CN106385313A - Random cryptograph system based on grouping encryption algorithm and realization method thereof - Google Patents
Random cryptograph system based on grouping encryption algorithm and realization method thereof Download PDFInfo
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- CN106385313A CN106385313A CN201610810598.XA CN201610810598A CN106385313A CN 106385313 A CN106385313 A CN 106385313A CN 201610810598 A CN201610810598 A CN 201610810598A CN 106385313 A CN106385313 A CN 106385313A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
- H04L9/0869—Generation of secret information including derivation or calculation of cryptographic keys or passwords involving random numbers or seeds
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Abstract
The present invention relates to the computer software encryption technology field, and discloses a random cryptograph system based on the grouping encryption algorithm and the realization method thereof. The method can automatically determine the encrypted plaintext digit number length and the grouping length of the grouping encryption algorithm and perform intelligent filling of the plaintext. The system comprises an encryption subsystem and a decryption subsystem, wherein the encryption subsystem includes an encryption algorithm selection module, a secret key selection module, a plaintext determination module, a plaintext filling algorithm module and an encryption algorithm module. The decryption subsystem includes a decryption algorithm module, a reversed plaintext filling module and a plaintext verification module. The realization method provided by the invention adds random filling bit to the plaintext information. The random cryptograph system based on the grouping encryption algorithm and the realization method thereof are suitable for the encryption of the daily computer software.
Description
Technical field
The present invention relates to computer software encryption technology, particularly to the random ciphertext system based on block encryption algorithm and
Implementation method.
Background technology
With the development of information encryption, the intensity of AES increasingly receives everybody attention and concern, related
Enhancing AES intensity method also more and more essential, in plain text after AES generates ciphertext, to ciphertext
Analysis and cracking also become the thing of the frequent concern of hackers, block encryption algorithm frequently commonly uses letter as a use
Encryption for information method, is especially suitable for encrypting mass data；But because block encryption algorithm is only to the ciphertext of same plain text encryption
One, result in hacker can carry out inverse operation to known ciphertext, thus drawing corresponding plaintext, largely reducing the peace of ciphertext
Quan Xing；Current legacy packets AES, does not solve the problems, such as this ciphertext uniqueness at all；It is thus desirable to one can be
Automatically add random filler in plain text, make same plaintext can generate the algorithm of different ciphertexts after each encryption, thus
Increase the strong degree of password, even if after realizing hacker's acquisition ciphertext, the also difficult reverse purpose releasing plaintext.
Content of the invention
The technical problem to be solved in the present invention is：A kind of random ciphertext system based on block encryption algorithm and realization are provided
Method, the block length of automatic decision encrypted plaintext digits long and its block encryption algorithm used, and it is carried out in plain text
The random ciphertext generation method of intelligence filling.
For solving the above problems, the technical solution used in the present invention is：Based on the random ciphertext system of block encryption algorithm,
Including encryption subsystem, described encryption subsystem include AES selecting module, key selecting module, plaintext judge module,
Plaintext filling algorithm module and enciphering algorithm module；
Described AES selecting module is used for choosing the type of block encryption algorithm；
Described key selecting module is used for choosing the key length of the process that is encrypted；
Described plaintext detection module is used for judging input plaintext digit, and this cleartext information is calculated by digest algorithm
One summary info, then by length of the plaintext information transmission to plaintext filling algorithm module, plaintext summary info is passed to and adds
Close algoritic module；
Described plaintext filling algorithm module is used for entering the cleartext information being unsatisfactory for rule according to specific plaintext filling algorithm
Row filling, specifically includes：If length of the plaintext deficiency key length, plaintext filling algorithm module then generates random order information, and
Using this information, plaintext is filled into one times of key length, then generates the random order information of one times of key length, filling again
To after cleartext information before；If length of the plaintext is equal to key length, plaintext filling algorithm module then generates one times of key
The random order information of length, is filled into after cleartext information；If length of the plaintext is more than key length, plaintext filling algorithm module
Then first cleartext information is averagely cut by key integral multiple, generated random order information, to bright less than one times of key length
Civilian information is filled with；
Described enciphering algorithm module is used for the plaintext summary info before the cleartext information after filling and filling is carried out adding
Close operate and export cipher-text information.
Further, described digest algorithm is hash algorithm.
Further, described hash algorithm is MD5 algorithm.
Further, present system also includes decrypting subsystem, and described decrypting subsystem includes decipherment algorithm module, anti-
To plaintext filling algorithm module and plaintext correction verification module；
Described decipherment algorithm module is used for cipher-text information is decrypted the cleartext information operating and exporting with filler
With plaintext summary info；
Described reverse ciphertext filling algorithm module is used for removing the filler information in cleartext information and exporting final
Cleartext information；
Described plaintext correction verification module is used for calculating and contrast described plaintext summary info and described final cleartext information
Concordance is it was demonstrated that the effectiveness of decryption oprerations.
Based on the random ciphertext implementation method of block encryption algorithm, comprise the steps：
A, enciphering algorithm module select used block encryption algorithm；
B, key selecting module determine key length according to selected block encryption algorithm；
C, plaintext detection module judge to the cleartext information of input, and obtain the length information of its plaintext, and should
Cleartext information calculates a summary info by digest algorithm, then by length of the plaintext information transmission to plaintext filling algorithm mould
Block, plaintext summary info is passed to enciphering algorithm module；
D, plaintext filling algorithm module, according to the length information of inputted plaintext, judge whether how this cleartext information is entered
Row padding, if length of the plaintext deficiency key length, plaintext filling algorithm module then generates random order information, and use should
Plaintext is filled into one times of key length by information, then generates the random order information of one times of key length again, before being filled into
Cleartext information after；If length of the plaintext is equal to key length, plaintext filling algorithm module then generates one times of key length
Random order information, is filled into after cleartext information；If length of the plaintext is more than key length, plaintext filling algorithm module then first will
Cleartext information is averagely cut by key integral multiple, generates random order information, to the cleartext information less than one times of key length
It is filled with；
E, enciphering algorithm module use the plaintext that AES and symmetry algorithm key export to plaintext filling algorithm module
Plaintext summary info before information and filling is encrypted, and exports a cipher-text information.
Further, described digest algorithm is hash algorithm.
Further, described hash algorithm is MD5 algorithm.
Further, the inventive method also includes step：
F, decipherment algorithm module, after receiving cipher-text information, are believed to this ciphertext using decipherment algorithm and symmetry algorithm key
Breath is decrypted operation, obtains the cleartext information containing plaintext filler and plaintext summary info, and will be containing plaintext filler
Cleartext information pass to reverse plaintext filling algorithm module, plaintext summary info is passed to plaintext correction verification module；
G, reverse plaintext filling algorithm module carry out contrary operation to obtaining the cleartext information containing plaintext filler, obtain
Go out a cleartext information removing plaintext filler, and export to plaintext correction verification module；
H, plaintext correction verification module calculate summary info to the cleartext information receiving, and by this summary info with before from solution
The plaintext summary info that close algoritic module receives is contrasted, if unanimously, judges decryption oprerations success；If inconsistent,
Then decipher unsuccessfully.
The invention has the beneficial effects as follows：Implementation method principle of the present invention is simple, input cost is low, using to cleartext information plus
Enter random filler, after each encryption, different cipher-text information can be generated, substantially increase hackers and obtain sensitive data
Cost, increased the strong degree of ciphertext, improve the safety of related system.
Brief description
Fig. 1 is the encryption flow figure of embodiment；
Fig. 2 is the deciphering flow chart of embodiment.
Specific embodiment
In order to be able to preferably understand to technical scheme, carry out in detail below by specific embodiment
Explanation：
The system of embodiment includes：Encryption subsystem and decrypting subsystem, wherein encryption system contain AES choosing
Select module, key selecting module, plaintext judge module, plaintext filling algorithm module and enciphering algorithm module；Decrypting process comprises
Deciphering algoritic module, direction plaintext filling algorithm module and plaintext correction verification module.
Wherein：Described AES selecting module is used for choosing the type of block encryption algorithm；Described key selecting module
For choosing the key length of the process that is encrypted；Described plaintext detection module is used for judging input plaintext digit；Described plaintext
Filling algorithm module is used for being filled with the cleartext information being unsatisfactory for rule according to special algorithm；Described enciphering algorithm module is used
Operate and export cipher-text information in being encrypted to the cleartext information after filling；Described decipherment algorithm module is used for cipher-text information
It is decrypted the cleartext information operating and exporting with filler；Described reverse ciphertext filling algorithm is used in cleartext information
Filler information removes and exports final cleartext information；Described plaintext correction verification module is used for the plaintext calculating and contrasting before input
With the concordance of the plaintext after deciphering it was demonstrated that the effectiveness of decryption oprerations.
Based on said system, as depicted in figs. 1 and 2, the concrete methods of realizing of embodiment comprises the following steps：
A, enciphering algorithm module select used block encryption algorithm, and this example chooses DES algorithm；
B, key selecting module pass through the DES algorithm choosing, and choose the encryption key lengths of use, and this example is chosen
128bit；
C, plaintext detection module judge to the input cleartext information getting, and judge the length of its information using algorithm
Degree, then calls HASH algorithm (as MD5 algorithm) this cleartext information to be calculated a summary info, afterwards by length of the plaintext number
According to passing to plaintext filling algorithm module, and plaintext summary info is passed to enciphering algorithm module；
D, plaintext filling algorithm module, according to the length information of inputted plaintext, judge whether how this cleartext information is entered
Row padding, if length of the plaintext deficiency key length, plaintext filling algorithm module then generates random order information, and use should
Plaintext is filled into one times of key length by information, then generates the random order information of one times of key length again, before being filled into
Cleartext information after；If length of the plaintext is equal to key length, plaintext filling algorithm module then generates one times of key length
Random order information, is filled into after cleartext information；If length of the plaintext is more than key length, plaintext filling algorithm module then first will
Cleartext information is averagely cut by key integral multiple, generates random order information, to the cleartext information less than one times of key length
It is filled with；
E, enciphering algorithm module use the plaintext that AES and symmetry algorithm key export to plaintext filling algorithm module
Plaintext summary info before information and filling is encrypted, and exports a cipher-text information；
F, decipherment algorithm module, after receiving cipher-text information, are believed to this ciphertext using decipherment algorithm and symmetry algorithm key
Breath is decrypted operation, obtains the cleartext information containing plaintext filler and plaintext summary info, and will be containing plaintext filler
Cleartext information pass to reverse plaintext filling algorithm module, plaintext summary info is passed to plaintext correction verification module；
G, reverse plaintext filling algorithm module carry out contrary operation to obtaining the cleartext information containing plaintext filler, obtain
Go out a cleartext information removing plaintext filler, and export to plaintext correction verification module；
H, plaintext correction verification module calculate summary info to the cleartext information receiving, and by this summary info with before from solution
The plaintext summary info that close algoritic module receives is contrasted, if consistent, judge decryption oprerations success, otherwise then deciphering is lost
Lose.
Random filler is added to cleartext information using the present invention, after each encryption, different ciphertext letters can be generated
Breath, substantially increases the cost that hackers obtain sensitive data, increased the strong degree of ciphertext, improve the safety of related system
Property.
Although reference be made herein to invention has been described for the explanatory embodiment of the present invention, and above-described embodiment is only this
Bright preferably embodiment, embodiments of the present invention are simultaneously not restricted to the described embodiments it should be appreciated that people in the art
Member can be designed that a lot of other modifications and embodiment, all made within the spirit and principles in the present invention any repair
Change, equivalent and improvement etc., should be included within the scope of the present invention.
Claims (8)
1. the random ciphertext system based on block encryption algorithm, including encryption subsystem it is characterised in that described encryption subsystem
Including AES selecting module, key selecting module, plaintext judge module, plaintext filling algorithm module and AES mould
Block；
Described AES selecting module is used for choosing the type of block encryption algorithm；
Described key selecting module is used for choosing the key length of the process that is encrypted；
Described plaintext detection module is used for judging input plaintext digit, and this cleartext information is calculated one by digest algorithm
Summary info, then by length of the plaintext information transmission to plaintext filling algorithm module, plaintext summary info is passed to encryption and calculates
Method module；
Described plaintext filling algorithm module is used for being filled out the cleartext information being unsatisfactory for rule according to specific plaintext filling algorithm
Fill, specifically include：If length of the plaintext deficiency key length, plaintext filling algorithm module then generates random order information, and uses
Plaintext is filled into one times of key length by this information, then generates the random order information of one times of key length again, is filled into it
After front cleartext information；If length of the plaintext is equal to key length, plaintext filling algorithm module then generates one times of key length
Random order information, be filled into after cleartext information；If length of the plaintext is more than key length, plaintext filling algorithm module is then first
Cleartext information is averagely cut by key integral multiple, is generated random order information, to the plaintext letter less than one times of key length
Breath is filled with；
Described enciphering algorithm module is used for being encrypted behaviour to the plaintext summary info before the cleartext information after filling and filling
Make and export cipher-text information.
2. the random ciphertext system based on block encryption algorithm according to claim 1 is it is characterised in that described summary is calculated
Method is hash algorithm.
3. the random ciphertext system based on block encryption algorithm according to claim 2 is it is characterised in that described Hash is calculated
Method is MD5 algorithm.
4. the random ciphertext system based on block encryption algorithm according to claim 1 is it is characterised in that also include deciphering
Subsystem, described decrypting subsystem includes decipherment algorithm module, reverse plaintext filling algorithm module and plaintext correction verification module；
Described decipherment algorithm module is used for cipher-text information is decrypted and operates and export cleartext information with filler and bright
Civilian summary info；
Described reverse ciphertext filling algorithm module is used for removing the filler information in cleartext information and exporting final plaintext
Information；
Described plaintext correction verification module is used for calculating with to contrast described plaintext summary info consistent with described final cleartext information
Property is it was demonstrated that the effectiveness of decryption oprerations.
5. the random ciphertext implementation method based on block encryption algorithm is it is characterised in that comprise the steps：
A, enciphering algorithm module select used block encryption algorithm；
B, key selecting module determine key length according to selected block encryption algorithm；
C, plaintext detection module judge to the cleartext information of input, and obtain the length information of its plaintext, and by this in plain text
Information calculates a summary info by digest algorithm, then by length of the plaintext information transmission to plaintext filling algorithm module,
Plaintext summary info is passed to enciphering algorithm module；
D, plaintext filling algorithm module, according to the length information of inputted plaintext, judge whether how this cleartext information is filled out
Fill operation, if length of the plaintext deficiency key length, plaintext filling algorithm module then generates random order information, and uses this information
Plaintext is filled into one times of key length, then generates the random order information of one times of key length again, bright before being filled into
After civilian information；If length of the plaintext is equal to key length, plaintext filling algorithm module then generates the random of one times of key length
Position information, is filled into after cleartext information；If length of the plaintext is more than key length, plaintext filling algorithm module then first will in plain text
Information is averagely cut by key integral multiple, generates random order information, the cleartext information less than one times of key length is carried out
Filling；
E, enciphering algorithm module use the cleartext information that AES and symmetry algorithm key export to plaintext filling algorithm module
It is encrypted with the plaintext summary info before filling, export a cipher-text information.
6. the random ciphertext implementation method based on block encryption algorithm according to claim 5 is it is characterised in that described pluck
Algorithm is wanted to be hash algorithm.
7. the random ciphertext implementation method based on block encryption algorithm according to claim 6 is it is characterised in that described Kazakhstan
Uncommon algorithm is MD5 algorithm.
8. the random ciphertext implementation method based on block encryption algorithm according to claim 5 is it is characterised in that also include
Step：
F, decipherment algorithm module, after receiving cipher-text information, are entered to this cipher-text information using decipherment algorithm and symmetry algorithm key
Row decryption oprerations, obtain the cleartext information containing plaintext filler and plaintext summary info, and will be bright containing plaintext filler
Civilian information transmission gives reverse plaintext filling algorithm module, and plaintext summary info is passed to plaintext correction verification module；
G, reverse plaintext filling algorithm module carry out contrary operation to obtaining the cleartext information containing plaintext filler, draw one
The individual cleartext information removing plaintext filler, and export to plaintext correction verification module；
H, plaintext correction verification module calculate summary info to the cleartext information receiving, and by this summary info with before from deciphering calculation
The plaintext summary info that method module receives is contrasted, if unanimously, judges decryption oprerations success；If it is inconsistent, solution
Close failure.
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| CN201610810598.XA CN106385313A (en) | 2016-09-08 | 2016-09-08 | Random cryptograph system based on grouping encryption algorithm and realization method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107147487A (en) * | 2017-05-23 | 2017-09-08 | 高胜法 | The random block cipher of symmetric key |
| CN108134799A (en) * | 2018-01-18 | 2018-06-08 | 国网湖南省电力有限公司 | Novel encipher-decipher method and its device |
| CN108270771A (en) * | 2017-12-22 | 2018-07-10 | 中国电子科技集团公司第三十研究所 | A kind of shellcode encoding and decoding deformation method |
| CN109660328A (en) * | 2018-12-26 | 2019-04-19 | 中金金融认证中心有限公司 | Symmetric block encryption method, apparatus, equipment and medium |
| CN110912891A (en) * | 2019-11-24 | 2020-03-24 | 苏州浪潮智能科技有限公司 | Network transmission encryption method, device, equipment and medium |
| CN111884796A (en) * | 2020-06-17 | 2020-11-03 | 中国电子科技集团公司第三十研究所 | A method and system for carrying information based on random number field |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102546156A (en) * | 2012-02-01 | 2012-07-04 | 李智虎 | Method, system and device for grouping encryption |
| CN102710605A (en) * | 2012-05-08 | 2012-10-03 | 重庆大学 | Information security management and control method under cloud manufacturing environment |
| CN103684794A (en) * | 2013-12-25 | 2014-03-26 | 华南理工大学 | A Communication Data Encryption and Decryption Method Based on DES, RSA, and SHA-1 Encryption Algorithms |
| US9380034B2 (en) * | 2014-09-12 | 2016-06-28 | Sze Yuen Wong | Systems and methods for data gathering without internet |
-
2016
- 2016-09-08 CN CN201610810598.XA patent/CN106385313A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102546156A (en) * | 2012-02-01 | 2012-07-04 | 李智虎 | Method, system and device for grouping encryption |
| CN102710605A (en) * | 2012-05-08 | 2012-10-03 | 重庆大学 | Information security management and control method under cloud manufacturing environment |
| CN103684794A (en) * | 2013-12-25 | 2014-03-26 | 华南理工大学 | A Communication Data Encryption and Decryption Method Based on DES, RSA, and SHA-1 Encryption Algorithms |
| US9380034B2 (en) * | 2014-09-12 | 2016-06-28 | Sze Yuen Wong | Systems and methods for data gathering without internet |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107147487A (en) * | 2017-05-23 | 2017-09-08 | 高胜法 | The random block cipher of symmetric key |
| CN108270771A (en) * | 2017-12-22 | 2018-07-10 | 中国电子科技集团公司第三十研究所 | A kind of shellcode encoding and decoding deformation method |
| CN108134799A (en) * | 2018-01-18 | 2018-06-08 | 国网湖南省电力有限公司 | Novel encipher-decipher method and its device |
| CN109660328A (en) * | 2018-12-26 | 2019-04-19 | 中金金融认证中心有限公司 | Symmetric block encryption method, apparatus, equipment and medium |
| CN110912891A (en) * | 2019-11-24 | 2020-03-24 | 苏州浪潮智能科技有限公司 | Network transmission encryption method, device, equipment and medium |
| CN111884796A (en) * | 2020-06-17 | 2020-11-03 | 中国电子科技集团公司第三十研究所 | A method and system for carrying information based on random number field |
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Application publication date: 20170208 |