CN105404916B - A kind of novel anti-snooping luminous warning optics PUF - Google Patents
A kind of novel anti-snooping luminous warning optics PUF Download PDFInfo
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- CN105404916B CN105404916B CN201510951087.5A CN201510951087A CN105404916B CN 105404916 B CN105404916 B CN 105404916B CN 201510951087 A CN201510951087 A CN 201510951087A CN 105404916 B CN105404916 B CN 105404916B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/073—Special arrangements for circuits, e.g. for protecting identification code in memory
- G06K19/07309—Means for preventing undesired reading or writing from or onto record carriers
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/02—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the selection of materials, e.g. to avoid wear during transport through the machine
- G06K19/022—Processes or apparatus therefor
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
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- Computer Security & Cryptography (AREA)
- General Engineering & Computer Science (AREA)
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- Luminescent Compositions (AREA)
Abstract
The invention discloses a kind of novel anti-snooping luminous warning optics PUF, its structure includes substrate, the optics PUF dielectric layers of growth on substrate, the long after glow luminous material that can be embedded in substrate or optics PUF dielectric layers, and substrate, optics PUF dielectric layers and long after glow luminous material are encapsulated in internal opaque box；The present invention passes through the long after glow luminous material that is added in normal optical PUF structures, it is closed after light source by light source short irradiation, remain to the continuous illumination within some time, using luminous as the foundation for judging whether PUF was spied upon, so that PUF has the function of anti-snooping luminous warning, solving ordinary optical PUF cannot judge whether optics PUF is spied upon the defect for overdriving response pair by enemy；Optics PUF has the function of anti-snooping luminous warning, ensure that the safety of optics PUF, has real practicability, can be widely applied in quantum authentication and quantum-key distribution.
Description
Technical field
The present invention relates to the security fields based on PUF, it is specifically a kind of be suitable for IP protections, system authentication, trust computing,
The novel anti-snooping luminous warning optics PUF in the fields such as secret key generation.
Background technology
In recent years, with information-based and Internet of Things fast development, authentication has become essential in daily life
Key link.However, the things such as the certification cards such as bank card, credit card, identity card information leakage or incident hacker steal, illicit copy
Part occurs, is commonplace again and again, seeks to ensure that the method that identity information is not cloned or falsely uses becomes focus of people's attention.One
A little solutions such as EMV smart cards etc. have used embedded chip instead of conventional magnetic stripe to store identity data, but this are based on
The means of mathematical method, the information in storage card can still be replicated or simulated by unauthorized access and to data, Wu Fazhen
The positive safety for ensureing information.And it is based on physics unclonable function（Hereinafter referred to as PUF）Authentication be the energy being recently proposed
Ensure a kind of novel solution route that certification card information is not replicated and distorts, it is considered to be most promising next-generation identity is recognized
Card scheme.
In addition to authentication, the fields high to safety requirements such as PUF also can be widely used to IP protections, secret key generates.
Current PUF is broadly divided into electricity PUF, optics PUF etc..Electricity PUF especially digital circuit PUF, can be complete by standard technology
It is integrated into embedded device, does not need specific step or component.But compared to optics PUF, it is easier to be attacked and be distorted：
1, electricity PUF does not have mathematics nonclonability substantially.Its floating coat PUF, SRAM PUF, trigger PUF and butterfly PUF lead to
It crosses and reads excitation-response pair in detail, mathematics clone can be easily accomplished；For moderator PUF and some ring oscillations
Mathematics clone can be achieved by modeling to attack in PUF.And optics PUF is uniquely to be proved to unclonable with mathematics up to now
The PUF of property.2, the excitation of coating PUF is very little（Tens）, a random excitation will have certain probability to obtain specific response.
Other electricity PUF outputs are only individual bit, and a random excitation will have 50% possibility correctly to be responded.Therefore
Electricity PUF does not have one-way.Disordered Media and excitation light interaction process are complicated in optics PUF, are unable to get specific
Response, be the PUF methods for being uniquely possible to that there is physics one-way.3, it is clearly to have there was only optics PUF and coating PUF so far
There are tamper-resistance properties, whether other PUF can be anti-tamper also unknown.In addition, the microstructure of Disordered Media includes in optics PUF
Information content it is huge, can not to its accurate modeling, in microstructure minimum change response can be caused to generate huge change, have
Tamper-resistance properties can be used as certification and secret key generator, be referred to as " strong PUF " simultaneously, and therefore, optics PUF has big advantage,
It is the following optimal path for realizing quantum authentication.
However, current existing ordinary optical PUF can not prevent attacker from spying upon to obtain the excitation-of PUF using laser
Response pair, also can not judge whether PUF was spied upon by attacker.The purpose of the present invention is exactly to disclose a kind of completely new anti-snooping hair
Light is warned optics PUF, so that user can learn whether PUF was spied upon, so that it is guaranteed that the safety that optics PUF is used
Property.
Invention content
The purpose of the present invention is to provide a kind of novel anti-snooping luminous warning optics PUF, optics PUF is effectively utilized
The luminescent behavior of long after glow luminous material under light illumination can be used as the effective foundation for judging whether PUF is spied upon, and solve common
Optics PUF cannot prevent attacker from spying upon to obtain the defect of PUF excitation-response pairs using excitation light, recycle long-afterglow material
The function of anti-snooping luminous warning, optics PUF security performances may be implemented in the long afterglow effect generated under ambient lighting
It is high.
The technique effect of the present invention is as follows：
A kind of novel anti-snooping luminous warning optics PUF, it is characterised in that：More than substrate, optics PUF dielectric layers and length
Brightness luminescent material, optics PUF dielectric layers are grown on substrate, and long after glow luminous material is embedded into substrate or long afterglow hair
Luminescent material is embedded into optics PUF dielectric layers, forms whole substrate, optics PUF dielectric layers and long after glow luminous material encapsulation
In the inside of opaque box.
Common non-long after glow luminous material may be used in the substrate, can be transparent material, can also be opaque material
Material, can be rigid material, can also be flexible material, while material can be the material of plane or curved surface.It is described
Substrate is one such using jewel piece, quartz glass, silicon chip, aluminium, copper etc..
The substrate can also use long after glow luminous material, and long after glow luminous material can be that transparent material can also be
Opaque material, long after glow luminous material can also be that rigid material can also be flexible material, and long after glow luminous material can be with
It is that plane can also curved surface.
The optics PUF dielectric layers be by medium nano-particle random growth at loose porous strong scattering structure Jie
Matter layer, the material that may be used include but not limited to one kind in zinc oxide, titanium oxide, gallium phosphide, indium phosphide, barium titanate or it
The mixture that arbitrarily combines.To ensure to obtain the speckle pattern of enough information, medium nano-particle should meet multiple scattering item
Part, i.e., when light is propagated in the optics PUF dielectric layers, the thickness of the optics PUF dielectric layers is more than the average freedom of light
10 times of journey.
When substrate is using common non-long after glow luminous material, long after glow luminous material is then embedded in optics PUF dielectric layers
In；When substrate uses long after glow luminous material, long after glow luminous material then can be both embedded in optics PUF dielectric layers,
Can simultaneously it be embedded into optics PUF and substrate.
The long after glow luminous material using in alkaline earth aluminate, alkaline-earth silicate or sulfide etc. one kind or they appoint
The mixture of meaning combination.The persistence of long after glow luminous material is more than tolerable drop-out time.
The opaque box uses the material to using wave band opaque.When be authenticated using optics PUF or as
Secret key distribution normal operating when, opaque box be open mode, excitation light can be irradiated on optics PUF encouraged-
Response pair.Under non-service condition, opaque box is close pattern, avoids external environmental light irradiation that PUF is made to shine to peep-proof
It visits and generates interference.
The present invention adds long after glow luminous material in normal optical PUF structures, passes through light source short irradiation,
It closes after light source, remains to the continuous illumination within some time.This shines and can be used as the foundation for judging whether PUF is spied upon,
So that PUF has the function of anti-snooping luminous warning, solving ordinary optical PUF cannot prevent attacker from being peeped using excitation light
Elicite the defect of PUF excitation-response pairs.Its operation principle is as follows：
As attacker PUF to be spied upon, the opaque box of encapsulation PUF, at this moment, ambient light must be opened or destroyed first
Irradiation can make PUF shine, so as to as the basis for estimation spied upon, realize the first anti-snooping luminous warning protection again.
Even if attacker opens opaque box in darkroom, but to implement certification of attacking or assume another's name, just have to spy upon
The excitation-response pair of PUF.Since attacker does not know the type of long after glow luminous material, using shorter than long-afterglow material hair
PUF will be made to shine when the light stimulus of optical wavelength.If attacker puts back to PUF in less than tolerable drop-out time, can
To penetrate the PUF from shining and spied upon；If, can be apparent putting back to or not putting back to PUF by PUF more than the tolerable time
Judge that the PUF is spied upon, so that it may think that this PUF fails.To realize the second anti-snooping luminous warning protection again.
This kind of novel optical PUF has the function of anti-snooping luminous warning, ensure that the safety of optics PUF.And more than length
This Materials of brightness luminescent material are ripe, prepare simply, can be used very advantageously in optics PUF, have really real
With property, can be widely applied in quantum authentication and quantum-key distribution.
Beneficial effects of the present invention are as follows：
1, long after glow luminous material is combined compared to common optics PUF, optics PUF proposed by the present invention.This length
The luminescent behavior of afterglow materials under light illumination can be used as the foundation for judging whether PUF is spied upon, and prevent so that PUF has
Luminous warning function is spied upon, solving ordinary optical PUF cannot prevent attacker from spying upon to obtain PUF excitations-sound using excitation light
The defect of reply；
2, since long-afterglow material also will produce long afterglow effect under ambient lighting, the present invention is sealed using opaque box
Fill entire optics PUF.On the one hand avoiding ambient light irradiation in this way makes PUF shine to anti-snooping generation interference；On the other hand, when
When attacker opens opaque box and spies upon under ambient light, PUF will be made to shine, realizes anti-snooping luminous warning
Function；
When 3, opening PUF under darkroom as attacker and being spied upon with laser, due to not knowing that long after glow luminous material swashs
Luminous spectrum will make PUF shine once incentive optical wavelength is shorter than long after glow luminous material excitation wavelength.The present invention is also provided with
Tolerable drop-out time.If attacker puts back to PUF in less than tolerable drop-out time, the PUF can be penetrated from shining
It was spied upon；If putting back to or not putting back to PUF by PUF more than the tolerable time, it can obviously judge that the PUF is peeped
It visits, so that it may think that this PUF fails.To achieve the purpose that anti-snooping luminous warning.
Description of the drawings
Fig. 1 is the anti-snooping luminous warning optics PUF schematic diagrames that excitation wavelength of the present invention is more than 550nm；
Wherein：1 is quartz glass substrate；2 be TiO2Nano particle optics PUF dielectric layers；3 are situated between to be embedded in optics PUF
Long after glow luminous material Sr in matter layer2Mg2SiO7：Eu, Dy；4 be opaque box.
Fig. 2 is that the long after glow luminous material of the present invention uses Sr2Mg2SiO7：Eu, Dy excitation spectrum and emission spectra.
Fig. 3 is the present invention for the anti-snooping luminous warning optics PUF schematic diagrames for being actuated near infrared light；
Wherein：1 is jewel piece substrate；2 be ZnO2Nano particle optics PUF dielectric layers；3 be to be embedded in optics PUF media
Long after glow luminous material Zn in layer3Ga2Ge2O10：Cr3+；4 be opaque box.
Fig. 4 is long after glow luminous material Zn3Ga2Ge2O10：Cr3+Excitation spectrum and emission spectra.
Fig. 5 is the present invention for the anti-snooping luminous warning optics PUF schematic diagrames that excitation wavelength is near-infrared；
Wherein：1 is ceramic substrate；2 be GaP nano particle optics PUF dielectric layers；3 be the length being embedded in ceramic substrate
Afterglow materials Zn3Ga2Ge2O10：Cr3+；4 be opaque box.
Specific implementation mode
Embodiment 1
A kind of excitation wavelength is more than the anti-snooping luminous warning optics PUF of 550nm.
Sr is used in the present embodiment2Mg2SiO7：Eu, Dy are as long-persistence luminous anti-snooping material.Its structural schematic diagram is such as
Shown in Fig. 1.
Optics PUF is using the quartz glass of 250 micron thickness as substrate.By 5g long afterglows Sr2Mg2SiO7：Eu, Dy
Nano particle is blended in the TiO that 200g grain sizes are 200nm2In nanoparticulate dispersion, dispersing liquid fraction is 5%.Later
Mixed dispersion liquid is sprayed on quartz glass, optics PUF scattering Jie that 20-30 micron thickness is embedded into long-afterglow material is formed
Matter.Finally this structure is put into slidable opaque box and ensures that box is closed in dead optics PUF
Prevent ambient light irradiation PUF from leading to luminescence phenomenon.As shown in Fig. 2, being long after glow luminous material Sr2Mg2SiO7：The transmitting of Eu, Dy
Spectrum and excitation spectrum, the material are non-lasing region when wavelength is more than 550nm, the light of this wave band will not result in long-persistence luminous existing
As.It is lasing region that the material, which is 250-550nm wave bands in wavelength, i.e., the light in the region will cause luminescent material to generate long afterglow hair
Optical phenomenon, transmitting optical band are 425-550nm.Therefore the laser more than wavelength 550nm can be used as normal use optics PUF
When excitation, will not cause at this time optics PUF shine.The long afterglow time of the luminescent material is more than 30 hours, therefore will lose can
Patient time is set as 30 hours.When attacker has stolen the optics PUF in the implementation case, once there is ambient light（As too
Sunlight, light）In the case of open lid, then long after glow luminous material will be excited and send out blue light and warn；If attacker
Lid is opened in the case of no ambient light, but Challenge-response clock synchronization is being spied upon using exciting light, due to not knowing that long afterglow is sent out
Luminescent material excitation spectrum will make PUF shine once incentive optical wavelength is shorter than 550nm.If attacker will in less than 30 hours
PUF is put back to, then can penetrate the PUF from the blue-light-emitting of PUF was spied upon；If PUF is put back to more than 30 hours or will not
PUF is put back to, then can directly judge that the PUF fails.To achieve the purpose that anti-snooping luminous warning.
Embodiment 2
It is a kind of to crack anti-snooping luminous warning optics PUF for being actuated to the anti-of near infrared light.
Zn is used in the present embodiment3Ga2Ge2O10：Cr3+As long-persistence luminous anti-snooping material.Its structural schematic diagram is such as
Shown in Fig. 3.Optics PUF is using the jewel piece of 160 micron thickness as substrate.It is 2-5 microns of long afterglows by 10g grain diameters
Luminescent material Zn3Ga2Ge2O10：Cr3+Particle, the grain diameter for being blended in 200g is the ZnO of 200nm2In nanoparticulate dispersion,
Dispersing liquid fraction is 2.5%.Mixed dispersion liquid is sprayed on jewel piece substrate later, 20-30 micron thickness is formed and is embedded into
The optics PUF scattering mediums of long-afterglow material.Finally this structure is put into slidable opaque box and is ensured in dead
When optics PUF, box, which is closed, prevents daylight or light-illuminating optics PUF from leading to luminescence phenomenon.Fig. 4 sends out for long afterglow
Luminescent material Zn3Ga2Ge2O10：Cr3+Emission spectra and excitation spectrum, the material wavelength be more than 650nm when be non-lasing region, this wave
The light of section will not result in long-persistence luminous phenomenon.It is lasing region, the light in the region that the material, which is 300-650nm wave bands in wavelength,
Luminescent material will be caused to generate long-persistence luminous phenomenon, transmitting optical band is 650-900nm.Therefore, it can be used more than wavelength
The excitation when laser of 650nm is as normal use optics PUF will not cause optics PUF to shine at this time.The length of the luminescent material
Persistence is more than 360 hours, therefore is set as the tolerable time is lost 360 hours.When attacker has stolen the implementation case
In optics PUF, once there is ambient light（Such as sunlight, light）In the case of open lid, then long after glow luminous material is just
It can be excited and send out feux rouges and warn；If attacker opens lid in the case of no ambient light, but is spied upon using exciting light
Challenge-response clock synchronization, once incentive optical wavelength is shorter than 650nm, will make due to not knowing long after glow luminous material excitation spectrum
PUF shines.If attacker puts back to PUF in less than 360 hours, the PUF can be penetrated from the blue-light-emitting of PUF and spied upon
It crosses；If putting back to or not putting back to PUF by PUF more than 360 hours, it can directly judge that the PUF fails.To reach peep-proof
Visit the purpose of luminous warning.
Embodiment 3
A kind of anti-snooping luminous warning optics PUF for based on long afterglow ceramic material excitation wavelength for near-infrared is adopted
With the Zn of 160 micron thickness3Ga2Ge2O10：Cr3+Ceramics are used as substrate.The substrate has long-persistence luminous property simultaneously.By body
The GaP nanoparticulate dispersions that fraction is 2.5%, grain diameter is 200nm are sprayed on the substrate with long-persistence luminous property
On, form 20-30 micron thickness optics PUF scattering mediums.Finally this structure is put into slidable opaque box and is ensured
In dead optics PUF, box, which is closed, prevents daylight or light-illuminating optics PUF from leading to luminescence phenomenon.It is tied
Structure schematic diagram is as shown in Figure 5.The long-persistence luminous spectral quality of the ceramic substrate materials is consistent with Fig. 4, is more than 650nm in wavelength
The light of Shi Weifei lasing regions, this wave band will not result in long-persistence luminous phenomenon.The material is that 300-650nm wave bands are in wavelength
The light of lasing region, the region will cause luminescent material to generate long-persistence luminous phenomenon, and transmitting optical band is 650-900nm.Therefore,
Excitation of the laser more than wavelength 650nm as normal use optics PUF when can be used, optics PUF will not be caused to shine at this time.
The long afterglow time of the luminescent material is more than 360 hours, therefore is set as the tolerable time is lost 360 hours.When attacker steals
The optics PUF in the implementation case has been stolen, once there is ambient light（Such as sunlight, light）In the case of open lid, then grow
Afterglow materials will be excited and send out feux rouges and warn；If attacker opens lid in the case of no ambient light, but
Challenge-response clock synchronization is spied upon using exciting light, due to not knowing long after glow luminous material excitation spectrum, once incentive optical wavelength is short
In 650nm, PUF will be made to shine.If attacker puts back to PUF in less than 360 hours, can know from the blue-light-emitting of PUF
The PUF is broken to be spied upon；If putting back to or not putting back to PUF by PUF more than 360 hours, it can directly judge that the PUF loses
Effect.To achieve the purpose that anti-snooping luminous warning.
Claims (8)
1. a kind of novel anti-snooping luminous warning optics PUF, it is characterised in that：Including substrate（1）, optics PUF dielectric layers（2）With
Long after glow luminous material（3）, optics PUF dielectric layers（2）It is grown in substrate（1）On, long after glow luminous material（3）It is embedded into substrate
（1）In or long after glow luminous material（3）It is embedded into optics PUF dielectric layers（2）In, form whole substrate（1）, optics PUF
Dielectric layer（2）And long after glow luminous material（3）It is packaged in opaque box（4）Inside;The optics PUF dielectric layers（2）It is
By medium nano-particle random growth at loose porous strong scattering structure dielectric layer, the material of use include zinc oxide,
One kind in titanium oxide, gallium phosphide, indium phosphide, barium titanate or the mixture that they are arbitrarily combined;When light is situated between in the optics PUF
Matter layer（2）When middle propagation, the optics PUF dielectric layers（2）Thickness be more than 10 times of mean free path of light.
2. the novel anti-snooping luminous warning optics PUF of one kind according to claim 1, it is characterised in that：The substrate is adopted
With non-long after glow luminous material（3）；Using non-long after glow luminous material（3）When, it is transparent material or opaque material,
It is rigid material or flexible material simultaneously, while is the material of the material either curved surface of plane.
3. the novel anti-snooping luminous warning optics PUF of one kind according to claim 2, it is characterised in that：The substrate is adopted
It is one such with jewel piece, quartz glass, silicon chip, aluminium, copper.
4. the novel anti-snooping luminous warning optics PUF of one kind according to claim 1, it is characterised in that：The substrate is adopted
Use long after glow luminous material（3）；The long after glow luminous material（3）It is transparent material either opaque material, while described
Long after glow luminous material（3）It is rigid material or flexible material, while the long after glow luminous material（3）It is plane or curved surface.
5. the novel anti-snooping luminous warning optics PUF of one kind according to claim 2 or 3, it is characterised in that：When substrate is adopted
With non-long after glow luminous material（3）When, long after glow luminous material（3）Then it is embedded in optics PUF dielectric layers（2）In.
6. the novel anti-snooping luminous warning optics PUF of one kind according to claim 4, it is characterised in that：When substrate uses
Long after glow luminous material（3）When, long after glow luminous material（3）Then it is embedded in optics PUF dielectric layers（2）In or long afterglow hair
Luminescent material（3）It is embedded into simultaneously in optics PUF dielectric layers（2）In substrate.
7. the novel anti-snooping luminous warning optics PUF of one kind according to claim 6, it is characterised in that：The long afterglow
Luminescent material（3）Using in alkaline earth aluminate, alkaline-earth silicate or sulfide one kind or mixture that they are arbitrarily combined；Institute
State long after glow luminous material（3）Persistence be more than tolerable drop-out time.
8. the novel anti-snooping luminous warning optics PUF of one kind according to claim 1, it is characterised in that：It is described opaque
Box uses the material to using wave band opaque.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3252740B1 (en) * | 2016-05-31 | 2018-08-01 | Schott AG | Optical key protected quantum authentication and encryption |
| CN108075898B (en) * | 2017-12-25 | 2020-12-11 | 中国工程物理研究院电子工程研究所 | Quantum authentication method with triple security mechanisms |
| CN109448188B (en) * | 2018-10-29 | 2021-04-30 | 京东方科技集团股份有限公司 | Light-operated lock, unlocking method, photon key and light-operated lock system |
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| CN102478515A (en) * | 2010-11-29 | 2012-05-30 | 沈阳理工大学 | A detection method of laser anti-counterfeiting materials based on color coding |
| CN102909988A (en) * | 2012-10-31 | 2013-02-06 | 中国人民银行印制科学技术研究所 | Valuable document and identification method thereof |
| CN104736348A (en) * | 2012-10-18 | 2015-06-24 | 联邦印刷有限公司 | Identity card with physical unclonable function |
| CN205563647U (en) * | 2015-12-19 | 2016-09-07 | 中国工程物理研究院电子工程研究所 | Novel luminous optics PUF that warns is visited to peep -proof |
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2015
- 2015-12-19 CN CN201510951087.5A patent/CN105404916B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102478515A (en) * | 2010-11-29 | 2012-05-30 | 沈阳理工大学 | A detection method of laser anti-counterfeiting materials based on color coding |
| CN104736348A (en) * | 2012-10-18 | 2015-06-24 | 联邦印刷有限公司 | Identity card with physical unclonable function |
| CN102909988A (en) * | 2012-10-31 | 2013-02-06 | 中国人民银行印制科学技术研究所 | Valuable document and identification method thereof |
| CN205563647U (en) * | 2015-12-19 | 2016-09-07 | 中国工程物理研究院电子工程研究所 | Novel luminous optics PUF that warns is visited to peep -proof |
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