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US 12,615,142 B2Granted
PUF ID and PUF ID reader
AssigneeGwangju Institute of Science and Technology
InventorsYoung Min Song, Min Seok Kim, Gil Ju Lee
Life of this patent
Estimating the term…
Abstract
A physically unclonable function (PUF) identifier (ID) includes a random fibrous medium and a frame configured to support the random fibrous medium. According to the present disclosure, it is possible to implement a PUF ID that is inexpensive and excellent in encryption performance, and PUF ID reader that reads the PUF ID.
Claims8
A physically unclonable function (PUF) identifier (ID) reader comprising:
- a PUF ID comprising:
- a fibrous medium having a two-dimensional surface in which a plurality of fibers is entangled;
- and
- a frame configured to support the fibrous medium;
- and
- a light source configured to project incoherent light through the two-dimensional surface of the supported fibrous medium of the PUF ID;
- and
- an image sensor having a directly vertically aligned surface with respect to the two-dimensional surface of the supported fibrous medium, and configured to sense the projected incoherent light through the PUF ID onto the directly vertically aligned surface by obtaining digital data of the projected incoherent light on the directly vertically aligned surface through image processing,
- wherein, when projecting the incoherent light through the two-dimensional surface of the fibrous medium, a two-dimensionally projected area on the directly vertically aligned surface includes a first portion on which the fibers are projected and a second portion on which the fibers are not projected,
- wherein the fibers are opaque,
- wherein the fibrous medium is a cocoon film peeled from a surface of a cocoon, and
- wherein a proportion of the first portion made by the cocoon film is 70-90%.
9 more elements
A physically unclonable function (PUF) identifier (ID) reader comprising:
- a PUF ID including a two-dimensional fibrous medium having a planar surface in which fibers are entangled;
- a light source configured to project incoherent light through the planar surface of the two-dimensional fibrous medium of the PUF ID;
- and
- an image sensor having a directly vertically aligned surface with respect to the planar surface of the two-dimensional fibrous medium, and configured to sense the projected incoherent light through the PUF ID onto the directly vertically aligned surface by obtaining digital data of the projected incoherent light on the directly vertically aligned surface through image processing,
- wherein, when projecting the incoherent light through the planar surface of the fibrous medium, a two-dimensionally projected area on the directly vertically aligned surface includes a first portion in which the light meets the fibers and a second portion in which the light does not meet the fibers,
- wherein at least a part of the second portion is defined as an inner region of a closed curve bordering on the fibers,
- wherein the fibrous medium includes at least a cocoon film peeled from a surface of a cocoon, and
- wherein a proportion of the first portion made by the cocoon film is 70-90%.
5 more elements
Dependencies are inferred from the claim text.