CN1885836A - Information filtering and secret-keeping method and apparatus in instantaneous communication - Google Patents

Information filtering and secret-keeping method and apparatus in instantaneous communication Download PDF

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Publication number
CN1885836A
CN1885836A CN 200610098513 CN200610098513A CN1885836A CN 1885836 A CN1885836 A CN 1885836A CN 200610098513 CN200610098513 CN 200610098513 CN 200610098513 A CN200610098513 A CN 200610098513A CN 1885836 A CN1885836 A CN 1885836A
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instant
ciphertext
key
instant message
instant messaging
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CN 200610098513
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CN100454909C (en
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徐进
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Abstract

The disclosed filter and secret method for information in immediate communication comprises: using a filter engine to filter target information to send the healthy and inhibit the unhealthy; using a system to encipher the information. This invention adds a enciphering/deciphering machine on transmission/receiving end respectively.

Description

Information filtering and secret method and apparatus in a kind of instant messaging
Technical field
The present invention relates to communication and computer realm, particularly information filtering and secret method and apparatus in instant messaging.
Background technology
In traditional instant messaging, the user can pass through instant communication software, realizes information chat point-to-point on the network, point-to-multipoint, like this, the people of a thousand li of originally being separated by can pass through network delivery information, send care mutually, so have huge relatively customer group, utilization rate is very high.
At present, the information in the instant messaging can transmit arbitrarily, and any content can be propagated in network by instantaneous communication system.Simultaneously, understand that slightly the personnel of network technology can be by various means intercepting messages, be easy to just can obtain the content that the user sends.
Because the information of transmitting in the existing instant communication software is not carried out restriction, cause of the transmission of the information of some unhealthy, uncivil even illegal reaction by network, network information communication environment is polluted, lure, instigate the minor to go on poor road easily, this has in fact constituted threat to the internet exchange platform; And because information is not carried out secrecy processing in the process of transmitting, be easy to be obtained, cause user's privacy can't obtain better protect, can not fully satisfy user's needs by other people.
Summary of the invention
The invention provides information filtering and secret method and apparatus in a kind of instant messaging, in order to solve the problem that information is unhealthy and information is stolen easily in the present network, so that make user's sensenet information interchange environment more healthy, safer.
The method that the present invention is used for instant messaging filtration instant message content comprises:
The instant communication users request transfers immediate news; Instant communication client calls filtering rule, judges whether the content of described instant message meets the transmission condition, if meet, then instant communication client sends described instant message, otherwise refusal sends this instant message.
When user's access of instant communicating system, detect the filtering rule whether available renewal is arranged in the network automatically, and download to instant communication client when detecting the filtering rule of available renewal.
In the instantaneous communication system running, regularly automatically detect in the network whether the filtering rule of available renewal is arranged, and download to instant communication client when detecting the filtering rule of available renewal.
This method also comprises step at transmitting terminal:
Before transferring immediate news, client is further called cryptographic algorithm the instant message after filtering is encrypted the formation ciphertext, and sends this ciphertext and encryption key.
This method also comprises step at receiving terminal:
The instant messaging receiving terminal receives the instant message that sends; The instant messaging receiving terminal calls decipherment algorithm elder generation decryption key, separates ciphertext again and forms expressly, and show this plaintext.
A kind of method that is used for the instant messaging information privacy comprises:
The instant communication users request transfers immediate news; The instant messaging transmitting terminal calls cryptographic algorithm the instant message that receives is encrypted the formation ciphertext, and sends this ciphertext and encryption key.
This method also comprises step at receiving terminal:
The instant messaging receiving terminal receives the instant message that sends; The instant messaging receiving terminal calls decipherment algorithm elder generation decryption key, separates ciphertext again and forms expressly, and show this plaintext.
A kind of device that is used for instant messaging comprises:
Input unit is used to accept the instant message that the user imports;
Signal filter is used to call filtering rule and judges whether described instant message meets the transmission condition;
Transmitting element is used for sending this instant message when described instant message meets the transmission condition.
This device also comprises:
Encryption equipment is used for calling cryptographic algorithm this instant message is encrypted the formation ciphertext, and this ciphertext and encryption key are outputed to described transmitting element before transferring immediate news.
Receiving element is used to receive the ciphertext and the key of transmission, and it is transmitted to decipher;
Decipher is used for calling decipherment algorithm elder generation decryption key after receiving instant message, separate ciphertext again;
Display unit is used to receive the plaintext through deciphering, and plaintext is shown to the user.
Be used for the device of information privacy in a kind of instant messaging, comprise:
Input unit is used to accept the instant message that the user imports;
Encryption equipment, being used to call cryptographic algorithm will encrypt the formation ciphertext to described instant message, and this ciphertext and encryption key are outputed to described transmitting element;
Transmitting element is used to send instant message ciphertext and the key that described encryption equipment is exported.
This device also comprises:
Receiving element is used to receive the ciphertext and the key of transmission, and it is transmitted to decipher;
Decipher is used for calling decipherment algorithm elder generation decryption key after receiving instant message, separate ciphertext again;
Display unit is used to receive the plaintext through deciphering, and plaintext is shown to the user.
Beneficial effect of the present invention is as follows:
Because the present invention has increased filter engine in instant communication software, the information that transmitting terminal sends is filtered, guaranteed the legitimacy of the information that transmitting terminal sends, guarantee the health of transmission information in the network.Simultaneously, owing to increased encryption equipment, information transmitted can not be obtained easily by other people, safeguarded network security preferably, guarantee that user's privacy is difficult for leaking, make the user can use instant communication software more relievedly in client sending end.
Description of drawings
Fig. 1 is information filtering and a secret structure chart in the present embodiment;
Fig. 2 is transmitting terminal message processing flow figure in the present embodiment;
Fig. 3 is receiving terminal message processing flow figure in the present embodiment;
Filter engine upgraded flow chart when Fig. 4 logined for user in the present embodiment;
Fig. 5 be in the present embodiment in the running filter engine upgrade flow chart.
Embodiment
Transmitting a large amount of unsound information in the present network in order to solve, and the network information the transmission process in easily by the problem that other people obtain, the present invention carries out filtration treatment (not belonging to filter area for information such as transmitting terminal address and destination addresses) to message content before instant communication client transfers immediate news.For improving the fail safe of instant message, before transferring immediate news, it is carried out encryption.
Present embodiment is provided with filter at instant message client, by calling filter engine the message content that will send is filtered, and stops spreading out of of unhealthy information.Further, can better guarantee the health of the network information regularly to the filter engine upgrading.
Present embodiment is installed encryption equipment in client sending end, and the information that send is carried out encryption, prevents that other people from obtaining the information that the user sends without approval, and is corresponding, at client's receiving terminal decipher is installed and deciphered accordingly.
Referring to Fig. 1, realize in the present embodiment that information filtering and the instantaneous communication system of maintaining secrecy comprise: client sending end, server 105 and client's receiving terminal.Wherein client sending end comprises input unit 101, signal filter 102, encryption equipment 103 and transmitting element 104.Wherein client's receiving terminal comprises receiving element 106, decipher 107 and display unit 108.
The user can receive and send messages when using instantaneous communication system simultaneously, and when user A sent information to user B, user A place client was exactly a client sending end, and user B place client is client's receiving terminal; In like manner, when user B sent information to user A, user B place client was exactly a client sending end, and user A place client is exactly client's receiving terminal.So the immediate communication device of operation instantaneous communication system comprises input unit 101, signal filter 102, encryption equipment 103, transmitting element 104, receiving element 106, decipher 107 and display unit 108.
Input unit 101 is used for user's input information, and information is sent to signal filter 102, is shown to the reason that user profile is under an embargo and sends in case of necessity.
The information of described user's input can be the instant message of user by the instantaneous communication system transmission, also can be Miscellaneous Documents or the multimedia messages that the user sends by instantaneous communication system.
Signal filter 102, be used to receive the information that input unit 101 sends, by using the inspection of information filtering engine whether to allow to send the information content of user's input, if, then information being sent to encryption equipment 103 encrypts, otherwise forbid sending this information, notice input unit 101 forbids sending the reason of prime information.
The filter engine filtering information is meant and utilizes filtering rule to the content in the instant message that promptly information such as literal, picture and annex are discerned.Filtering rule can be responsive literal, statement, the picture that is kept in the content library, and Rule of judgment etc.This content library can increase dynamically, for example increases the keyword that does not allow to appear in the information, sensitive words etc.; Overanxious engine also can strengthen, and for example can increase the identification of image content is filtered, and increases the identification filter to attachment files.
Encryption equipment 103, be used to receive the legal information that signal filter 102 sends, call cryptographic algorithm the information of user's input is encrypted, plain text encryption is become ciphertext, and call the key stored or generate key, ciphertext and key are together sent to transmitting element 104 according to certain condition.
Described key can be the key that has been kept in the local system, also can generate key according to certain condition when each transmission information.In order to guarantee that client's receiving terminal can untie key normally, must keep the cryptographic algorithm of described client sending end consistent, so instantaneous communication system does not carry out regular upgrading to key with the decipherment algorithm of client's receiving terminal.
Transmitting element 104 is used to receive key and the ciphertext that encryption equipment 103 sends, and sends it to the server 105 in the network.
Server 105 is used to receive ciphertext and key that client sending end sends, and this ciphertext and key is sent to the receiving element 106 of client's receiving terminal.
Receiving element 106 is used for ciphertext and key that reception server 105 sends, and it is transmitted to decipher 107.
Decipher 107 is used for ciphertext and key that receiving element 106 sends, and calls corresponding decipherment algorithm, solves key earlier, decrypt ciphertext is become expressly again, and plaintext is sent to display unit 108.
Display unit 108 is used to receive the plaintext through decipher 107 deciphering, and plaintext is shown to the user.
Referring to Fig. 2, present embodiment provides the application in client sending end of the filtration of information in the instant messaging and time slot scrambling, and the instantaneous communication system transmitting terminal receives the information of user's input, this information is filtered in filter, by after, pass through the encryption of encryption equipment 103 again, send to server 105.The concrete implementation step of this method is as follows:
Step 201: the user is the input information content in the input unit 101 of instantaneous communication system, clicks then to send, and information is sent to signal filter 102.
Step 202: after signal filter 102 received the information of input unit 101 transmissions, the recalls information filter engine filtered the information content.
For the health of the better maintaining network information, signal filter 102 can not filter the information that receives at once, stores a certain amount of information, and information is carried out the health that integral filter helps better to judge information.
Step 203: signal filter 102 checks whether this information meets the information filtering rule, if then execution in step 204, information (being the information plaintext) is sent to encryption equipment 103, otherwise the transmission of prohibition information.
After abandoning instant message, can also notify the user owing to prime information does not meet the filtering rule transmission that is under an embargo, the user can re-enter information.
Step 204: encryption equipment 103 receives information expressly from signal filter 102, by calling cryptographic algorithm plain text encryption is become ciphertext, calls the key that is stored in local system simultaneously or generates key.
If information expressly belongs to static file, encryption equipment 103 is encrypted it after can receiving complete plaintext again, and ciphertext is sent to server 105; If static file is excessive, also can be divided into several packets and send, encryption equipment 103 is encrypted each packet or every several packet, forms several incomplete relatively ciphertexts, sends to server 105 by transmitting element 104 respectively; If information expressly belongs to living document, the many form transmission of living document with Streaming Media, encryption equipment 103 is just encrypted it after can receiving the part files in stream media, forms incomplete relatively ciphertext, and incomplete relatively ciphertext is sent to server 105 by transmitting element 104; Again it is encrypted after also can receiving complete files in stream media, form complete ciphertext, complete ciphertext is sent to server 105.
If a plurality of ciphertexts are arranged, then a ciphertext is used a key, and perhaps a plurality of ciphertexts are used same key.Safer for network, ciphertext is with a key in the present embodiment.
Step 205: encryption equipment 103 sends to the webserver 105 with ciphertext and key by transmitting element 104.
Referring to Fig. 3, present embodiment provides the application at the client receiving terminal of the filtration of information in the instant messaging and time slot scrambling, key and ciphertext that instantaneous communication system receiving terminal reception server 105 transmits, by decoder it is decrypted, form expressly, display unit 108 expressly is shown to the receiving terminal user with this.The concrete implementation step of this method is as follows:
Step 301: the ciphertext and the key that send by 106 reception servers 105 of the receiving element in client's receiving terminal, and send it to decipher 107.Key that receives and ciphertext may be a plurality of, and this ciphertext may be incomplete relatively.
Step 302: call corresponding decipherment algorithm by decipher 107, solve key earlier, again decrypt ciphertext is become expressly, plaintext is sent to display unit 108.If decipher 107 receives a plurality of keys and relative imperfect ciphertext, then decipher 107 is distinguished decruption key and ciphertexts earlier, a plurality of ciphertexts after will deciphering again, and promptly a plurality of plaintexts send to display unit 108 after being integrated into complete plaintext.
Step 303: the plaintext that display unit 108 will receive is shown to the user.
The plaintext that described input unit 101 sends can be incomplete same with the plaintext after deciphering that display unit 108 receives, but the deviation that guarantees the plaintext after the deciphering within the specific limits, makes the original intent that the user of client's receiving terminal can correct understanding client sending end user.
Referring to Fig. 4, in the present embodiment in the instant messaging information filtering engine by the method for network upgrade, when user's access of instant communicating system, signal filter 102 detects in the networks whether available filter engine is arranged automatically, if having, and down loading updating then, if do not have, then referring to Fig. 5.The concrete implementation step of this method is as follows:
Step 401: user's access of instant communicating system.
Step 402: the signal filter 102 in the instantaneous communication system detects the filter engine whether available renewal is arranged in the network automatically, if having, then execution in step 403, otherwise finishes operation.
Step 403: signal filter 102 is downloaded the filter engine of available renewal automatically.
Step 404: signal filter 102 upgrades existing filter engine in the local instantaneous communication system.
Detection and download for filter engine can be finished by signal filter 102, also can be finished by instantaneous communication system.
If the user does not have mount message filter 102 or filter engine when instantaneous communication system is installed, when moving instantaneous communication system, the user also can adopt this method, by whether information available filter 102 or filter engine are arranged in the instantaneous communication system search network.
Referring to Fig. 5, in the present embodiment in the instant messaging information filtering engine use in the process of instantaneous communication system the user by the method for network upgrade, signal filter 102 detects in the network whether available filter engine is arranged automatically, if have, down loading updating then, otherwise continue to detect.The concrete implementation step of this method is as follows:
Step 501: the automatic log-on message filter 102 of instantaneous communication system.
Step 502: signal filter 102 detects the filter engine whether available renewal is arranged in the network automatically, if having, then execution in step 503, otherwise continues regularly to detect, and execution in step 502 is till the user withdraws from instantaneous communication system.
Described regular detection can be controlled by a device with time controlled function.Can timer be installed in signal filter 102 and control regular detection, timer trigger message filter 102 detection networks regularly also can be installed in the outside of signal filter 102.
Step 503: signal filter 102 is downloaded the filter engine of available renewal.
Step 504: signal filter 102 upgrades existing filter engine in the local system, and execution in step 502 again, regularly detect.
Filter engine update method shown in Figure 5 needs only instantaneous communication system in continuous operation, and this method is constantly circulation execution just, till the user withdraws from instantaneous communication system.
Fig. 4 and shown in Figure 5 if the filter engine of detected available renewal is replenishing of existing filter engine, so only needs to add the filter engine of available renewal on the basis of existing filter engine; If the filter engine of detected available renewal has comprised existing filter engine and new filter engine, so just replace existing filter engine, directly use the filter engine of available renewal.
Described filter engine can not installed with instant communication system, downloads the update method of information filtering engine when logining with reference to the user from network separately; Also can install with instant communication system.
Present embodiment provides a kind of method of non-online upgrading filter engine, the user can be in this locality the AKU of direct mount message filter 102 or filter engine the upgrade filter engine or the filter engine of when the AKU of instantaneous communication system is installed, directly upgrading.
Because the present invention has increased filter 102 in instant communication software, by calling filter engine the information that transmitting terminal sends is filtered, effectively stop the transmission of flame in network, helped creating a health, good network information interchange environment.The invention provides the upgrade method of filter engine, further solved in the future network transmission demand the information health.Simultaneously, owing to increased encryption equipment 103 at transmitting terminal, information transmitted can not be obtained by other people easily, safeguarded network security, assurance user's that can be practical rights and interests, satisfy the demand of user, make the user can use instant communication software more relievedly for information privacy in the internet exchange.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims (14)

1, a kind of method that is used for instant messaging filtration instant message content is characterized in that, may further comprise the steps:
The instant communication users request transfers immediate news;
Instant communication client calls filtering rule, judges whether the content of described instant message meets the transmission condition, if meet, then instant communication client sends described instant message, otherwise refusal sends this instant message.
2, the method that is used for instant messaging as claimed in claim 1, it is characterized in that, when user's access of instant communicating system, detect the filtering rule whether available renewal is arranged in the network automatically, and download to instant communication client when detecting the filtering rule of available renewal.
3, the method that is used for instant messaging as claimed in claim 1, it is characterized in that, in the instantaneous communication system running, regularly automatically detect in the network whether the filtering rule of available renewal is arranged, and download to instant communication client when detecting the filtering rule of available renewal.
4, as each described method that is used for instant messaging in the claim 1 to 3, it is characterized in that, before transferring immediate news, client is further called cryptographic algorithm the instant message after filtering is encrypted the formation ciphertext, and sends this ciphertext and encryption key.
5, the method that is used for instant messaging as claimed in claim 4 is characterized in that, described key is an already present key in local system, or the key that generates according to specified conditions when transferring immediate news.
6, the method that is used for instant messaging as claimed in claim 4 is characterized in that, also comprises step:
The instant messaging receiving terminal receives the instant message that sends;
The instant messaging receiving terminal calls decipherment algorithm elder generation decryption key, separates ciphertext again and forms expressly, and show this plaintext.
7, the method for information privacy in a kind of instant messaging is characterized in that, may further comprise the steps:
The instant communication users request transfers immediate news;
The instant messaging transmitting terminal calls cryptographic algorithm the instant message that sends is encrypted the formation ciphertext, and sends this ciphertext and encryption key.
8, the method for information privacy as claimed in claim 7 is characterized in that, described key is an already present key in local system, or the key that generates according to specified conditions when transferring immediate news.
9, as the method for information privacy as described in claim 7 or 8, it is characterized in that, also comprise step:
The instant messaging receiving terminal receives the instant message that sends;
The instant messaging receiving terminal calls decipherment algorithm elder generation decryption key, separates ciphertext again and forms expressly, and show this plaintext.
10, a kind of device that is used for instant messaging is characterized in that, comprising:
Input unit is used to accept the instant message that the user imports;
Signal filter is used to call filtering rule and judges whether described instant message meets the transmission condition;
Transmitting element is used for sending this instant message when described instant message meets the transmission condition.
11, the device that is used for instant messaging as claimed in claim 10 is characterized in that, this device also comprises:
Encryption equipment is used for calling cryptographic algorithm this instant message is encrypted the formation ciphertext, and this ciphertext and encryption key are outputed to described transmitting element before transferring immediate news.
12, the device that is used for instant messaging as claimed in claim 10 is characterized in that, this device also comprises:
Receiving element is used to receive the ciphertext and the key of transmission, and it is transmitted to decipher;
Decipher is used for calling decipherment algorithm elder generation decryption key after receiving instant message, separate ciphertext again and form expressly;
Display unit is used to receive the plaintext through deciphering, and this expressly is shown to the user.
13, be used for the device of information privacy in a kind of instant messaging, it is characterized in that, comprising:
Input unit is used to accept the instant message that the user imports;
Encryption equipment, being used to call cryptographic algorithm will encrypt the formation ciphertext to described instant message, and this ciphertext and encryption key are outputed to transmitting element;
Transmitting element is used to send instant message ciphertext and the key that described encryption equipment is exported.
14, the device that is used for information privacy as claimed in claim 13 is characterized in that, this device also comprises:
Receiving element is used to receive the ciphertext and the key of transmission, and it is transmitted to decipher;
Decipher is used for calling decipherment algorithm elder generation decryption key after receiving instant message, separate ciphertext again;
Display unit is used to receive the plaintext through deciphering, and plaintext is shown to the user.
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CN101257411B (en) * 2007-03-02 2011-04-13 华硕电脑股份有限公司 Method and system for monitoring real-time communication
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CN102227113A (en) * 2011-05-31 2011-10-26 广州华多网络科技有限公司 System and method for realizing filtering communication message
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CN101572698B (en) * 2008-04-30 2014-07-02 北京明朝万达科技有限公司 Network transmission common encryption method for files
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CN103973543A (en) * 2013-02-05 2014-08-06 中国移动通信集团公司 Method and device for instant messaging
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