CN106789053A - Random ciphertext generation method and system, decryption method and system - Google Patents
Random ciphertext generation method and system, decryption method and system Download PDFInfo
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- CN106789053A CN106789053A CN201611144279.6A CN201611144279A CN106789053A CN 106789053 A CN106789053 A CN 106789053A CN 201611144279 A CN201611144279 A CN 201611144279A CN 106789053 A CN106789053 A CN 106789053A
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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
- H04L9/14—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using a plurality of keys or algorithms
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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
- H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
- H04L9/065—Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems, RC4, SEAL or A5/3
- H04L9/0656—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher
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Abstract
The present invention relates to encryption and decryption technology, it discloses a kind of random ciphertext generation method and system, decryption method and system, the ciphertext in solution legacy packets AES to the encryption of same plaintext is unique, weakens the problem of ciphertext security.Random ciphertext generation system, including：AES selecting module, key selecting module, plaintext detection module, plaintext filling algorithm module and enciphering algorithm module；The AES selecting module is used to choose the type of block encryption algorithm；The key selecting module is used to choose the key length of the process that is encrypted；The plaintext detection module is used to judge input plaintext digit；The cleartext information that the plaintext filling algorithm module is used to be unsatisfactory for rule is filled according to special algorithm；The enciphering algorithm module is used to be encrypted the cleartext information after filling to operate and exporting cipher-text information.
Description
Technical field
The present invention relates to encryption and decryption technology, and in particular to a kind of random ciphertext generation method and system, decryption method and be
System.
Background technology
With the development of information encryption, the intensity of AES is increasingly subject to everybody attention and concern, related
Enhancing AES intensity method it is also more and more essential, plaintext by AES generation ciphertext after, 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 to the ciphertext that same plaintext is encrypted it is only due to block encryption algorithm
One, result in hacker can carry out inverse operation to known ciphertext, so as to draw 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.
The content of the invention
The technical problems to be solved by the invention are：Propose a kind of random ciphertext generation method and system, decryption method and
System, the ciphertext in solution legacy packets AES to the encryption of same plaintext is unique, weakens the problem of ciphertext security.
The technical solution adopted for the present invention to solve the technical problems is：
In a first aspect, the invention provides a kind of random ciphertext generation system, including：AES selecting module, key
Selecting module, plaintext detection module, plaintext filling algorithm module and enciphering algorithm module；
The AES selecting module is used to choose the type of block encryption algorithm；
The key selecting module is used to choose the key length of the process that is encrypted；
The plaintext detection module is used to judge input plaintext digit；
The cleartext information that the plaintext filling algorithm module is used to be unsatisfactory for rule is filled according to special algorithm；
The enciphering algorithm module is used to be encrypted the cleartext information after filling to operate and exporting cipher-text information.
Used as further optimization, the digit that the plaintext filling algorithm module can be filled is one times or key selected by many times
Length position.
Second aspect, the invention provides a kind of random ciphertext generation method, it is comprised the following 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 are judged the cleartext information being input into, and obtain the length information of its plaintext, and should
Cleartext information calculates a summary info by digest algorithm, then gives plaintext filling algorithm mould by length of the plaintext information transmission
Block, enciphering algorithm module is passed to by plaintext summary info；
D, plaintext filling algorithm module are filled according to the length information of be input into plaintext according to special algorithm；
The plaintext that E, enciphering algorithm module are exported using AES and symmetry algorithm key to plaintext filling algorithm module
Plaintext summary info before information and filling is encrypted, and exports a cipher-text information.
Used as further optimization, in step D, if length of the plaintext deficiency key length, plaintext filling algorithm module is then given birth to
Into random order information, and one times of key length will be filled into plain text using the information, one times of key length will then be generated again
Random order information, behind the cleartext information before being filled into；If length of the plaintext is equal to key length, plaintext filling algorithm module
One times of random order information of key length is then generated, is filled into behind cleartext information；If length of the plaintext is more than key length, bright
Literary filling algorithm module is then first averagely cut cleartext information by key integral multiple, random order information is generated, to less than one
The cleartext information of times key length is filled.
The third aspect, the embodiment of the present invention additionally provides a kind of decryption system, including：Decipherment algorithm module, reversely plaintext
Filling module and plaintext correction verification module；
The decipherment algorithm module is used to be decrypted cipher-text information to operate and exporting the cleartext information with filler；
The reverse plaintext filling module is used to remove the filler information in cleartext information and export final plaintext
Information；
The plaintext correction verification module is used to calculate and contrast the uniformity of the plaintext before input and the plaintext after decryption.
Fourth aspect, the embodiment of the present invention additionally provides a kind of decryption method, and it is comprised the following steps：
A, decipherment algorithm module are believed the ciphertext after cipher-text information is received using decipherment algorithm and symmetry algorithm key
Breath is decrypted operation, obtains the cleartext information containing plaintext filler and plaintext summary info, and will contain plaintext filler
Cleartext information pass to reverse plaintext filling algorithm module, plaintext summary info is passed into plaintext correction verification module；
B, reverse plaintext filling algorithm module carry out contrary operation to the cleartext information containing plaintext filler for obtaining, and obtain
Go out one and remove the cleartext information of plaintext filler, and export and give plaintext correction verification module；
C, plaintext correction verification module calculate summary info to the cleartext information for receiving, and by the summary info and before from solution
The plaintext summary info that close algoritic module is received is contrasted, and decryption oprerations success is judged if consistent, otherwise then decryption is lost
Lose.
The beneficial effects of the invention are as follows：Random filler can be automatically added in plaintext, same plaintext is being added every time
The algorithm of different ciphertexts can be generated after close, so that increase the strong degree of password, even if after realizing that hacker obtains ciphertext, it is also difficult reverse
Release in plain text, so as to increased data transmission security.
Brief description of the drawings
Fig. 1 is the random ciphertext generation system block diagram in the embodiment of the present invention；
Fig. 2 is the decryption system block diagram in the embodiment of the present invention.
Specific embodiment
The present invention is directed to propose a kind of random ciphertext generation method and system, decryption method and system, solve legacy packets
Ciphertext in AES to the encryption of same plaintext is unique, weakens the problem of ciphertext security.The present invention can be in plaintext
Automatically random filler is added, same plaintext is generated the algorithm of different ciphertexts after encryption every time, so as to increase close
The strong degree of code, even if after realizing that hacker obtains ciphertext, it is also difficult inversely to release in plain text.
As shown in figure 1, the random ciphertext generation system in the present embodiment, including：AES selecting module, key selection
Module, plaintext detection module, plaintext filling algorithm module and enciphering algorithm module；
The AES selecting module is used to choose the type of block encryption algorithm；
The key selecting module is used to choose the key length of the process that is encrypted；
The plaintext detection module is used to judge input plaintext digit；
The cleartext information that the plaintext filling algorithm module is used to be unsatisfactory for rule is filled according to special algorithm；
The enciphering algorithm module is used to be encrypted the cleartext information after filling to operate and exporting cipher-text information.
The digit that the plaintext filling algorithm module can be filled is the length position of a times or key selected by many times.
Based on the random ciphertext generation method that the random ciphertext generation system is realized, including implemented below step：
A, procedure Selection which kind of block encryption algorithm (such as DES)；
B, program pass through the AES (DES) for choosing, and choose the encryption key lengths (128bi t) for using.
C, plaintext detection module judged the input cleartext information for getting, and the length of its information is judged using algorithm
Degree, then calls HASH algorithms (such as MD5 algorithms) that the cleartext information is calculated into a summary info, afterwards by length of the plaintext number
According to passing to plaintext filling algorithm module, and plaintext summary info is passed into enciphering algorithm module.
D, plaintext filling algorithm module judge whether how the cleartext information is entered according to the length information of be input into plaintext
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, one times of random order information of key length is then generated again, before being filled into
Cleartext information behind；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 behind 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, random order information is generated, to the cleartext information less than one times of key length
It is filled.
The plaintext that E, enciphering algorithm module are exported using AES and symmetry algorithm key to plaintext filling algorithm module
Plaintext summary info before information and filling is encrypted, and exports a cipher-text information.
As shown in Fig. 2 the decryption system in the present embodiment, including：Decipherment algorithm module, reversely in plain text filling module and
Plaintext correction verification module；
The decipherment algorithm module is used to be decrypted cipher-text information to operate and exporting the cleartext information with filler；
The reverse plaintext filling module is used to remove the filler information in cleartext information and export final plaintext
Information；
The plaintext correction verification module is used to calculate and contrast the uniformity of the plaintext before input and the plaintext after decryption.
Based on the decryption method that above-mentioned decryption system is realized, including implemented below step：
A, decipherment algorithm module are believed the ciphertext after cipher-text information is received using decipherment algorithm and symmetry algorithm key
Breath is decrypted operation, obtains the cleartext information containing plaintext filler and plaintext summary info, and will contain plaintext filler
Cleartext information pass to reverse plaintext filling algorithm module, plaintext summary info is passed into plaintext correction verification module；
B, reverse plaintext filling algorithm module carry out contrary operation to the cleartext information containing plaintext filler for obtaining, and obtain
Go out one and remove the cleartext information of plaintext filler, and export and give plaintext correction verification module；
C, plaintext correction verification module calculate summary info to the cleartext information for receiving, and by the summary info and before from solution
The plaintext summary info that close algoritic module is received is contrasted, and decryption oprerations success is judged if consistent, otherwise then decryption is lost
Lose.
Random filler is added to cleartext information using the present invention, after encryption every time, different ciphertext letters can be generated
Breath, substantially increases the cost that hackers obtain sensitive data, increased the strong degree of ciphertext, improves the safety of related system
Property.
Above-described embodiment is only the present invention preferably implementation method, it should be appreciated that those skilled in the art can be designed that
A lot of other modifications and implementation method, all any modifications made within the spirit and principles in the present invention, equivalent and
Improve etc., should be included within the scope of the present invention.
Claims (6)
1. random ciphertext generates system, it is characterised in that including：AES selecting module, in plain text key selecting module, detection
Module, plaintext filling algorithm module and enciphering algorithm module；
The AES selecting module is used to choose the type of block encryption algorithm；
The key selecting module is used to choose the key length of the process that is encrypted；
The plaintext detection module is used to judge input plaintext digit；
The cleartext information that the plaintext filling algorithm module is used to be unsatisfactory for rule is filled according to special algorithm；
The enciphering algorithm module is used to be encrypted the cleartext information after filling to operate and exporting cipher-text information.
2. random ciphertext as claimed in claim 1 generates system, it is characterised in that the plaintext filling algorithm module can be filled
Digit be one times or key selected by many times length position.
3. random ciphertext generation method, it is characterised in that comprise the following 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 are judged the cleartext information being input into, and obtain the length information of its plaintext, and by this in plain text
Information calculates a summary info by digest algorithm, then gives plaintext filling algorithm module by length of the plaintext information transmission,
Plaintext summary info is passed into enciphering algorithm module；
D, plaintext filling algorithm module are filled according to the length information of be input into plaintext according to special algorithm；
The cleartext information that E, enciphering algorithm module are exported using AES and symmetry algorithm key to plaintext filling algorithm module
It is encrypted with the plaintext summary info before filling, exports a cipher-text information.
4. ciphertext generation method as claimed in claim 3 random, it is characterised in that in step D, if length of the plaintext deficiency is close
Key length, plaintext filling algorithm module then generates random order information, and plaintext is filled into one times of key length using the information,
Then one times of random order information of key length is generated again, behind the cleartext information before being filled into；If length of the plaintext etc.
In key length, plaintext filling algorithm module then generates one times of random order information of key length, is filled into behind cleartext information；
If length of the plaintext is more than key length, plaintext filling algorithm module is then first averagely cut cleartext information by key integral multiple
Cut, generate random order information, the cleartext information less than one times of key length is filled.
5. decryption system, it is characterised in that including：Decipherment algorithm module, reversely plaintext filling module and plaintext correction verification module；
The decipherment algorithm module is used to be decrypted cipher-text information to operate and exporting the cleartext information with filler；
The reverse plaintext filling module is used to remove the filler information in cleartext information and export final cleartext information；
The plaintext correction verification module is used to calculate and contrast the uniformity of the plaintext before input and the plaintext after decryption.
6. decryption method, it is characterised in that comprise the following steps：
A, decipherment algorithm module are entered using decipherment algorithm and symmetry algorithm key after cipher-text information is received to the cipher-text information
Row decryption oprerations, obtain the cleartext information containing plaintext filler and plaintext summary info, and will contain the bright of plaintext filler
Literary information transmission gives reverse plaintext filling algorithm module, and plaintext summary info is passed into plaintext correction verification module；
B, reverse plaintext filling algorithm module carry out contrary operation to the cleartext information containing plaintext filler for obtaining, and draw one
It is individual to remove the cleartext information of plaintext filler, and export and give plaintext correction verification module；
C, plaintext correction verification module calculate summary info to the cleartext information for receiving, and are calculated by the summary info and before from decryption
The plaintext summary info that method module is received is contrasted, and decryption oprerations success is judged if consistent, otherwise then decryption fails.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201611144279.6A CN106789053A (en) | 2016-12-13 | 2016-12-13 | Random ciphertext generation method and system, decryption method and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611144279.6A CN106789053A (en) | 2016-12-13 | 2016-12-13 | Random ciphertext generation method and system, decryption method and system |
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| CN106789053A true CN106789053A (en) | 2017-05-31 |
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| CN201611144279.6A Pending CN106789053A (en) | 2016-12-13 | 2016-12-13 | Random ciphertext generation method and system, decryption method and system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US20210266175A1 (en) * | 2018-06-18 | 2021-08-26 | Koninklijke Philips N.V. | Device for data encryption and integrity |
| CN113794550A (en) * | 2021-08-09 | 2021-12-14 | 山东浪潮工业互联网产业股份有限公司 | Link random encryption method and system |
| CN115001758A (en) * | 2022-05-18 | 2022-09-02 | 矩阵时光数字科技有限公司 | Short byte message security encryption method based on quantum encryption |
Citations (3)
| 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 |
| CN103684794A (en) * | 2013-12-25 | 2014-03-26 | 华南理工大学 | Communication data encryption and decryption method based on DES (Data Encryption Standard), RSA and SHA-1 (Secure Hash Algorithm) encryption algorithms |
| CN104580129A (en) * | 2013-10-29 | 2015-04-29 | 杭州迪普科技有限公司 | SSL asynchronization agent method based on stream processing |
-
2016
- 2016-12-13 CN CN201611144279.6A patent/CN106789053A/en active Pending
Patent Citations (3)
| 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 |
| CN104580129A (en) * | 2013-10-29 | 2015-04-29 | 杭州迪普科技有限公司 | SSL asynchronization agent method based on stream processing |
| CN103684794A (en) * | 2013-12-25 | 2014-03-26 | 华南理工大学 | Communication data encryption and decryption method based on DES (Data Encryption Standard), RSA and SHA-1 (Secure Hash Algorithm) encryption algorithms |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US20210266175A1 (en) * | 2018-06-18 | 2021-08-26 | Koninklijke Philips N.V. | Device for data encryption and integrity |
| CN113794550A (en) * | 2021-08-09 | 2021-12-14 | 山东浪潮工业互联网产业股份有限公司 | Link random encryption method and system |
| CN115001758A (en) * | 2022-05-18 | 2022-09-02 | 矩阵时光数字科技有限公司 | Short byte message security encryption method based on quantum encryption |
| CN115001758B (en) * | 2022-05-18 | 2024-05-07 | 矩阵时光数字科技有限公司 | Quantum encryption-based short byte message security encryption method |
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