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1. 发明申请

US20190342102A1 AUTHENITICATION OF PHYSICAL OBJECT USING INTERNAL STRUCTURE 审中-公开
公开(公告)号：US20190342102A1
公开(公告)日：2019-11-07
申请号：US15972922
申请日：2018-05-07
申请人： University of Newcastle Upon Tyne
发明人： Feng Hao , Ehsan Toreini , Siamak F. Shahandashti
IPC分类号： H04L9/32 , G06K9/00 , H04L9/08 , G09C5/00
摘要： A method for preventing counterfeiting of an object (e.g. paper) is described. The method comprises capturing an image of at least a portion of the object, wherein the portion of the object whose image is captured is at least partially transparent, and wherein the captured image includes features of the internal structure of the object (e.g. the texture of the paper resulting from the arrangement of fibres from which the paper is made). The method further comprises generating, based on the image, a code that encodes features of the internal structure of the object, and recording the code. Generating the code may comprise applying a filter to the image to obtain a filtered image, and processing the filtered image to obtain a binary code. The filter may be a Gabor filter, and processing the filtered image may comprise applying a Gray code to the filtered image. The method may further comprise encrypting the binary code, and recording the code may comprise recording the encrypted binary code. A method for authenticating an object is also described. The method comprises capturing an image of at least a portion of the object, wherein the portion of the object whose image is captured is at least partially transparent, and wherein the captured image includes features of the internal structure of the object. The method further comprises generating, based on the image, a code that encodes features of the internal structure of the object, reading one or more reference values comprising at least a reference code, and authenticating the object based on the code and the reference code.

2. 发明授权

US10841098B2 Authentication of physical object using internal structure 有权
公开(公告)号：US10841098B2
公开(公告)日：2020-11-17
申请号：US16860698
申请日：2020-04-28
申请人： University of Newcastle Upon Tyne
发明人： Feng Hao , Ehsan Toreini , Siamak F. Shahandashti
IPC分类号： H04L29/06 , H04L9/32 , G06K9/00 , G09C5/00 , H04L9/08
CPC分类号： H04L9/3242 , G06K9/00577 , G09C5/00 , H04L9/0869 , H04L9/3247
摘要： A method for preventing counterfeiting of an object includes capturing an image of at least a portion of the object that is at least partially transparent. The captured image includes features of the internal structure of the object. Based on the image, a code is generated that encodes features of the internal structure of the object. The code is recorded. Generating the code includes applying a filter to the image to obtain a filtered image, and processing the filtered image to obtain a binary code. A random key, k, is generated, and a codeword fp is obtained by applying an error-correction encoding scheme, ErrorCC, to the random key according to fp=ErrorCC(k), wherein fp has the same size as the binary code fa. An encrypted binary code, r, is computed according r=fa⊕fp, where ⊕ denotes modulo-2 addition. A hash value, h, is computed according to h=H(k), where H is a one-way hash function. Recording the code comprises recording the encrypted binary code r and the hash value h. A digital signature, s, is computed based on r and h, wherein recording the code comprises recording the digital signature, s.

3. 发明授权

US10680825B2 Authentication of physical object using internal structure 有权
公开(公告)号：US10680825B2
公开(公告)日：2020-06-09
申请号：US15972922
申请日：2018-05-07
申请人： University of Newcastle Upon Tyne
发明人： Feng Hao , Ehsan Toreini , Siamak F. Shahandashti
IPC分类号： H04L29/06 , H04L9/32 , G06K9/00 , G09C5/00 , H04L9/08
摘要： A method for preventing counterfeiting of an object (e.g. paper) is described. The method comprises capturing an image of at least a portion of the object, wherein the portion of the object whose image is captured is at least partially transparent, and wherein the captured image includes features of the internal structure of the object (e.g. the texture of the paper resulting from the arrangement of fibres from which the paper is made). The method further comprises generating, based on the image, a code that encodes features of the internal structure of the object, and recording the code. Generating the code may comprise applying a filter to the image to obtain a filtered image, and processing the filtered image to obtain a binary code. The filter may be a Gabor filter, and processing the filtered image may comprise applying a Gray code to the filtered image. The method may further comprise encrypting the binary code, and recording the code may comprise recording the encrypted binary code. A method for authenticating an object is also described. The method comprises capturing an image of at least a portion of the object, wherein the portion of the object whose image is captured is at least partially transparent, and wherein the captured image includes features of the internal structure of the object. The method further comprises generating, based on the image, a code that encodes features of the internal structure of the object, reading one or more reference values comprising at least a reference code, and authenticating the object based on the code and the reference code.

4. 发明申请

US20200259662A1 AUTHENTICATION OF PHYSICAL OBJECT USING INTERNAL STRUCTURE 审中-公开
公开(公告)号：US20200259662A1
公开(公告)日：2020-08-13
申请号：US16860698
申请日：2020-04-28
申请人： University of Newcastle Upon Tyne
发明人： Feng Hao , Ehsan Toreini , Siamak F. Shahandashti
IPC分类号： H04L9/32 , H04L9/08 , G09C5/00 , G06K9/00
摘要： A method for preventing counterfeiting of an object includes capturing an image of at least a portion of the object that is at least partially transparent. The captured image includes features of the internal structure of the object. Based on the image, a code is generated that encodes features of the internal structure of the object. The code is recorded. Generating the code includes applying a filter to the image to obtain a filtered image, and processing the filtered image to obtain a binary code. A random key, k, is generated, and a codeword fp is obtained by applying an error-correction encoding scheme, ErrorCC, to the random key according to fp=ErrorCC(k), wherein fp has the same size as the binary code fa. An encrypted binary code, r, is computed according r=fa⊕fp, where ⊕ denotes modulo-2 addition. A hash value, h, is computed according to h=H(k), where H is a one-way hash function. Recording the code comprises recording the encrypted binary code r and the hash value h. A digital signature, s, is computed based on r and h, wherein recording the code comprises recording the digital signature, s.

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