CN106534079A - Method and system for safety processing of data files - Google Patents
Method and system for safety processing of data files Download PDFInfo
- Publication number
- CN106534079A CN106534079A CN201610913048.0A CN201610913048A CN106534079A CN 106534079 A CN106534079 A CN 106534079A CN 201610913048 A CN201610913048 A CN 201610913048A CN 106534079 A CN106534079 A CN 106534079A
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- sender
- plaintext
- key
- symmetric key
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- 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
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
- H04L63/045—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload wherein the sending and receiving network entities apply hybrid encryption, i.e. combination of symmetric and asymmetric encryption
-
- 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
- H04L63/12—Applying verification of the received information
- H04L63/126—Applying verification of the received information the source of the received data
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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Hardware Design (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Storage Device Security (AREA)
Abstract
The invention discloses a method for safety processing of data files. The method for safety processing of data files includes the steps: according to a message abstract algorithm, calculating a plaintext and obtaining the plaintext abstract and the system time; utilizing an asymmetric private key of a transmitter to make a signature on the plaintext abstract and the system time to obtain the signature cryptograph of the plaintext abstract and the system time; generating a symmetric key of the transmitter; utilizing the symmetric key of the transmitter to encrypt the plaintext to obtain the cryptograph; utilizing an asymmetric public key of a receiver to encrypt the symmetric key of the transmitter to obtain the encrypted symmetric key of the transmitter; and transmitting a data file including a triad <signature cryptograph, cryptograph encryption of symmetric key>. The technical scheme of the method and system for safety processing of data files utilizes the asymmetric key algorithm to encrypt the symmetric key, and carries out encryption and signature processing on the transmitted file, performs the abstract algorithm on the data file to obtain the file identifier information, and realizes safety processing of the data file.
Description
Technical field
The present invention relates to information security field, more particularly, to a kind of method for data file security process and
System.
Background technology
At present, the priority assignation mode of data base is mainly adopted to the safety of information in the office automation system, according to
User using rank arranging corresponding authority, encryption system is provided without to document, safety hardly results in guarantee.If
Rights management is carried out to each official document, this will greatly increase the work load of manager.Due to not adopting signature mechanism, official document
Recipient not can then verify that the verity of official document, and official document sender can also deny afterwards and send out official document, so can not be legally
Ensure the verity of official document, neither can guarantee that the identity of the person of signing and issuing, other people can carry out distorting to official document, very to sending out official document
To deletion, and recipient can not have found such case.The present invention is precisely in order to the safety of the information of increase.
The encryption technology emphasis that prior art is transmitted to data file arranges signature in sender and carries out to sending file
Encryption, but core is carried out with the fileinfo through decryption to the data file information for passing through signature not over digest algorithm
To technical scheme, prior art is it cannot be guaranteed that integrity of the data file in transmit process, it is impossible to prevent data file from existing
It is tampered in transmitting procedure.
The content of the invention
Technical scheme, there is provided a kind of method and system for data file security process, to solve number
According to encryption, identity of the sender certification in document transmission process and prevent the problem that data are tampered.
In order to solve the above problems, the invention provides a kind of method, methods described includes：
Plaintext is calculated according to Message Digest 5, obtain the plaintext summary and system time；
The plaintext is made a summary using sender's asymmetric privacy keys and system time is signed, obtain including the plaintext
The signature ciphertext of summary and system time；
Generate sender's symmetric key；
The plaintext is encrypted using sender's symmetric key, obtains ciphertext；
Sender's symmetric key is encrypted using recipient's asymmetric public key, obtains the sender through encryption
Symmetric key；
Transmission includes tlv triple<Signature ciphertext, ciphertext, encrypted symmetric key>Data file.
Preferably, the sender carries out asymmetric-key encryption using RAS algorithms with recipient.
Preferably, the sender carries out symmetric key encryption using Triple hybrid with recipient.
Based on embodiments of the present invention, the present invention provides a kind of method for being decrypted to data file, described
Method includes：
Reception includes tlv triple<Signature ciphertext, ciphertext, encrypted symmetric key>Data file；
The sender's symmetric key for passing through encryption is decrypted using recipient's asymmetric privacy keys, obtains sender symmetrical
Key；
The ciphertext data are decrypted using sender's symmetric key, obtain the decryption of plaintext after the decryption
Make a summary in plain text and the decryption system time；
The signature ciphertext is decrypted using sender's asymmetric public key, obtains the plaintext summary through decrypting and be
The system time；
According to the signature ciphertext is decrypted, obtain verifying identity of the sender.
Preferably, the sender carries out asymmetric-key encryption using RAS algorithms with recipient.
Preferably, the sender carries out symmetric key encryption using Triple hybrid with recipient.
Preferably, plaintext summary and the signature are made a summary in plain text and is compared, and decryption system time and label
Name system time is compared；If summary is identical with system time, prove that identity of the sender is true；Otherwise, identity of the sender
It is false.
Based on embodiments of the present invention, the present invention provides a kind of system for being encrypted to data file, described
System includes：
First signal generating unit, for being calculated to plaintext according to Message Digest 5, obtains the plaintext summary and is
The system time；
Signature unit, for being made a summary to the plaintext using sender's asymmetric privacy keys and system time is signed, is obtained
To the signature ciphertext including plaintext summary and system time；
Second signal generating unit, for generating sender's symmetric key；
First ciphering unit, for being encrypted to the plaintext using sender's symmetric key, obtains ciphertext；
Second ciphering unit, for being encrypted to sender's symmetric key using recipient's asymmetric public key, is obtained
Learnt from else's experience encryption sender's symmetric key；
Transmitting element, includes tlv triple for sending<Signature ciphertext, ciphertext, encrypted symmetric key>Data file.
Preferably, the sender carries out asymmetric-key encryption using RAS algorithms with recipient.
Preferably, the sender carries out symmetric key encryption using Triple hybrid with recipient.
Based on embodiments of the present invention, the present invention provides a kind of system for being decrypted to data file, described
System includes：
Receiving unit, includes tlv triple for receiving<Signature ciphertext, ciphertext, encrypted symmetric key>Data file；
First decryption unit, for being solved to the sender's symmetric key for passing through encryption using recipient's asymmetric privacy keys
It is close, obtain sender's symmetric key；
Second decryption unit, for being decrypted to the ciphertext data using sender's symmetric key, obtains institute
After stating decryption, the decrypted plaintext of plaintext is made a summary and the decryption system time；
3rd decryption unit, for using sender's asymmetric public key to it is described signature ciphertext be decrypted, obtain through
The plaintext summary of decryption and system time；
Authentication unit, is decrypted to the signature ciphertext for basis, obtains verifying identity of the sender.
Preferably, the sender carries out asymmetric-key encryption using RAS algorithms with recipient.
Preferably, the sender carries out symmetric key encryption using Triple hybrid with recipient.
Preferably, plaintext summary and the signature are made a summary in plain text and is compared, and decryption system time and label
Name system time is compared；If summary is identical with system time, prove that identity of the sender is true；Otherwise, identity of the sender
It is false.
Beneficial effects of the present invention are：
Technical scheme is encrypted to symmetric key using asymmetric key algorithm, and the file to transmitting is carried out
Encryption and signature are processed, and data file is carried out the safe place that digest algorithm acquisition file identification information realizes data file
Reason.Transmitting data file is carried out by technical scheme, data file recipient can examine sender to data
Signature, data file sender can not be denied the signature to data file, can prevent third party's data falsification file and signature,
And the integrity of data is verified by examining summary info.
Description of the drawings
By reference to the following drawings, the illustrative embodiments of the present invention can be more fully understood by：
Fig. 1 is a kind of method flow diagram for being encrypted to data file according to embodiment of the present invention；
Fig. 2 is a kind of system construction drawing for being encrypted to data file according to embodiment of the present invention；
Fig. 3 is a kind of method flow diagram for being decrypted to data file according to embodiment of the present invention；And
Fig. 4 is a kind of system construction drawing for being decrypted to data file according to embodiment of the present invention.
Specific embodiment
With reference now to accompanying drawing, the illustrative embodiments of the present invention are introduced, however, the present invention can be with many different shapes
Formula is implementing, and is not limited to embodiment described herein, there is provided these embodiments are to disclose at large and fully
The present invention, and the scope of the present invention is fully passed on to person of ordinary skill in the field.For showing for being illustrated in the accompanying drawings
Term in example property embodiment is not limitation of the invention.In the accompanying drawings, identical cells/elements are attached using identical
Icon is remembered.
Unless otherwise stated, term (including scientific and technical terminology) used herein has to person of ordinary skill in the field
It is common to understand implication.Further it will be understood that the term limited with the dictionary being usually used, is appreciated that and which
The linguistic context of association area has consistent implication, and is not construed as Utopian or excessively formal meaning.
Fig. 1 is a kind of method flow diagram for being encrypted to data file according to embodiment of the present invention.Such as Fig. 1
Shown, method 100 is for being encrypted to data file.The technical scheme of the method 100 of embodiment of the present invention is using non-right
Key algorithm is claimed to be encrypted symmetric key, the file to transmitting is encrypted and signature is processed, and data file is carried out
Digest algorithm obtains the safe handling that the identification informations such as plaintext document summary and system time realize data file.
Method 100 starts to walk from step 101：Plaintext is calculated according to Message Digest 5, obtain and make a summary and be in plain text
The system time.The ciphering process that is mainly characterized by of Message Digest 5 does not need key, and the data through encryption be solved
It is close, be only input into identical identical ciphertext can be just obtained through identical Message Digest 5 in plain text.Message Digest 5 is not
There is management and the distribution problem of key.
Step 102：Plaintext summary and system time are signed using sender's asymmetric privacy keys, obtain including in plain text
The signature ciphertext of summary and system time.Rivest, shamir, adelman is a kind of time slot scrambling of key, and rivest, shamir, adelman need to
Want two keys：Public key (publickey) and private key (privatekey).Public key and private key are a pair, if using public key logarithm
According to being encrypted, only could be decrypted with corresponding private key；If be encrypted to data with private key, then only with corresponding
Public key could be decrypted.Encryption uses two different keys with decryption.For example, rivest, shamir, adelman realizes confidential data
Information exchange basic process be：Sender generates a pair of secret keys and using therein one open to other sides as public key；
To the public key recipient confidential data information is encrypted using the key after be then forwarded to sender；Sender is again with certainly
Another data message after private key pair encryption that oneself preserves is decrypted.On the other hand, sender can use recipient's
Public key is then forwarded to recipient after signing to confidential data information；Recipient is tested to data with the private key of oneself again
Sign.Sender can only with the decryption of its private key by its public key encryption after any information.The confidentiality of rivest, shamir, adelman
Relatively good, it eliminates the needs that end user exchanges key.Rivest, shamir, adelman is while digital signature supporting, the present invention is in fact
The mode of applying sets up the process of signature：Sender builds key pair, public key and private key, and by public key publication to recipient, private key
Controlled oneself reservation by sender.Sender is encrypted to data using private key, then with the data signature after private key pair encryption, and
Data after encryption and signature are sent to into recipient.Recipient verifies data to be decrypted using the public key and signature of sender
Whether effectively, if data are effective, using sender's public key to data deciphering.Asymmetric encryption system does not require communicating pair thing
First transmit key or have any agreement just complete secret communication, and key management is convenient, is capable of achieving to prevent from palming off and deny,
Therefore, the secret communication requirement being more suitable in network service.Thus can transmit other side's as symmetric cryptography
Key, this processing mode safety are just big a lot.Embodiment of the present invention sender is entered using RAS algorithms with recipient
Row asymmetric-key encryption.
Step 103, generates sender's symmetric key.Symmetric key encryption is private key encryption, that is, send and receive number
According to both sides must using identical key to plaintext encrypt and decrypt computing.Embodiment of the present invention symmetric key encryption is calculated
Method is triple dess AES.Symmetric key is that both sides use identical key, it is necessary to key is transmitted in the form of being perfectly safe
Safety is can guarantee that.
Step 104, is encrypted to plaintext using sender's symmetric key, obtains ciphertext.
Step 105, is encrypted to sender's symmetric key using recipient's asymmetric public key, obtains sending out through encryption
The person's of sending symmetric key.
Step 106, sender sends includes tlv triple<Signature ciphertext, ciphertext, encrypted symmetric key>Data file, extremely
The encryption of this data and signature have been completed.
Fig. 2 is a kind of system construction drawing for being encrypted to data file according to embodiment of the present invention.System
200 include：First signal generating unit 201, for calculating to plaintext according to Message Digest 5, obtains summary and system in plain text
Time；Signature unit 202, for being signed to plaintext summary and system time using sender's asymmetric privacy keys, is wrapped
Include the signature ciphertext of summary and system time in plain text；Second signal generating unit 203, for generating sender's symmetric key；First adds
Close unit 204, for being encrypted to plaintext using sender's symmetric key, obtains ciphertext；Second ciphering unit 205, is used for
Sender's symmetric key is encrypted using recipient's asymmetric public key, obtains the sender's symmetric key through encryption；Send out
Unit 206 is sent, includes tlv triple for sending<Signature ciphertext, ciphertext, encrypted symmetric key>Data file.One kind is for right
The system 200 that data file is encrypted is corresponding for the method 100 that is encrypted to data file with a kind of, and here is no longer
Repeated.
Fig. 3 is a kind of method flow diagram 300 for being decrypted to data file according to embodiment of the present invention.This
The technical scheme of the method 300 of invention embodiment is decrypted to symmetric key using asymmetric key algorithm, to transmission
File is decrypted and signature verification process, and data file is carried out digest algorithm acquisition file identification information and by bright
Digest will and the file identification such as system time verified, realize the safe handling of data file.
From 301 startings, recipient receives includes tlv triple to flow process 300<Signature ciphertext, ciphertext, encrypted symmetric key>Number
According to file, and signature ciphertext, ciphertext, encrypted symmetric key are separately processed.
Step 302, is decrypted to the sender's symmetric key for passing through encryption using recipient's asymmetric privacy keys, is obtained and is sent out
The person's of sending symmetric key.Rivest, shamir, adelman is a kind of time slot scrambling of key.Rivest, shamir, adelman needs two keys：It is public
Key (publickey) and private key (privatekey).Public key and private key are a pair, if be encrypted to data with public key, only
Useful corresponding private key could be decrypted；If be encrypted to data with private key, then only could be decrypted with corresponding public key.
Encryption uses two different keys with decryption.For example, rivest, shamir, adelman realizes the base that confidential data information is exchanged
This process is：Sender generates a pair of secret keys and using therein one open to other sides as public key；Obtain connecing for the public key
Receipts person is then forwarded to sender after being encrypted to confidential data information using the key；It is another that sender is preserved with oneself again
Data message after private key pair encryption is decrypted.On the other hand, sender can use the public key of recipient to secret number
It is believed that breath is then forwarded to recipient after being signed；Recipient carries out sign test to data with the private key of oneself again.Sender can only
Any information after being decrypted by its public key encryption with its private key.The confidentiality of rivest, shamir, adelman is relatively good, and it eliminates
End user exchanges the needs of key.Rivest, shamir, adelman is while digital signature supporting, embodiment of the present invention foundation label
Name process be：Sender builds key pair, public key and private key, and by public key publication to recipient, private key is controlled oneself by sender
Retain.Sender is encrypted to data using private key, then with the data signature after private key pair encryption, and by the number after encryption
According to and signature be sent to recipient.Whether effectively recipient verifies data to be decrypted using the public key and signature of sender, such as
Fruit data are effective, using sender's public key to data deciphering.Asymmetric encryption system does not require that communicating pair transmits key in advance
Or have any agreement just complete secret communication, and key management is convenient, is capable of achieving to prevent from palming off and deny, therefore, it is more suitable
The secret communication closed in network service is required.The key of other side can be transmitted as symmetric cryptography thus, this
Plant processing mode safety just big a lot.Embodiment of the present invention sender is carried out asymmetric with recipient using RAS algorithms
Key is encrypted.
Ciphertext data are decrypted by step 303 using sender's symmetric key, obtain the decrypted plaintext of plaintext after decryption
Summary and decryption system time.Symmetric key encryption is private key encryption, that is, the both sides for sending and receiving data must use
Identical key encrypts and decrypts computing to plaintext.Embodiment of the present invention symmetric key encryption algorithm adds for triple dess
Close algorithm.Symmetric key is that both sides use identical key, it is necessary to key is transmitted in the form of being perfectly safe and just can guarantee that safety.
Step 304, is decrypted to ciphertext of signing using sender's asymmetric public key, obtains the plaintext summary through decrypting
And system time.
Step 305, according to ciphertext of signing is decrypted, obtains verifying identity of the sender.By plaintext summary with
Summary is compared signature in plain text, and the decryption system time was compared with the signature system time；If summary and system time
It is identical, then prove that identity of the sender is true；Otherwise, identity of the sender is false.
Fig. 4 is a kind of system construction drawing for being decrypted to data file according to embodiment of the present invention.Such as Fig. 4
Shown, system 400 includes：
Receiving unit 401, includes tlv triple for receiving<Signature ciphertext, ciphertext, encrypted symmetric key>Data file.
First decryption unit 402, for being entered to the sender's symmetric key for passing through encryption using recipient's asymmetric privacy keys
Row decryption, obtains sender's symmetric key.
Second decryption unit 403, for being decrypted to ciphertext data using sender's symmetric key, obtains bright after decrypting
The decrypted plaintext summary of text and decryption system time.
3rd decryption unit 404, for being decrypted to ciphertext of signing using sender's asymmetric public key, is obtained through solution
Close plaintext summary and system time.
Authentication unit 405, is decrypted to ciphertext of signing for basis, obtains verifying identity of the sender.
A kind of a kind of system 300 and method for being decrypted to data file for being decrypted to data file
400 is corresponding, and here is no longer repeated.
Technical scheme is encrypted to symmetric key using asymmetric key algorithm, and the file to transmitting is carried out
Encryption and signature are processed, and data file is carried out the safe place that digest algorithm acquisition file identification information realizes data file
Reason.Transmitting data file is carried out by technical scheme, data file recipient can examine sender to data
Signature, data file sender can not be denied the signature to data file, can prevent third party's data falsification file and signature,
And the integrity of data is verified by examining summary info.
The present invention is described by reference to a small amount of embodiment.However, it is known in those skilled in the art, as
What subsidiary Patent right requirement was limited, except the present invention other embodiments disclosed above equally fall the present invention's
In the range of.
Normally, all terms for using in the claims are all solved in the usual implication of technical field according to them
Release, unless clearly defined in addition wherein.It is all of to be all opened ground with reference to " one/described/be somebody's turn to do [device, component etc.] "
At least one of described device, component etc. example is construed to, unless otherwise expressly specified.Any method disclosed herein
Step all need not be run with disclosed accurate order, unless explicitly stated otherwise.
Claims (14)
1. a kind of method for being encrypted to data file, methods described include：
Plaintext is calculated according to Message Digest 5, obtain the plaintext summary and system time；
The plaintext is made a summary using sender's asymmetric privacy keys and system time is signed, obtain including the plaintext summary
And the signature ciphertext of system time；
Generate sender's symmetric key；
The plaintext is encrypted using sender's symmetric key, obtains ciphertext；
Sender's symmetric key is encrypted using recipient's asymmetric public key, obtains symmetrical through the sender of encryption
Key；
Transmission includes tlv triple<Signature ciphertext, ciphertext, encrypted symmetric key>Data file.
2. method according to claim 1, the sender carry out unsymmetrical key using RAS algorithms with recipient and add
It is close.
3. method according to claim 1, the sender carry out symmetric key using Triple hybrid with recipient and add
It is close.
4. a kind of method for being decrypted to data file, methods described include：
Reception includes tlv triple<Signature ciphertext, ciphertext, encrypted symmetric key>Data file；
The sender's symmetric key for passing through encryption is decrypted using recipient's asymmetric privacy keys, obtains sender symmetrically close
Key；
The ciphertext data are decrypted using sender's symmetric key, obtain the decrypted plaintext of plaintext after the decryption
Summary and decryption system time；
The signature ciphertext is decrypted using sender's asymmetric public key, is obtained when the plaintext summary and system decrypted
Between；
According to the signature ciphertext is decrypted, obtain verifying identity of the sender.
5. method according to claim 4, the sender carry out unsymmetrical key using RAS algorithms with recipient and add
It is close.
6. method according to claim 4, the sender carry out symmetric key using Triple hybrid with recipient and add
It is close.
7. method according to claim 4, the plaintext is made a summary and summary is compared the signature in plain text, and solution
Close system time was compared with the signature system time；If summary is identical with system time, prove that identity of the sender is true；It is no
Then, identity of the sender is false.
8. a kind of system for being encrypted to data file, the system include：
First signal generating unit, for being calculated to plaintext according to Message Digest 5, when obtaining the plaintext summary and system
Between；
Signature unit, for being made a summary to the plaintext using sender's asymmetric privacy keys and system time is signed, is wrapped
Include the signature ciphertext of the plaintext summary and system time；
Second signal generating unit, for generating sender's symmetric key；
First ciphering unit, for being encrypted to the plaintext using sender's symmetric key, obtains ciphertext；
Second ciphering unit, for being encrypted to sender's symmetric key using recipient's asymmetric public key, obtains Jing
Cross sender's symmetric key of encryption；
Transmitting element, includes tlv triple for sending<Signature ciphertext, ciphertext, encrypted symmetric key>Data file.
9. system according to claim 8, the sender carry out unsymmetrical key using RAS algorithms with recipient and add
It is close.
10. system according to claim 8, the sender and recipient carry out symmetric key using Triple hybrid
Encryption.
A kind of 11. systems for being decrypted to data file, the system include：
Receiving unit, includes tlv triple for receiving<Signature ciphertext, ciphertext, encrypted symmetric key>Data file；
First decryption unit, for being decrypted to the sender's symmetric key for passing through encryption using recipient's asymmetric privacy keys,
Obtain sender's symmetric key；
Second decryption unit, for being decrypted to the ciphertext data using sender's symmetric key, obtains the solution
The decrypted plaintext summary of close rear plaintext and decryption system time；
3rd decryption unit, for being decrypted to the signature ciphertext using sender's asymmetric public key, is obtained through decryption
Plaintext summary and system time；
Authentication unit, is decrypted to the signature ciphertext for basis, obtains verifying identity of the sender.
12. systems according to claim 11, the sender carry out unsymmetrical key using RAS algorithms with recipient and add
It is close.
13. systems according to claim 11, the sender and recipient carry out symmetric key using Triple hybrid
Encryption.
14. systems according to claim 11, the plaintext are made a summary and summary are compared the signature in plain text, and
The decryption system time was compared with the signature system time；If summary is identical with system time, prove that identity of the sender is true；
Otherwise, identity of the sender is false.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610913048.0A CN106534079A (en) | 2016-10-19 | 2016-10-19 | Method and system for safety processing of data files |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610913048.0A CN106534079A (en) | 2016-10-19 | 2016-10-19 | Method and system for safety processing of data files |
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ID=58332751
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| CN201610913048.0A Pending CN106534079A (en) | 2016-10-19 | 2016-10-19 | Method and system for safety processing of data files |
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| CN107070909A (en) * | 2017-04-01 | 2017-08-18 | 广东欧珀移动通信有限公司 | Method for sending information, message receiving method, apparatus and system |
| CN107231237A (en) * | 2017-06-02 | 2017-10-03 | 上海斐讯数据通信技术有限公司 | A kind of safe credit method and system |
| CN108764904A (en) * | 2018-05-25 | 2018-11-06 | 广东广发互联小额贷款股份有限公司 | It is a kind of distribution Accounting system in dual key theft preventing method |
| CN109818747A (en) * | 2018-12-28 | 2019-05-28 | 苏州科达科技股份有限公司 | Digital signature method and device |
| CN110213041A (en) * | 2019-04-26 | 2019-09-06 | 五八有限公司 | Data ciphering method, decryption method, device, electronic equipment and storage medium |
| CN110535868A (en) * | 2019-09-05 | 2019-12-03 | 山东浪潮商用系统有限公司 | Data transmission method and system based on Hybrid Encryption algorithm |
| CN110677382A (en) * | 2019-08-20 | 2020-01-10 | 中国平安财产保险股份有限公司 | Data security processing method, device, computer system and storage medium |
| CN111769934A (en) * | 2020-07-08 | 2020-10-13 | 深圳思凯微电子有限公司 | Data transmission method, system and computer readable storage medium |
| CN113127912A (en) * | 2021-05-07 | 2021-07-16 | 杭州天谷信息科技有限公司 | Method and system for data confidentiality and publication |
| CN113822531A (en) * | 2021-08-20 | 2021-12-21 | 华迪计算机集团有限公司 | Safety management and sequencing method and system for supervision items and electronic equipment |
| CN114760081A (en) * | 2020-12-28 | 2022-07-15 | 富泰华工业（深圳）有限公司 | File encryption and decryption method and device and electronic equipment |
| CN114978534A (en) * | 2022-05-16 | 2022-08-30 | 中国银行股份有限公司 | Authentication method and system for third party access, third party enterprise terminal and bank terminal |
| CN115442110A (en) * | 2022-08-31 | 2022-12-06 | 南方电网科学研究院有限责任公司 | Logic vulnerability protection method and system |
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