CN103037364A - Secret communication method - Google Patents
Secret communication method Download PDFInfo
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- CN103037364A CN103037364A CN201210533591XA CN201210533591A CN103037364A CN 103037364 A CN103037364 A CN 103037364A CN 201210533591X A CN201210533591X A CN 201210533591XA CN 201210533591 A CN201210533591 A CN 201210533591A CN 103037364 A CN103037364 A CN 103037364A
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Abstract
The invention relates to a private network terminal and a method of achieving implementing communication of the private network terminal through a network. The private network terminal comprises a central processing unit (CPU) unit, an emission module and a receiving module, wherein the private network terminal further comprises a file identification recognition module of a special file, an encryption arithmetic module and a deciphering arithmetic module. The file identification recognition module is used for reading the file identification of the special file which is written in a card and judging the style of the card, and reading the user information by interaction of the card data, when the card is a private network card, the encryption arithmetic module is used for conducting encryption of information of sent files by utilizing of an encryption arithmetic, and when the card is the private network card, the deciphering arithmetic module conducts deciphering operation of the received encryption information and then outputs the received encryption information by utilizing of a deciphering arithmetic. The private network terminal and the method of achieving implementing communication of the private network terminal through the network distinguish the private network card by reading and judging the file identification of the special file, and conduct encryption for the information which is sent by a private network user and deciphering of the received information, and achieve communication secrecy of a mobile private network user, and the network does not need building again.
Description
Technical field
The present invention relates to field of mobile communication, particularly the secure communication of the private network in the field of mobile communication.
Background technology
In order to realize mobile private network user's communication security, and provide the mobile network of service not do extensive adjustment, must need to provide private network portable terminal (hereinafter to be referred as the private network terminal) and special network card.
According to R-UIM(Removable User Identity Module in TIA/EIA/IS-820 standard and the GSM11.11 standard, separable subscriber identification module) DF(private file) with the EF(constituent instruments) definition of file structure, document number is used for addressing or identifies a specific file, with a hexadecimal representation of two bytes.Wherein 7F25 is the file identification of CDMA private file, and 7F20 is the file identification of GSM private file, and 7F26-7F2F is the document retaining sign.
At present in order to realize the secure communication of private network, mainly by following several modes:
Software instruction is shaken hands: send out mutually handshake by private network terminal and card, realize private network user's differentiation;
The hardware specific field reads: setting specific fields in generic card is that the private network user uses.
Yet there is following problem in existing scheme:
Software instruction is shaken hands, and the instruction of shaking hands of design private network terminal and special network card needs construction cycle of long period, present terminal and card are changed quite large, and the danger that may occur divulging a secret;
And read by the hardware specific field, on GSM SIM card and CDMA UIM card, all there is not most suitable reserved field to be used for private network user's differentiation at present.
Summary of the invention
The object of the present invention is to provide a kind of private network terminal and private network terminal to realize the method for communication by network, in the situation that construction network is again realized mobile private network user's communication security.
To achieve these goals, the invention provides a kind of private network terminal realizes communication by network method, wherein, may further comprise the steps:
The file identification identification step of private file, the file identification identification module of private file read the file identification of the private file that is written to card and judge the type of described card, simultaneously by reading user profile with described card data interaction;
The fileinfo encrypting step, when described card is special network card, during communication, enciphering algorithm module utilizes cryptographic algorithm that the fileinfo that sends is encrypted between the private network terminal;
Forwarding step, the sending module fileinfo after with described encryption utilizes network to send called private network terminal to;
Receiving step, described called private network terminal receives information after the encryption that caller private network terminal sends by network with receiver module;
The fileinfo decryption step, when described card is special network card, between the private network terminal during communication, the decipherment algorithm module utilizes decipherment algorithm that the enciphered message that receives is decrypted output after the operation,
File comparison step contrasts to judge the file before encrypting and the file after the encryption whether file is changed.
Above-mentioned private network terminal realizes the method for communication by network, wherein, and the following operation of the concrete execution of the file identification identification step of described private file:
Read the file identification of the described private file that is written to described card, when the file identification of described private file be 7F26 in the 7F2F any one the time, judge that described card is special network card, simultaneously by reading user profile with described special network card data interaction.
Above-mentioned private network terminal realizes the method for communication by network, wherein, when the file identification of described private file is 7F20 or 7F25, only carry out file identification identification step, forwarding step and the receiving step of private file, directly export the information that receives behind the receiving step.
Private network terminal of the present invention and private network terminal realize the method for communication by network, identify special network card by reading the file identification of judging private file, and the information and executing that the private network user sends encrypted, the information and executing deciphering that receives, again the situation of construction network has realized mobile private network user's communication security.
Embodiment
Private network terminal of the present invention comprises outside the conventional modules such as CPU module, transmission and receiver module of existing mobile phone, also comprises in addition following part:
The file identification identification module of private file, be used for reading and judging the file identification of the private file that is written to special network card, when the file identification of private file be 7F26 in the 7F2F any one the time, the file identification identification module of private file judges that this card is special network card, and by reading user profile with the data interaction of special network card, select in an embodiment of the present invention 7F2D, as shown in Figure 1;
Enciphering algorithm module when card is special network card, utilizes cryptographic algorithm that the fileinfo that sends is encrypted when the private network terminal is carried out communication;
The decipherment algorithm module when card is special network card, utilizes decipherment algorithm that the encrypt file information that receives is decrypted the rear output of operation;
Send and the information of receiver module after will encrypting utilizes network to send called private network terminal to, receive simultaneously the information of caller private network after by the encryption of network transmission.
Above-mentioned module all is connected with the CPU module.
Private network terminal of the present invention realizes that by network the method for communication comprises the steps:
The file identification identification step of private file, the file identification identification module of private file reads the file identification of the private file that is written to special network card and judges, when the file identification of private file be 7F26 in the 7F2F any one the time, the file identification identification module of private file judges that this card is special network card, and by reading user profile with the data interaction of special network card, select in an embodiment of the present invention 7F2D;
The fileinfo encrypting step is special network card when blocking, and when realizing the communication between the private network terminal, enciphering algorithm module utilizes cryptographic algorithm that fileinfo is encrypted;
Forwarding step, the information after sending module will be encrypted utilize network to send called private network terminal to;
Receiving step, receiver module receive the information after the encryption that caller private network terminal sends by network;
Fileinfo decryption step, decipherment algorithm module are exported after utilizing decipherment algorithm that the enciphered message that receives is decrypted operation.
When the called subscriber was domestic consumer, the private network coded communication just can't successful call, because called subscriber's terminal can't be decrypted enciphered message
File comparison step contrasts to judge the file before encrypting and the file after the encryption whether file is changed.
Private network terminal of the present invention is when using generic card, and the file identification identification module of private file judges that card is not special network card, and shielding enciphering algorithm module and deciphering algoritic module are equal to ordinary terminal.
Certainly; the present invention also can have other various embodiments; in the situation that do not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (3)
1. the method for a secure communication is characterized in that, may further comprise the steps:
The file identification identification step of private file, the file identification identification module of private file read the file identification of the private file that is written to card and judge the type of described card, simultaneously by reading user profile with described card data interaction;
The fileinfo encrypting step, when described card is special network card, during communication, enciphering algorithm module utilizes cryptographic algorithm that the fileinfo that sends is encrypted between the private network terminal;
Forwarding step, the sending module fileinfo after with described encryption utilizes network to send called private network terminal to;
Receiving step, described called private network terminal receives information after the encryption that caller private network terminal sends by network with receiver module;
The fileinfo decryption step, when described card is special network card, between the private network terminal during communication, the decipherment algorithm module utilizes decipherment algorithm that the enciphered message that receives is decrypted output after the operation.
2. the method for secure communication according to claim 1 is characterized in that, the following operation of the concrete execution of the file identification identification step of described private file:
Read the file identification of the described private file that is written to described card, when the file identification of described private file be 7F26 in the 7F2F any one the time, judge that described card is special network card, simultaneously by reading user profile with described special network card data interaction.
3. the method for secure communication according to claim 1 and 2, it is characterized in that, when the file identification of described private file is 7F20 or 7F25, only carry out file identification identification step, forwarding step and the receiving step of private file, directly export the information that receives behind the receiving step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210533591XA CN103037364A (en) | 2012-12-12 | 2012-12-12 | Secret communication method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210533591XA CN103037364A (en) | 2012-12-12 | 2012-12-12 | Secret communication method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103037364A true CN103037364A (en) | 2013-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210533591XA Pending CN103037364A (en) | 2012-12-12 | 2012-12-12 | Secret communication method |
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| Country | Link |
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| CN (1) | CN103037364A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040044902A1 (en) * | 2002-08-29 | 2004-03-04 | Luthi Peter O. | Method and apparatus for multi-level security implementation |
| CN1750696A (en) * | 2005-10-08 | 2006-03-22 | 中国联合通信有限公司 | Special net terminal and method for carrying out special net communication by network |
| CN101056471A (en) * | 2007-05-31 | 2007-10-17 | 中兴通讯股份有限公司 | Special network card implementation device and method |
-
2012
- 2012-12-12 CN CN201210533591XA patent/CN103037364A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040044902A1 (en) * | 2002-08-29 | 2004-03-04 | Luthi Peter O. | Method and apparatus for multi-level security implementation |
| CN1750696A (en) * | 2005-10-08 | 2006-03-22 | 中国联合通信有限公司 | Special net terminal and method for carrying out special net communication by network |
| CN101056471A (en) * | 2007-05-31 | 2007-10-17 | 中兴通讯股份有限公司 | Special network card implementation device and method |
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| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130410 |