CN1285227C - Short message security method and SIM card for implementing short message security - Google Patents
Short message security method and SIM card for implementing short message security Download PDFInfo
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- CN1285227C CN1285227C CN 200310103507 CN200310103507A CN1285227C CN 1285227 C CN1285227 C CN 1285227C CN 200310103507 CN200310103507 CN 200310103507 CN 200310103507 A CN200310103507 A CN 200310103507A CN 1285227 C CN1285227 C CN 1285227C
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Abstract
The present invention discloses a short message secreting method which comprises the following steps: a short message is transmitted by a transmitting party; after being enciphered by an SIM of a receiving party, the short message is stored; after a user enters an STK menu and inputs a correct cipher key, the short message in a ciphertext form is deciphered by the SIM card, and the plaintext contents of the short message are displayed to the user. The method stores the short message in a ciphertext mode, which enables cryptographic reliability to be enhanced, and the requirement of secreting the short of the user can be better satisfied. The present invention also provides a method for ciphering protocols and a method for optionally setting protocol encryption or total encryption for the receiving party, which is characterized in that protocol information is carried when the transmitting party transmits a secreted short message, and the receiving party enciphers the short with the protocol information only; the user can have better use flexibility.
Description
Technical field
The present invention relates to the information security method in the field of mobile communication, relate in particular to the time slot scrambling of short message and be used to realize the SIM card of this method.
Background technology
Short message platform is a kind of business model that mobile radio network provides.Utilize short message platform, the mobile subscriber can send, receive the point-to-point short message.Because it is convenient that short message has transmitting-receiving, excellent honest and clean or the like the advantage of price, along with mobile subscriber's quick growth, Short Message Service is flourish, and the short message total amount reaches hundred million of hundreds ofs.The mobile subscriber has also therefrom obtained favorable service, and short message has become the approach commonly used of people's communication links.
The user is when using short message to transmit information, wish that sometimes the content of short message that sends has privacy, wish that promptly some short message can maintain secrecy, have only certain specific people just can see, but mobile phone also may be used by other people beyond the cellphone subscriber, as uses, loses or other people usurp or the like wittingly.Therefore, need could realize protection to the content-encrypt of short message to privacy.Because short message platform need monitor in real time to the content of short message of domestic consumer, therefore short message all is to adopt the clear data transmission at present, can not adopt mode to transmission data encipher to realize protection to the content of short message privacy.
For the problem that realizes that short message is maintained secrecy, existing part mobile phone terminal provides the short message function of keeping secret, its principle is that mobile phone terminal is provided with the access key of secret short message, effective identity with the checking user, when the user reads secret short message, must on terminal interface, import correct key, just can see the clear content of short message.Under this mode, content of short message remains with clear-text way and is stored in the SIM card, if when SIM card is placed in the another one mobile phone terminal, just can directly read the clear content of short message.Therefore the reliability of this secret mode is not high, and other people can understand the content of this short message easily, can not effectively prevent the leakage of individual secret.
Summary of the invention
In view of this, the technical problem to be solved in the present invention provides a kind of short message time slot scrambling, and the short message that need can be maintained secrecy is with the storage of ciphertext form, just can read its clear content, the reliability that raising is secret after must import correct key.
In order to solve the problems of the technologies described above, the invention provides a kind of short message time slot scrambling, may further comprise the steps:
(a) transmit leg sends SMS message;
(b) short message service center is forwarded to this short message recipient's mobile phone terminal;
(c) recipient's mobile phone terminal initiates to upgrade the short message file instruction to SIM card;
(d) SIM card monitors and upgrades the short message file instruction;
(e) SIM card is encrypted the back storage with the short message of receiving;
(f) recipient user enters the short message that the STK menu selects to read the ciphertext form;
(g) SIM card requires the user to import key, import correct key after, checking is passed through;
(h) SIM card is deciphered the short message of ciphertext form, its clear content is outputed on the mobile phone screen show.
Said method can all be maintained secrecy the short message that receives, and for the method that the short message of realizing only transmit leg being sent that has protocol information is maintained secrecy, needs further to limit on the basis of this method as follows:
In the described step (a), the short message transmit leg is to send the secret short message that has protocol information by the STK menu, perhaps sends common short message;
Described step (d) afterwards, also comprise step (d '): SIM card reads short message data and judges whether it is with protocol information, if execution in step (e) is preserved execution in step (f) otherwise do not encrypt promptly;
Described step (f) also comprises step (f ') afterwards: the short message of the whether ciphertext form that SIM card judges that the user reads, if, execution in step (g), otherwise directly show content of short message.
In order to realize all maintaining secrecy and selected settings of the secret dual mode of agreement, need that further qualification is as follows on the basis of the method that agreement is maintained secrecy:
Also comprise step between described step (d) and the step (d '): judge that the current receiver formula is to be set to whole encryptions? if, to execution in step (e) behind the short message affix protocol information that does not have protocol information, to the then direct execution in step (e) of the short message that has protocol information; If not, execution in step (d ').
In the above-mentioned time slot scrambling, be characterized in: when encrypting short message in the described step (e), do not comprise protocol information; Described step (f ') in, SIM card judges according to whether having protocol information in the short message whether this short message is the short message of ciphertext form.
In above-mentioned three kinds of time slot scramblings, be characterized in: described step (h) afterwards, can also comprise step: the short message unloading that user's selection will show, the transient area that SIM card is established the clear content unloading to of this short message in addition, the user must be by just can read the short message in this transient area behind the correct access key of STK menu input.
Another technical problem that the present invention will solve provides a kind of SIM card that is used to realize above-mentioned short message time slot scrambling, comprises sending module, receiver module and read module, it is characterized in that,
Described receiver module comprises:
Monitoring unit is used for the renewal short message file instruction that the monitoring cell-phone terminal is sent;
Encrypt and memory cell, the short message data that is used for receiving is encrypted the back storage;
Described read module comprises:
Read recognition unit, be used for the selection on the STK menu according to the user, whether the identification user will read short message;
Identity authenticating unit is used for requiring the user to import key when the user will read the short message of ciphertext form, and checking was passed through when the input key was correct;
Deciphering and output unit are used for after checking is passed through, and the short message of the ciphertext form that will read is deciphered, and its clear content is outputed on the mobile phone terminal screen.
Above-mentioned SIM card can be used for realizing all secret method, be used for realizing the method that agreement is maintained secrecy, and can further limit below doing on the basis of this SIM card:
Described sending module comprises:
Send recognition unit, be used for the selection on the STK menu according to the user, whether the identification user sends secret short message;
The information loading unit is used for the secret short message Additional Agreement information that will send;
Transmitting element is used to send the secret short message that loads behind the protocol information;
Described receiver module also comprises:
The agreement judging unit is used to read short message data and judges whether it is the secret short message that has protocol information, secret short message is delivered to encrypted and memory cell, does not preserve otherwise do not encrypt promptly;
Described read module also comprises:
The ciphertext judging unit is used to judge the whether short message of ciphertext form of the short message that will read.
Realize selecting being provided with and all maintain secrecy or method that agreement is maintained secrecy, can on the basis of the SIM card that realizes the agreement time slot scrambling, do following further qualification:
Described receiver module also comprises:
Mode is provided with the unit, is used for selecting to adopt whole encryptions or agreement cipher mode for the user;
Judging unit is set, be used for after receiving renewal short message file, the Set For Current that the unit is set according to mode judges whether the current receiver formula all encrypts, if, encrypt and memory cell not having to deliver to behind the short message affix protocol information of protocol information, the short message that will have a protocol information is directly delivered to and is encrypted and memory cell; If not, short message is delivered to the agreement judging unit;
Be used to realize the SIM card of above-mentioned three kinds of methods, be characterized in: when described encryption and memory cell are encrypted short message, do not comprise protocol information; Described ciphertext judging unit judges according to whether having protocol information in the short message whether this short message is the short message of ciphertext form.
Be used to realize the SIM card of above-mentioned three kinds of methods, be characterized in: described read module can also comprise a unloading unit and a transient area, described unloading unit is used for when the user selects the short message unloading that shows, the clear content of this short message is dumped to described transient area, described transient area is provided with access key, the user must just can read the short message in this transient area by behind the correct access key of STK menu input.
In sum, in the inventive method, recipient's SIM card is encrypted the back with the storage of ciphertext form with the short message of need to be keep secret, like this, just can't read secret short message on mobile phone terminal, must just can read by the user behind the correct key of input on the STK menu.Therefore the inventive method has improved the reliability of encrypting, and can better satisfy the demand that the user maintains secrecy to short message.The invention allows for the agreement method of encrypting, transmit leg has protocol information when sending secret short message, and the recipient only encrypts the short message that has protocol information; And can select to be set to that agreement is encrypted or whole method of encrypting the recipient, make the user have better use flexibility.
Description of drawings
Fig. 1 is the schematic diagram of the transmission receiving course of short message time slot scrambling of the present invention;
Fig. 2 is the flow chart of first embodiment of the invention short message time slot scrambling;
Fig. 3 is the functional block diagram that is used to realize the SIM card of first embodiment of the invention method;
Fig. 4 is the schematic diagram that is used to realize the STK menu of first embodiment of the invention method;
Fig. 5 is the flow chart of second embodiment of the invention short message time slot scrambling;
Fig. 6 is the functional block diagram that is used to realize the SIM card of second embodiment of the invention method;
Fig. 7 is the flow chart of third embodiment of the invention short message time slot scrambling;
Fig. 8 is the functional block diagram that is used to realize the SIM card of third embodiment of the invention method.
Embodiment
As shown in Figure 1, system of the present invention is made up of SIM card 2, transmit leg mobile phone terminal 3, short message service center 4, party B-subscriber 5, recipient's mobile phone terminal 6, recipient's SIM card 7 of party A-subscriber 1, transmit leg.Be the variation of SIM card with the difference of existing system.
In order to reach the purpose that short message is maintained secrecy, the method that the present invention takes is: after receiving short message, storage again after SIM card is encrypted the short message that will maintain secrecy, when reading with the mobile phone terminal menu like this, what see will be mess code, must enter the STK menu and import correct key, SIM card just can be seen clear content after the short message of the ciphertext form that will read is decrypted computing on terminal screen.
Which type of short message maintained secrecy multiple choices.First kind is the modes of all maintaining secrecy, and the recipient all maintains secrecy to all short messages of receiving, and the SIM card to transmit leg does not have specific (special) requirements like this, and is the most reliable to the protection of individual secret, but that the user reads short message is just not too convenient; Second kind is the mode that agreement is maintained secrecy, be to give transmit leg with power to make decision, when transmit leg will send secret short message, SIM card is given the subsidiary protocol information of going up in the content of short message, the recipient only encrypts the short message that has protocol information, this method reads conveniently, but some recipient wants the possible unencryption of the short message of maintaining secrecy; The third is to select to adopt mode all secret or that agreement is maintained secrecy, when having mobile phone public use or the like reason, the user can be set to whole encryptions by short message, encrypt and ought can be set to agreement when not required, flexibility is better like this, but the routine processes of SIM card can be complicated.
Can select below to adopt all or mode that agreement is maintained secrecy as first embodiment, will adopt the modes of all maintaining secrecy as second embodiment, the mode that adopts agreement to maintain secrecy as the 3rd embodiment, is elaborated to the present invention.
First embodiment
The recipient of present embodiment can select to be provided with the short message of receiving is adopted mode all secret or that agreement is maintained secrecy.As shown in Figure 2, present embodiment short message time slot scrambling may further comprise the steps:
Step 100, the party A-subscriber selects to send secret short message by the STK menu, and SIM card is the affix protocol information in content of short message, sends to short message service center by mobile phone terminal then;
Step 110, short message service center is forwarded to party B-subscriber's mobile phone terminal with this short message, and party B-subscriber's mobile phone terminal initiates to upgrade the short message instruction to SIM card;
It more than is process of transmitting.
Step 120, party B-subscriber's SIM card monitor upgrades the short message instruction;
Does step 130 judge that Set For Current is whole encryptions?
If, read short message data and judge whether it has protocol information (step 130a), if having, execution in step 150 if do not have, is given short message affix protocol information (step 130b), execution in step 150 again;
If not, carry out next step;
Step 140 reads short message data and judges whether it has protocol information, if, carry out next step, do not preserve otherwise do not encrypt promptly;
Step 150, party B-subscriber's SIM card are preserved with the ciphertext form after to the content-encrypt of short message;
It more than is receiving course.
Step 160, the party B-subscriber enters the STK menu, the short message of browsing the 6F3C file and selecting to read;
Whether step 170, SIM card according to having protocol information in the short message, the short message of the whether ciphertext form of judging that the user reads is if carry out next step, otherwise directly show content of short message;
Step 180, SIM card require the user to import key in the STK menu;
Step 190, SIM card judge whether the key of user's input is correct, if carry out next step, otherwise require the user to import once more;
Step 200, SIM card output to the contents decryption of the short message of ciphertext form on the terminal screen with its clear content.
More than for reading process.
In the step 100 of above-mentioned flow process, also can be that the user directly sends by mobile phone, or in the STK menu, send common short message that follow-up processing procedure all is identical.Described secret short message and common short message are to divide from the angle of transmit leg, and when recipient user reads, classify by ciphertext form short message and plaintext form short message.
Above-mentioned protocol information is meant whether discern this short message by confidentiality agreement additional being used in short message data is the information of secret short message, present embodiment adopts the HEX coded data string of information " * * * ciphertext: ", take the several bytes in content of short message front, but be not limited thereto.Accordingly, when the recipient reads content of short message, if preceding several byte is this particular data string, judge that then this short message is secret short message, SIM card is carried out cryptographic calculation to it.In the present embodiment, cryptographic calculation adopts the 3DES symmetry algorithm, does not comprise protocol information during encryption, because also will judge whether ciphertext form of the short message that reads with it in reading process, comprise protocol information if encrypt, the judgment mode when then must corresponding adjustment reading.It should be noted that in step 200 SIM card just is shown to the user with the clear data of short message, do not carry out and upgrade operation that therefore the short message data that is stored in the SIM card remains enciphered data.
As from the foregoing, the secret short message that the party A-subscriber sends is that the form with encrypt data is stored in the 6F3C memory block of party B-subscriber's SIM card, and what see by the mobile phone terminal interface is mess code, even SIM card is changed to other mobile phone terminal, also can't show its content.
In step 200, after the user reads the clear content of ciphertext form short message, can also increase the operation of a unloading, will open up a place earlier in SIM card in addition deposits the transient area of ciphertext form short message and access key is set, after the user selected unloading, SIM card stored the clear content of ciphertext form short message into this transient area.Like this, still can't see its clear content on the mobile phone terminal interface, and must enter specific STK menu, import the short message that just can read this transient area behind the correct access key.What the benefit of unloading was to see when the user browses is cleartext information, is convenient to select, and also need not to decipher once more, also can leave out the short message that can't read among the 6F3C simultaneously, in order to avoid the waste memory space.
Realize said method, need utilize the STK technology that SIM card is developed, STK menu and its handling process are disposed accordingly or revise.Wherein relevant STK menu configuration must have mandate when the secret mode of agreement wherein will be set as shown in Figure 4.
In order to realize above-mentioned transmission, receive and read process, be used for realizing that the SIM card of present embodiment short message time slot scrambling should be shaped on the program of encryption and decryption in advance and be provided with key, also needing increases and secret function associated unit in SIM card.Shown in Figure 3 is the functional block diagram of the secret relevant part of this SIM card and short message, comprises sending module 10, receiver module 20 and read module 30, and each module is made up of a plurality of relevant functional units.
Wherein, sending module 10 is made up of following functional unit:
Send recognition unit 11, be used for the selection on the STK menu according to the user, whether the identification user will send secret short message;
Information loading unit 12 is used for the secret short message Additional Agreement information that will send;
Transmitting element 13 is used to send the secret short message that loads behind the protocol information.
Wherein, receiver module 20 is made up of following functional unit:
Monitoring unit 21 is used for the renewal short message file instruction that the monitoring cell-phone terminal is sent;
Judging unit 22 is set, be used for after receiving renewal short message file, the Set For Current that the unit is set according to mode judges whether the current receiver formula all encrypts, if, encrypt and memory cell not having to deliver to behind the short message affix protocol information of protocol information, the short message that will have a protocol information is directly delivered to and is encrypted and memory cell; If not, short message is delivered to the agreement judging unit;
Agreement judging unit 23 is used to read short message data and judges whether it is the secret short message that has protocol information, secret short message is delivered to encrypted and memory cell, does not preserve otherwise do not encrypt promptly;
Encrypt and memory cell 24, be used for storing after the data encryption with short message;
Mode is provided with unit 25, is used for selecting to adopt whole encryptions or agreement cipher mode for the user.
Wherein, read module 30 is made up of following functional unit:
Read recognition unit 31, be used for the selection on the STK menu according to the user, whether the identification user will read short message;
Ciphertext judging unit 32 is used for when the user reads short message, judges the whether short message of ciphertext form of the short message that will read according to whether having protocol information;
Identity authenticating unit 33 is used for the requirement user and imports key, and checking was passed through when the input key was correct;
Deciphering and output unit 34 are used for after checking is passed through, and output on the mobile phone terminal screen with the short message deciphering of described ciphertext form and with its clear content.
Second embodiment
Present embodiment adopts the modes of all encrypting, its flow process as shown in Figure 5, the content of step 100-2 ~ 200-2 is identical with corresponding step among Fig. 2.
During transmission, adopt the send mode of first embodiment, but also can directly send by mobile phone;
In the receiving course, needn't judge whether protocols having information in the setting of current secret mode and the short message, promptly cancelled the step 130 and 140 among Fig. 2, after monitoring the instruction of renewal short message, to being stored in 6F3C with the ciphertext form after the whole encryptions of the short message of receiving;
Read in the process, needn't judge the whether short message of ciphertext form of the short message that reads, promptly cancel the step 170 among Fig. 2, other selection is read, authentication all is the same with the step that deciphering shows, also can carry out unloading and operate.
The following describes the structure of the SIM card that is used to realize present embodiment short message time slot scrambling, as shown in Figure 6.
Its sending module adopts the sending module of first embodiment to send, and comprises sending recognition unit, information loading unit and transmitting element, but also can adopt existing SIM card to finish;
Its receiver module is made up of monitoring unit, encryption and memory cell, and each Elementary Function is identical with the first embodiment corresponding units;
Its read module is formed by reading recognition unit, identity authenticating unit, deciphering and output unit, and each Elementary Function is identical with the first embodiment corresponding units.
The 3rd embodiment
The mode that present embodiment adopts fixing agreement to encrypt, its flow process as shown in Figure 7, the content of step 100-3 wherein ~ 200-3 is identical with corresponding step among Fig. 2.
Process of transmitting is identical with first embodiment's;
In the receiving course, do not select the judgement that is provided with, promptly cancel the step 130 among Fig. 2, receive behind the short message that the step that storage is judged, encrypted to the short message that has protocol information is the same with first embodiment;
The process that reads is identical with first embodiment, by selecting to read, to judge whether that the steps such as short message, authentication and deciphering demonstration of ciphertext form form, also can carry out follow-up unloading and operate.
The following describes the structure of the SIM card that is used to realize present embodiment short message time slot scrambling, as shown in Figure 8.
Its sending module is formed by sending recognition unit, information loading unit and transmitting element, and each Elementary Function is identical with the corresponding units of first embodiment;
Its receiver module is made up of monitoring unit, agreement judging unit, encryption and memory cell, and each Elementary Function is identical with the first embodiment corresponding units;
Its read module is formed by reading recognition unit, ciphertext judging unit, identity authenticating unit, deciphering and output unit, and each Elementary Function is identical with the first embodiment corresponding units.
On the basis of essence of the present invention, can also do various conversion to above embodiment.Protection scope of the present invention should be as the criterion with claims.
Claims (10)
1, a kind of short message time slot scrambling may further comprise the steps:
(a) transmit leg sends SMS message;
(b) short message service center is forwarded to this short message recipient's mobile phone terminal;
(c) recipient's mobile phone terminal initiates to upgrade the short message file instruction to SIM card;
(d) SIM card monitors and upgrades the short message file instruction;
(e) SIM card is encrypted the back storage with the short message of receiving;
(f) recipient user enters the short message that the STK menu selects to read the ciphertext form;
(g) SIM card requires the user to import key, import correct key after, checking is passed through;
(h) SIM card outputs on the mobile phone screen with the short message deciphering of ciphertext form and with its clear content and shows.
2, short message time slot scrambling as claimed in claim 1 is characterized in that:
In the described step (a), the short message transmit leg is to send the secret short message that has protocol information by the STK menu, perhaps sends common short message;
Described step (d) afterwards, also comprise step (d '): SIM card reads short message data and judges whether it is with protocol information, if execution in step (e) is preserved execution in step (f) otherwise do not encrypt promptly;
Described step (f) also comprises step (f ') afterwards: the short message of the whether ciphertext form that SIM card judges that the user reads, if, execution in step (g), otherwise directly show content of short message.
3, short message time slot scrambling as claimed in claim 2 is characterized in that:
Also comprise step between described step (d) and the step (d '): judge whether the current receiver formula is set to whole encryptions, if, to execution in step (e) behind the short message affix protocol information that does not have protocol information, to the then direct execution in step (e) of the short message that has protocol information; If not, execution in step (d ').
4, as claim 2 or 3 described short message time slot scramblings, it is characterized in that, when in the described step (e) short message received being encrypted, do not encrypt protocol information wherein; Described step (f ') in, SIM card judges according to whether having protocol information in the short message whether this short message is the short message of ciphertext form.
5, as claim 1,2 or 3 described short message time slot scramblings, it is characterized in that, described step (h) afterwards, also comprise step: the short message unloading that user's selection will show, the transient area that SIM card is established the clear content unloading to of this short message in addition, the user must be by just can read the short message in this transient area behind the correct access key of STK menu input.
6, a kind of SIM card that is used to realize that short message is maintained secrecy comprises sending module, receiver module and read module, it is characterized in that,
Described receiver module comprises:
Monitoring unit is used for the renewal short message file instruction that the monitoring cell-phone terminal is sent;
Encrypt and memory cell, the short message data that is used for receiving is encrypted the back storage;
Described read module comprises:
Read recognition unit, be used for the selection on the STK menu according to the user, whether the identification user will read short message;
Identity authenticating unit is used for requiring the user to import key when the user will read the short message of ciphertext form, and checking was passed through when the input key was correct;
Deciphering and output unit are used for after checking is passed through, and the short message of the ciphertext form that will read is deciphered, and its clear content is outputed on the mobile phone terminal screen.
7, SIM card as claimed in claim 6 is characterized in that:
Described sending module comprises:
Send recognition unit, be used for the selection on the STK menu according to the user, whether the identification user sends secret short message;
The information loading unit is used for the secret short message Additional Agreement information that will send;
Transmitting element is used to send the secret short message that loads behind the protocol information;
Described receiver module also comprises:
The agreement judging unit is used to read short message data and judges whether it is the secret short message that has protocol information, secret short message is delivered to encrypted and memory cell, does not preserve otherwise do not encrypt promptly;
Described read module also comprises:
The ciphertext judging unit is used to judge the whether short message of ciphertext form of the short message that will read.
8, SIM card as claimed in claim 7 is characterized in that, described receiver module also comprises:
Mode is provided with the unit, is used for selecting to adopt whole encryptions or agreement cipher mode for the user;
Judging unit is set, be used for after receiving renewal short message file, the Set For Current that the unit is set according to mode judges whether the current receiver formula all encrypts, if, encrypt and memory cell not having to deliver to behind the short message affix protocol information of protocol information, the short message that will have a protocol information is directly delivered to and is encrypted and memory cell; If not, short message is delivered to the agreement judging unit.
9, as claim 6,7 or 8 described SIM card, it is characterized in that: when described encryption and memory cell are encrypted short message, do not comprise protocol information; Described ciphertext judging unit judges according to whether having protocol information in the short message whether this short message is the short message of ciphertext form.
10, as claim 6,7 or 8 described SIM card, it is characterized in that: described read module also comprises a unloading unit and a transient area, described unloading unit is used for when the user selects the short message unloading that shows, the clear content of this short message is dumped to described transient area, described transient area is provided with access key, the user must just can read the short message in this transient area by behind the correct access key of STK menu input.
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| CN 200310103507 CN1285227C (en) | 2003-11-05 | 2003-11-05 | Short message security method and SIM card for implementing short message security |
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| CN101262669B (en) * | 2004-06-23 | 2011-07-20 | 华为技术有限公司 | A secure guarantee method for information stored in a mobile terminal |
| CN100377613C (en) * | 2005-06-01 | 2008-03-26 | 海信集团有限公司 | Encryption method for short message of mobile telephone |
| CN100450208C (en) * | 2005-11-03 | 2009-01-07 | 华为技术有限公司 | Short message encryption protection realizing method and system |
| CN101330685B (en) * | 2008-05-19 | 2014-02-19 | 国民技术股份有限公司 | Method for ciphering and transmitting short message |
| CN101795315A (en) * | 2009-12-25 | 2010-08-04 | 深圳市杰普林数码科技有限公司 | System and method for encrypting short messages by using mobile phone terminal |
| CN102170616A (en) * | 2011-04-06 | 2011-08-31 | 深圳桑菲消费通信有限公司 | Method for carrying out encrypting protection on mobile phone information |
| CN106162622A (en) * | 2015-04-09 | 2016-11-23 | 中兴通讯股份有限公司 | A kind of method realizing data process and terminal |
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2003
- 2003-11-05 CN CN 200310103507 patent/CN1285227C/en not_active Expired - Lifetime
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| Publication number | Publication date |
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| CN1543234A (en) | 2004-11-03 |
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Granted publication date: 20061115 |