CN107342977A - Suitable for the information security method of point-to-point instant messaging - Google Patents
Suitable for the information security method of point-to-point instant messaging Download PDFInfo
- Publication number
- CN107342977A CN107342977A CN201710385176.7A CN201710385176A CN107342977A CN 107342977 A CN107342977 A CN 107342977A CN 201710385176 A CN201710385176 A CN 201710385176A CN 107342977 A CN107342977 A CN 107342977A
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- Prior art keywords
- information
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- sender
- key
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
- H04L63/045—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload wherein the sending and receiving network entities apply hybrid encryption, i.e. combination of symmetric and asymmetric encryption
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
- H04L51/04—Real-time or near real-time messaging, e.g. instant messaging [IM]
-
- 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
- H04L63/06—Network architectures or network communication protocols for network security for supporting key management in a packet data network
- H04L63/061—Network architectures or network communication protocols for network security for supporting key management in a packet data network for key exchange, e.g. in peer-to-peer networks
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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
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
- H04L9/3247—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures
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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Hardware Design (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Computer And Data Communications (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention discloses a kind of information security method suitable for point-to-point instant messaging, comprise the following steps：Information sender and receiving party are exchanged with each other after establishing point-to-point connection and preserve other side's public key；The information acquisition cipher-text information A that information sender needs to transmit using its caused symmetric key encryption；Information sender obtains cipher-text information C after the symmetric key is encrypted using the other side's public key preserved；Information sender will obtain encrypting traffic after the cipher-text information A and cipher-text information C sequence encapsulation, and the encrypting traffic is sent to described information recipient；The encrypting traffic is decrypted using its private key by receiving party, reads the information for needing to transmit.The information of point-to-point transmission can be encrypted by way of asymmetric encryption and symmetric cryptography are combined, ensure the security of communication process, while simplify the complexity of encryption and decryption computing.
Description
Technical field
The present invention relates to instant messaging field, more particularly to a kind of information privacy suitable for point-to-point instant messaging
Method.
Background technology
Instant messaging is the business for referring to send and receive immediately internet information etc., including Email, short message,
The communication tools such as QQ, wechat.By the way of plaintext transmission, the information transmitted does not have current most of instant messaging means
Security protection means, easily it is trapped, distorts；Small part instant communication software provides the means of information encryption, but uses
There are the information privacy means at center, key cannot be guaranteed safely, and information encryption safe grade is low, is easily cracked, practical valency
It is worth low, the leakage of a state or party secret easily occurs.
The content of the invention
It is an object of the invention to solve at least the above, and provide the advantages of at least will be described later.
It is a still further object of the present invention to provide a kind of information security method suitable for point-to-point instant messaging, it can
The information of point-to-point transmission is encrypted by way of asymmetric encryption and symmetric cryptography are combined, guarantee communicated
The security of journey, while simplify the complexity of encryption and decryption computing.
In order to realize according to object of the present invention and further advantage, there is provided one kind is applied to point-to-point instant messaging
Information security method, it is characterised in that comprise the following steps：
Information sender and receiving party are exchanged with each other after establishing point-to-point connection and preserve other side's public key；
The information acquisition cipher-text information A that information sender needs to transmit using its caused symmetric key encryption；
Information sender obtains cipher-text information C after the symmetric key is encrypted using the other side's public key preserved；
Information sender will obtain encrypting traffic after the cipher-text information A and cipher-text information C sequence encapsulation, and will
The encrypting traffic is sent to described information recipient；
The encrypting traffic is decrypted using its private key by receiving party, reads the information for needing to transmit.
Preferably, described information sender uses the randomizer with noise source to generate true random number as institute
State symmetric key.
Preferably, described information sender carries out Hash operation to the information that needs transmit and obtains cryptographic Hash, and uses
The private key of described information sender carries out computing acquisition signed data of signing to the cryptographic Hash；
Described in described information sender will obtain after cipher-text information A, cipher-text information C and signed data in order array packages
Encrypting traffic.
Preferably, described information sender is encrypted to the symmetric key using its private key and obtains cipher-text information B；
Described information sender carries out Hash operation to the information that needs transmit and obtains cryptographic Hash, and is sent out using described information
The private key for the side of sending carries out computing acquisition signed data of signing to the cryptographic Hash；
Described information sender is by cipher-text information A, cipher-text information B, cipher-text information C and signed data array packages in order
After obtain the encrypting traffic.
Preferably, described information sender and described information recipient are exchanged with each other and no longer entered after preserving other side's public key
The secondary exchange of row public key.
Preferably, described information sender is decrypted to operate and review and needed using its public key to the encrypting traffic
The information to be transmitted.
Preferably, described information sender is entered using its public key to the cipher-text information B in the encrypting traffic
Row decryption, is obtained symmetric key, cipher-text information C is symmetrically decrypted using the symmetric key, reviews the letter for needing to transmit
Breath.
Preferably, described information recipient use the process that the encrypting traffic is decrypted its private key include with
Lower step：
Described information recipient is carried out using its private key to the cipher-text information C in the encrypting traffic that receives
Decryption, obtains the symmetric key；
Described information recipient is symmetrically decrypted using the symmetric key to the cipher-text information A, obtains information hair
The side of sending needs the information transmitted.
Preferably, it is further comprising the steps of：Described information recipient is using other side's public key of preservation to the institute that receives
State encrypting traffic and carry out Hash operation acquisition cryptographic Hash, the cryptographic Hash with decrypting in the obtained signed data is carried out afterwards
Contrast verification, to determine to decrypt the integrality for the information that obtained needs transmit.
Preferably, the encrypting traffic is transmitted by JICQ.
The present invention comprises at least following beneficial effect：
The both sides of information transmission are firstly the need of the respective public key of exchange；Information sender produces true random number as biography every time
The symmetric key of information is passed, receiving party is passed to after other side's public key encryption；By the symmetric encipherment algorithm of true random number and
Rivest, shamir, adelman is combined the information transmitted to needs and generation encrypting traffic is encrypted, and encrypting traffic only has information
Receiving-transmitting sides can be parsed using private key, and receiving party can also verify the information for needing to transmit by signed data simultaneously
Integrality, it is ensured that need the security of information transmitted.
In summary, the present invention utilize in rivest, shamir, adelman public key can disclosed characteristic, by unsymmetrical key pair
In encryption key of the public key as the symmetric key (session key) of message sender, preserved for other side, in communication process,
The information not only transmitted to needs has carried out symmetric cryptography and asymmetric encryption, and encryption has also been carried out to symmetric key and has been passed
It is defeated, it is ensured that the security of communication process, while simplify the complexity of encryption and decryption computing.
Further advantage, target and the feature of the present invention embodies part by following explanation, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Brief description of the drawings
Fig. 1 is the flow chart of the information security method of the present invention suitable for point-to-point instant messaging；
Fig. 2 is the encryption of the information security method suitable for point-to-point instant messaging described in one embodiment of the invention
The structural representation that data flow is produced and transmitted.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to specification text
Word can be implemented according to this.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or more
The presence or addition of individual other elements or its combination.
As shown in figure 1, the present invention provides a kind of information security method suitable for point-to-point instant messaging, its feature exists
In comprising the following steps：
Information sender and receiving party are exchanged with each other after establishing point-to-point connection and preserve other side's public key；Information is sent
Its caused symmetric key encryption of Fang Caiyong needs the information acquisition cipher-text information A transmitted；Information sender is using pair preserved
Square public key obtains cipher-text information C after the symmetric key is encrypted；Information sender is by the cipher-text information A and described close
Encrypting traffic is obtained after literary information C sequences encapsulation, and the encrypting traffic is sent to described information recipient；Information connects
The encrypting traffic is decrypted using its private key by debit, reads the information for needing to transmit.
In such scheme, information sender and receiving party obtained respectively after being calculated by asymmetric arithmetic a pair it is public
Key and private key, it is exchanged with each other afterwards when establishing point-to-point connection for the first time and preserves other side's public key；Added using asymmetric
In close algorithm public key (i.e. public key) can disclosed characteristic, using the public key of unsymmetrical key centering as the symmetrical of message sender
The encryption key of key (session key), preserved for other side, in communication process, the information not only transmitted to needs is carried out
Symmetric cryptography and asymmetric encryption, have also carried out encrypted transmission to symmetric key, it is ensured that the security of communication process, together
When simplify the complexity of encryption and decryption computing.In practical application, asymmetric arithmetic can use RSA, Elgamal, knapsack algorithm,
ECC and DH etc., symmetry algorithm can use DES, IDEA and AES etc..The information for needing to send can be word, voice, video
Or the information such as image.
In one preferred scheme, described information sender uses the randomizer generation true random number with noise source
As the symmetric key.In this programme, when encryption information is transmitted, information sender produces true random number as symmetrical close
Key, session key is that is to say, therefore, when transmitting message every time, symmetric key is all different and randomly generated, and
Transmission is encrypted by the public key for the message receiver for being stored in message sender, with reference to symmetric encipherment algorithm and it is asymmetric plus
The characteristics of close algorithm, computational complexity is reduced on the premise of information transmission safety is ensured.
In one preferred scheme, described information sender carries out Hash operation to the information that needs transmit and obtains cryptographic Hash,
And computing acquisition signed data of signing is carried out to the cryptographic Hash using the private key of described information sender；Described information sender
The encrypting traffic will be obtained after cipher-text information A, cipher-text information C and signed data in order array packages.
On the basis of such scheme, the information that this programme also transmits to needs has carried out signature computing, and playing prevents from needing
The purpose that the information to be transmitted is tampered.
As shown in Figure 1, 2, in a preferred scheme, described information sender is carried out using its private key to the symmetric key
Encryption obtains cipher-text information B；Described information sender carries out Hash operation to the information that needs transmit and obtains cryptographic Hash, and uses
The private key of described information sender carries out computing acquisition signed data of signing to the cryptographic Hash；Described information sender is by ciphertext
Information A, cipher-text information B, cipher-text information C and signed data obtain the encrypting traffic after array packages in order.Wherein, add
Ciphertext data stream includes cipher-text information A, cipher-text information B, cipher-text information C and signed data, can not only ensure the peace of communication process
Quan Xing, additionally it is possible to signature computing is carried out by the information transmitted to needs, plays the mesh for preventing needing the information transmitted to be tampered
's.
In one preferred scheme, after described information sender and described information recipient are exchanged with each other and preserve other side's public key
No longer carry out the secondary exchange of public key.After point-to-point data transfer is established, the exchange of public key is carried out first, is no longer carried out afterwards
The exchange of public key, the possibility that public key is trapped in transmitting procedure are reduced to minimum, ensure the security of encrypting traffic.
In one preferred scheme, operation is decrypted simultaneously to the encrypting traffic using its public key in described information sender
Review the information for needing to transmit.
In one preferred scheme, described information sender is believed the ciphertext in the encrypting traffic using its public key
Breath B is decrypted, and obtains symmetric key, cipher-text information C is symmetrically decrypted using the symmetric key, reviewing needs to transmit
Information.
In one preferred scheme, described information recipient uses the process that the encrypting traffic is decrypted its private key
Comprise the following steps：
Described information recipient is carried out using its private key to the cipher-text information C in the encrypting traffic that receives
Decryption, obtains the symmetric key；Described information recipient carries out symmetric solution using the symmetric key to the cipher-text information A
It is close, obtain the information that information sender needs to transmit.
It is further comprising the steps of in one preferred scheme：Described information recipient is using the other side's public key preserved to receiving
The encrypting traffic arrived carries out Hash operation and obtains cryptographic Hash, afterwards with decrypting the Hash in the obtained signed data
Value carries out contrast verification, to determine to decrypt the integrality for the information that obtained needs transmit.
In one preferred scheme, the encrypting traffic is transmitted by JICQ.JICQ include QQ,
Wechat, Messenger, AIM, ICQ, Skype etc..
Although embodiment of the present invention is disclosed as above, it is not restricted in specification and embodiment listed
With it can be applied to various suitable the field of the invention completely, can be easily for those skilled in the art
Other modification is realized, therefore under the universal limited without departing substantially from specification and equivalency range, the present invention is not limited to
Specific details and shown here as the legend with description.
Claims (10)
1. a kind of information security method suitable for point-to-point instant messaging, it is characterised in that comprise the following steps：
Information sender and receiving party are exchanged with each other after establishing point-to-point connection and preserve other side's public key；
The information acquisition cipher-text information A that information sender needs to transmit using its caused symmetric key encryption；
Information sender obtains cipher-text information C after the symmetric key is encrypted using the other side's public key preserved；
Information sender will obtain encrypting traffic after the cipher-text information A and cipher-text information C sequence encapsulation, and by described in
Encrypting traffic is sent to described information recipient；
The encrypting traffic is decrypted using its private key by receiving party, reads the information for needing to transmit.
2. it is applied to the information security method of point-to-point instant messaging as claimed in claim 1, it is characterised in that described information
Sender uses the randomizer with noise source to generate true random number as the symmetric key.
3. it is applied to the information security method of point-to-point instant messaging as claimed in claim 1, it is characterised in that
Described information sender carries out Hash operation to the information that needs transmit and obtains cryptographic Hash, and uses described information sender
Private key to the cryptographic Hash carry out sign computing obtain signed data；
Described information sender will obtain the encryption after cipher-text information A, cipher-text information C and signed data in order array packages
Data flow.
4. it is applied to the information security method of point-to-point instant messaging as claimed in claim 1, it is characterised in that
Described information sender is encrypted to the symmetric key using its private key and obtains cipher-text information B；
Described information sender carries out Hash operation to the information that needs transmit and obtains cryptographic Hash, and uses described information sender
Private key to the cryptographic Hash carry out sign computing obtain signed data；
Described information sender will obtain after cipher-text information A, cipher-text information B, cipher-text information C and signed data in order array packages
Obtain the encrypting traffic.
5. it is applied to the information security method of point-to-point instant messaging as claimed in claim 1, it is characterised in that described information
Sender and described information recipient are exchanged with each other and preserved the secondary exchange that public key is no longer carried out after other side's public key.
6. it is applied to the information security method of point-to-point instant messaging as claimed in claim 4, it is characterised in that described information
Sender is decrypted and reviewed the information for needing to transmit using its public key to the encrypting traffic.
7. it is applied to the information security method of point-to-point instant messaging as claimed in claim 6, it is characterised in that described information
The cipher-text information B in the encrypting traffic is decrypted using its public key by sender, is obtained symmetric key, is used institute
State symmetric key symmetrically to decrypt cipher-text information C, review the information for needing to transmit.
8. it is applied to the information security method of point-to-point instant messaging as claimed in claim 3, it is characterised in that described information
The process that the encrypting traffic is decrypted using its private key by recipient comprises the following steps：
Described information recipient is solved using its private key to the cipher-text information C in the encrypting traffic that receives
It is close, obtain the symmetric key；
Described information recipient is symmetrically decrypted using the symmetric key to the cipher-text information A, obtains information sender
Need the information transmitted.
9. as claimed in claim 8 be applied to point-to-point instant messaging information security method, it is characterised in that also include with
Lower step：Described information recipient carries out Hash operation to the encrypting traffic received using other side's public key of preservation and obtained
Cryptographic Hash is obtained, the cryptographic Hash with decrypting in the obtained signed data carries out contrast verification afterwards, to determine that decryption obtains
Need the integrality of information transmitted.
10. it is applied to the information security method of point-to-point instant messaging as claimed in claim 3, it is characterised in that described to add
Ciphertext data stream is transmitted by JICQ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710385176.7A CN107342977A (en) | 2017-05-26 | 2017-05-26 | Suitable for the information security method of point-to-point instant messaging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710385176.7A CN107342977A (en) | 2017-05-26 | 2017-05-26 | Suitable for the information security method of point-to-point instant messaging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107342977A true CN107342977A (en) | 2017-11-10 |
Family
ID=60220188
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710385176.7A Pending CN107342977A (en) | 2017-05-26 | 2017-05-26 | Suitable for the information security method of point-to-point instant messaging |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108390755A (en) * | 2018-01-10 | 2018-08-10 | 芯盾（北京）信息技术有限公司 | The safe input method of SIM pasting cards based on built-in security chip |
| CN108683688A (en) * | 2018-07-20 | 2018-10-19 | 中国建设银行股份有限公司浙江省分行 | A method of information transmission security is realized based on Digital Envelope Technology |
| CN108848091A (en) * | 2018-06-20 | 2018-11-20 | 上海织语网络科技有限公司 | A kind of mixed encryption method for instant messaging |
| CN109951378A (en) * | 2019-03-22 | 2019-06-28 | 西安电子科技大学 | File encryption transmission and sharing method in a kind of instant messaging |
| CN110493212A (en) * | 2019-08-13 | 2019-11-22 | 上海威尔立杰网络科技发展有限公司 | A kind of general purpose mail End to End Encryption method |
| CN110636502A (en) * | 2019-09-23 | 2019-12-31 | 华南理工大学 | Wireless encryption communication method and system |
| CN110855362A (en) * | 2019-11-18 | 2020-02-28 | 南京工程学院 | Secret communication method and system based on visible light LED matrix |
| CN111245771A (en) * | 2018-11-28 | 2020-06-05 | 深圳兆日科技股份有限公司 | Instant message encryption and decryption method, device, equipment and storage medium |
| CN112887972A (en) * | 2021-01-13 | 2021-06-01 | 浙江工业大学 | Android local area network secure communication method based on asymmetric encryption and APP |
| CN113347153A (en) * | 2021-05-07 | 2021-09-03 | 浙江保融科技股份有限公司 | File encryption transmission method combining identity authentication and dynamic key |
| CN113949511A (en) * | 2021-10-25 | 2022-01-18 | 浙江绿色慧联有限公司 | Information encryption method |
| CN114760081A (en) * | 2020-12-28 | 2022-07-15 | 富泰华工业（深圳）有限公司 | File encryption and decryption method and device and electronic equipment |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108390755A (en) * | 2018-01-10 | 2018-08-10 | 芯盾（北京）信息技术有限公司 | The safe input method of SIM pasting cards based on built-in security chip |
| CN108390755B (en) * | 2018-01-10 | 2021-01-12 | 北京芯盾集团有限公司 | Safety input method of SIM (subscriber identity Module) film-pasting card based on built-in safety chip |
| CN108848091A (en) * | 2018-06-20 | 2018-11-20 | 上海织语网络科技有限公司 | A kind of mixed encryption method for instant messaging |
| CN108683688A (en) * | 2018-07-20 | 2018-10-19 | 中国建设银行股份有限公司浙江省分行 | A method of information transmission security is realized based on Digital Envelope Technology |
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| CN109951378A (en) * | 2019-03-22 | 2019-06-28 | 西安电子科技大学 | File encryption transmission and sharing method in a kind of instant messaging |
| CN110493212A (en) * | 2019-08-13 | 2019-11-22 | 上海威尔立杰网络科技发展有限公司 | A kind of general purpose mail End to End Encryption method |
| CN110636502A (en) * | 2019-09-23 | 2019-12-31 | 华南理工大学 | Wireless encryption communication method and system |
| CN110855362A (en) * | 2019-11-18 | 2020-02-28 | 南京工程学院 | Secret communication method and system based on visible light LED matrix |
| CN114760081A (en) * | 2020-12-28 | 2022-07-15 | 富泰华工业（深圳）有限公司 | File encryption and decryption method and device and electronic equipment |
| CN112887972A (en) * | 2021-01-13 | 2021-06-01 | 浙江工业大学 | Android local area network secure communication method based on asymmetric encryption and APP |
| CN113347153A (en) * | 2021-05-07 | 2021-09-03 | 浙江保融科技股份有限公司 | File encryption transmission method combining identity authentication and dynamic key |
| CN113949511A (en) * | 2021-10-25 | 2022-01-18 | 浙江绿色慧联有限公司 | Information encryption method |
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Application publication date: 20171110 |