CN112699358B - Application method of password safety protection device based on fingerprint sensor - Google Patents
Application method of password safety protection device based on fingerprint sensor Download PDFInfo
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- CN112699358B CN112699358B CN202011642487.5A CN202011642487A CN112699358B CN 112699358 B CN112699358 B CN 112699358B CN 202011642487 A CN202011642487 A CN 202011642487A CN 112699358 B CN112699358 B CN 112699358B
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Abstract
The invention discloses a use method of a password safety protection device based on a fingerprint sensor, which comprises the fingerprint sensor and a fingerprint input module, wherein the fingerprint sensor is sequentially connected with a singlechip through an analog-to-digital converter, an encryption module and the singlechip, the fingerprint input module is electrically connected with the singlechip through another analog-to-digital converter, and the singlechip is electrically connected with a display. The invention also provides a corresponding using method, which comprises the steps that a fingerprint input module acquires a user fingerprint and converts the fingerprint into electric signal data; the electric signal data is converted into corresponding numbers through an analog-to-digital converter and normalized. The invention can solve the problems of easy stealing of passwords and poor key experience in the prior art, and has high efficiency, strong accuracy and good safety.
Description
Technical Field
The invention relates to the technical field of insurance unlocking, in particular to a use method of a password safety protection device based on a fingerprint sensor.
Background
At present, the ATM is used for inputting passwords through keys, but a part of lawless persons install special equipment on the ATM to acquire user passwords, and a miniature camera is usually installed above a keyboard to acquire bank card passwords of users.
The key input password has the following main problems: the key experience is poor, the button material is hard, and the input error is easy; some theft and fraud violations using automated teller machines often occur.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the password safety protection device based on the fingerprint sensor, which can solve the problems that passwords are easy to steal and key experience is poor in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention provides a use method of a password safety protection device based on a fingerprint sensor, which comprises the following steps:
s1, a fingerprint input module acquires a user fingerprint and converts the fingerprint into electric signal data;
s2, converting the electric signal data into corresponding numbers through an analog-to-digital converter, and carrying out normalization processing;
s3, comparing the normalized numbers with the numbers converted from the passwords stored in the singlechip, and finishing authentication when the numbers are the same, otherwise, displaying password errors.
The application method of the fingerprint sensor-based password safety protection device provided by the invention has the main beneficial effects that:
the invention has higher security, and the password corresponding to the self-set fingerprint is known only by the client, so that even if the password is illegally installed by a camera when the password is input, the password is not leaked. Security is higher than today's key entry techniques. The input mode of the fingerprint also optimizes the operation experience.
Drawings
Fig. 1 is a schematic structural diagram of a password security protection device based on a fingerprint sensor.
Fig. 2 is a flow chart of a method of using a fingerprint sensor based password security device.
Wherein, 1, a fingerprint sensor, 2, an analog-to-digital converter, 3, an encryption module, 4, a fingerprint input module, 5, analog-to-digital converter, 6, keyboard, 7, display, 8, singlechip.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
fig. 1 is a flow chart of the fingerprint sensor-based password security protection apparatus of the present invention.
The password safety protection device based on the fingerprint sensor comprises a fingerprint sensor 1 and a fingerprint input module 4, wherein the fingerprint sensor 1 is connected with a singlechip 8 through an analog-to-digital converter 2, an encryption module 3. The fingerprint input module 4 is electrically connected with the singlechip 8 through the other analog-to-digital converter 5, and the singlechip 8 is electrically connected with the display 7.
The singlechip 7 is electrically connected with the keyboard 6 to cope with the situation that the fingerprint sensor 1 cannot be used.
The analog-digital converter 2 and the analog-digital converter 5 are both 7135A/D converters. The model of the singlechip 8 is an 8051 singlechip.
Preferably, the fingerprint sensor 1 and the fingerprint input module 4 have the same structure and are respectively used for setting passwords and inputting the passwords.
The invention also provides a using method of the password safety protection device based on the fingerprint sensor, which is characterized by comprising the following steps as shown in fig. 2:
s1, a fingerprint input module 4 acquires a user fingerprint and converts the fingerprint into electric signal data.
S2, converting the electric signal data into corresponding numbers through an analog-to-digital converter 5, and performing normalization processing.
Wherein the normalized number is a nine-digit number.
S3, comparing the normalized numbers with the numbers converted from the passwords stored in the singlechip 8, and finishing authentication when the numbers are the same, otherwise, displaying password errors.
Further, the password stored in the singlechip 8 is obtained by the following steps:
s3-1, the fingerprint sensor 1 acquires a user fingerprint and converts the fingerprint into electric signal data.
S3-2, converting the electric signal data into corresponding numbers through an analog-to-digital converter 2, and performing normalization processing.
S3-3, encrypting the normalized numbers to obtain encrypted numbers.
Specifically, the encryption algorithm is:
the array for the ith fingerprint transform is x ij Wherein i=1, 2, … …,6,j =1, 2, … …,9; the encrypted array is X ij The following relationship exists:
X ij ＝x ij +j。
s3-4, storing the encrypted numbers in the singlechip 8 to obtain the passwords stored in the singlechip 8.
Further, the comparison method comprises the following steps:
the user fingerprint information array converted by the analog-digital converter 5 is Y ij When the condition is satisfied: x is X ij ＝Y ij At that time, the test passed.
The above description of the embodiments of the present invention has been provided to facilitate understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and that all the inventions using the inventive concept are to be protected as long as various changes are within the spirit and scope of the present invention as defined and defined by the appended claims to those skilled in the art.
Claims (2)
1. The application method of the password safety protection device based on the fingerprint sensor is characterized by comprising the following steps of:
s1, a fingerprint input module acquires a user fingerprint and converts the fingerprint into electric signal data;
s2, converting the electric signal data into corresponding numbers through an analog-to-digital converter, and carrying out normalization processing;
s3, comparing the normalized numbers with the numbers converted from the passwords stored in the singlechip, and finishing authentication when the numbers are the same, otherwise, displaying password errors; the method specifically comprises the following steps:
the password stored in the singlechip is obtained through the following steps:
s3-1, a fingerprint sensor acquires a user fingerprint and converts the fingerprint into electric signal data;
s3-2, converting the electric signal data into corresponding numbers through an analog-to-digital converter, and carrying out normalization processing;
s3-3, encrypting the normalized numbers to obtain encrypted numbers;
s3-4, storing the encrypted numbers in the singlechip to obtain passwords stored in the singlechip;
the encryption algorithm is as follows:
the array for the ith fingerprint transform is x ij Wherein i=1, 2, … …,6,j =1, 2, … …,9; the encrypted array is X ij The following relationship exists:
X ij ＝x ij +j
the comparison method comprises the following steps:
the user fingerprint information array converted by the analog-to-digital converter is Y ij When the condition is satisfied:
X ij ＝Y ij at that time, the test passed.
2. The method of claim 1, wherein the normalized numbers are nine digits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011642487.5A CN112699358B (en) | 2020-12-31 | 2020-12-31 | Application method of password safety protection device based on fingerprint sensor |
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| CN202011642487.5A CN112699358B (en) | 2020-12-31 | 2020-12-31 | Application method of password safety protection device based on fingerprint sensor |
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| CN112699358A CN112699358A (en) | 2021-04-23 |
| CN112699358B true CN112699358B (en) | 2023-10-03 |
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