A fingerprint encryption method based on a fusion feature descriptor

A feature descriptor and fusion feature technology, applied in the direction of digital data protection, digital data authentication, etc., can solve the problems of damage calculation, number and accuracy need to be improved, recognition accuracy and security strength are insufficient, and achieve the goal of overcoming negative effects Effect

Pending Publication Date: 2019-05-07
XIDIAN UNIV
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Problems solved by technology

The number of detail points and the accuracy of the final matching still need to be improved
[0005] (2) Existing technology 3, fingerprint deformation and the absence of a single real minutiae have a great impact on the matching accuracy of the encrypted domain, which is specifically reflected in the structure based on minutia, which will cause destructive calculations due to the lack of a s

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  • A fingerprint encryption method based on a fusion feature descriptor
  • A fingerprint encryption method based on a fusion feature descriptor
  • A fingerprint encryption method based on a fusion feature descriptor

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[0055] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

[0056] For feature descriptors based on pre-registration and rotation and translation parameters, there are still major deficiencies in encryption domain matching. The number of minutiae points and accuracy in the final matching still need to be improved; encryption domain matching based on local structure, fingerprint deformation and The lack of a single real detail point has a greater impact on the matching accuracy of the encryption domain. The invention uses fingerprint images to extract reliable auxiliary data, realizes accurate matching of fingerprint encryption algorithms, ensures the performance of the fingerprin...

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Abstract

The invention belongs to the technical field of fingerprint encryption fusion in information security and mode recognition, and discloses a fingerprint encryption method based on a fusion feature descriptor. The method comprises: firstly, constructing a registration-free feature descripto, wherein the descriptor is composed of three parts, namely a fingerprint detail point direction field featuredescriptor, a fingerprint detail point local structure descriptor and a ridge line counting feature descriptor; Then storing the descriptor into Helper Data for encryption domain matching of a fingerprint encryption algorithm; Binding the fingerprint feature information with a secret key by using a Fuzy Valert algorithm, and adding a hash point to generate a Valert; And when the user needs to carry out verification, calculating a matching score between the query fingerprint and the Helper Data generated by the registration fingerprint, carrying out encryption domain matching with the registration fingerprint, and finishing a fingerprint encryption and decryption process. According to the invention, the traditional error caused by inaccurate registration is avoided, and the matching precision of the fingerprint encryption technology is improved.

Description

technical field [0001] The invention belongs to the technical field of fingerprint encryption fusion in information security and pattern recognition, and in particular relates to a fingerprint encryption method based on fusion feature descriptors. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: biometric encryption technology aims to organically integrate biometric identification and encryption technology, give full play to the advantages of each technology, reduce the pressure on key management, and provide stronger security for private information protection and control. Fingerprint encryption technology is the complementary of fingerprint identification technology and encryption technology. Its principle is to fuse fingerprint information and key information together securely. This technology takes into account the fuzziness of fingerprint identification and the accuracy of encryption technology, ensuring t...

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Application Information

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IPC IPC(8): G06F21/60G06F21/32
CPCY02D30/50
Inventor 赵恒丁红霞庞辽军曹志诚石悦
Owner XIDIAN UNIV
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