Fingerprint decryption method and device

Patent metadata

Field	Value
Publication number	US-10146983-B2
Application number	US-201615383036-A
Country	US
Kind code	B2
Filing date	Dec 19, 2016
Priority date	Oct 20, 2014
Publication date	Dec 4, 2018
Grant date	Dec 4, 2018

Abstract

The present disclosure is applicable to the technical field of fingerprint identification, and provides a fingerprint decryption method and device. The method includes the following steps: receiving N input fingerprints, N being an integer greater than or equal to 2; and decrypting a to-be-decrypted object according to the N input fingerprints, the to-be-decrypted object being encrypted by using N preset fingerprints. According to the present disclosure, the to-be-decrypted object is decrypted by using an input fingerprint combination of two or more fingerprints, which improves data security of the mobile terminal.

First claim

What is claimed is:

1. A fingerprint decryption method, comprising:
receiving N input fingerprints, N being an integer greater than or equal to 2;
determining whether a total input time duration of the N input fingerprints is less than or equal to a first predetermined threshold;
if the total input time duration of the N input fingerprints is greater than the first predetermined threshold, determining input fingerprints after the first predetermined threshold do not pertain to the current decryption and the current decryption is not successful; and
if the total input time duration of the N input fingerprints is less than or equal to the first predetermined threshold, decrypting a to-be-decrypted object according to the N input fingerprints, wherein the to-be-decrypted object is encrypted by using N preset fingerprints;
wherein the N preset fingerprints are partially or totally same, the number of same preset fingerprints is set instead of setting the same preset fingerprints repeatedly; and
wherein the N input fingerprints are partially or totally same.

2. The method according to claim 1 , wherein an input time interval of the received N fingerprints is less than or equal to a second predetermined threshold.

3. The method according to claim 1 , wherein the decrypting a to-be-decrypted object according to the N input fingerprints comprises:
comparing the N input fingerprints with the N preset fingerprints; and
decrypting the to-be-decrypted object when the N input fingerprints respectively match with the N preset fingerprints.

4. The method according to claim 3 , wherein
the comparing the N input fingerprints with the N preset fingerprints comprises:
successively comparing the N input fingerprints with the N preset fingerprints in a one-by-one manner; and
wherein the N input fingerprints respectively matching with the N input fingerprints specifically refers to:
the N input fingerprints respectively match with the N preset fingerprints and an input sequence of the N input fingerprints is also in accordance with a specific sequence of the N preset fingerprints.

5. A mobile terminal, comprising:
a fingerprint sensor, configured to receive N input fingerprints, N being an integer greater than or equal to 2; and
a fingerprint decryption device coupled with the fingerprint sensor, configured to determine whether a total input time duration of the N input fingerprints is less than or equal to a first predetermined threshold; if the total input time duration of the N input fingerprints is greater than the first predetermined threshold, determine input fingerprints after the first predetermined threshold do not pertain to the current decryption and the current decryption is not successful; and if the total input time duration of the N input fingerprints is less than or equal to the first predetermined threshold decrypt a to-be-decrypted object according to the N input fingerprints, the to-be-decrypted object being encrypted by using the N preset fingerprints;
wherein the N preset fingerprints are partially or totally same, the number of same preset fingerprints is set instead of setting the same preset fingerprints repeatedly;
wherein the N input fingerprints are partially or totally same.

6. The mobile terminal according to claim 5 , wherein an input time interval of the N input fingerprints is less than or equal to a second predetermined threshold.

7. The mobile terminal according to claim 5 , wherein the fingerprint decryption device is configured to compare the N input fingerprints with the N preset fingerprints; and decrypt the to-be-decrypted object when the N input fingerprints respectively match with the N preset fingerprints.

8. The mobile terminal according to claim 7 , wherein the fingerprint decryption device is configured to successively compare the N input fingerprints with the N preset fingerprints in a one-by-one manner; and
wherein the N input fingerprints respectively matching with the N preset fingerprints specifically refers to: the N input fingerprints respectively match with the N preset fingerprints and an input sequence of the N input fingerprints is also in accordance with a specific sequence of the N preset fingerprints.

Assignees

• Shenzhen Goodix Tech Co Ltd

Inventors

• Hao Qiyi

Classifications

• H04L9/0866 Primary

  involving user or device identifiers, e.g. serial number, physical or biometrical information, DNA, hand-signature or measurable physical characteristics · CPC title

• G06V10/75

  Organisation of the matching processes, e.g. simultaneous or sequential comparisons of image or video features; Coarse-fine approaches, e.g. multi-scale approaches; using context analysis; Selection of dictionaries · CPC title

• H04L9/14

  using a plurality of keys or algorithms · CPC title

• H04L9/3231

  Biological data, e.g. fingerprint, voice or retina (network architectures or network communication protocols for supporting authentication of entities using biometrical features in a packet data network H04L63/0861) · CPC title

• G06K9/00013 Primary

  Physics · mapped topic