CN102333093A - Data encryption transmission method and system - Google Patents
Data encryption transmission method and system Download PDFInfo
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- CN102333093A CN102333093A CN201110301958A CN201110301958A CN102333093A CN 102333093 A CN102333093 A CN 102333093A CN 201110301958 A CN201110301958 A CN 201110301958A CN 201110301958 A CN201110301958 A CN 201110301958A CN 102333093 A CN102333093 A CN 102333093A
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Abstract
The invention is applicable to the field of network communication, and provides a data encryption transmission method and system. The data encryption transmission method comprises the following steps: A. a server dynamically generates a DES (data encryption standard) key based on a data encryption algorithm (DEA), and encrypts the DES key by an RSA (Rivest, Shamir and Adleman) public key which is dynamically generated by a client side so as to generate an RSA encrypted ciphertext; B. the client side decrypts the received RSA encrypted ciphertext so as to obtain the DES key; and C. a message transferred between the server and the client side is compressed according to a ZLIB algorithm, and then the DES key encrypts the compressed message. The data encryption transmission method has the beneficial effects that the RSA and DES encryption algorithms are combined together, namely the message is encrypted according to the DES algorithm and meanwhile the DES key is encrypted according to the RSA algorithm so as to integrate the advantage of fast encryption and decryption speed of the DES algorithm and the advantage of high safety of the RSA algorithm; and meanwhile the message is compressed according to the ZLIB algorithm so as to realize safe and efficient data encryption transmission.
Description
Technical field
The invention belongs to network communication field, relate in particular to a kind of data encryption and transmission method and system.
Background technology
High speed development along with computer communication technology; Increasing important information can be selected to transmit through network; Therefore; How to ensure that fail safe that communication data transmits has become one of network security problem that people pay close attention in network, and become the core research point of network security with the information security technology that is encrypted as means.
In the data encryption transmission technology, and RSA Algorithm and data encryption standard (data encryption standard, DES) algorithm has obtained extensive use; In above-mentioned AES; Though the RSA Algorithm form is simple and strong security, its encryption/decryption speed is slow, if be that whole message carries out encryption and decryption then efficient is extremely low through RSA Algorithm; Can't practical requirement, therefore be not suitable for the long message of encrypted content information; Though and the speed ratio of DES algorithm encryption and decryption is very fast, its encryption key distribution process more complicated, and the AES fail safe is lower than RSA Algorithm, is not suitable for the very important message of enciphered message.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of data encryption and transmission method, is intended to RSA Algorithm and DES algorithm combination to realize the encrypted transmission of data.
The embodiment of the invention is achieved in that a kind of data encryption and transmission method, and said method comprises the steps:
A. server dynamically generates DEA DES key, and to use the RSA PKI that dynamically generates from client be said DES secret key encryption, generates the rsa encryption ciphertext;
B. the client said rsa encryption decrypt ciphertext that will receive is obtained said DES key;
C. utilize said DES key that the message that transmits between the server and client side is carried out encryption.
Another purpose of the embodiment of the invention is to provide a kind of Data Encrypting Transmission System, comprises server and at least one client, and said server comprises:
The DES key production module is used for dynamically generating the DES key;
The rsa encryption module, being used to adopt the RSA PKI that dynamically generates from said client is said DES secret key encryption, generates the rsa encryption ciphertext;
The first message sending module is used to utilize said DES key to send to client for message after encrypting;
Said client comprises:
DES key acquisition module is used for the said rsa encryption decrypt ciphertext that receives is obtained said DES key;
The second message sending module is used to utilize said DES key to send to said server for message after encrypting.
In embodiments of the present invention; The method that has adopted RSA to combine with the des encryption algorithm; Use the DES algorithm to encrypt as message; Use RSA Algorithm to encrypt simultaneously, thereby combined fast advantage of DES algorithm encryption/decryption speed and the safe advantage of RSA Algorithm, realized the transmission of data encryption safely and efficiently as the DES key.
Description of drawings
Fig. 1 is the network structure of the Data Encrypting Transmission System that provides of the embodiment of the invention;
Fig. 2 is the realization flow figure of the data encryption and transmission method that provides of first embodiment of the invention;
Fig. 3 is server and client side's in the Data Encrypting Transmission System that provides of second embodiment of the invention a structure chart.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
In embodiments of the present invention; The method that has adopted RSA to combine with the des encryption algorithm; Use the DES algorithm to encrypt as message; Use RSA Algorithm to encrypt simultaneously, thereby combined fast advantage of DES algorithm encryption/decryption speed and the safe advantage of RSA Algorithm, realized the transmission of data encryption safely and efficiently as the DES key.
Fig. 1 shows the network configuration of the Data Encrypting Transmission System that the embodiment of the invention provides, and for the ease of explanation, only shows the part relevant with present embodiment.
With reference to Fig. 1, this Data Encrypting Transmission System is made up of server 11 and at least one client 12, and carries out network service based on Transmission Control Protocol between server 11 and the client 12, can realize mutual transfer of data.In the present embodiment, promptly need realize the encrypted transmission of data between server 11 and the client 12.
Need to prove; All embodiment provided by the invention also all are applicable to the network service of carrying out based on udp protocol; Because udp protocol does not have the notion of server and client; Therefore when carrying out network service based on udp protocol, login side and quilt login side realize the effect identical with server with the client of communicating by letter based on Transmission Control Protocol respectively as virtual client and server.In this manual, each embodiment is all being that example describes based on Transmission Control Protocol communication.
Fig. 2 shows the realization flow of the data encryption and transmission method that first embodiment of the invention provides, and details are as follows:
1. dynamically to generate RSA key right for client, and said key is to comprising RSA PKI and corresponding RSA private key thereof.
In the present embodiment, because the dynamic generation of client is the key of RSA Algorithm, therefore, the key of generation is two; One is the RSA PKI, i.e. public keys, and one is the RSA private key; Be private cipher key, in the encryption and decryption process of reality, the RSA PKI is disclosed by its owner; Encryption side utilizes the RSA PKI to encrypt individually, and the need to be keep secret of RSA private key is deposited, and is specifically designed to deciphering through the RSA ciphertext of encrypting.
2. client is sent to server with the RSA PKI that generates.
In the present embodiment, the RSA key of client generation sends to server after encapsulating with the form of logining message.
As one embodiment of the present of invention, the login message is generated by client, can also comprise user name, password and the timestamp of client.In the present embodiment; Username and password is used to indicate the legitimacy of client, and timestamp is used to indicate the time that server receives this login message, and wherein; Password and timestamp are all used md5-challenge, and (message-digest algorithm 5 MD5) encrypts.
Correspondingly; When the login message had comprised user name, password and the timestamp of client, service end need judge at first whether username and password wherein is correct after receiving the login message; Simultaneously; Whether the timestamp that also need detect wherein is denoted as the current time, if then execution in step 3.
3. server dynamically generates the DES key, and uses the DES secret key encryption of RSA PKI for dynamically generating from client that receives, thereby generates the rsa encryption ciphertext.
4. server is sent to client with the rsa encryption ciphertext that generates.
5. client utilizes the RSA private key that the rsa encryption ciphertext that receives is deciphered, thereby gets access to the DES key that server dynamically generates.
So far, client and service end have all got access to and have been used to encrypt the DES key that sends message.
Simultaneously; As one embodiment of the present of invention, thereby after client utilizes the deciphering of RSA private key to get access to the DES key that is used for the encryption and decryption message, can be to current RSA key to emptying; The RSA key new with convenient dynamic next time generation is right, has improved safety of data transmission.
6. server by utilizing DES key sends to client for the message that need to send after encrypting, and sends to server after perhaps the message that sends for needs of the DES key that gets access to of client utilization is encrypted.
In the present embodiment, because the encryption/decryption speed of DES algorithm than very fast, therefore, for the relatively long message of the information content, adopts the DES algorithm to carry out encryption and decryption, can improve transfer of data and data processing efficiency.
After server or client received the encryption message that the other side sends over, the same DES key that gets access to that utilizes was deciphered for encrypting message, thereby gets access to actual message.
As one embodiment of the present of invention; Before the message that server or client are sent needs is encrypted, can adopt the ZLIB algorithm that message is compressed earlier, and after client or server are deciphered the message that receives; Utilize the ZLIB algorithm that this message is decompressed equally; Thus, make the data of transmitting be data, to improve the efficient of transfer of data through overcompression.
Fig. 3 shows server and client side's in the Data Encrypting Transmission System that second embodiment of the invention provides structure, for the ease of explanation, only shows the part relevant with present embodiment.
Wherein server 31 comprises:
DES key production module 311 dynamically generates the DES key.
The first message sending module 313 utilizes said DES key to send to client for message after encrypting.
DES key acquisition module 321 with the said rsa encryption decrypt ciphertext that receives, obtains said DES key.
The second message sending module 322 utilizes said DES key to send to said server for message after encrypting.
Simultaneously, client 32 also comprises:
Login message generation module 323 generates user name, password, timestamp that has comprised client 32 and the right login message of RSA key that dynamically generates.
Whether correct login message detection module 314 receives the login message from client 32, and detect username and password in the login message and timestamp and whether be denoted as the current time.
After DES key acquisition module 321 got access to the server 31 dynamic DES keys that generate, client 32 had also comprised:
RSA key is to emptying module 324, and after having obtained said DES key, it is right to empty RSA key.
After client 32 or server 31 received the encryption message that the other side sends, client 32 also comprised:
Server and client side's structure can be used in the data encryption and transmission method embodiment one of aforementioned correspondence in the Data Encrypting Transmission System that second embodiment of the invention provides; Details repeat no more at this referring to the associated description of the invention described above first embodiment.
In embodiments of the present invention; The method that has adopted RSA to combine with the des encryption algorithm; Use the DES algorithm to encrypt as message; Use RSA Algorithm to encrypt simultaneously, thereby combined fast advantage of DES algorithm encryption/decryption speed and the safe advantage of RSA Algorithm, realized the transmission of data encryption safely and efficiently as the DES key.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a data encryption and transmission method is characterized in that, said method comprises the steps:
A. server dynamically generates DEA DES key, and to use the RSA PKI that dynamically generates from client be said DES secret key encryption, generates the rsa encryption ciphertext;
B. the client said rsa encryption decrypt ciphertext that will receive is obtained said DES key;
C. utilize the message that transmits between the ZLIB compression algorithm server and client side, and the message encryption after compressing is handled with said DES key.
2. the method for claim 1 is characterized in that, before said steps A, said method also comprises the steps:
Server receives and detects the login message from client, and said login message comprises user name, password, timestamp and the RSA PKI of client;
When all correct and timestamp is denoted as the current time when the username and password in the said login message, carry out said steps A.
3. method as claimed in claim 2 is characterized in that, timestamp in the said login message and password are with information-summary MD5 algorithm for encryption.
4. the method for claim 1 is characterized in that, after said step B, said method also comprises the steps:
It is right that client empties RSA key, and said RSA key is to comprising said RSA PKI and corresponding RSA private key thereof.
5. the method for claim 1 is characterized in that, after said step C, said method also comprises the steps:
Client/server is deciphered the message that receives with said DES key, and with the ZLIB algorithm decrypted message is decompressed.
6. a Data Encrypting Transmission System comprises server and at least one client, it is characterized in that said server comprises:
The DES key production module is used for dynamically generating the DES key;
The rsa encryption module, being used to adopt the RSA PKI that dynamically generates from said client is said DES secret key encryption, generates the rsa encryption ciphertext;
The first message sending module is used to utilize the ZLIB algorithm to compress for message, and the message after utilizing said DES key for compression sends to client after encrypting;
Said client comprises:
DES key acquisition module is used for the said rsa encryption decrypt ciphertext that receives is obtained said DES key;
The second message sending module is used to utilize the ZLIB algorithm to compress for message, and the message after utilizing said DES key for compression sends to said server after encrypting.
7. system as claimed in claim 6 is characterized in that, said server also comprises:
Whether correct login message detection module is used to receive the login message from client, and detect username and password in the said login message and timestamp and whether be denoted as the current time.
8. system as claimed in claim 6 is characterized in that, said client also comprises:
RSA key is used for after having obtained said DES key emptying module, and it is right to empty RSA key.
9. system as claimed in claim 6 is characterized in that, said client also comprises:
First deciphering module is used to utilize said DES key that the message that receives is deciphered, and utilizes the ZLIB algorithm that decrypted message is decompressed.
10. system as claimed in claim 6 is characterized in that, said server also comprises:
Second deciphering module is used to utilize said DES key that the message that receives is deciphered, and with the ZLIB algorithm decrypted message is decompressed.
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| CN201110301958A CN102333093A (en) | 2011-09-28 | 2011-09-28 | Data encryption transmission method and system |
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| CN201110301958A CN102333093A (en) | 2011-09-28 | 2011-09-28 | Data encryption transmission method and system |
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| CN102857503A (en) * | 2012-08-31 | 2013-01-02 | 成都国腾实业集团有限公司 | Secure wireless transmission method for fingerprint data |
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| CN103457995A (en) * | 2013-06-07 | 2013-12-18 | 北京百纳威尔科技有限公司 | Data information storage method for terminal equipment, terminal equipment and cloud terminal server |
| CN103812652A (en) * | 2012-11-14 | 2014-05-21 | 宁夏新航信息科技有限公司 | Computer information transmission intelligent encryption method |
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| CN107171798A (en) * | 2016-11-29 | 2017-09-15 | 黄宗美 | A kind of Data Encrypting Transmission System |
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Application publication date: 20120125 |