, the method for the encryption and decryption of certificate card in the Accreditation System as claimed in claim 2 is characterized in that described step 1.2 comprises following steps:
Step 1.2.1, indicating number ID with sector cryptographic block piece number and high frequency card identity is be-encrypted data, promptly expressly,
Step 1.2.2 calls the be-encrypted data that the DES crypto module encrypting step 1.2.1 of the OX11 of secure access module SAM (security access module) generates, and obtains ciphertext,
Step 1.2.3, the data of 6 bytes in front of getting the ciphertext that step 1.2.2 obtains are as this sector password A,
Step 1.2.4, indicating number ID with sector cryptographic block piece number and high frequency card identity is be-encrypted data, promptly expressly,
Step 1.2.5 calls the be-encrypted data that the DES Cipher encrypting module encrypting step 1.2.4 of the OX12 of SAM generates, and obtains ciphertext,
Step 1.2.6, the data of 6 bytes in front of getting the ciphertext that step 1.2.5 obtains are as this sector password B.
4, the method for the encryption and decryption of certificate card in the Accreditation System as claimed in claim 1 is characterized in that described step 2 comprises following steps:
Step 2.1, card sender sticks into row by SAM and authorizes, and the SAM card has loaded key two covers, is called key X and Y, and key X and Y are 8 bytes,
Step 2.2, card sender read hyperfrequency card identity and indicate number ID (4 bytes), and additional OX80, OX00, and OX00, OX00 to 8 byte generates expressly,
Step 2.3, the plaintext that card sender uses key X that step 2.2 is generated are carried out the DES Cipher encryption, and getting preceding 4 bytes of ciphertext is hyperfrequency card password area password,
Step 2.4, card sender use key X that the plaintext that step 2.2 generates is carried out des encryption, produce 8 byte ciphertexts,
Step 2.5, the encrypted result that hyperfrequency card identity is indicated number ID and step 2.4 is packed, and the result after will packing writes electric product coding EPC district, lock,
Step 2.6, the password that step 2.3 is produced writes hyperfrequency card password area, and locks.
5, the method for the encryption and decryption of certificate card in the Accreditation System as claimed in claim 1 is characterized in that described step 3 comprises following steps:
Step 3.1 is reset i=0,
Step 3.2 regenerates the password A and the password B of i sector of certificate card, is used for reading high frequency S70 card data as the Card Reader password,
Step 3.3, i=i+1,
Whether step 3.4 judges i less than N, if for being, get back to step 3.2, if be that then execution in step 3.5;
Step 3.5 judge to be used the safe class of certificate card, if use the safe class rank height of certificate card, and execution in step 3.6, if use the safe class rank of certificate card general, end operation then;
Step 3.6 adopts RSA Algorithm, carries out digital signature and is decrypted.
6, the method for the encryption and decryption of certificate card in the Accreditation System as claimed in claim 2, it is characterized in that, among step 1.2.1 and the step 1.2.4, what produce high frequency card password area password expressly is the combination that high frequency card identity indicates number ID and high frequency card production firm information.
7, the method for the encryption and decryption of certificate card in the Accreditation System as claimed in claim 2, it is characterized in that, plaintext among step 1.2.1 and the step 1.2.4 is the combination that high frequency card identity indicates number ID, production firm's information and high frequency card image, perhaps be the partial data of the interior unique non-programmable of high frequency card.
8, the method for the encryption and decryption of certificate card in the Accreditation System as claimed in claim 2 is characterized in that described step 1.6 may further comprise the steps:
Step 1.6a to expressly carrying out the RSA1024 encrypted private key, produces the 1024Bit signed data.
9, the method for the encryption and decryption of certificate card in the Accreditation System as claimed in claim 5 is characterized in that described step 3.6 may further comprise the steps:
Step 3.6a carries out the deciphering of RSA1024 PKI to high frequency card 1024Bit signed data, produces the 1024Bit clear data, gets front certain-length data and high frequency card identity sign number ID and mates the certifying signature legitimacy.
10, the method for the encryption and decryption of certificate card in the Accreditation System as claimed in claim 2 is characterized in that described step 1.6 may further comprise the steps:
Step 1.6b to expressly carrying out the RSA1024 public key encryption, produces the 1024Bit signed data.
11, the method for the encryption and decryption of certificate card in the Accreditation System as claimed in claim 5 is characterized in that described step 3.6 may further comprise the steps:
Step 3.6b carries out the deciphering of RSA1024 private key to high frequency card 1024Bit signed data, produces the 1024Bit clear data, gets front certain-length data and high frequency card identity sign number ID and mates the certifying signature legitimacy.
12, as the method for the encryption and decryption of certificate card in claim 8 or the 10 described Accreditation Systems, it is characterized in that, in the described step 1.6, expressly be that high frequency card identity indicates number ID, perhaps high frequency card identity indicates the combination of number ID and production firm's code, perhaps be all or partial data of interior first sector of high frequency card.
13, as the method for the encryption and decryption of certificate card in the described Accreditation System one of in the claim 8,9,10,11, it is characterized in that, in described step 1.6 and the step 3.6, when adopting RSA asymmetric encryption decipherment algorithm, be not limited to 1024.
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| CNA2008100380005A CN101588238A (en) | 2008-05-23 | 2008-05-23 | Method for encrypting and decrypting certificate card in accreditation system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103138932A (en) * | 2011-12-05 | 2013-06-05 | 中兴通讯股份有限公司 | Allocation method of mifare card sector secret key and allocation system of mifare card sector secret key |
| CN103136798A (en) * | 2012-12-16 | 2013-06-05 | 四川久远新方向智能科技有限公司 | One-way ticket card security control method of rail transit automatic ticket selling and checking system |
| CN104408377A (en) * | 2014-10-29 | 2015-03-11 | 北京锐安科技有限公司 | Evidence data hidden storage method and device |
| CN105717423A (en) * | 2016-01-19 | 2016-06-29 | 深圳友铂科技有限公司 | 10kV cable partial discharge on-line monitoring and positioning system with encryption function |
| CN114360110A (en) * | 2022-01-06 | 2022-04-15 | 广东汇泰龙科技股份有限公司 | IC card encryption method, IC card verification method, device, equipment and medium |
| CN117612280A (en) * | 2023-11-22 | 2024-02-27 | 深圳联恒智控科技有限公司 | CPU card security algorithm and system applied to intelligent door lock |
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2008
- 2008-05-23 CN CNA2008100380005A patent/CN101588238A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103138932A (en) * | 2011-12-05 | 2013-06-05 | 中兴通讯股份有限公司 | Allocation method of mifare card sector secret key and allocation system of mifare card sector secret key |
| CN103138932B (en) * | 2011-12-05 | 2016-01-20 | 中兴通讯股份有限公司 | The collocation method of a kind of Mifare card sector key and system |
| CN103136798A (en) * | 2012-12-16 | 2013-06-05 | 四川久远新方向智能科技有限公司 | One-way ticket card security control method of rail transit automatic ticket selling and checking system |
| CN103136798B (en) * | 2012-12-16 | 2016-04-27 | 四川久远新方向智能科技有限公司 | The method of controlling security of rail traffic ticket automatic selling and checking system one-way ticket card |
| CN104408377A (en) * | 2014-10-29 | 2015-03-11 | 北京锐安科技有限公司 | Evidence data hidden storage method and device |
| CN105717423A (en) * | 2016-01-19 | 2016-06-29 | 深圳友铂科技有限公司 | 10kV cable partial discharge on-line monitoring and positioning system with encryption function |
| CN114360110A (en) * | 2022-01-06 | 2022-04-15 | 广东汇泰龙科技股份有限公司 | IC card encryption method, IC card verification method, device, equipment and medium |
| CN117612280A (en) * | 2023-11-22 | 2024-02-27 | 深圳联恒智控科技有限公司 | CPU card security algorithm and system applied to intelligent door lock |
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