CN105208038B - A kind of encryption method and device - Google Patents
A kind of encryption method and device Download PDFInfo
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- CN105208038B CN105208038B CN201510653733.XA CN201510653733A CN105208038B CN 105208038 B CN105208038 B CN 105208038B CN 201510653733 A CN201510653733 A CN 201510653733A CN 105208038 B CN105208038 B CN 105208038B
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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
- H04L63/0435—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 symmetric encryption, i.e. same key used for encryption and decryption
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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
- H04L63/0442—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 asymmetric encryption, i.e. different keys for encryption and decryption
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Abstract
The present invention relates to field of encryption, a kind of encryption method and device are specifically provided.The encryption method includes：Plaintext to be encrypted is divided into multiple plaintext sections；Key or key pair are matched for the multiple plaintext section, a key or key pair correspond to a plaintext section；The plaintext in different sections is encrypted with matched key or the public key of cipher key pair.The encryption method and device provided through the invention can effectively increase the complexity of decryption, improve cipher safety, while ensureing being rapidly completed for encryption process.
Description
Technical field
The present invention relates to field of encryption, in particular to a kind of encryption method and device.
Background technology
In traditional encryption method, it is desirable to increase the complexity of decryption, is generally encrypted using more complicated key,
Such as data encryption algorithm (Data Encryption Algorithm, DEA), can be increased using 32,64,128 keys
The complexity of encryption and decryption improves safety.However, by way of improving the complexity of key, in the complexity for reinforcing encryption and decryption
While spending, it is also substantially increased operand, causes the efficiency of encryption process to reduce, the speed of service is slack-off.Internet
Epoch, Internet user also have higher requirement, the speed of encryption and decryption while focusing on safety, for the speed of encryption and decryption
Slowly, the experience of user is influenced.
Invention content
In view of this, the embodiment of the present invention is designed to provide a kind of encryption method and device, with to improve decryption multiple
It is miscellaneous while spend, ensure the speed of encryption and decryption.
In a first aspect, an embodiment of the present invention provides a kind of encryption method, include the following steps：
Plaintext to be encrypted is divided into multiple plaintext sections；
Key or key pair are matched for the multiple plaintext section, a key or key pair correspond to a plaintext section；
The plaintext in different sections is encrypted with matched key or the public key of cipher key pair.
With reference to first aspect, an embodiment of the present invention provides the first possible embodiments of first aspect, wherein institute
It states and matches key or key pair for multiple plaintext sections, including：It is followed successively by according to preset periodic function formula multiple bright
Literary section matching key or key pair.
The possible embodiment of with reference to first aspect the first, an embodiment of the present invention provides second of first aspect
Possible embodiment, wherein it is described to be encrypted as symmetric cryptography,
It is described that plaintext to be encrypted is divided into multiple plaintext sections, it is followed successively by according to preset periodic function formula
Multiple plaintext sections matching keys or key pair, a key or key pair correspond to a plaintext section, with matched key or
The plaintext in different sections is encrypted in the public key of cipher key pair, including：
Plaintext to be encrypted is divided into different plaintext sections, each plaintext section corresponds to a basic value；
One basic value is brought into the preset periodic function formula, an output valve is obtained, from preset
The corresponding key of the output valve is extracted in one group key, it is corresponding that the key extracted corresponds to the basic value
Plaintext section；
It is encrypted by the corresponding plaintext section of basic value described in the key pair extracted；
Basic value is replaced, and the basic value after replacement is brought into the periodic function formula, obtains corresponding output valve,
The corresponding key of the corresponding output valve is extracted from a preset group key；
The corresponding plaintext section encryption of basic value after being replaced by the key pair extracted；
The replacement basic value is repeated, and the basic value after replacement is brought into the periodic function formula, is corresponded to
Output valve, the corresponding key of the corresponding output valve is extracted from a preset group key, it is close by what is extracted
The step of key encrypts the basic value corresponding plaintext section after replacement, until all plaintext sections are encrypted.
The possible embodiment of with reference to first aspect the first, an embodiment of the present invention provides the third of first aspect
Possible embodiment, wherein it is described that plaintext to be encrypted is divided into multiple plaintext sections, according to preset period letter
Number formula is followed successively by multiple plaintext section matching keys or key pair, and a key or key pair correspond to a plaintext section, use
The plaintext in different sections is encrypted in matched key or the public key of cipher key pair, including：
Plaintext to be encrypted is divided into different plaintext sections, each plaintext section corresponds to a basic value；
One basic value is brought into the preset periodic function formula, an output valve is obtained, from preset
The corresponding key pair of the output valve is extracted in one group key centering, and the key pair extracted corresponds to the basic value
Corresponding plaintext section；
The corresponding plaintext section of the basic value is encrypted by the public key of the cipher key pair extracted；
Basic value is replaced, and the basic value after replacement is brought into the periodic function formula, obtains corresponding output valve,
The corresponding key pair of the corresponding output valve is extracted from preset group key centering；
The corresponding plaintext section of basic value after replacement is encrypted by the public key of the cipher key pair extracted；
The replacement basic value is repeated, and the basic value after replacement is brought into the periodic function formula, is corresponded to
Output valve, from the corresponding key pair of the preset group key centering extraction corresponding output valve, by extracting
The public key of the cipher key pair the step of corresponding plaintext section of basic value after replacement is encrypted, until all plaintext sections are equal
Until being encrypted.
With reference to first aspect second or the third possible embodiment, the embodiment of the present invention additionally provide first party
The 4th kind of possible embodiment in face, wherein the basic value is time variable or plaintext siding-to-siding block length variable.
With reference to first aspect second or the third possible embodiment, the embodiment of the present invention additionally provide first party
The 5th kind of possible embodiment in face, wherein the periodic function formula is trigonometric function or fourier function.
Second aspect, an embodiment of the present invention provides a kind of encryption devices, including：
Plaintext division unit：For plaintext to be encrypted to be divided into multiple plaintext sections；
Cipher key match unit：For matching key or key pair, a key or key pair for the multiple plaintext section
A corresponding plaintext section；
Encryption unit：For the plaintext in different sections to be encrypted with the public key of matched key or cipher key pair.
In conjunction with second aspect, an embodiment of the present invention provides the first possible embodiments of second aspect, wherein institute
Cipher key match unit is stated to be specifically used for：According to preset periodic function formula be followed successively by multiple plaintext sections matching keys or
Key pair, a key or key pair correspond to a plaintext section.
In conjunction with the first possible embodiment of second aspect, an embodiment of the present invention provides second of second aspect
Possible embodiment, wherein it is described to be encrypted as symmetric cryptography,
The plaintext division unit is specifically used for, and plaintext to be encrypted is divided into different plaintext sections, each described
Plaintext section corresponds to a basic value；
The cipher key match unit is specifically used for, and brings the corresponding basic value in each plaintext section into described set in advance successively
In fixed periodic function formula, an output valve is obtained, it is one corresponding that the output valve is extracted from a preset group key
Key, the key extracted correspond to the corresponding plaintext section of the basic value；
The encryption unit is specifically used for, and is added by the corresponding plaintext section of basic value described in the key pair extracted
It is close.
In conjunction with the first possible embodiment of second aspect, the embodiment of the present invention additionally provides the third of second aspect
The possible embodiment of kind, wherein it is described to be encrypted as asymmetric encryption,
The plaintext division unit is specifically used for, and plaintext to be encrypted is divided into different plaintext sections, each described
Plaintext section corresponds to a basic value；
The cipher key match unit is specifically used for, and brings the corresponding basic value in each plaintext section into described set in advance successively
In fixed periodic function formula, an output valve is obtained, the output valve corresponding one is extracted from preset group key centering
A key pair, the key pair extracted correspond to the corresponding plaintext section of the basic value；
The encryption unit is specifically used for, by the public key for the cipher key pair extracted to the corresponding plaintext of the basic value
Section is encrypted.
Encryption method provided in an embodiment of the present invention and device, using multiple sections will be divided into plain text, and to different
The mode that plaintext section is encrypted respectively, and in the prior art encrypts plaintext with carrying out longitudinal superposing type, cause encryption and
Decrypting process speed is slowly compared, and encryption method provided in an embodiment of the present invention and device are improving the same of the complexity of decryption
When, it ensure that the speed of encryption and decryption.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 shows a kind of flow chart for encryption method that the embodiment of the present invention is provided；
Fig. 2 shows the flow charts for second of encryption method that the embodiment of the present invention is provided；
Fig. 3 shows the flow chart for the third encryption method that the embodiment of the present invention is provided；
Fig. 4 shows a kind of composition frame chart for encryption device that the embodiment of the present invention is provided.
Specific implementation mode
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Usually exist
The component of the embodiment of the present invention described and illustrated in attached drawing can be arranged and be designed with a variety of different configurations herein.Cause
This, the detailed description of the embodiment of the present invention to providing in the accompanying drawings is not intended to limit claimed invention below
Range, but it is merely representative of the selected embodiment of the present invention.Based on the embodiment of the present invention, those skilled in the art are not doing
The every other embodiment obtained under the premise of going out creative work, shall fall within the protection scope of the present invention.
In the prior art, it in order to increase the complexity of decryption, is generally encrypted using more complicated key, for example increase
The length of encrypting key also increases the time of encryption and decryption simultaneously although can effectively increase the complexity of decryption, adds solution
Close speed is slow, influences the experience sense of user.Based on this, inventor is by studying for a long period of time, it is proposed that the embodiment of the present invention carries
The encryption method and device of confession distinguish encrypted mode, to change by will be divided into multiple sections in plain text, and to different sections
The kind above problem.
Referring to Fig. 1, Fig. 1 shows that the flow chart of encryption method provided in an embodiment of the present invention, the embodiment of the present invention carry
The encryption method of confession includes：
S101：Plaintext to be encrypted is divided into multiple plaintext sections.The division in plaintext section is not limited, it is each bright
The length in literary section can be identical or different, and the plaintext section of division is more, and the complexity of encryption and decryption is higher, and safety is higher,
Specifically can according to demand depending on.
S102：Key or key pair are matched for the multiple plaintext section.
A key or key pair correspond to a plaintext section herein.
S103：The plaintext in different sections is encrypted with matched key or the public key of cipher key pair.
It will be divided into different sections in plain text, the plaintext in different sections is added using key or the public key of cipher key pair
It is close, it is different from and increase encryption complexity is reached with this by increasing key length or complexity in the prior art.Through the invention
The encryption method that embodiment provides is encrypted, other people need to break different plaintext sections respectively in decryption
Solution, increases the complexity of decryption, and when the plaintext section of division is smaller, encrypted key can match more, to protect
The repeatability for demonstrate,proving key is not high.Encryption method mode provided in an embodiment of the present invention is simple, does not increase the length or multiple of key
The number of miscellaneous degree, key has no effect on the efficiency of encryption and decryption, during encryption and decryption, will not waste the excessive time, ensures
The speed of encryption and decryption.
After the encryption method provided through the embodiment of the present invention to being encrypted in plain text, the process of decryption and encrypted process
It is corresponding：
Ciphertext to be decrypted is divided into multiple ciphertext sections, multiple ciphertext sections herein should be understood as with it is encrypted
Section after being divided in plain text in journey is identical；Match key or key pair for the multiple ciphertext section, herein matched key or
The matched key in plaintext section or key pair in key pair, that is, ciphering process, a same key or key pair correspondence one are close
Literary section；The ciphertext in different sections is decrypted with matched key or the private key of cipher key pair.
Referring to Fig. 2, the flow chart of second of the encryption method provided Fig. 2 shows the embodiment of the present invention, the present invention
The encryption method that embodiment provides is symmetric cryptography, including：
S201：Plaintext to be encrypted is divided into multiple plaintext sections, each plaintext section corresponds to a basic value.
S202：One basic value is brought into preset periodic function formula and obtains a corresponding output valve.
S203：The corresponding key of the output valve is extracted from a preset group key.
Due to being an entirety in plain text, after being divided into different plaintext sections in plain text, need for different plaintext sections
Key is selected, in a preset group key, each section can be divided to distribute a key at random.In order to increase selection key
The complexity of process with this selection course of season there is certain regularity, encryption method provided in an embodiment of the present invention to use
The operation of periodic function formula chooses key automatically as the mode for choosing key according to the algorithm of periodic function formula, complicated
Degree is high, and high safety, periodic function formula herein can be trigonometric function, can also be fourier function etc., and the present invention is real
Example is applied not limit this.Preferably, the output valve of periodic function herein can extract preset all keys, to ensure
In the case where plaintext section is more, all keys can be utilized.
S204：It is encrypted by the corresponding plaintext section of basic value described in the key pair extracted.
S205：Basic value is replaced, the basic value after replacement is brought into the periodic function, corresponding output valve is obtained.
S206：The corresponding plaintext section encryption of basic value after being replaced by the corresponding key pair of obtained output valve.
Basic value herein can be time variable, or plaintext siding-to-siding block length variable, the replacement of basic value can be with
It is replaced according to preset sequence (such as the position of plaintext section in plaintext to be encrypted is incremented by or the sequence successively decreased),
It can also replace at random, it is not limited in the embodiment of the present invention, using basic value as the input variable of periodic function formula, obtains
Voucher of the output variable arrived as extraction key, a basic value then correspond to a key, and a key pair answers a plaintext
Section.
S207：Judge whether all plaintext sections are encrypted, it is on the contrary then repeat to hold if so, then follow the steps S208
Row step S205~S207, until all plaintext sections are encrypted.
S208：Terminate this encryption method.
For the ease of understanding that this encryption method, spy are given one example for reference：It will be divided into X in plain textnA section, respectively
X1、X2…Xn, each plaintext section corresponds to a basic value, respectively Y1、Y2…Yn, preset periodic function is triangle
Function, by Y1It brings into the trigonometric function, obtains an output valve Z1, Z1A key in a corresponding preset group key
Z1', pass through Z1By Z1' extract, Z1' to X1Encryption replaces basic value to Y2, by Y2It brings into the trigonometric function, obtains
Output valve Z2, Z2Key Z in a corresponding preset group key2', pass through Z2By Z2' extract, Z2' to X2Encryption, judges institute
Some plaintext sections whether be encrypted, if it is, execute encryption terminate, on the contrary it is then repeat replacement basic value, exported
Value, and plaintext section is encrypted, until all plaintext sections are encrypted.
After the encryption method provided by the embodiments of the present invention is encrypted, decrypting process includes：It will be to be decrypted close
Text is divided into multiple ciphertext sections, and each ciphertext section corresponds to a basic value, and multiple ciphertext sections herein should manage
Solution is identical as the section after being divided in plain text in ciphering process；One basic value is brought into preset periodic function formula
And output valve is obtained, basic value herein is first basic value brought into periodic function formula in ciphering process, herein
Periodic function formula is the periodic function formula used in ciphering process；The output valve is extracted from a preset group key
A corresponding key；It is decrypted by the corresponding ciphertext section of basic value described in the key pair extracted；Change basic value,
Basic value after change is brought into the periodic function, corresponding output valve is obtained；It is corresponding close by obtained output valve
Key decrypts the corresponding ciphertext section of basic value after change；Judge whether all ciphertext sections are decrypted, if it is, solution
Close end, on the contrary it repeats to replace basic value, output valve is obtained, and decrypt to plaintext section, until all plaintext sections are solved
Until close.
Referring to Fig. 3, Fig. 3 shows the flow chart for the third encryption method that the embodiment of the present invention is provided, the present invention
The encryption method that embodiment provides is asymmetric encryption, including：
S301：Plaintext to be encrypted is divided into multiple plaintext sections, each plaintext section corresponds to a basic value.
S302：One basic value is brought into preset periodic function formula and obtains a corresponding output valve.
S303：The corresponding key pair of the output valve is extracted from preset group key centering.
S304：The corresponding plaintext section of the basic value is encrypted by the public key for the cipher key pair extracted.
S305：Basic value is replaced, the basic value after replacement is brought into the periodic function, corresponding output valve is obtained.
S306：By the public key of the corresponding cipher key pair of obtained output valve to the corresponding plaintext area of basic value after replacement
Between encrypt.
S307：Judge whether all plaintext sections are encrypted, it is on the contrary then repeat to hold if so, then follow the steps S308
Row step S305~S307, until all plaintext sections are encrypted.
S308：Terminate this encryption method.
After the encryption method provided by the embodiments of the present invention is encrypted, decrypting process includes：It will be to be decrypted close
Text is divided into multiple ciphertext sections, and each ciphertext section corresponds to a basic value, and multiple ciphertext sections herein should manage
Solution is identical as the section after being divided in plain text in ciphering process；One basic value is brought into preset periodic function formula
And output valve is obtained, basic value herein is first basic value brought into periodic function formula in ciphering process, herein
Periodic function formula is the periodic function formula used in ciphering process；The output is extracted from preset group key centering
It is worth a corresponding key pair；The corresponding ciphertext section of the basic value is solved by the private key for the cipher key pair extracted
It is close；Change basic value, the basic value after change is brought into the periodic function, corresponding output valve is obtained；Pass through what is obtained
The private key of the corresponding cipher key pair of output valve decrypts the corresponding ciphertext section of basic value after change；Judge all ciphertext sections
It is whether decrypted, if it is, decryption terminates, otherwise repeat to replace basic value, obtains output valve, and to plaintext interval solutions
It is close, until all plaintext sections are decrypted.
Referring to Fig. 4, the embodiment of the present invention additionally provides a kind of encryption device, including：
Plaintext division unit 401, for plaintext to be encrypted to be divided into multiple plaintext sections；
Cipher key match unit 402：For matching key or key pair, a key or key for the multiple plaintext section
To a corresponding plaintext section；
Encryption unit 403：For the plaintext in different sections to be encrypted with the public key of matched key or cipher key pair.
As an implementation, encryption device provided in an embodiment of the present invention uses symmetric cryptography,
The plaintext division unit 401 is specifically used for, and plaintext to be encrypted is divided into different plaintext sections, Mei Gesuo
It states literary section clearly and corresponds to a basic value；
The cipher key match unit 402 is specifically used for, and successively brings the corresponding basic value in each plaintext section into described pre-
In the periodic function formula first set, an output valve is obtained, it is corresponding to extract the output valve from a preset group key
One key, the key extracted correspond to the corresponding plaintext section of the basic value；
The encryption unit 403 is specifically used for, by the corresponding plaintext section of basic value described in the key pair extracted into
Row encryption.
As second of embodiment, encryption device provided in an embodiment of the present invention uses asymmetric encryption,
The plaintext division unit 401 is specifically used for, and plaintext to be encrypted is divided into different plaintext sections, Mei Gesuo
It states literary section clearly and corresponds to a basic value；
The cipher key match unit 402 is specifically used for, and successively brings the corresponding basic value in each plaintext section into described pre-
In the periodic function formula first set, an output valve is obtained, extracting the output valve from preset group key centering corresponds to
A key pair, the key pair extracted correspond to the corresponding plaintext section of the basic value；
The encryption unit 403 is specifically used for, corresponding to the basic value by the public key for the cipher key pair extracted
Plaintext section is encrypted.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. a kind of encryption method, which is characterized in that it is described to be encrypted as symmetric cryptography, include the following steps：
Plaintext to be encrypted is divided into different plaintext sections, each plaintext section corresponds to a basic value, the base
Plinth value is time variable or plaintext siding-to-siding block length variable；
One basic value is brought into preset periodic function formula, an output valve is obtained, from a preset group key
Middle to extract the corresponding key of the output valve, the key extracted corresponds to the corresponding plaintext section of the basic value；
It is encrypted by the corresponding plaintext section of basic value described in the key pair extracted；
Basic value is replaced, and the basic value after replacement is brought into the periodic function formula, corresponding output valve is obtained, from pre-
If a group key in extract the corresponding key of the corresponding output valve；
The corresponding plaintext section encryption of basic value after being replaced by the key pair extracted；
The replacement basic value is repeated, and the basic value after replacement is brought into the periodic function formula, is obtained corresponding defeated
Go out value, the corresponding key of the corresponding output valve is extracted from a preset group key, passes through the key pair extracted
The step of corresponding plaintext section of basic value after replacement is encrypted, until all plaintext sections are encrypted.
2. encryption method according to claim 1, which is characterized in that the periodic function formula is in trigonometric function or Fu
Leaf function.
3. a kind of encryption method, which is characterized in that it is described to be encrypted as asymmetric encryption, include the following steps：
Plaintext to be encrypted is divided into different plaintext sections, each plaintext section corresponds to a basic value, the base
Plinth value is time variable or plaintext siding-to-siding block length variable；
One basic value is brought into preset periodic function formula, an output valve is obtained, from a preset group key
The corresponding key pair of the output valve is extracted in centering, and it is corresponding bright that the key pair extracted corresponds to the basic value
Literary section；
The corresponding plaintext section of the basic value is encrypted by the public key of the cipher key pair extracted；
Basic value is replaced, and the basic value after replacement is brought into the periodic function formula, corresponding output valve is obtained, from pre-
If the corresponding key pair of the group key centering extraction corresponding output valve；
The corresponding plaintext section of basic value after replacement is encrypted by the public key of the cipher key pair extracted；
The replacement basic value is repeated, and the basic value after replacement is brought into the periodic function formula, is obtained corresponding defeated
Go out value, the corresponding key pair of the corresponding output valve is extracted from preset group key centering, it is close by what is extracted
The step of public key of key centering encrypts the basic value corresponding plaintext section after replacement, until all plaintext sections are added
Until close.
4. encryption method according to claim 3, which is characterized in that the periodic function formula is in trigonometric function or Fu
Leaf function.
5. a kind of encryption device, which is characterized in that it is described to be encrypted as symmetric cryptography, including：
Plaintext division unit, for plaintext to be encrypted to be divided into different plaintext sections, each plaintext section corresponds to
One basic value, the basic value are time variable or plaintext siding-to-siding block length variable；
Cipher key match unit, for bringing the corresponding basic value in each plaintext section into preset periodic function formula successively
In, an output valve is obtained, the corresponding key of the output valve is extracted from a preset group key, what is extracted is described
Key corresponds to the corresponding plaintext section of the basic value；
Encryption unit is encrypted for the corresponding plaintext section of basic value described in the key pair by extracting.
6. a kind of encryption device, which is characterized in that it is described to be encrypted as asymmetric encryption, including：
Plaintext division unit, for plaintext to be encrypted to be divided into different plaintext sections, each plaintext section corresponds to
One basic value, the basic value are time variable or plaintext siding-to-siding block length variable；
Cipher key match unit, for bringing the corresponding basic value in each plaintext section into preset periodic function formula successively
In, an output valve is obtained, the corresponding key pair of the output valve is extracted from preset group key centering, extracts
The key pair corresponds to the corresponding plaintext section of the basic value；
Encryption unit adds the corresponding plaintext section of the basic value for the public key by the cipher key pair extracted
It is close.
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| CN107994989A (en) * | 2017-12-11 | 2018-05-04 | 建荣集成电路科技(珠海)有限公司 | A kind of data encryption system, encryption method, encryption chip and storage device |
| CN112235111B (en) * | 2020-12-17 | 2021-03-09 | 腾讯科技（深圳）有限公司 | Key generation method, device, equipment and computer readable storage medium |
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| CN102064936B (en) * | 2010-11-29 | 2012-08-22 | 北京卓微天成科技咨询有限公司 | Data encryption and decryption methods and devices |
| JP5875441B2 (en) * | 2012-03-29 | 2016-03-02 | インターナショナル・ビジネス・マシーンズ・コーポレーションＩｎｔｅｒｎａｔｉｏｎａｌ Ｂｕｓｉｎｅｓｓ Ｍａｃｈｉｎｅｓ Ｃｏｒｐｏｒａｔｉｏｎ | Apparatus and method for encrypting data |
| CN104125059A (en) * | 2013-04-28 | 2014-10-29 | 陈麟华 | Compound time varying password and time varying type data encryption method |
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2015
- 2015-10-10 CN CN201510653733.XA patent/CN105208038B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0624013A1 (en) * | 1993-05-05 | 1994-11-09 | Zunquan Liu | Device and method for data encryption |
| CN103825699A (en) * | 2014-02-13 | 2014-05-28 | 南京邮电大学 | Storage file parallel chaotic encryption method in cloud computing environment |
| CN104301094A (en) * | 2014-09-11 | 2015-01-21 | 江苏集群信息产业股份有限公司 | Safe data storage method for distributed type database |
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