CN102571352A - Method and device for setting cryptographic key factors of dynamic tokens - Google Patents

Method and device for setting cryptographic key factors of dynamic tokens Download PDF

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Publication number
CN102571352A
CN102571352A CN201110456577XA CN201110456577A CN102571352A CN 102571352 A CN102571352 A CN 102571352A CN 201110456577X A CN201110456577X A CN 201110456577XA CN 201110456577 A CN201110456577 A CN 201110456577A CN 102571352 A CN102571352 A CN 102571352A
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brightness
color
intelligent key
color change
change information
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CN201110456577XA
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CN102571352B (en
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陈柳章
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Beijing Minghua Union Technology Co ltd
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Shenzhen Excelsecu Data Technology Co Ltd
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Abstract

The invention discloses a method and a device for setting cryptographic key factors of dynamic tokens, wherein the method comprises the following steps: receiving cryptographic key data outputted by a first intelligent cryptographic key device by a second intelligent cryptographic key device; and generating cryptographic key factors according to the cryptographic key data. By using the method and the device provided by the invention, the sealing of a dynamic token can be achieved without arranging an opening which is used for programming cryptographic key factors on a shell of the dynamic token.

Description

The method to set up of dynamic token cryptographic key factor and device
Technical field
The present invention relates to the data security technical field, relate in particular to a kind of method to set up and device of dynamic token cryptographic key factor.
Background technology
Along with The development in society and economy, people carry out that the demand of online transaction is more and more, and in order to protect the safety of online transaction account, people can select to buy dynamic token (disposal password device), replace traditional static password with the dynamic password of its generation.Dynamic token in the market, because need be when distribution through the mode of contact communication, the programming cryptographic key factor, so shell must leave opening, therefore can not water proof and dust proof.
Summary of the invention
Main purpose of the present invention is method to set up and the device that a kind of dynamic token cryptographic key factor is provided, and through this method cryptographic key factor is set, and need not to be provided with at shell the opening of programming cryptographic key factor, can accomplish the sealing of dynamic token.
The method to set up of a kind of dynamic token cryptographic key factor of the present invention comprises step:
Second intelligent key apparatus receives the key data of first intelligent key apparatus output;
Generate cryptographic key factor according to key data.
Preferably, said first intelligent key apparatus is a dynamic token, and second intelligent key apparatus is the dynamic token distribution device; Perhaps, said first intelligent key apparatus is the dynamic token distribution device, and second intelligent key apparatus is a dynamic token.
Preferably, said second intelligent key apparatus reception key data is specially: second intelligent key apparatus receives key data through brightness, brightness variation, color and/or the color change of the first intelligent key apparatus screen.
Preferably, said second intelligent key apparatus comprises through brightness, brightness variation, color and/or the color change reception key data of the first intelligent key apparatus screen: second intelligent key apparatus reads the displaying contents of first intelligent key apparatus output; Said displaying contents comprises brightness, brightness variation, color and/or the color change information that is generated by the key data modulation through first intelligent key apparatus;
The brightness, brightness variation, color and/or the color change information that comprise one or more first intelligent key apparatus on-screen display (osd) area when said displaying contents; And when displaying contents does not comprise brightness and/or color reference information; Said brightness, brightness variation, color and/or color change information are carried out demodulation, obtain key data;
The brightness, brightness variation, color and/or the color change information that comprise a plurality of first intelligent key apparatus on-screen display (osd) areas when said displaying contents; And when displaying contents comprises brightness and/or color reference information; Said brightness, brightness variation, color and/or color change information are calibrated the back demodulation, obtain key data.
Preferably; When said displaying contents comprises brightness, brightness variation, color and/or the color change information of a plurality of first intelligent key apparatus on-screen display (osd) areas; Said displaying contents also comprises brightness, brightness variation, color and/or color change information synchronization signal, is used to said brightness, brightness variation, color and/or color change information reference synchronization is provided.
Preferably, said second intelligent key apparatus reads said brightness, brightness variation, color and/or color change information through photo resistance, photodiode or phototriode.
Preferably, said second intelligent key apparatus receives the key data that first intelligent key apparatus sends and is specially: second intelligent key apparatus receives key data through infrared mode.
The present invention also provides a kind of setting device of dynamic token cryptographic key factor, comprising:
Receiver module is used to receive the key data that first intelligent key apparatus sends;
Generation module is used for generating cryptographic key factor according to said key data.
Preferably, the setting device of said dynamic token cryptographic key factor is a dynamic token, and first intelligent key apparatus is the dynamic token distribution device; Perhaps, said first intelligent key apparatus is a dynamic token, and the setting device of said dynamic token cryptographic key factor is the dynamic token distribution device.
Preferably, said receiver module specifically is used for: brightness, brightness variation, color and/or color change through the first intelligent key apparatus screen receive key data.
Preferably, said receiver module comprises:
Reading unit is used to read the displaying contents of first intelligent key apparatus output; Said displaying contents comprises brightness, brightness variation, color and/or the color change information that is generated by the key data modulation through first intelligent key apparatus;
Demodulating unit; Be used for comprising brightness, brightness variation, color and/or the color change information of one or more first intelligent key apparatus on-screen display (osd) area when said displaying contents; And when displaying contents does not comprise brightness and/or color reference information; Said brightness, brightness variation, color and/or color change information are carried out demodulation, obtain key data; And comprise brightness, brightness variation, color and/or the color change information of a plurality of first intelligent key apparatus on-screen display (osd) areas when said displaying contents; And when displaying contents comprises brightness and/or color reference information; Said brightness, brightness variation, color and/or color change information are calibrated the back demodulation, obtain key data.
Preferably; When said displaying contents comprises brightness, brightness variation, color and/or the color change information of a plurality of first intelligent key apparatus on-screen display (osd) areas; Said displaying contents also comprises brightness, brightness variation, color and/or color change information synchronization signal, is used to said brightness, brightness variation, color and/or color change information reference synchronization is provided.
Preferably, said reading unit reads said brightness, brightness variation, color and/or color change information through photo resistance, photodiode or phototriode.
Preferably, said receiver module specifically is used for: receive key data through infrared mode.
The method to set up of a kind of dynamic token cryptographic key factor of the present invention and device; Modulated through receiving first intelligent key apparatus output brightness of key data, brightness variation, color and/or color change information or infrared information; Receive the key data of first intelligent key apparatus output, generate cryptographic key factor according to key data afterwards.Adopt the set-up mode of this cryptographic key factor, need not on dynamic token, to be provided with the contact communication interface that the programming cryptographic key factor is used, the Seal Design that can accomplish dynamic token realizes water proof and dust proof.
Description of drawings
Fig. 1 is the schematic flow sheet of method to set up one embodiment of dynamic token cryptographic key factor of the present invention;
Fig. 2 is the schematic flow sheet of mode one among method to set up one embodiment of dynamic token cryptographic key factor of the present invention;
Fig. 3 is the structural representation of setting device one embodiment of dynamic token cryptographic key factor of the present invention;
Fig. 4 is the structural representation of receiver module in setting device one by way of example one of dynamic token cryptographic key factor of the present invention;
Fig. 5 is the structural representation of reading unit in setting device one by way of example one of dynamic token cryptographic key factor of the present invention.
The realization of the object of the invention, functional characteristics and advantage will combine embodiment, further specify with reference to accompanying drawing.
Embodiment
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 the embodiment of the invention, the dynamic token distribution device can be the dynamic token server, or can carry out data interaction with the dynamic token server and can generate the miscellaneous equipment of key data, like PC, portable terminal etc.
With reference to Fig. 1, method to set up one embodiment of dynamic token cryptographic key factor of the present invention is proposed, comprising:
Step S10, second intelligent key apparatus receive the key data of first intelligent key apparatus output;
In the present embodiment, second intelligent key apparatus can receive key data through following two modes:
Mode one, the second intelligent key apparatus receives key data through brightness, brightness variation, color and/or the color change of the first intelligent key apparatus screen, with reference to Fig. 2, comprises step:
Step S101, second intelligent key apparatus read the displaying contents of first intelligent key apparatus output; Said displaying contents comprises brightness, brightness variation, color and/or the color change information that is generated by the key data modulation through first intelligent key apparatus;
First intelligent key apparatus carries out cryptographic key factor when being provided with at needs; Can begin to show key data, show predetermined times or stop demonstration after the scheduled time until circulation with different brightness, brightness variation, color and/or color change (present embodiment is referred to as brightness, brightness variation, color and/or color change information with the information of brightness, brightness variation, color and/or the color change generation of the first intelligent key apparatus screen) circulation.The displaying contents of first intelligent key apparatus output this moment includes but are not limited to brightness, brightness variation, color and/or the color change information of the first intelligent key apparatus screen; This brightness, brightness variation, color and/or color change information are obtained by the key data modulation; The mode of modulation can be amplitude modulation(PAM) or phase modulated etc.; Said key data can be brightness, brightness variation, color and/or the color change information that generates with the display brightness of expressly directly modulating the first intelligent key apparatus screen; Brightness, brightness variation, color and/or color change information that the display brightness that also can use ciphertext after the encryption to modulate the first intelligent key apparatus screen generates, said encryption can be to carry out according to the key and the AES that prestore.Because the first intelligent key apparatus screen comprises a plurality of viewing areas, therefore the displaying contents of first intelligent key apparatus output can comprise brightness, brightness variation, color and/or the color change information of one or more viewing area.In practical application; Can aim at the zone that brightness on the first intelligent key apparatus screen, brightness variation, color and/or color change information show through the part that second intelligent key apparatus is provided with photo resistance, photodiode or phototriode; Respond to brightness, brightness variation, the color and/or the color change of the first intelligent key apparatus screen and read brightness, brightness variation, color and/or color change information; Be appreciated that said second intelligent key apparatus is provided with the shell employing printing opacity design of the part of photo resistance, photodiode or phototriode.
Step S102, comprise brightness, brightness variation, color and/or the color change information of one or more first intelligent key apparatus on-screen display (osd) area when said displaying contents; And when displaying contents does not comprise brightness and/or color reference information; Said brightness, brightness variation, color and/or color change information are carried out demodulation, obtain key data;
Step S103, comprise brightness, brightness variation, color and/or the color change information of a plurality of first intelligent key apparatus on-screen display (osd) areas when said displaying contents; And when displaying contents comprises brightness and/or color reference information; Said brightness, brightness variation, color and/or color change information are calibrated the back demodulation, obtain key data.
Said key data is used to generate cryptographic key factor, and this cryptographic key factor then can be used to generate dynamic password, supplies the user to carry out authentication.The generation of this key data can be the fixing use of disposable generation; Also can be repeatedly to generate, change and use.This key data can generate with random fashion.
Because the displaying contents of first intelligent key apparatus output can comprise brightness, brightness variation, color and/or the color change information of one or more viewing area.Therefore; The brightness, brightness variation, color and/or the color change information that comprise one or more viewing area when the displaying contents of first intelligent key apparatus output; And when displaying contents does not comprise brightness and/or color reference information; Directly this brightness, brightness variation, color and/or color change information are carried out demodulation, obtain corresponding key data.When the displaying contents of first intelligent key apparatus output comprises brightness, brightness variation, color and/or the color change information of two above viewing areas; Then the displaying contents of output can also comprise brightness and/or color reference information simultaneously; Through this brightness and/or color reference information brightness, brightness variation, color and/or the color change information of a plurality of viewing areas of reception are carried out brightness and/or color adjustment; Brightness after can obtaining calibrating, brightness variation, color and/or color change information; According to brightness, brightness variation, color and/or color change demodulates information after the calibration, obtain key data again.Further; The situation that comprises brightness, brightness variation, color and/or the color change information of two above viewing areas for the displaying contents of first intelligent key apparatus output; First intelligent key apparatus also can be exported brightness, brightness variation, color and/or color change information synchronization signal simultaneously, is used to said brightness, brightness variation, color and/or color change information reference synchronization is provided.
Mode two, the second intelligent key apparatus receive key data through infrared mode, and promptly second intelligent key apparatus is directly through reception key datas such as infrared transceivers.
Step S11, generate cryptographic key factor according to key data.
Second intelligent key apparatus can directly extract cryptographic key factor or calculate the generation cryptographic key factor according to the content of key data from the content of key data, this cryptographic key factor can be used to generate dynamic password.
Be appreciated that described first intelligent key apparatus of present embodiment is a dynamic token, second intelligent key apparatus is the dynamic token distribution device; Perhaps, said first intelligent key apparatus is the dynamic token distribution device, and second intelligent key apparatus is a dynamic token.That is, said key data can be to export to the dynamic token distribution device after being generated by dynamic token, also can be to export to dynamic token after the dynamic token distribution device generates.
The method to set up of the described dynamic token cryptographic key factor of present embodiment; Modulated through receiving first intelligent key apparatus output brightness of key data, brightness variation, color and/or color change information or infrared information; Receive the key data of first intelligent key apparatus output, generate cryptographic key factor according to key data afterwards.Adopt the set-up mode of this cryptographic key factor, need not on dynamic token, to be provided with the contact communication interface that the programming cryptographic key factor is used, the Seal Design that can accomplish dynamic token realizes water proof and dust proof.
With reference to Fig. 3, setting device one embodiment of dynamic token cryptographic key factor of the present invention is proposed, comprising:
Receiver module 10 is used to receive the key data that first intelligent key apparatus sends;
Generation module 20 is used for generating cryptographic key factor according to said key data.
In the present embodiment, receiver module 10 can receive key data through following two modes:
Mode one, receiver module 10 receives key data through brightness, brightness variation, color and/or the color change of the first intelligent key apparatus screen, and with reference to Fig. 4, shown in Figure 4 is the mode structure of receiver module 10 once, comprising:
Reading unit 11 is used to read the displaying contents of first intelligent key apparatus output; Said displaying contents comprises brightness, brightness variation, color and/or the color change information that is generated by the key data modulation through first intelligent key apparatus;
Demodulating unit 12; Be used for comprising brightness, brightness variation, color and/or the color change information of one or more first intelligent key apparatus on-screen display (osd) area when said displaying contents; And when displaying contents does not comprise brightness and/or color reference information; Said brightness, brightness variation, color and/or color change information are carried out demodulation, obtain key data; And comprise brightness, brightness variation, color and/or the color change information of a plurality of first intelligent key apparatus on-screen display (osd) areas when said displaying contents; And when displaying contents comprises brightness and/or color reference information; Said brightness, brightness variation, color and/or color change information are calibrated the back demodulation, obtain key data.
The setting device of the dynamic token cryptographic key factor of present embodiment can be dynamic token itself, also can be a device that is internal or external at dynamic token, or dynamic token distribution device itself, also can be a device that is internal or external at the dynamic token distribution device.In practical design, reading unit 11 can be realized by the photosensitive unit that comprises photo resistance, photodiode or phototriode, and demodulating unit 12 can be realized by microprocessor.
First intelligent key apparatus begins to show key data with different brightness, brightness variation, color and/or color change (present embodiment is referred to as brightness, brightness variation, color and/or color change information with the information of brightness, brightness variation, color and/or the color change generation of the first intelligent key apparatus screen) circulation when needs carry out authenticating user identification, shows predetermined times or stop demonstration after the scheduled time until circulation.The displaying contents of first intelligent key apparatus output this moment local terminal screen; This displaying contents comprises but not only for brightness, brightness variation, color and/or the color change information of the first intelligent key apparatus screen; This brightness, brightness variation, color and/or color change information are obtained by the key data modulation, and the mode of modulation can be amplitude modulation(PAM) or enumerate phase modulated etc.Said key data can be brightness, brightness variation, color and/or the color change information that generates with the display brightness of expressly directly modulating the first intelligent key apparatus screen; Brightness, brightness variation, color and/or color change information that the display brightness that also can use ciphertext after the encryption to modulate the first intelligent key apparatus screen generates, said encryption can be to carry out according to the key and the AES that prestore.Because the first intelligent key apparatus screen comprises a plurality of viewing areas, therefore the displaying contents of first intelligent key apparatus output can comprise brightness, brightness variation, color and/or the color change information of one or more viewing area.
Reading unit 11 reads the displaying contents of first intelligent key apparatus output, and is sent to demodulating unit 12.12 pairs of brightness of demodulating unit, brightness variation, color and/or color change information are carried out demodulation, obtain key data.Said key data is used to generate cryptographic key factor, and this cryptographic key factor then can be used to generate dynamic password, supplies the user to carry out authentication.The generation of this key data can be the fixing use of disposable generation; Also can be repeatedly to generate, change and use.This key data can generate with random fashion.
Because the displaying contents of first intelligent key apparatus output can comprise brightness, brightness variation, color and/or the color change information of one or more viewing area.Therefore; The brightness, brightness variation, color and/or the color change information that comprise one or more viewing area when the displaying contents of first intelligent key apparatus output; And when displaying contents does not comprise brightness and/or color reference information; Demodulating unit 12 directly carries out demodulation to this brightness, brightness variation, color and/or color change information, obtains corresponding key data.When the displaying contents of first intelligent key apparatus output comprises brightness, brightness variation, color and/or the color change information of two above viewing areas; Then the displaying contents of output also comprises brightness and/or color reference information simultaneously; Demodulating unit 12 carries out brightness and/or color adjustment through this brightness and/or color reference information to brightness, brightness variation, color and/or the color change information of a plurality of viewing areas of reception; Brightness after can obtaining calibrating, brightness variation, color and/or color change information; Carry out demodulation according to the brightness after this calibration, brightness variation, color and/or color change information again, obtain key data.Further; The situation that comprises brightness, brightness variation, color and/or the color change information of two above viewing areas for the displaying contents of first intelligent key apparatus output; First intelligent key apparatus also can be exported synchronizing signal simultaneously, is that brightness, brightness variation, color and/or the color change information of two above viewing areas provides reference synchronization.
Mode two, receiver module 10 receives key data through infrared mode, and promptly second intelligent key apparatus is directly through reception key datas such as infrared transceivers.
At last, generation module 20 directly extracts cryptographic key factor or calculates the generation cryptographic key factor according to the content of key data according to the key data that obtains from the content of key data, and this cryptographic key factor can be used to generate dynamic password.
With reference to Fig. 5; Fig. 5 further specifies the circuit diagram of photosensitive unit when second intelligent key apparatus reads brightness, brightness variation, color and/or color change information through photosensitive unit; This photosensitive unit can comprise photo resistance, photodiode or phototriode, and present embodiment is that example describes with the photo resistance.
As shown in the figure; This photosensitive unit comprises photo resistance 111, amplifying circuit 112 and the A/D change-over circuit 113 that connects successively; After brightness, brightness variation, color and/or color change information are read in photo resistance 111; This brightness, brightness variation, color and/or color change information input amplifying circuit 112 are amplified, and A/D change-over circuit 113 carries out mould/number conversion with the signal of amplifying circuit 112 outputs, will export digital signal to demodulating unit 12 afterwards.
Above-mentioned photo resistance 111 can be substituted by photodiode or phototriode; But when using phototriode; Can be without amplifying circuit 112, the brightness of directly phototriode being read, brightness variation, color and/or color change information input A/D change-over circuit 113 carry out mould/number conversion.
The part that second intelligent key apparatus is provided with photo resistance, photodiode or phototriode is aimed at the zone that brightness on the first intelligent key apparatus screen, brightness variation, color and/or color change information show; Brightness, brightness variation, the color and/or the color change of the first intelligent key apparatus screen be can respond to and brightness, brightness variation, color and/or color change information read; Be appreciated that said second intelligent key apparatus is provided with the shell employing printing opacity design of the part of photo resistance, photodiode or phototriode.
Be appreciated that described first intelligent key apparatus of present embodiment is a dynamic token, the setting device of dynamic token cryptographic key factor is the dynamic token distribution device; Perhaps, said first intelligent key apparatus is the dynamic token distribution device, and the setting device of dynamic token cryptographic key factor is a dynamic token.That is, said key data can be to export to the dynamic token distribution device after being generated by dynamic token, also can be to export to dynamic token after the dynamic token distribution device generates.
In the present embodiment; The modulated of the setting device of dynamic token cryptographic key factor through receiving the output of first intelligent key apparatus brightness of key data, brightness variation, color and/or color change information or infrared information; Receive the key data of first intelligent key apparatus output, generate cryptographic key factor according to key data afterwards.Adopt the set-up mode of this cryptographic key factor, need not on dynamic token, to be provided with the contact communication interface that the programming cryptographic key factor is used, the Seal Design that can accomplish dynamic token realizes water proof and dust proof.
The above is merely the preferred embodiments of the present invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.

Claims (14)

1. the method to set up of a dynamic token cryptographic key factor is characterized in that, comprises step:
Second intelligent key apparatus receives the key data of first intelligent key apparatus output;
Generate cryptographic key factor according to key data.
2. the method for claim 1 is characterized in that, said first intelligent key apparatus is a dynamic token, and second intelligent key apparatus is the dynamic token distribution device; Perhaps, said first intelligent key apparatus is the dynamic token distribution device, and second intelligent key apparatus is a dynamic token.
3. method as claimed in claim 2 is characterized in that, said second intelligent key apparatus receives key data and is specially:
Second intelligent key apparatus receives key data through brightness, brightness variation, color and/or the color change of the first intelligent key apparatus screen.
4. method as claimed in claim 3 is characterized in that, said second intelligent key apparatus comprises through brightness, brightness variation, color and/or the color change reception key data of the first intelligent key apparatus screen:
Second intelligent key apparatus reads the displaying contents of first intelligent key apparatus output; Said displaying contents comprises brightness, brightness variation, color and/or the color change information that is generated by the key data modulation through first intelligent key apparatus;
The brightness, brightness variation, color and/or the color change information that comprise one or more first intelligent key apparatus on-screen display (osd) area when said displaying contents; And when displaying contents does not comprise brightness and/or color reference information; Said brightness, brightness variation, color and/or color change information are carried out demodulation, obtain key data;
The brightness, brightness variation, color and/or the color change information that comprise a plurality of first intelligent key apparatus on-screen display (osd) areas when said displaying contents; And when displaying contents comprises brightness and/or color reference information; Said brightness, brightness variation, color and/or color change information are calibrated the back demodulation, obtain key data.
5. method as claimed in claim 4; It is characterized in that; When said displaying contents comprises brightness, brightness variation, color and/or the color change information of a plurality of first intelligent key apparatus on-screen display (osd) areas; Said displaying contents also comprises brightness, brightness variation, color and/or color change information synchronization signal, is used to said brightness, brightness variation, color and/or color change information reference synchronization is provided.
6. like claim 4 or 5 described methods, it is characterized in that said second intelligent key apparatus reads said brightness, brightness variation, color and/or color change information through photo resistance, photodiode or phototriode.
7. according to claim 1 or claim 2 method is characterized in that, said second intelligent key apparatus receives the key data that first intelligent key apparatus sends and is specially:
Second intelligent key apparatus receives key data through infrared mode.
8. the setting device of a dynamic token cryptographic key factor is characterized in that, comprising:
Receiver module is used to receive the key data that first intelligent key apparatus sends;
Generation module is used for generating cryptographic key factor according to said key data.
9. device as claimed in claim 8 is characterized in that the setting device of said dynamic token cryptographic key factor is a dynamic token, and first intelligent key apparatus is the dynamic token distribution device; Perhaps, said first intelligent key apparatus is a dynamic token, and the setting device of said dynamic token cryptographic key factor is the dynamic token distribution device.
10. device as claimed in claim 9 is characterized in that, said receiver module specifically is used for:
Brightness, brightness variation, color and/or color change through the first intelligent key apparatus screen receive key data.
11. device as claimed in claim 10 is characterized in that, said receiver module comprises:
Reading unit is used to read the displaying contents of first intelligent key apparatus output; Said displaying contents comprises brightness, brightness variation, color and/or the color change information that is generated by the key data modulation through first intelligent key apparatus;
Demodulating unit; Be used for comprising brightness, brightness variation, color and/or the color change information of one or more first intelligent key apparatus on-screen display (osd) area when said displaying contents; And when displaying contents does not comprise brightness and/or color reference information; Said brightness, brightness variation, color and/or color change information are carried out demodulation, obtain key data; And comprise brightness, brightness variation, color and/or the color change information of a plurality of first intelligent key apparatus on-screen display (osd) areas when said displaying contents; And when displaying contents comprises brightness and/or color reference information; Said brightness, brightness variation, color and/or color change information are calibrated the back demodulation, obtain key data.
12. device as claimed in claim 11; It is characterized in that; When said displaying contents comprises brightness, brightness variation, color and/or the color change information of a plurality of first intelligent key apparatus on-screen display (osd) areas; Said displaying contents also comprises brightness, brightness variation, color and/or color change information synchronization signal, is used to said brightness, brightness variation, color and/or color change information reference synchronization is provided.
13., it is characterized in that said reading unit reads said brightness, brightness variation, color and/or color change information through photo resistance, photodiode or phototriode like claim 11 or 12 described devices.
14., it is characterized in that said receiver module specifically is used for like claim 8 or 9 described devices:
Receive key data through infrared mode.
CN201110456577.XA 2011-12-30 2011-12-30 The method to set up of cryptographic key factors of dynamic tokens and device Expired - Fee Related CN102571352B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050010768A1 (en) * 2003-07-08 2005-01-13 Light John J. Information hiding through time synchronization
CN1838595A (en) * 2005-03-25 2006-09-27 日本电气株式会社 The authentication system and the authentication method which use a portable communication terminal
CN201191411Y (en) * 2007-12-07 2009-02-04 邓康乐 Credit card with safety device
CN101930511A (en) * 2009-06-25 2010-12-29 鸿富锦精密工业(深圳)有限公司 Password protection method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050010768A1 (en) * 2003-07-08 2005-01-13 Light John J. Information hiding through time synchronization
CN1838595A (en) * 2005-03-25 2006-09-27 日本电气株式会社 The authentication system and the authentication method which use a portable communication terminal
CN201191411Y (en) * 2007-12-07 2009-02-04 邓康乐 Credit card with safety device
CN101930511A (en) * 2009-06-25 2010-12-29 鸿富锦精密工业(深圳)有限公司 Password protection method

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