Fingerprint characteristic value encrypting/decrypting method and system

Abstract

The invention relates to a fingerprint eigenvalue encryption-decryption system which comprises a fingerprint sensor, a nonvolatile store and a fingerprint encryption-decryption chip. The fingerprint encryption-decryption chip comprises a special interface of the fingerprint sensor, a fingerprint matching module, a fingerprint eigenvalue extracting module, a special channel of the fingerprint matching and the fingerprint eigenvalue extracting, a bus interface of the fingerprint eigenvalue extracting module, a fingerprint comparing module, a bus interface of the fingerprint comparing module, an interface of the nonvolatile store, a controller, a bus interface of the controller, a communication port, an internal bus. The fingerprint encryption-decryption chip also comprises an encryption-decryption module, a one time programmable program store, a bus interface of the encryption-decryption module and a bus interface of the one time programmable program store. The invention can improve the safety of the fingerprint eigenvalue and enhancing the safety level. The integration of the fingerprint eigenvalue extracting, the fingerprint comparing and the encryption-decryption reduces the cost of the system; the system solves the safety problem of remote transmission of the fingerprint eigenvalue, thus leading a fingerprint database to be easily centralized and conveniently managed and searched.

Description

technical field [0001] The invention relates to the field of information security, in particular to a fingerprint feature value encryption and decryption method and system. Background technique [0002] As a kind of biometric identification, fingerprint identification is more and more mature and widely used. Fingerprint identification products will be applied to various fields, and fingerprint identification technology will also be mastered by various application manufacturers, and the source of comparison results in fingerprint identification technology is the fingerprint feature value rather than the fingerprint itself. Therefore, the fingerprint feature value will also be stored or transmitted by various products in different fields. The traditional storage and transmission processing method of fingerprint feature value is: directly or simply process the fingerprint feature value generated after fingerprint identification and fingerprint processing to store or transmit, ...

AI Technical Summary

Problems solved by technology

[0003] The local or remote storage and transmission of fingerprint feature values ​​are insecure and easy to leak;

[0004] Fingerprint products and manufacturers are very different, and there is no guarantee that fingerprint feature values ​​will not be illegally misappropriated by unscrupulous manufacturers when storing and transmitting;

[0005] A lot of waste of local storage media of fingerprint feature values ​​caused by a large number of fingerprint identification products

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