Two-dimensional security method using double light-emitting encryption material, double light-emitting encryption cube, manufacturing method of double light-emitting encryption cube and three-dimensional security method using encryption cube

Abstract

The present invention provides a two-dimensional security method that forms encrypted information by mixing false information and disguised information using a dual-emitting fluorescent and phosphorescent material, and a three-dimensional security method using a dual-emitting type encryption cube having a three-dimensional encryption pattern by dual-emitting fluorescent and phosphorescent materials, wherein the dual-emitting type encryption cube includes eight vertices of a cube and 12 cube branches connecting each of the eight vertices, wherein, according to a preset three-dimensional encryption pattern, the information branches of the encryption cube included in the three-dimensional encryption pattern are made of fluorescent-phosphorescent filaments, and the disguised branches of the encryption cube not included in the three-dimensional encryption pattern are made of fluorescent filaments, and the information branches and disguised branches are arranged in any one of six outer branches forming a cube centered on the vertices and six inner branches connecting each of the contact points of the six outer branches to the central vertex. By providing this, the invention provides a security method with excellent security that is not exposed even by cracking.

Description

Technology Field

[0001] The present invention relates to a two-dimensional security method using a dual-emitting material, a dual-emitting encryption cube, a method for manufacturing a dual-emitting encryption cube, and a three-dimensional security method using a dual-emitting encryption cube. More specifically, the invention relates to a two-dimensional security method using a camouflage ink made of a fluorescent material and a real ink using a dual-emitting material that is fluorescent and phosphorescent, a dual-emitting encryption cube in which the entire cube emits fluorescent light and only the cube that forms a meaningful pattern after fluorescent light emits phosphorescent light, a method for manufacturing a dual-emitting encryption cube to have a three-dimensional pattern structure in which information changes depending on the viewing angle and position using the dual-emitting encryption cube, and a three-dimensional security method using the dual-emitting encryption cube to encrypt and decrypt using the three-dimensional pattern structure of the dual-emitting encryption cube. Background Technology

[0003] Over the past decade, advanced technology has made rapid progress, completely transforming the way people connect and communicate with one another and realizing a "hyper-connected society." However, this connected society has led to a gradual decline in information security, including the privacy, confidentiality, and secrecy that individuals value. Consequently, the issue of securing confidential data security based on encryption systems has emerged. Accordingly, information encryption technologies based on electrical or optical encryption are being widely developed. Among these optical encryption technologies, which include those based on chromism, structural color, and metasurface holography, photoluminescence (PL) based technology is receiving particular attention due to its low probability of being hacked by digital computing systems, as well as its self-luminous ability, high brightness, and efficiency.

[0004] Although PL encryption technology based on organic fluorescent materials is widely adopted, room-temperature organic phosphorescence (RT-OP), which occurs when an exciton undergoes a radiative transition from a triplet excited state to the ground state, is also receiving significant attention in many fields such as displays, bioimaging, document security, encryption, and anti-counterfeiting.

[0005] Published Patent No. 10-2018-0093135, cited herein as prior art, discloses a security structure comprising a phosphorescent and fluorescent composition.

[0006] Referring to FIG. 1, in the prior art, one or more patterns (15) are printed by a phosphorescent composition (12) as shown in (b), and then printed with a fluorescent composition (13) as shown in (a). The phosphorescent composition (12) and the fluorescent composition (13) can be selected to emit light by emitting light under ultraviolet excitation of a wavelength of 365 nm, and since they have the same color at substantially the same intensity, the structure (10) appears to have a substantially uniform shape under ultraviolet light, and as shown in FIG. 1(a), the observer cannot distinguish the patterns (15) formed by the phosphorescent composition (12).

[0007] After the ultraviolet light emission is extinguished, the layer of the fluorescent composition (13) stops emitting light, and patterns (15) partitioned by the phosphorescent composition (12) appear and are visible, as shown in FIG. 1(b).

[0008] Additionally, a phosphorescent composition (12) and a fluorescent composition (13) that produce different colors by luminescence may be used. In this case, under ultraviolet light of a wavelength of 365 nm, the two compositions (12)(13) emit different light by additive synthesis at the place where the compositions (12)(13) overlap, thereby showing patterns (15) that appear as a first color on a colored background (16) that appears as a different color, which is that of the fluorescence of the fluorescent composition (13) in the example described in FIG. 1(c). For example, while using a fluorescent composition (13) that emits blue light by fluorescence and a phosphorescent composition (12) that emits yellow light by phosphorescence under ultraviolet light, the patterns (15) appear white by additive synthesis at the place where the compositions overlap, while the background (16) appears blue. When the ultraviolet light emission is extinguished, as shown in FIG. 1(d), the patterns (15) appear yellow during the afterglow time of the phosphorescent composition (12).

[0009] However, the conventional method disclosed in the aforementioned prior art has a problem in that, if it is known that the security form utilizes a phosphorescent or fluorescent composition, the secured information can be easily verified by irradiation with ultraviolet rays (UV).

[0010] In addition, the conventional method disclosed in the aforementioned prior art has a problem in that even if the information is encrypted, the actual information can be exposed through cracking on computer equipment where the computation speed is astronomically high. Prior art literature

[0012] Published Patent No. 10-2018-0093135 The problem to be solved

[0013] The present invention was devised to resolve the aforementioned problem, and its purpose is to provide a two-dimensional security method using a dual-luminescent material that enhances security by diverting actual information to other information.

[0014] In addition, the present invention aims to provide a dual-luminescent encryption cube capable of encrypting a three-dimensional pattern structure using a dual-luminescent material to provide reliable security even against cracking using a high-performance computer.

[0015] In addition, the present invention aims to provide a method for manufacturing a dual-luminescent encryption cube capable of encrypting a three-dimensional pattern structure using a dual-luminescent material to provide reliable security even against cracking using a high-performance computer.

[0016] In addition, the present invention aims to provide a three-dimensional security method using a dual-luminescent encryption cube that encrypts and decrypts using a three-dimensional pattern structure of the dual-luminescent encryption cube.

[0017] Although the objectives of the present invention have been described in detail above, not only the aforementioned objectives but also additional objectives derived in the process of achieving the aforementioned objectives are included within the scope of the problems to be solved by the present invention. means of solving the problem

[0019] In a preferred embodiment of the present invention, a two-dimensional security method using a dual-emitting material of fluorescence and phosphorescence is provided, comprising: an encryption process including the step of attaching a masking tape to a substrate; the step of patterning the masking tape to expose an area to be printed with encrypted information; the step of printing actual information on the exposed area with ink mixed with a dual-emitting material of fluorescence and phosphorescence, and printing camouflage information associated with the actual information with ink mixed with a fluorescent material to print encrypted information in combination with the actual information and camouflage information; and the step of removing the masking tape; and a decryption process including the step of irradiating the encrypted information with ultraviolet light for a preset time to cause fluorescence emission, and the step of stopping the irradiation of the ultraviolet light to stop the emission of the camouflage information and displaying the actual information by the phosphorescence of the actual information.

[0020] In another preferred embodiment of the present invention, a dual-luminescent encryption cube having a three-dimensional encryption pattern by dual emission of fluorescence and luminescence is provided, comprising eight vertices of a cube and 12 cube branches connecting each of the eight vertices, wherein, according to a preset three-dimensional encryption pattern, the information branches of the encryption cube included in the three-dimensional encryption pattern are made of fluorescent-phosphorescent filaments, and the camouflage branches of the encryption cube not included in the three-dimensional encryption pattern are made of fluorescent filaments, and wherein the information branches and camouflage branches are positioned in either of six outer branches forming a cube centered on the vertices, and six inner branches connecting each of the contact points of the six outer branches to the central vertex.

[0021] In another preferred embodiment of the present invention, the vertex further comprises a vertex branch coupling member formed of a porous sphere having a plurality of closed holes to which the cube branches are connected, wherein the porous sphere is formed with closed holes formed in three directions, such as a horizontal axis (x), a vertical axis (y), and a vertical axis (z) orthogonal to the plane formed by the horizontal axis and the vertical axis, thereby providing a dual-luminescent encryption cube characterized in that cube branches are selectively coupled to each closed hole according to the three-dimensional encryption pattern.

[0022] In another preferred embodiment of the present invention, a dual-luminescent encryption cube is provided, wherein, in the above-described embodiment, the vertex branch coupling member is characterized by having a vertex branch coupling member identifier that can identify the vertex branch coupling member displayed thereon.

[0023] In another preferred embodiment of the present invention, a method for manufacturing a dual-emitting type encryption cube capable of dual fluorescence and phosphorescence is provided, comprising the steps of: mixing a fluorescent emitting material in a polymer solvent to form a fluorescent solution; mixing a fluorescent-phosphorescent dual-emitting material in a polymer solvent to form a fluorescent-phosphorescent solution; filling the fluorescent solution and the fluorescent-phosphorescent solution into the intaglio patterns of separate patterned molds; drying the fluorescent solution and the fluorescent-phosphorescent solution filled in the molds at room temperature to form a fluorescent filament and a fluorescent-phosphorescent filament, respectively; cutting the fluorescent filament and the fluorescent-phosphorescent filament to match the length of the cube branches of a predetermined encryption cube; and, according to a predetermined three-dimensional encryption pattern, assembling the information branches of the encryption cube included in the three-dimensional encryption pattern with the fluorescent-phosphorescent filaments, and assembling the camouflage branches of the encryption cube not included in the three-dimensional encryption pattern with the fluorescent filaments.

[0024] In another preferred embodiment of the present invention, a three-dimensional security method using a dual-emitting type encryption cube with a three-dimensional pattern formed with a fluorescent emitting material and a fluorescent-phosphorescent dual-emitting material, wherein the encryption cube is formed by assembling cube branches with a fluorescent-phosphorescent emitting material on the information branches of the encryption cube forming the three-dimensional encryption pattern according to a preset three-dimensional encryption pattern, and assembling cube branches with a fluorescent emitting material on the camouflage branches of the encryption cube not included in the three-dimensional encryption pattern, thereby generating a patterned encryption cube, and the three-dimensional security method comprises an encryption setting process for setting a user's password according to a three-dimensional encryption pattern set between a user terminal and a security device, and

[0025] A user password input process comprising: a step of inputting a user password at the above user terminal, wherein encryption cubes corresponding to the user password are arranged in order among pre-patterned encryption cubes, and information branches and disguise branches are placed at precise locations centered on vertices according to the encryption pattern of each of the patterned encryption cubes; a step of irradiating ultraviolet rays for a preset time on the encryption cubes arranged in order according to the user password; a step of photographing the encryption cubes arranged in order according to the encryption information after stopping the irradiation of ultraviolet rays; a step of generating password input information by binarizing the information branches and disguise branches of each photographed encryption cube; and a step of transmitting the generated password input information to the security device; and a process of decoding the input user password at the security device, wherein the security device generates a 3D encryption pattern of the encryption cube in order based on the binarized information of the user password received from the user terminal; a step of calculating a matching rate by comparing the pattern of the user password registered in the encryption setting process with the 3D encryption pattern of the generated encryption cube; and if the matching rate is greater than or equal to a preset value, security is unlocked and information is provided as a successful match, and if the matching rate is less than the preset value, matching A three-dimensional security method using a dual-luminescent cube is provided, which includes a user password decryption process that transmits a matching failure notification upon failure.

[0026] In another preferred embodiment of the present invention, a three-dimensional security method using a dual-emitting type cube is provided, wherein, in the above-described embodiment, the fluorescent-phosphorescent dual-emitting material emitting fluorescent and phosphorescent light is based on a lead (Pb)-containing metal-organic framework (MOF) having trimesic acid (TMA) organic ligand, and the ultraviolet light is characterized by using a UV lamp with a wavelength of 254 nm or less. Effects of the invention

[0028] According to a two-dimensional security method using a dual-luminescent material according to a preferred embodiment of the present invention, there is an effect of enhancing security by luring actual information into other information.

[0029] In addition, according to a preferred embodiment of the present invention, a dual-luminescent encryption cube, a method for manufacturing a dual-luminescent encryption cube, and a three-dimensional security method using a dual-luminescent cube, reliable security can be provided even against cracking using a high-performance computer through a three-dimensional pattern structure that provides different information depending on the position and viewing angle.

[0030] Although the effects of the present invention have been described in detail above, the present invention includes not only the effects described above but also additional effects derived in the process of obtaining the effects described above as effects of the present invention. Brief explanation of the drawing

[0032] Figure 1 is an example of a security structure according to prior art. FIG. 2 is a flowchart of the encryption and decryption processes of a two-dimensional security method using a dual-emitting fluorescent and phosphorescent material according to a preferred embodiment of the present invention. FIG. 3 is an illustrative diagram for explaining the principles of encryption and decryption according to a two-dimensional security method using a dual light-emitting material according to a preferred embodiment of the present invention. FIG. 4 is a comparative example diagram illustrating experimental results regarding the decoding results by wavelength of ultraviolet light applied to a two-dimensional security method using a dual-luminescent material according to a preferred embodiment of the present invention. FIG. 5 is a flowchart illustrating a method for manufacturing a dual-luminescent encryption cube according to a preferred embodiment of the present invention. FIG. 6 is an illustrative diagram showing a three-dimensional encryption pattern structure according to a preferred embodiment of the present invention. FIG. 7 is a structural diagram of a dual-emitting encryption cube having a three-dimensional encryption pattern structure according to a preferred embodiment of the present invention. FIG. 8 is an example of another figure having a three-dimensional encryption pattern structure according to a preferred embodiment of the present invention. FIG. 9 is an exemplary diagram illustrating the process of decryption in an application of a security system using a three-dimensional encryption pattern according to a preferred embodiment of the present invention. Figure 10 is an example diagram illustrating a scene in which an encryption cube is placed, and then photographed after UV irradiation and interruption. Figure 11 is an example of fluorescence and phosphorescence emission when the three-dimensional encryption pattern matches and when it does not match. FIG. 12 is a principle diagram illustrating the number of cases according to the position and time of an encryption cube in a security system based on a three-dimensional encryption pattern according to a preferred embodiment of the present invention. FIG. 13 is an example diagram showing the calculation of security efficiency in a security system based on a three-dimensional encryption pattern according to a preferred embodiment of the present invention. Throughout the specification, including drawings and detailed descriptions, identical elements and elements having the same function and / or the same technical or physical effect are given the same reference number or the same name, and the descriptions of elements and their functions shown or described in different embodiments are interchangeable or applicable to each other in different embodiments. In addition, reference numbers described in one drawing may be omitted in other drawings to simplify identification of the drawings, and parts unrelated to the present invention or unrelated to the description of specific parts may be omitted from the drawings, but this does not imply their absence. In addition, it should be noted that the reference numerals used in the drawings of the prior art and the drawings of the present invention are unrelated to each other, and even if the reference numerals are the same, they represent distinct and separate components. Specific details for implementing the invention

[0033] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention.

[0034] It should be noted that the embodiments described below are not intended to limit the invention and may be implemented in various different forms, including various modifications, equivalents, or alternatives.

[0035] The features of the present invention and the resulting effects will become clearer with reference to the embodiments described in detail below, together with the accompanying drawings.

[0036] In describing the embodiments of the present invention, specific descriptions of known functions or configurations will be omitted unless actually necessary for describing the embodiments of the present invention. Furthermore, the terms described below are defined in consideration of the functions in the embodiments of the present invention, and these may vary depending on the intentions or practices of the user or operator. Therefore, such definitions should be based on the content throughout this specification.

[0037] Furthermore, when a part is said to "include" a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but rather may include additional components, and it should be understood as not excluding in advance the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0038] In this regard, directional terms such as "upper," "lower," "below," "forward," "backward," "leading," "following," and "up" may be used with reference to the orientation of the described drawings. Since parts of the embodiments may be arranged in a number of different orientations, directional terms are used for illustrative purposes only and are by no means limiting. It should be understood that other embodiments may be used and that structural or logical changes may be made without departing from the scope defined by the claims. Therefore, the following detailed description should not be interpreted in a limiting sense.

[0039] When a component is referred to as being "connected" or "combined" to another component, it should be understood that there may be components that are directly connected to or combined with the other component, or that intervening components exist. Conversely, when one component is referred to as being "directly connected" or "directly combined" to another component, there are no intervening components. Other words used to describe relationships between elements should be interpreted in a similar manner (e.g., "between" versus "directly between," "adjacent" versus "directly adjacent," etc.).

[0041] Hereinafter, to aid in understanding the present invention, a preferred embodiment will be described in more detail.

[0043] (Example 1: Two-dimensional security method)

[0044] Hereinafter, with reference to FIG. 2, a two-dimensional security method using a dual-emitting material of fluorescence and phosphorescence according to a preferred embodiment of the present invention will be described.

[0045] FIG. 2 is a flowchart of the encryption and decryption processes of a two-dimensional security method using a dual-emitting fluorescent and phosphorescent material according to a preferred embodiment of the present invention. To aid understanding, the cross-sectional structure is shown together with the three-dimensional structure of each step. In a preferred embodiment of the present invention, a cryptographic ink consisting of a polymer solution containing a dual-emitting fluorescent and phosphorescent material and a camouflage ink consisting of a polymer solution containing only a fluorescent material are printed directly onto the surface of a VHB tape (3M) using an art technique called pochoir.

[0046] First, a masking tape is attached to the top of the surface to be printed. For example, as shown in FIG. 2, a masking cover is attached to the surface of the substrate using a high-adhesion double-sided tape such as 3M’s VHB (Very High Bonding).

[0047] Afterwards, the masking cover is patterned to expose the area to be printed with encryption information.

[0048] In the above-mentioned exposed area, actual information is printed using cryptographic ink containing a metal-organic framework (Fl-Ph MOF: Fluorescent-Phosphorescent Metal-Organic Frameworks) containing a dual-emitting material of fluorescent and phosphorescent, and camouflage information associated with the actual information is printed using camouflage ink containing a metal-organic framework (Fl-MOF: Fluorescent Metal-Organic Frameworks) containing only a fluorescent material, thereby printing encrypted information in which the actual information and camouflage information are combined.

[0049] In FIG. 2, the actual information "N" is printed with a cryptographic ink consisting of a polymer solution (Fl-Ph MOF) containing a dual-luminescent material for fluorescence and luminescence, and the camouflage information, which is a stroke that makes "N" associated with the actual information "N" appear as "W", is printed with a polymer camouflage ink (Fl-MOF) mixed only with a fluorescent material, so that the actual information "N" cannot be identified and the encrypted information "W" is printed.

[0050] Hereinafter, with reference to FIG. 3, an example of actually applying the above-described principle will be explained. FIG. 3 is an illustrative diagram for explaining the principles of encryption and decryption according to a two-dimensional security method using a dual light-emitting material according to a preferred embodiment of the present invention.

[0051] Referring to Fig. 3(A), the actual information, "NANOPOLYMER," is combined with camouflage information to create encrypted information, "WAMQRQEYMBB." That is, the actual information, "NANOPOLYMER," is printed with an encrypted ink containing a fluorescent-phosphorescent metal-organic framework (Fl-Ph MOF), and the remaining camouflage information portion of "WAMQRQEYMBB," excluding the actual information, is printed with a fluorescent metal-organic framework (Fl-MOF) camouflage ink.

[0052] According to one aspect of the present invention, a dual-luminescent material may be provided comprising a porous framework comprising a metal ion and an organic ligand, an insert disposed in a cavity of the porous framework, and a nanocrystal comprising the metal ion of the porous framework. Herein, the organic ligand may be configured to emit room temperature organic phosphorescence (RT-OP), and the nanocrystal may be configured to emit fluorescence.

[0053] As a result, encrypted information mixed with disguise information and encryption information is printed as shown in Fig. 3(A).

[0054] In this embodiment, meaningless character combinations are described for convenience, but in other embodiments, encrypted information may be formed by including disguising information with meaningful character combinations to lure suspected thieves other than the user into other information.

[0055] Returning to Figure 2, we will explain the decoding process.

[0056] According to a two-dimensional security method using a dual-luminescent material according to a preferred embodiment of the present invention, when ultraviolet light is irradiated (UV on), the entire "W", which is encrypted information mixed with camouflage information and actual information, appears as bright green fluorescence as shown in FIG. 2.

[0057] Subsequently, when UV irradiation is stopped (UV Off), the camouflage information printed with camouflage ink containing a fluorescent metal-organic framework (Fl MOF) immediately disappears, whereas the actual information "N" printed with encryption ink containing a fluorescent-phosphorescent metal-organic framework (Fl-Ph MOF) is displayed in blue phosphorescence.

[0058] As illustrated in Fig. 3(B), the encrypted information "WAMQRQEYMBB" printed with two types of ink, encryption ink and camouflage ink, is barely visible when written on a white substrate under daylight.

[0059] On the other hand, as illustrated in Fig. 3(C), when UV light is irradiated (UV On) on the encrypted information, the characters become clear with bright green fluorescence. At this time, instead of the actual information "NANOPOLYMER," the encrypted Foshua pattern characters "WAMQRQEYMBB" are visible.

[0060] Subsequently, as shown in Fig. 3(D), when the UV light is turned off (UV Off), the actual information in the form of "NANOPOLYMER" can be clearly seen as blue organic phosphorescence (RT-OP: room-temperature organic phosphorescence) emitted from the area printed with the coding ink containing a fluorescent-phosphorescent metal-organic framework (Fl-Ph MOF).

[0061] Meanwhile, as shown in Fig. 4, which illustrates the experimental results of decoding results by wavelength of ultraviolet light applied to a two-dimensional security method using a dual-luminescent material according to a preferred embodiment of the present invention, when the encrypted information is exposed to UV light of higher wavelengths such as 254, 306, 365, and 400 nm, only the encrypted information is visible as a characteristic green fluorescence, and the actual information does not appear even after the UV light is turned off. Therefore, it is preferable to use a UV lamp with a wavelength of 254 nm or lower.

[0062] As described above, according to a two-dimensional security method using a dual-luminescent material according to a preferred embodiment of the present invention, the decay behavior of fluorescence and fluorescence-phosphorescence emission, having substantially different decay times of several nanoseconds and several seconds, respectively, can be useful for information encryption. That is, two types of optical information generated based on fluorescence and fluorescence-phosphorescence can be read independently on different time scales.

[0063] Accordingly, according to a two-dimensional security method using a dual-luminescent material according to a preferred embodiment of the present invention, actual information that emits dual light through fluorescent-phosphorescence can be concealed behind encrypted information that is entirely displayed as fluorescent, and furthermore, security can be enhanced by luring people into encrypted information different from the actual information through disguised information.

[0065] (Example 2: Method for manufacturing a dual-luminescent encryption cube)

[0066] Hereinafter, a method for manufacturing a dual-luminescent encryption cube according to a preferred embodiment of the present invention will be described.

[0067] In this embodiment, a fluorescent filament is prepared using a polymer composite material containing a fluorescent metal-organic framework (Fl MOF) in a polycaprolactone (PCL) solution, and a fluorescent-phosphorescent filament is prepared using a polymer composite material containing a fluorescent-phosphorescent metal-organic framework (Fl-Ph MOF) in a PCL solution.

[0068] For example, as shown in FIG. 5a, MOF powder (0.096 g) and PCL polymer pulp (0.2 g) were dispersed in toluene (0.8 g). The PCL was completely dissolved in toluene.

[0069] Fluorescent metal-organic frameworks (Fl MOFs) can be used, for example, lead (Pb)-containing metal-organic frameworks (MOFs), but other fluorescent materials may also be used.

[0070] Meanwhile, in a preferred embodiment of the present invention, the fluorescent-phosphorescent metal-organic framework (Fl-Ph MOF) is based on a lead (Pb)-containing metal-organic framework (MOF) having trimesic acid (TMA) organic ligands. When cyanuric acid (CA) molecules are included as guests in the periodic cavities of the lead (Pb)-containing metal-organic framework (MOF), both trimesic acid (TMA) and cyanuric acid (CA) are efficiently immobilized at a distance suitable for dexter energy transfer under ambient conditions, thereby inducing stable deep blue room-temperature organic phosphorescence (RT-OP). When methyl ammonium bromide (MABr), a perovskite precursor, is mixed with a lead (Pb)-containing metal-organic framework (MOF) combined with cyanuric acid (CA), fluorescent MAPbBr3 nanocrystals that exhibit characteristic green luminescence upon UV irradiation are generated in the MOF, creating a dual-emitting Fl-Ph.

[0071] Polymer composite materials containing fluorescent metal-organic frameworks (Fl MOF) and fluorescent-phosphorescent metal-organic frameworks (Fl-Ph MOF) prepared in this manner are each prepared by filling a pre-patterned polydimethylsiloxane (PDMS) mold as shown in Fig. 5b and then vacuum drying at room temperature.

[0072] A pre-patterned polydimethylsiloxane (PDMS) mold can be produced by curing polydimethylsiloxane (PDMS) with a curing agent in a weight ratio of 10:1 for 12 hours in an oven at 60°C, for example, and patterned with intaglio lines along the skeleton of cube branches on a fully cured PDMS plate.

[0073] A solution containing Fl MOF or Fl-Ph is poured onto the negative line pattern of the patterned PDMS mold, vacuum dried at room temperature for 3 hours to evaporate toluene, and then finally separated from the PDMS mold.

[0074] As a result, as shown in FIG. 5c, a plurality of fluorescent (Fl) cube branches and fluorescent-phosphorescent (Fl-Ph) cube branches are formed. The blue ones are fluorescent-phosphorescent (Fl-Ph) cube branches, and the red ones are fluorescent (Fl) cube branches.

[0075] These fluorescent-phosphorescent cube branches and fluorescent cube branches are placed at each corner of the cube according to a predetermined three-dimensional encryption pattern structure. For example, as illustrated in FIG. 6, which illustrates a three-dimensional encryption pattern structure according to a preferred embodiment of the present invention, fluorescent-phosphorescent (Fl-Ph) cube branches are placed on the information branches that form the actual information pattern according to a preset pattern based on letters, numbers, symbols, etc., and fluorescent (Fl) cube branches are placed on the camouflage branches that form the remaining camouflage pattern other than the actual information, thereby assembling a dual-emission encryption cube as illustrated in FIG. 7.

[0076] As a result, an encryption cube (100) consisting of 8 vertices (110) and 12 cube branches (120, 130) is created.

[0077] In the present invention, a method for manufacturing a cubic encryption cube as an encryption cube has been described, but as shown in FIG. 8, it can also be manufactured in other shapes as needed.

[0078] In addition, in another embodiment of the present invention, a vertex branch coupling member may be further included, which is made of a porous sphere having multiple closed holes formed at the vertices to which the cube branches are connected, in order to facilitate the coupling of the cube branches. That is, the vertex branch coupling member is made of a porous sphere having closed holes formed in three directions, such as the horizontal axis (x), the vertical axis (y), and the vertical axis (z) which is orthogonal to the plane formed by the horizontal and vertical axes, so that cube branches can be selectively coupled to each closed hole. By doing so, the assembly of the encryption cube according to the present invention is facilitated.

[0079] In addition, in another embodiment of the present invention, a coupling identifier may be marked on a vertex branch coupling member to facilitate the joining of cube branches. That is, by marking a coupling identifier on a vertex branch coupling member so that the corresponding coupling member is identified as the vertex number of the encryption cube, the encryption cube can be assembled accurately during assembly, and the vertex of the encryption cube can be accurately identified during decryption, thereby enabling the encryption cube to be set at the correct position and angle.

[0081] (Example 3: Dual-emitting encryption cube)

[0082] As illustrated in FIG. 7, a dual-luminescent encryption cube (100) according to a preferred embodiment of the present invention consists of 8 vertices (110) and 12 cube branches (120, 130).

[0083] For example, taking the pattern set as the alphabet "A" in Fig. 6 as an example, centered on vertex 1, six information branches forming the actual information pattern—1-2 cube branch, 2-3 cube branch, 3-4 cube branch, 4-1 cube branch, 4-8 cube branch, and 2-6 cube branch—are formed as fluorescent-phosphorescent (Fl-Ph) cube branches.

[0084] And, the 6 camouflage branches that make up the remaining cubes, which are not actual information, are formed as fluorescent (Fl) cube branches: 3-7 cube branches, 1-5 cube branches, 5-6 cube branches, 6-7 cube branches, 7-8 cube branches, and 8-5 cube branches.

[0085] As a result, as illustrated in FIG. 5c, when viewed from vertex 1, a three-dimensional security pattern is formed centered on vertex 1 (110), consisting of six outer branches forming a regular hexagon and six inner lines connecting the points where each outer branch meets and the vertices.

[0086] Subsequently, as illustrated in FIG. 5c, when UV light is shone on an encryption cube having a three-dimensional security pattern, all six outer branches and six inner branches emit green fluorescence. Then, when the UV light is stopped, the camouflage branches formed by fluorescent (Fl) cube branches stop emitting light, and only the information branches formed by fluorescent-phosphorescent (Fl-Ph) cube branches emit blue phosphorescence, so that only the actual information pattern is displayed in blue.

[0087] Based on the preset encryption pattern, it can be determined that the actual information is "A".

[0088] In addition, in another embodiment of the present invention, the vertex branch coupling member may be composed of a porous sphere having multiple closed holes formed at the vertices to which cube branches are connected. In this case, the vertex branch coupling member is composed of a porous sphere having closed holes formed in three directions, such as a horizontal axis (x), a vertical axis (y), and a vertical axis (z) orthogonal to the plane formed by the horizontal and vertical axes, thereby forming a structure in which cube branches are selectively connected to each closed hole.

[0089] In addition, a joint identifier can be displayed on the vertex branch joint.

[0090] As a result, the encryption cube can be set at the correct position and angle according to the 3D encryption pattern, and the position and angle of the encryption cube can be accurately read even when decrypting the 3D encryption pattern.

[0092] (Example 4: Three-dimensional security method using a dual-luminescent cube)

[0093] A three-dimensional security method using a dual-luminescent cube according to a preferred embodiment of the present invention comprises an encryption process and a decryption process.

[0094] First, referring to FIG. 5c, the encryption cube according to the present invention consists of a plurality of fluorescent (Fl) cube branches and fluorescent-phosphorescent (Fl-Ph) cube branches. Blue is a fluorescent-phosphorescent (Fl-Ph) cube branch, and red is a fluorescent (Fl) cube branch.

[0095] As shown in FIG. 6, fluorescent-phosphorescent (Fl-Ph) cube branches are placed in the information branches that form the actual information pattern according to a preset pattern based on letters, numbers, symbols, etc., and fluorescent (Fl) cube branches are placed in the camouflage branches that form the remaining camouflage pattern other than the actual information, thereby assembling a dual-emitting encryption cube as shown in FIG. 7.

[0096] As a result, an encryption cube (100) consisting of 8 vertices (110) and 12 cube branches (120, 130) is created.

[0097] For example, a user's password is set according to a three-dimensional encryption pattern established between a user terminal, such as a mobile phone, and a security device. Hereinafter, the terms user terminal and mobile phone will be used interchangeably as synonyms.

[0098] In this embodiment, an example is given in which "NP" is set as a user password using two encryption cubes. Depending on the system design, encryption cubes can be designed with a number of digits ranging from one digit to various digits.

[0099] First, the user registers for security with the relevant system in order to use various systems, such as banks, securities firms, and paid information providers. At this time, the user's password can be registered by receiving pre-configured 3D encryption pattern information from the security system, as illustrated in FIG. 6. From a security perspective, it would be more desirable to prepare multiple 3D encryption patterns and provide different 3D encryption pattern information for each user. This encryption registration can be done online or offline, and the user can receive encryption cubes used in the security device from the security system. At this time, a set of encryption cubes may be provided, or two sets may be provided: one encryption cube with a 3D encryption pattern of "N" corresponding to the password "NP" encrypted by the user, and another encryption cube with a 3D encryption pattern of "P" registered. Of course, the number of encryption cubes may vary depending on the number of passwords registered by the user, that is, the number of passwords registered with the security system.

[0100] Afterwards, when the user activates the application to access the security system online, the security system of the application requests password input, such as a “shooting key,” as shown in FIG. 9.

[0101] As shown in FIG. 10, the user adjusts the position and angle of the encryption cube according to the 3D encryption pattern, arranges the encryption cubes in order at the correct position and angle, and then turns on the UV lamp to irradiate with ultraviolet light for a certain period of time, for example, 3 seconds. As a result, as shown in FIG. 11, all 12 cube branches of the cubic 3D encryption pattern emit green fluorescence.

[0102] Subsequently, when the user turns off the ultraviolet lamp, only the actual information of the NP, that is, the information forming the "NP" corresponding to the user password, emits blue phosphorescence, as shown in FIG. 11. As shown at the bottom of FIG. 10, if the arrangement is different or in the case of a different cube, a different three-dimensional encryption pattern is displayed.

[0103] In this state, with the user's mobile phone activated by the camera activation button linked to the security system's "shooting key," an encryption cube in which actual information emits phosphorescence is photographed and transmitted to the security system. At this time, the captured information may be provided as binary information, for example, where information is represented as "1" and disguised information is represented as "0".

[0104] As illustrated in Fig. 9, the security system performs a comparison of registered encryption patterns, and a matching rate is calculated based on the matching rate. At this time, the matching is not performed only for the information branch, that is, the information branch "1" which emits phosphorescence, but also for the camouflage information "0" which does not emit phosphorescence.

[0105] And, the matching rate is calculated based on the degree of agreement resulting from the comparison. For example, the matching rate can be calculated as a score by converting it to 1 point for a match and 0 points for a mismatch.

[0106] If the matching rate calculated in this way is greater than or equal to a preset value, the security is unlocked as a successful match, and if the result of the calculated matching rate is less than a preset value, the application displayed on the user terminal, i.e., the mobile phone, is displayed as a failed match.

[0107] According to the three-dimensional security method using a dual-luminescent encryption cube according to the present invention described above, as illustrated in FIG. 12, six patterns are possible at an angle of 60 degrees for each of the eight vertices. That is, 48 ​​patterns are possible for each encryption cube. In addition, two probabilities are included based on binary 1s and 0s. Accordingly, the number of encryption cases increases astronomically depending on the number of encryption cubes, so that it takes more than 200 years to crack the system, even based on existing high-performance computers. Therefore, according to the three-dimensional security method using a dual-luminescent encryption cube according to the present invention described above, a significantly improved security effect compared to existing methods can be obtained.

[0109] The present invention is not limited to the appended claims and their equivalents. With respect to the various functions performed by the aforementioned components or structures (assemblies, devices, circuits, systems, etc.), the terms used to describe such components (including references to “means”) are intended to correspond to any component or structure that performs (i.e., is functionally equivalent to) the specific function of the described component, even if it is not structurally identical to the disclosed structure performing the function in the exemplary embodiments of the invention illustrated herein, unless otherwise indicated.

[0110] Additionally, the following claims are incorporated into the detailed description, and each claim may exist independently as a separate exemplary embodiment. While each claim may exist independently as a separate exemplary embodiment, it should be noted that other exemplary embodiments may also include combinations of dependent or independent claims and dependent claims. Such combinations are proposed herein unless it is stated that a specific combination is not intended. Furthermore, even if this claim is not directly dependent on an independent claim, it is intended to include features of the claim for any other independent claim.

[0111] It should be noted that the methods disclosed in this specification or claims may be implemented by a device having means for performing each of the operations of these methods.

[0112] Furthermore, it should be understood that the disclosure of multiple actions or functions disclosed in the specification or claims may not be interpreted as being in a specific order. Therefore, the disclosure of multiple actions or functions will not limit them to a specific order unless such actions or functions are interchangeable for technical reasons. Additionally, in some embodiments, a single action may include multiple sub-actions or be divided into multiple sub-actions. Unless explicitly excluded, such sub-actions may be included and may be part of the disclosure of this single action.

[0113] Instructions may be executed by one or more processors, such as one or more central processing units (CPUs), digital signal processors (DSPs), general-purpose microprocessors, application-specific integrated circuits (ASICs), field programmable logic arrays (FPGAs), or other equivalent integrated or discrete logic circuits. Accordingly, the term "processor" as used herein refers to any of the structures described above or any other structure suitable for the implementation of the technology described herein. Furthermore, in some embodiments, the functions described herein may be provided within dedicated hardware and / or software modules. Additionally, the technology may be fully implemented in one or more circuits or logic elements.

[0114] Accordingly, the technology described in this disclosure may be implemented at least partially in hardware, software, firmware, or any combination thereof. For example, various aspects of the technology described may be implemented in one or more processors comprising one or more microprocessors, DSPs, ASICs, or any other equivalent integrated or discrete logic circuits, as well as any combination of these elements.

[0115] A control unit including hardware may also perform one or more of the techniques described in this disclosure. Such hardware, software, and firmware may be implemented in the same device or in separate devices to support the various techniques described in this disclosure. Software may be stored on a non-transient computer-readable medium such that the non-transient computer-readable medium includes program code or program algorithm stored thereon, and the program code or program algorithm causes a computer program to perform steps of a method when executed.

[0116] Although various exemplary embodiments have been disclosed, it will be apparent to those skilled in the art that various modifications and variations may be made to achieve some of the benefits of the concepts disclosed herein without departing from the spirit and scope of the invention. It will be apparent to those skilled in the art that other components performing the same function may be appropriately substituted. It should be understood that other embodiments may be used and that structural or logical modifications may be made without departing from the scope of the invention. It should be noted that features described with reference to specific drawings may be combined with features of other drawings, even in features not explicitly mentioned. Such modifications to the general concept of the invention are intended to be covered by the appended claims and their legal equivalents.

[0117] The order of the steps described above is merely an example and is not limited thereto. That is, the order of the steps described above may vary, and some of these steps may be executed simultaneously or deleted.

[0118] The foregoing description of the present invention is for illustrative purposes only, and those skilled in the art will understand that other specific forms can be easily modified without altering the technical spirit or essential features of the present invention. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. For example, each component described as a single unit may be implemented in a distributed manner, and components described as distributed may likewise be implemented in a combined form.

[0119] The scope of the present invention is defined by the claims set forth below rather than by the detailed description above, and all modifications or variations derived from the meaning and scope of the claims and equivalent concepts thereof should be interpreted as being included within the scope of the present invention. Explanation of the symbols

[0121] 100 : Encryption Cube 110 : Vertex 120 : Information branches 130 : Stomach branch Fl MOF: Fluorescent metal-organic framework Fl-Ph MOF: Fluorescent-Phosphorescent Organic Framework

Claims

Claim 1 delete Claim 2 A dual-luminescent encryption cube having a three-dimensional encryption pattern by dual luminescence and luminescence, comprising eight vertices of a cube and twelve cube branches connecting each of the eight vertices, wherein, according to a preset three-dimensional encryption pattern, the information branches of the encryption cube included in the three-dimensional encryption pattern are made of fluorescent-phosphorescent filaments, and the camouflage branches of the encryption cube not included in the three-dimensional encryption pattern are made of fluorescent filaments, and wherein the information branches and camouflage branches are arranged in either of six outer branches forming a cube centered on the vertices, or six inner branches connected to the vertices centered on each of the contact points of the six outer branches. Claim 3 In claim 2, the vertex further comprises a vertex branch coupling member formed of a porous sphere having a plurality of closed holes to which the cube branches are connected, wherein the porous sphere is formed with closed holes formed in three directions, such as a horizontal axis (x), a vertical axis (y), and a vertical axis (z) orthogonal to the plane formed by the horizontal axis and the vertical axis, and is characterized in that cube branches are selectively coupled to each closed hole according to the three-dimensional encryption pattern. Claim 4 A dual-luminous encryption cube according to claim 3, characterized in that the vertex branch coupling member displays a vertex branch coupling member identifier capable of identifying the vertex branch coupling member. Claim 5 A method for manufacturing a dual-emitting type encryption cube capable of dual fluorescence and phosphorescence, comprising the steps of: mixing a fluorescent emitting material in a polymer solvent to form a fluorescent solution; mixing a fluorescent-phosphorescent dual-emitting material in a polymer solvent to form a fluorescent-phosphorescent solution; filling the fluorescent solution and the fluorescent-phosphorescent solution into the intaglio patterns of separate patterned molds; drying the fluorescent solution and the fluorescent-phosphorescent solution filled in the molds at room temperature to form a fluorescent filament and a fluorescent-phosphorescent filament, respectively; cutting the fluorescent filament and the fluorescent-phosphorescent filament to match the length of the cube branches of a preset encryption cube; and, according to a preset three-dimensional encryption pattern, assembling the information branches of the encryption cube included in the three-dimensional encryption pattern with the fluorescent-phosphorescent filaments, and assembling the disguised branches of the encryption cube not included in the three-dimensional encryption pattern with the fluorescent filaments. Claim 6 In a three-dimensional security method using a dual-emitting type encryption cube patterned in three dimensions using a fluorescent emitting material and a fluorescent-phosphorescent dual-emitting material, the encryption cube is formed by assembling cube branches with a fluorescent-phosphorescent emitting material on the information branches of the encryption cube forming the three-dimensional encryption pattern according to a preset three-dimensional encryption pattern, and assembling cube branches with a fluorescent emitting material on the camouflage branches of the encryption cube not included in the three-dimensional encryption pattern, thereby generating a patterned encryption cube; the three-dimensional security method comprises an encryption setting process of setting a user's password according to a three-dimensional encryption pattern set between a user terminal and a security device, and a process of inputting a user password at the user terminal, wherein encryption cubes corresponding to the user password are arranged in order among the preset patterned encryption cubes, and information branches and camouflage branches are placed at accurate positions centered on vertices according to the encryption pattern of each patterned encryption cube; a step of irradiating ultraviolet light for a preset time onto the encryption cubes arranged in order according to the user password; a step of photographing the encryption cubes arranged in order according to the encryption information after stopping the irradiation of the ultraviolet light; and each of the photographed encryption A user password input process comprising the steps of generating password input information by binarizing the information branches and disguise branches of a cube, and transmitting the generated password input information to the security device; and, in the security device, a process for decrypting the entered user password, comprising the steps of generating a three-dimensional encryption pattern of an encryption cube in sequence based on the binarized information of the user password received from the user terminal, comparing the pattern of the user password registered in the encryption setting process with the generated three-dimensional encryption pattern of the encryption cube to calculate a matching rate, and if the matching rate is greater than or equal to a preset value, unlocking security as a successful match and providing information.A three-dimensional security method using a dual-luminescent cube, comprising a user password decryption process that transmits a matching failure notification if the above-mentioned matching rate is less than a preset value. Claim 7 A three-dimensional security method using a dual-emitting type cube, wherein, in claim 6, the fluorescent-phosphorescent dual-emitting material emitting fluorescent and phosphorescent dual light is based on a lead (Pb)-containing metal-organic framework (MOF) having trimesic acid (TMA) organic ligands, and the ultraviolet light uses a UV lamp with a wavelength of 254 nm or less.

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