CN101150398A - A method, system and communication terminal for updating communication secret key - Google Patents
A method, system and communication terminal for updating communication secret key Download PDFInfo
- Publication number
- CN101150398A CN101150398A CNA2007101241560A CN200710124156A CN101150398A CN 101150398 A CN101150398 A CN 101150398A CN A2007101241560 A CNA2007101241560 A CN A2007101241560A CN 200710124156 A CN200710124156 A CN 200710124156A CN 101150398 A CN101150398 A CN 101150398A
- Authority
- CN
- China
- Prior art keywords
- character string
- communication
- key
- new
- opposite end
- Prior art date
- 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.)
- Pending
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
This invention provides a method, a system and a communication terminal for updating communication ciphered keys, in which, the method includes: obtaining a character string shared with the opposite end, when receiving an instruction of updating a ciphered key, it takes data conventioned with the opposite end and said shared character string as a parameter to generate a new character string and updates the ciphered key communicating with the opposite end to said new character string so as to realize updating communication ciphered keys so as to increase safety of communication.
Description
Technical field
The invention belongs to communication field, relate in particular to a kind of method, system and communication terminal that upgrades communication key.
Background technology
Along with the development of mechanics of communication, the communication between the various communication apparatus, for example the communication between mobile phone and the computer is more and more frequent.
In the process of communication, may relate to some secret contents.Like this, just need to guarantee the fail safe of communication between the communication apparatus.Usually, the method that guarantees communication security is to set a character string as communication key, utilizes this communication key that Content of communciation is encrypted.At present, when needs upgrade communication key, produce new communication key, by this communication terminal communication key is sent to other communication terminal again by a communication terminal.Because send in the communication key process, there is the risk that is decrypted in communication key, thereby constituted great threat for the fail safe of communication.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of method of more new key, when being intended to solve existing communication system communication key being upgraded, produce new communication key by a communication terminal, and communication key sent to other communication terminal, thereby the probability that causes communication key to be decrypted increases, thereby has caused the communication problem of safety inadequately.
The embodiment of the invention is achieved in that a kind of method of upgrading communication key, said method comprising the steps of:
Obtain the character string of sharing with the communication opposite end;
When receiving more new key instruction, will generate new character string as parameter with the data and the described shared character string of opposite end agreement;
To be described new character string with key updating to end communication.
Another purpose of the embodiment of the invention is to provide a kind of system that upgrades communication key, and described system comprises:
The character string acquiring unit is used to obtain the character string of sharing with the communication opposite end;
The character string generation unit is used for when receiving more new key instruction, will generate new character string as parameter with the data and the described shared character string of opposite end agreement; And
Updating block, be used for with key updating to end communication be described new character string.
Another purpose of the embodiment of the invention is to provide a kind of communication terminal, and described communication terminal comprises that one upgrades the system of communication key, and described system comprises:
The character string acquiring unit is used to obtain the character string of sharing with the communication opposite end;
The character string generation unit is used for when receiving more new key instruction, will generate new character string as parameter with the data and the described shared character string of opposite end agreement; And
Updating block, be used for with key updating to end communication be described new character string.
In an embodiment of the present invention, obtain identical character string by communication two party earlier, when receiving more new key instruction, data and this character string of sharing that the opposite end is arranged generate new character string as parameter.Like this, just can realize renewal, thereby increase the fail safe of communication communication key.
Description of drawings
Fig. 1 is the method implementing procedure figure of the renewal communication key that provides of the embodiment of the invention;
Fig. 2 is the structural representation of the system of the renewal communication key that provides of the embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
In an embodiment of the present invention, obtain identical character string by communication two party earlier, when receiving more new key instruction, data and described shared character string that the opposite end is arranged generate new character string as parameter.Like this, just can realize renewal, thereby increase the fail safe of communication communication key.
In an embodiment of the present invention, communication terminal can be for more than 2 or 2.Because the communication between the communication terminal more than 2 is equivalent to the communication between a plurality of two communication terminals, and communication modes is similar between per two communication terminals, at this, is that example describes with the communication between two communication terminals.
Fig. 1 shows the implementing procedure of the renewal communication key that the embodiment of the invention provides, and details are as follows:
In step S101, obtain the character string of sharing with the communication opposite end.
As embodiments of the invention, obtain a character string by any one communication terminal in two communication terminals, and this communication terminal sends to another communication terminal with this character string.Certainly, also can before communication, two communication terminals be linked to each other, when a communication terminal has obtained character string, just this character string can be transferred to another communication terminal by data wire with data wire.Like this, just realized sharing between character string and the communication opposite end.
The mode that communication terminal obtains character string can also can manually be provided with by the user for obtaining automatically.Automatically the mode of obtaining can for example, can utilize random number generation function to generate random number for producing a character string, and this random number is character string; Perhaps, extract all or part of as character string of the data of storing in the communication terminal, for example, the startup password that extracts this communication terminal storage is as character string.When the user manually is provided with, can be according to personal like's input of character string.
In step S102, judge whether to need to upgrade communication key.
When needs upgrade communication key, execution in step S103, otherwise finish whole flow process.
As embodiments of the invention, the user can import as required one update time period T
0At this moment, can be that 0 timer comes timing with an initial value, every a update cycle, promptly the time when timer is T
0Integral multiple the time, T for example
0, 2T
0, 3T
0..., then needing to upgrade communication key, output is more new key instruction once.Certainly, the user also can be by the input unit of communication terminal, keyboard for example, and touch-screens etc. are imported more new key instruction.
In step S103, will generate new character string as parameter with data and this character string of sharing of opposite end agreement.
When needs upgrade communication key, when promptly receiving more new key instruction, with this character string of sharing, and with the data of opposite end agreement as parameter, generate new character string.As embodiments of the invention, can utilize the key generating function to generate new character string.
Before the communication, two communication terminals all need to store the data of arranging with the opposite end.Because the data with the opposite end agreement as one of parameter that generates new character string have only communication two party just to understand, like this, this new character string just has only communication two party just may know.
As embodiments of the invention, the data of arranging with the opposite end can be several orderly character strings, when needing to upgrade communication key each time, take out character string in order.For example, when generating communication key for the first time, use first character string; When upgrading communication key for the second time, use second character string; ...; Upgrade communication key, use n character string for the n time.Certainly, these orderly character strings can be user's private data, for example user's cell-phone number, Mobile PIN, IMSI number, identification card number, computer cipher, perhaps its combination etc.
In step S104, will be this new character string with key updating to end communication.
Like this, just can utilize the communication key after the renewal to come the Content of communciation between the communication terminal is encrypted.
Fig. 2 shows the structure of the system of the renewal communication key that the embodiment of the invention provides, and the system of this renewal communication key can be the unit that is built in software unit, hardware cell or software and hardware combining in the communication terminal.This communication terminal can be mobile phone, PDA equipment, portable set, embedded device, portable terminals such as portable electronic device, perhaps computer.
This system comprises character string acquiring unit 21, character string generation unit 23 and updating block 24.Character string acquiring unit 21 obtains the character string of sharing with the communication opposite end.When receiving more the new key instruction, character string generation unit 23 will generate new character string as parameter with data and this character string of sharing of opposite end agreement, and will be this new character string with the key updating to end communication by updating block 24.Like this, utilize renewal back communication key just can encrypt to the Content of communciation between the communication terminal.
As embodiments of the invention, more also comprise a judging unit 22 in the system of new key at this, it is between character string acquiring unit 21 and character string generation unit 23.After obtaining the character string of sharing with the communication opposite end at character string acquiring unit 21, this judging unit 22 judges whether more new key.Wherein, judging unit 22 comprises that again cycle update time receiver module 221 reaches more new key instruction output module 222.Cycle update time receiver module 221 receives cycle update time of user's input, and every a update cycle, then explanation needs more new key, more once more new key instruction of new key instruction output module 222 outputs.
In an embodiment of the present invention, obtain identical character string by communication two party earlier, when receiving more new key instruction, data and described shared character string that the opposite end is arranged generate new character string as parameter.Like this, just can realize renewal, thereby increase the fail safe of communication communication key.By receiving cycle update time of user's input, every a update cycle, output once more new key instruct communication key upgraded, thereby realized automatically renewal to communication key.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a method of upgrading communication key is characterized in that, said method comprising the steps of:
Obtain the character string of sharing with the communication opposite end;
When receiving more new key instruction, will generate new character string as parameter with the data and the described shared character string of opposite end agreement;
To be described new character string with key updating to end communication.
2. the method for claim 1 is characterized in that, and is described when receiving more new key instruction, will also comprise before as the step that parameter generates new character string with the data and the described shared character string of opposite end agreement:
Judge whether to need to upgrade communication key.
3. method as claimed in claim 2 is characterized in that, the described step that needs to upgrade communication key that judges whether is specially:
Receive cycle update time of user's input;
Every cycle update time, output is more new key instruction once.
4. the method for claim 1 is characterized in that, described data with the opposite end agreement are a plurality of orderly character strings.
5. a system that upgrades communication key is characterized in that, described system comprises:
The character string acquiring unit is used to obtain the character string of sharing with the communication opposite end;
The character string generation unit is used for when receiving more new key instruction, will generate new character string as parameter with the data and the described shared character string of opposite end agreement; And
Updating block, be used for with key updating to end communication be described new character string.
6. the system of renewal communication key as claimed in claim 5 is characterized in that, described system also comprises:
Judging unit is used to judge whether that needs upgrade communication key.
7. the system of renewal communication key as claimed in claim 6 is characterized in that, described judging unit comprises:
Cycle update time receiver module is used to receive cycle update time that the user imports; And
More new key instruction output module was used for every a update cycle, and output is more new key instruction once.
8. a communication terminal is characterized in that, described communication terminal comprises that one upgrades the system of communication key, and described system comprises:
The character string acquiring unit is used to obtain the character string of sharing with the communication opposite end;
The character string generation unit is used for when receiving more new key instruction, will generate new character string as parameter with the data and the described shared character string of opposite end agreement; And
Updating block, be used for with key updating to end communication be described new character string.
9. communication terminal as claimed in claim 8 is characterized in that, described communication terminal is portable terminal or computer.
10. communication terminal as claimed in claim 9 is characterized in that, described portable terminal is mobile phone, PDA equipment, portable set, embedded device, and portable electronic device in a kind of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101241560A CN101150398A (en) | 2007-10-26 | 2007-10-26 | A method, system and communication terminal for updating communication secret key |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101241560A CN101150398A (en) | 2007-10-26 | 2007-10-26 | A method, system and communication terminal for updating communication secret key |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101150398A true CN101150398A (en) | 2008-03-26 |
Family
ID=39250754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101241560A Pending CN101150398A (en) | 2007-10-26 | 2007-10-26 | A method, system and communication terminal for updating communication secret key |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101150398A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101635711B (en) * | 2009-08-14 | 2012-06-06 | 广东省环境监测中心 | Programmable character communication method |
| CN104751539A (en) * | 2013-12-27 | 2015-07-01 | 中国移动通信集团公司 | Keyless entry system certification method, device and keyless entry certification system |
| CN107688729A (en) * | 2017-07-27 | 2018-02-13 | 大唐高鸿信安（浙江）信息科技有限公司 | Protection system of application program and method based on trusted host |
-
2007
- 2007-10-26 CN CNA2007101241560A patent/CN101150398A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101635711B (en) * | 2009-08-14 | 2012-06-06 | 广东省环境监测中心 | Programmable character communication method |
| CN104751539A (en) * | 2013-12-27 | 2015-07-01 | 中国移动通信集团公司 | Keyless entry system certification method, device and keyless entry certification system |
| CN107688729A (en) * | 2017-07-27 | 2018-02-13 | 大唐高鸿信安（浙江）信息科技有限公司 | Protection system of application program and method based on trusted host |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105915502B (en) | The method and system being added conducive to network | |
| CN106375287B (en) | Charging method of new energy automobile | |
| EP2689598B1 (en) | Interrogating an authentication device | |
| CN1323538C (en) | A dynamic identity certification method and system | |
| CN101605325B (en) | Method for identity authentication, mobile terminal, server, and identity authentication system | |
| EP1673898A1 (en) | Data communication security arrangement and method | |
| CN105337729B (en) | A kind of encryption method of mobile terminal, device and mobile terminal | |
| CN102307193A (en) | Key updating and synchronizing method, system and device for dynamic token | |
| CN104011730A (en) | Security mechanism for external code | |
| CN101277182A (en) | Method for acquiring dynamic password based on public key architecture-user personal identification card | |
| CN106096424A (en) | One is encrypted method and terminal to local data | |
| CN101964789A (en) | Method and system for safely accessing protected resources | |
| US20030156721A1 (en) | Method and system for encryption and authentication | |
| CN106355106A (en) | Account information storing method and system | |
| CN105631298B (en) | A kind of ciphering and deciphering device and method | |
| CN113593085A (en) | Door lock temporary password generation method, system, equipment and storage medium | |
| CN109495263A (en) | Clock synchronizing method, system, device, intelligent terminal, vehicle termination and medium | |
| CN101895538B (en) | Method and system for establishing data exchange channels, smart card and server | |
| CN107733936B (en) | Encryption method for mobile data | |
| CN102677987A (en) | Control device of intelligent electronic password lock, control method thereof and management system thereof | |
| CN102122342B (en) | Mobile phone password inputting method and mobile phone using same | |
| CN101150398A (en) | A method, system and communication terminal for updating communication secret key | |
| CN100592317C (en) | Peripheral apparatus and method for verifying authority thereof | |
| CN103152724A (en) | Method and system for locking SIM (subscriber identity module) card by utilizing hardware | |
| CN101621795A (en) | Method, system and device for realizing private ownership of wireless data terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20080326 |