CN103595844A - Processing method and device for dual-tone multi-frequency number - Google Patents
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Abstract
The invention discloses a processing method and device for a dual-tone multi-frequency number. The processing method for the dual-tone multi-frequency number comprises the following steps of (a) receiving the dual-tone multi-frequency number input by a user, (b) converting the dual-tone multi-frequency number input by the user into an encrypted dual-tone multi-frequency number according to preset encryption rules, and (c) outputting the encrypted dual-tone multi-frequency number. According to the processing method for the dual-tone multi-frequency number, the input dual-tone multi-frequency number is firstly encrypted before being output, and then the encrypted dual-tone multi-frequency number is output. At the moment, even though an eavesdropper hears the dial tone, the eavesdropper can only carry out reverse crack to obtain the encrypted dual-tone multi-frequency number and can not obtain the true dual-tone multi-frequency number input by the user, and therefore the eavesdropper can not obtain the information of the user, and the safety of the information of the user is improved.
Description
Technical field
The present invention relates to communication technical field, especially relate to a kind of processing method and device of dual-tone multifrequency number.
Background technology
Dual-tone multifrequency (DTMF, Dual Tone Multi Frequency) signal is widely used in the communications field, is a kind of subscriber signaling between communication terminal and switch in communication system, sends called number while being generally used for calling.Along with developing rapidly of the communication technology, communication terminal, also for phone payment system and telephone bank system, also can send user profile by touch-tone signal in communication process, as account number, password, authentication information etc.Therefore, the fail safe of touch-tone signal becomes the problem becoming increasingly conspicuous.
In view of this, the transmission to touch-tone signal in prior art is encrypted, thereby has effectively prevented touch-tone signal to be stolen in transmitting procedure and caused the leakage of user profile, the fail safe that has solved touch-tone signal transmitting procedure.
Yet touch-tone signal is comprised of high frequency group and low frequency group, a high-frequency signal and a low frequency signal stack form a composite signal, represent a dual-tone multifrequency number.Therefore,, when user dials input dual-tone multifrequency number by communication terminal, communication terminal can, by output unit outputting dual tone multi-frequency numbers such as loudspeaker, send dialing tone.If there is listener-in to hear described dialing tone, can crack out equally the corresponding dual-tone multifrequency number of touch-tone signal, thus the user profile of obtaining.
Summary of the invention
Main purpose of the present invention is to provide a kind of processing method and device of dual-tone multifrequency number, is intended to prevent that listener-in from cracking dual-tone multifrequency number by dialing tone, improves the fail safe of user profile.
To achieve these objectives, the present invention proposes a kind of processing method of dual-tone multifrequency number, comprises step:
The dual-tone multifrequency number of a, reception user input;
B, the dual-tone multifrequency number of described user being inputted according to default encryption rule are converted to encryption dual-tone multifrequency number;
C, export described encryption dual-tone multifrequency number.
Preferably, after described step a, comprise:
Judge whether to open the encryption function of the dual-tone multifrequency number of knowing clearly;
If so, enter step b;
If not, play the dual-tone multifrequency number of described user's input.
Preferably, described step b comprises:
Described encryption rule comprises encryption mapping table, according to described encryption mapping table, the dual-tone multifrequency number of described user's input is mapped as to new dual-tone multifrequency number, and described new dual-tone multifrequency number is encryption dual-tone multifrequency number.
Preferably, described step b comprises:
Described encryption rule comprises digit mapping table and cryptographic algorithm, according to described digit mapping table, the dual-tone multifrequency number of described user's input is mapped as to digital code;
According to described cryptographic algorithm, described digital code is converted to new digital code;
According to described digit mapping table, described new digital code is mapped as to new dual-tone multifrequency number, described new dual-tone multifrequency number is encryption dual-tone multifrequency number.
Preferably, the integer that the digital code in described digit mapping table is 0-15, described cryptographic algorithm is formula k=(i+r) %n; Wherein, described k is new digital code, and described i is the digital code corresponding to dual-tone multifrequency number of described user's input, and described r is random integers, and described % represents complementation, n=16.
The present invention proposes a kind of processing unit of dual-tone multifrequency number simultaneously, comprises receiving element, ciphering unit and output unit, wherein:
Receiving element, for receiving the dual-tone multifrequency number of user's input;
Ciphering unit, for being converted to encryption dual-tone multifrequency number according to default encryption rule by the dual-tone multifrequency number of described user's input;
Output unit, for exporting described encryption dual-tone multifrequency number.
Preferably, also comprise encryption switch element, described receiving element is used for:
Judge that whether described encryption switch element is in opening;
If so, send to described ciphering unit to be encrypted the dual-tone multifrequency number of described user's input;
If not, directly send to described output unit to export the dual-tone multifrequency number of described user's input.
Preferably, described encryption rule comprises encrypting opens sign, and described ciphering unit is used for:
Judge that whether described encryption unlatching sign is in opening;
If so, the dual-tone multifrequency number of described user's input of receiving is encrypted;
If not, directly send to described output unit to export the dual-tone multifrequency number of described user's input of receiving.
Preferably, described encryption rule comprises encryption mapping table, and described ciphering unit is used for:
According to described encryption mapping table, the dual-tone multifrequency number of described user's input is mapped as to new dual-tone multifrequency number, described new dual-tone multifrequency number is encryption dual-tone multifrequency number.
Preferably, described encryption rule comprises digit mapping table and cryptographic algorithm, and described ciphering unit is used for:
According to described digit mapping table, the dual-tone multifrequency number of described user's input is mapped as to digital code;
According to described cryptographic algorithm, described digital code is converted to new digital code;
According to described digit mapping table, described new digital code is mapped as to new dual-tone multifrequency number, described new dual-tone multifrequency number is encryption dual-tone multifrequency number.
The processing method of a kind of dual-tone multifrequency number provided by the present invention, before the dual-tone multifrequency number receiving is exported, is first encrypted operation to the dual-tone multifrequency number of input, and then the dual-tone multifrequency number after output encryption.Now, even if listener-in has heard dialing tone, also can only reverse engineered obtain encrypting dual-tone multifrequency number, and cannot obtain the real dual-tone multifrequency number of user's input, therefore can not get accordingly user profile, improve the fail safe of user profile.
Accompanying drawing explanation
Fig. 1 is the flow chart of processing method first embodiment of dual-tone multifrequency number of the present invention;
Fig. 2 is the particular flow sheet of step S120 in Fig. 1;
Fig. 3 is digit mapping table one example in the present invention;
Fig. 4 is encryption mapping table one example in the present invention;
Fig. 5 is the flow chart of processing method second embodiment of dual-tone multifrequency number of the present invention;
Fig. 6 is the structured flowchart of processing unit first embodiment of dual-tone multifrequency number of the present invention;
Fig. 7 is the structured flowchart of processing unit second embodiment of dual-tone multifrequency number of the present invention.
The realization of the object of the invention, functional characteristics and advantage, in connection with embodiment, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Referring to Fig. 1, Fig. 2, processing method first embodiment of dual-tone multifrequency number of the present invention is proposed, the processing method of described dual-tone multifrequency number comprises the following steps:
The dual-tone multifrequency number of step S110, reception user input
User by dialing numeral or symbol is inputted dual-tone multifrequency number on the dialing keyboard of communication terminal, and described communication terminal comprises mobile phone, landline telephone etc.Can be to input called number before connecting phone, or in communication process, input account number, the user profile such as password.Communication terminal receives the dual-tone multifrequency number of user's input at any time.
Step S120, the dual-tone multifrequency number of user being inputted according to default encryption rule are converted to encryption dual-tone multifrequency number
Dual-tone multifrequency number has 16, is respectively (0,1,2,3,4,5,6,7,8,9, A, B, C, D, *, #).Each dual-tone multifrequency number represents the sinusoidal signal combination of a high and low frequency, as: 1 represents the combination of 697 and 1209 hertz, and 3 represent the combination of 697 and 1477 hertz, and 4 represent the combination of 770 and 1209 hertz.Therefore, each dual-tone multifrequency number represents a touch-tone signal, sends different tones, sends different dialing tones when user dials jack per station.In order to prevent that listener-in from cracking dual-tone multifrequency number by dialing tone, the present invention is encrypted the dual-tone multifrequency number of user's input according to default encryption rule, is converted to encryption dual-tone multifrequency number.Ciphering process concrete steps are as follows:
Step S121, the dual-tone multifrequency number of user being inputted according to digit mapping table are mapped as digital code
Dual-tone multifrequency number, except 10 numerals, also has 4 letters and 2 symbols, and this step S121 is converted to digital code by all dual-tone multifrequency numbers.Described encryption rule comprises digit mapping table and cryptographic algorithm.An instantiation of described digit mapping table as shown in Figure 3,16 dual-tone multifrequency numbers and (0～15) digital code that totally 16 integers form is corresponding one by one, (0～9) in figure in dual-tone multifrequency number is corresponding one by one with (0～9) in digital code, (A～D) in dual-tone multifrequency number is corresponding one by one with (10～13) in digital code, and (* and the #) in dual-tone multifrequency number is corresponding one by one with (14 and 15) in digital code.For example, if dual-tone multifrequency number is *, be mapped as digital code 14; Dual-tone multifrequency number is 8, is mapped as 8.Certainly, the dual-tone multifrequency number in digit mapping table also can be set up other one-to-one relationships with digital code.
Step S122, according to cryptographic algorithm, digital code is converted to new digital code
New digital code after conversion is other digital codes in digital code combination.Described cryptographic algorithm is preferably formula k=(i+r) %n, and wherein, k is new digital code, i is the digital code corresponding to dual-tone multifrequency number of user's input, and r is random integers, and % represents complementation, if the integer that the digital code in digit mapping table is 0-15, n gets 16.Suppose that r gets 5, according to cryptographic algorithm k=(i+r) %n, the digital code (0,1,2,3,4,5,6,7,8 corresponding to dual-tone multifrequency number of user's input, 9,10,11,12,13,14,15) being converted to after new digital code is (5,6,7,8,9,10,11,12,13,14,15,0,1,2,3,4).That is, digital code 0 is converted to 5,15 and is converted to 4, etc.
Step S123, according to digit mapping table, new digital code is mapped as to new dual-tone multifrequency number
Thereby the dual-tone multifrequency number of user's input is converted into new dual-tone multifrequency number by default encryption rule, described new dual-tone multifrequency number is encryption dual-tone multifrequency number.For example, the dual-tone multifrequency number of user input be encoded to 3, according to the digit mapping table shown in Fig. 3, obtain digital code 3, according to cryptographic algorithm, being converted to new digital code is 8, according to digit mapping table, obtain new dual-tone multifrequency number 8 again, dual-tone multifrequency number 8 is encryption dual-tone multifrequency number.
In certain embodiments, ciphering process can also be as follows:
Described encryption rule comprises encryption mapping table, this encryption mapping table comprises 16 original codings and 16 scrambleds, both are corresponding one by one, each scrambled is all not identical with corresponding original coding, thereby by each dual-tone multifrequency number unique be mapped as another dual-tone multifrequency number, according to described encryption mapping table, the dual-tone multifrequency number of user's input is mapped as to new dual-tone multifrequency number, described new dual-tone multifrequency number is encryption dual-tone multifrequency number.An instantiation of encrypting mapping table as shown in Figure 4, suppose that the dual-tone multifrequency number that user inputs is original coding 0, and its corresponding scrambled is 3,3 to encrypt dual-tone multifrequency number, has realized equally the encryption of dual-tone multifrequency number.
Dual-tone multifrequency number is encrypted in step S130, output
Communication terminal is encrypted dual-tone multifrequency number by output unit outputs such as loudspeaker, microphone, earphones, plays dialing tone.Now, even if listener-in has heard dialing tone, also can only reverse engineered obtain encrypting dual-tone multifrequency number, and cannot obtain the dual-tone multifrequency number of user's input, therefore can not get accordingly user profile, improve the fail safe of user profile.
Referring to Fig. 5, processing method second embodiment of dual-tone multifrequency number of the present invention is proposed, the processing method of described dual-tone multifrequency number comprises the following steps:
The dual-tone multifrequency number of step S210, reception user input
Step S220, judged whether to open the encryption function of dual-tone multifrequency number
User can as required, open or close the encryption function of dual-tone multifrequency number.If communication terminal judges that user has opened encryption function, enter step S240; If judge, user has closed encryption function, enters step S230.
The dual-tone multifrequency number of step S230, input user input
If user has closed encryption function, dual-tone multifrequency number is not encrypted, directly export the dual-tone multifrequency number of user's input.
Step S240, the dual-tone multifrequency number of user being inputted according to default encryption rule are converted to encryption dual-tone multifrequency number
If user has opened encryption function, dual-tone multifrequency number is encrypted.Concrete encryption flow is identical with the first embodiment, does not repeat them here.
Dual-tone multifrequency number is encrypted in step S250, output
Accordingly, the processing method of dual-tone multifrequency number of the present invention, before the dual-tone multifrequency number receiving is exported, is first encrypted operation to the dual-tone multifrequency number of input, and then the dual-tone multifrequency number after output encryption.Now, even if listener-in has heard dialing tone, also can only reverse engineered obtain encrypting dual-tone multifrequency number, and cannot obtain the real dual-tone multifrequency number of user's input, therefore can not get accordingly user profile, improve the fail safe of user profile.
Referring to Fig. 6, processing unit first embodiment of dual-tone multifrequency number of the present invention is proposed, the processing unit of described dual-tone multifrequency number can be the communication terminals such as landline telephone, mobile phone, comprises receiving element 110, ciphering unit 120 and output unit 130, wherein:
Receiving element 110, for receiving the dual-tone multifrequency number of user's input, and sends to ciphering unit 120 to be encrypted operation.User can or input dual-tone multifrequency number by dialing keyboard in communication process before connecting phone.
Ciphering unit 120, for according to default encryption rule, the dual-tone multifrequency number of user's input being converted to encryption dual-tone multifrequency number, and sends to output unit 130 by encryption dual-tone multifrequency number.Described encryption rule is stored in ciphering unit 120, and this encryption rule comprises digit mapping table and cryptographic algorithm.First ciphering unit 120 is mapped as digital code according to digit mapping table by the dual-tone multifrequency number of user's input, then according to cryptographic algorithm, digital code is converted to new digital code, finally according to digit mapping table, new digital code is mapped as to new dual-tone multifrequency number, described new dual-tone multifrequency number is encryption dual-tone multifrequency number.
An instantiation of described digit mapping table as shown in Figure 3,16 dual-tone multifrequency numbers and (0～15) digital code that totally 16 integers form is corresponding one by one, (0～9) in figure in dual-tone multifrequency number is corresponding one by one with (0～9) in digital code, (A～B) in dual-tone multifrequency number is corresponding one by one with (10～13) in digital code, and (* and the #) in dual-tone multifrequency number is corresponding one by one with (14 and 15) in digital code.For example, if dual-tone multifrequency number is *, be mapped as digital code 14; Dual-tone multifrequency number is 8, is mapped as 8.Certainly, the dual-tone multifrequency number in digit mapping table also can be set up other one-to-one relationships with digital code.Described cryptographic algorithm is preferably formula k=(i+r) %n, and wherein, k is new digital code, i is the digital code corresponding to dual-tone multifrequency number of user's input, and r is random integers, and % represents complementation, if the integer that the digital code in digit mapping table is 0-15, n gets 16.Suppose that r gets 5, according to cryptographic algorithm k=(i+r) %n, the digital code (0,1,2,3,4,5,6,7,8 corresponding to dual-tone multifrequency number of user's input, 9,10,11,12,13,14,15) being converted to after new digital code is (5,6,7,8,9,10,11,12,13,14,15,0,1,2,3,4).That is, digital code 0 is converted to 5,15 and is converted to 4, etc.
In certain embodiments, in ciphering unit 120, the encryption rule of storage comprises encryption mapping table, this encryption mapping table comprises 16 original codings and 16 scrambleds, both are corresponding one by one, each scrambled is all not identical with corresponding original coding, thereby by each dual-tone multifrequency number unique be mapped as another dual-tone multifrequency number, be that ciphering unit 120 is mapped as new dual-tone multifrequency number according to described encryption mapping table by the dual-tone multifrequency number of user's input, described new dual-tone multifrequency number is encryption dual-tone multifrequency number.An instantiation of encrypting mapping table as shown in Figure 4, suppose that the dual-tone multifrequency number that user inputs is original coding 0, and its corresponding scrambled is 3,3 to encrypt dual-tone multifrequency number, has realized equally the encryption of dual-tone multifrequency number.
Further, user can also open or close the encryption function of dual-tone multifrequency number as required.In the present embodiment, also comprise an encryption unlatching sign in the encryption rule of ciphering unit 120 storages, user can open as required or close described encryption and open sign.Ciphering unit 120 judges that whether described encryption unlatching sign is in opening; If judge, encrypt and open sign in opening, the dual-tone multifrequency number of user's input of receiving is encrypted; If judge, open sign in closed condition, the dual-tone multifrequency number of receiving is not encrypted to operation, but directly the dual-tone multifrequency number of user's input of receiving being sent to output unit 130, output unit 130 is directly exported the dual-tone multifrequency number of user's input.
In processing unit second embodiment of dual-tone multifrequency number as shown in Figure 7, the processing unit of described dual-tone multifrequency number also comprises an encryption switch element 140, and user can be opened or be closed the encryption function of dual-tone multifrequency number as required by this encryption switch element 140 of switch.Whether receiving element 110 judgements encrypt switch element 140 in opening; If judge, encrypt switch element 140 in opening, the dual-tone multifrequency number of user's input is sent to ciphering unit 120, ciphering unit 120 sends to output unit 130 after being encrypted operation, by output unit 130 outputs, encrypts dual-tone multifrequency number; If judge, encrypt switch element 140 in closed condition, dual-tone multifrequency number is not sent to ciphering unit 120 to encrypt, but the dual-tone multifrequency number of user's input is directly sent to output unit 130, by output unit 130, directly exported the dual-tone multifrequency number of user's input.
Accordingly, the processing unit of dual-tone multifrequency number of the present invention, receiving element 110, after receiving the dual-tone multifrequency number of user's input, first sends to ciphering unit 120 to be encrypted operation the dual-tone multifrequency number of input, then the dual-tone multifrequency number after being encrypted by output unit 130 outputs.Now, even if listener-in has heard dialing tone, also can only reverse engineered obtain encrypting dual-tone multifrequency number, and cannot obtain the real dual-tone multifrequency number of user's input, therefore can not get accordingly user profile, improve the fail safe of user profile.
Should be understood that; these are only the preferred embodiments of the present invention; can not therefore limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes specification of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a processing method for dual-tone multifrequency number, is characterized in that, comprises step:
The dual-tone multifrequency number of a, reception user input;
B, the dual-tone multifrequency number of described user being inputted according to default encryption rule are converted to encryption dual-tone multifrequency number;
C, export described encryption dual-tone multifrequency number.
2. the processing method of dual-tone multifrequency number according to claim 1, is characterized in that, after described step a, comprises:
Judged whether to open the encryption function of dual-tone multifrequency number;
If so, enter step b;
If not, export the dual-tone multifrequency number of described user's input.
3. the processing method of dual-tone multifrequency number according to claim 1 and 2, is characterized in that, described step b comprises:
Described encryption rule comprises encryption mapping table, according to described encryption mapping table, the dual-tone multifrequency number of described user's input is mapped as to new dual-tone multifrequency number, and described new dual-tone multifrequency number is encryption dual-tone multifrequency number.
4. the processing method of dual-tone multifrequency number according to claim 1 and 2, is characterized in that, described step b comprises:
Described encryption rule comprises digit mapping table and cryptographic algorithm, according to described digit mapping table, the dual-tone multifrequency number of described user's input is mapped as to digital code;
According to described cryptographic algorithm, described digital code is converted to new digital code;
According to described digit mapping table, described new digital code is mapped as to new dual-tone multifrequency number, described new dual-tone multifrequency number is encryption dual-tone multifrequency number.
5. the processing method of dual-tone multifrequency number according to claim 4, is characterized in that, the integer that the digital code in described digit mapping table is 0-15, and described cryptographic algorithm is formula k=(i+r) %n; Wherein, described k is new digital code, and described i is the digital code corresponding to dual-tone multifrequency number of described user's input, and described r is random integers, and described % represents complementation, n=16.
6. a processing unit for dual-tone multifrequency number, is characterized in that, comprises receiving element, ciphering unit and output unit, wherein:
Receiving element, for receiving the dual-tone multifrequency number of user's input;
Ciphering unit, for being converted to encryption dual-tone multifrequency number according to default encryption rule by the dual-tone multifrequency number of described user's input;
Output unit, for exporting described encryption dual-tone multifrequency number.
7. the processing unit of dual-tone multifrequency number according to claim 6, is characterized in that, also comprises encryption switch element, and described receiving element is used for:
Judge that whether described encryption switch element is in opening;
If so, send to described ciphering unit to be encrypted the dual-tone multifrequency number of described user's input;
If not, directly send to described output unit to export the dual-tone multifrequency number of described user's input.
8. the processing unit of dual-tone multifrequency number according to claim 6, is characterized in that, described encryption rule comprises encrypting opens sign, and described ciphering unit is used for:
Judge that whether described encryption unlatching sign is in opening;
If so, the dual-tone multifrequency number of described user's input of receiving is encrypted;
If not, directly send to described output unit to export the dual-tone multifrequency number of described user's input of receiving.
9. according to the processing unit of the dual-tone multifrequency number described in claim 6-8 any one, it is characterized in that, described encryption rule comprises encryption mapping table, and described ciphering unit is used for:
According to described encryption mapping table, the dual-tone multifrequency number of described user's input is mapped as to new dual-tone multifrequency number, described new dual-tone multifrequency number is encryption dual-tone multifrequency number.
10. according to the processing unit of the dual-tone multifrequency number described in claim 6-8 any one, it is characterized in that, described encryption rule comprises digit mapping table and cryptographic algorithm, and described ciphering unit is used for:
According to described digit mapping table, the dual-tone multifrequency number of described user's input is mapped as to digital code;
According to described cryptographic algorithm, described digital code is converted to new digital code;
According to described digit mapping table, described new digital code is mapped as to new dual-tone multifrequency number, described new dual-tone multifrequency number is encryption dual-tone multifrequency number.
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| CN106506787A (en) * | 2016-11-29 | 2017-03-15 | 深圳天珑无线科技有限公司 | A kind of method of number input protection and terminal |
| CN106713611A (en) * | 2016-11-17 | 2017-05-24 | 上海斐讯数据通信技术有限公司 | Mobile phone dial voice encryption system and encryption method |
| WO2017166420A1 (en) * | 2016-03-31 | 2017-10-05 | 宇龙计算机通信科技(深圳)有限公司 | Voice encryption method and voice transmission terminal |
| CN111967026A (en) * | 2020-07-22 | 2020-11-20 | 深圳市道旅旅游科技股份有限公司 | Method and device for encrypting and decrypting redemption code and computer equipment |
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