CN105897417A - Encrypted data input method and device - Google Patents

Abstract

The invention provides an encrypted data input method and device, wherein the method comprises the following steps: acquiring a first fingerprint input by a user; acquiring a corresponding encryption algorithm in a database according to the fingerprint, and generating a random number, wherein the random number is a multi-bit number; displaying the random number; and receiving encrypted data input by a user, wherein the encrypted data is calculated by the user according to the random number, the original data and a preset encryption algorithm. The encrypted data input method and the encrypted data input device encrypt the data by using the random number, and the security of data input is improved because the random number has uncertainty and related encryption algorithms of the random number are various.

Description

Encrypted data input method and device

technical field

The invention relates to the communication field, in particular to an encrypted data input method and device.

Background technique

With the development of smart phones, large-screen mobile phones are becoming more and more popular and have become a trend. Large-screen mobile phones have advantages in reading and video games, and can bring people a good visual experience. However, the problem of how to effectively ensure the security of mobile phone information also arises.

Due to the large screen of a large-screen mobile phone, information leakage may occur when users operate on it. For example, it is easy for the user to see the password by others during the password input process, which will lead to the disclosure of the password. The existing technology cannot ensure the input security of important data such as passwords, however, once these important data are leaked, the personal privacy and interests of users will be seriously endangered.

Therefore, it is necessary to provide an encrypted data input method that can ensure the security of the data input process.

Contents of the invention

Embodiments of the present invention provide an encrypted data input method and device that can improve data input security; to solve the technical problem that the existing encrypted data input method and device cannot ensure data input security.

An embodiment of the present invention provides an encrypted data input method, which includes:

Obtain the first fingerprint input by the user;

Obtain the corresponding encryption algorithm in the database according to the first fingerprint, and generate a random number, wherein the random number is a multi-digit number;

Display random numbers;

Receive encrypted data input by the user, where the encrypted data is calculated by the user based on random numbers, original data and preset encryption algorithms.

The embodiment of the present invention also provides an encrypted data input device, which includes:

The first fingerprint acquisition module is used to acquire the first fingerprint input by the user;

Encryption algorithm and random number acquisition module, used to acquire the corresponding encryption algorithm in the database according to the first fingerprint, and generate a random number, wherein the random number is a multi-digit number;

The random number display module is used to display the random number;

The encrypted data receiving module is used to receive the encrypted data input by the user, wherein the encrypted data is calculated by the user according to the random number, the original data and the preset encryption algorithm.

Compared with the encrypted data input method and device in the prior art, the encrypted data input method and device of the present invention can effectively improve the security of data input by encrypting the input data; The method and device cannot ensure the technical problem of data input security.

Description of drawings

Fig. 1 is the flowchart of the first preferred embodiment of the encrypted data input method of the present invention;

Fig. 2 is the flowchart of the second preferred embodiment of the encrypted data input method of the present invention;

Fig. 3 is a schematic structural diagram of the first preferred embodiment of the encrypted data input device of the present invention;

FIG. 4 is a schematic structural diagram of a second preferred embodiment of the encrypted data input device of the present invention;

Fig. 5 is a flowchart of a specific embodiment of the encrypted data input method and device of the present invention.

detailed description

Referring to the drawings, wherein like reference numerals represent like components, the principles of the present invention are exemplified when implemented in a suitable computing environment. The following description is based on illustrated specific embodiments of the invention, which should not be construed as limiting other specific embodiments of the invention not described in detail herein.

In the following description, specific embodiments of the present invention are described with reference to steps and symbols for operations performed by one or more computers, unless otherwise stated. Accordingly, it will be understood that the steps and operations, which at times are referred to as being performed by a computer, include manipulation by a computer processing unit of electronic signals representing data in a structured form. This manipulation transforms the data or maintains it at a location in the computer's memory system that can reconfigure or otherwise alter the operation of the computer in a manner well known to those skilled in the art. The data structures maintained by the data are physical locations in the memory that have specific characteristics defined by the data format. However, the principles of the present invention are described in the above words, which are not meant to be a limitation. Those skilled in the art will understand that the various steps and operations described below can also be implemented in hardware.

The encrypted data input apparatus of the present invention may be implemented using a variety of electronic devices including, but not limited to, personal computers, server computers, hand-held or laptop devices, mobile devices such as mobile phones, personal digital assistants, media player processors, etc.), multiprocessor systems, consumer electronics devices, minicomputers, mainframe computers, distributed computing environments including any of the above systems or devices, and the like. However, the electronic device preferably comprises a smart mobile device, in order to increase the security of data entry on the smart mobile device.

Embodiment one

Please refer to FIG. 1 , which is a flowchart of a first preferred embodiment of the encrypted data input method of the present invention. The encrypted data input method of this preferred embodiment includes:

Step S101, acquiring the first fingerprint input by the user;

Step S102, obtain the corresponding encryption algorithm in the database according to the first fingerprint, and generate a random number, wherein the random number has multiple digits;

Step S103, displaying the random number;

Step S104, receiving encrypted data input by the user, wherein the encrypted data is calculated by the user based on random numbers, original data and a preset encryption algorithm.

The specific flow of each step of the encrypted data input method in this preferred embodiment will be described in detail below.

In step S101, the terminal acquires a first fingerprint input by a user. The terminal obtains the first fingerprint input by the user, wherein the terminal is preferably an intelligent mobile terminal such as a mobile phone or a tablet computer. In social life, we have to deal with a lot of passwords every day, bank card withdrawal requires passwords, connects to wireless networks requires passwords, and so on. For the convenience of remembering passwords, people often choose one or several passwords as the shared passwords of multiple accounts. Once the passwords are leaked, the privacy and interests of users will be endangered. Therefore, it is necessary to improve the security of the password input process.

Due to the uniqueness and convenience of fingerprints, in this preferred embodiment, by obtaining the user's first fingerprint, it can be used to identify the user's identity, and the encryption algorithm can be bound to the user, so that the user can quickly calculate according to the encryption algorithm. get encrypted data. In this way, the security of the data input process can be greatly improved by encrypting the input data. Specifically, when the user is in a public place such as a train station or a shopping mall, he may choose to encrypt the data when inputting a password. After receiving the encryption request, the terminal displays a fingerprint input interface for obtaining the user's fingerprint. Then go to step S102.

In step S102, the terminal acquires the corresponding encryption algorithm in the database according to the first fingerprint, and generates a random number, wherein the random number has multiple digits. Specifically, the encryption algorithm is a series of algorithms that use random numbers to encrypt the data according to the characteristics of the data. For example, if the data is a decimal number, the encryption of the data can be realized by adding, subtracting, multiplying, and dividing the data and random numbers; Random numbers are subjected to logic operations such as XOR, AND, or to realize data encryption. In this way, there are various methods of encrypting with random numbers according to data characteristics, which are difficult to decipher, and effectively improve the security of data input.

It should be noted that random numbers, commonly known as random numbers, are numbers arranged in a random order and subject to a certain probability distribution law. They are uncertain, that is, the numbers generated each time are uncertain. In this way, even through one encryption algorithm, the encrypted data obtained is different due to different random numbers, thereby enhancing the security of data input.

In this preferred embodiment, setting the random number to a multi-digit number can increase the difficulty of decrypting encrypted data, thereby further improving the security of data input. Then go to step S103.

In step S103, the terminal displays the random number. Specifically, the terminal displays the random number generated in step S103 to the user, so that the user can calculate and obtain encrypted data according to the random number. Then go to step S104.

In step S104, the terminal receives encrypted data input by the user, wherein the encrypted data is calculated by the user according to random numbers, original data and a preset encryption algorithm. The original data is the data that needs to be encrypted. For example, when the user uses the WeChat payment method to pay after consumption in a restaurant, the payment password 123456 originally set by the user is the original data.

In the case where the original data is 123456 and the generated random number is 13, if the preset encryption algorithm is the original data minus the random number, the user will input the encrypted data 123443; and if the preset encryption algorithm is the original data plus the random number , the user will enter the encrypted data 123469. In the case where the original data is 123456 and the preset encryption algorithm is the original data minus the random number, if the generated random number is 11, the user will input the encrypted data 123445; if the generated random number is 21, the user will input the encrypted data Data 123435. To sum up, it can be seen that the difference in the preset encryption algorithm and the difference in the generated random number will make the encrypted data input by the user different, thus increasing the difficulty for people to decipher the encrypted data, thereby improving the security of data input.

In this way, the encrypted data input process of the encrypted data input method in this preferred embodiment is completed.

The encrypted data input method of this preferred embodiment encrypts the input data by using multi-bit random numbers. Since the random numbers generated each time are different, even under the same encryption algorithm, the encrypted data generated by each encryption is different. Not the same, which greatly increases the difficulty of decrypting encrypted data, thereby improving the security of encrypted data input, and effectively protecting the original data.

Embodiment two

Please refer to FIG. 2 , which is a flowchart of a second preferred embodiment of the encrypted data input method of the present invention. The encrypted data input method of this preferred embodiment includes:

Step S201, acquiring the first fingerprint input by the user;

Step S202, judging whether the first fingerprint matches the second fingerprint in the database;

Step S203, if the first fingerprint does not match the second fingerprint in step S202, prompting the user to input wrong fingerprint;

Step S204, if the first fingerprint matches the second fingerprint in step S202, then obtain the encryption algorithm corresponding to the second fingerprint, and generate a random number, wherein the random number is a multi-digit number;

Step S205, displaying the random number;

Step S206, receiving the encrypted data input by the user, wherein the encrypted data is calculated by the user according to the random number, the original data and the preset encryption algorithm.

The specific flow of each step of the encrypted data input method in this preferred embodiment will be described in detail below.

In step S201, the terminal acquires the first fingerprint input by the user. The terminal obtains the first fingerprint input by the user, wherein the terminal is preferably an intelligent mobile terminal such as a mobile phone or a tablet computer. In social life, we have to deal with a lot of passwords every day, bank card withdrawal requires passwords, connects to wireless networks requires passwords, and so on. For the convenience of remembering passwords, people often choose one or several passwords as the shared passwords of multiple accounts. Once the passwords are leaked, the privacy and interests of users will be endangered. Therefore, it is necessary to improve the security of the password input process.

Due to the uniqueness and convenience of fingerprints, in this preferred embodiment, by obtaining the user's first fingerprint, it can be used to identify the user's identity, and the encryption algorithm can be bound to the user, so that the user can quickly calculate according to the encryption algorithm. get encrypted data. In this way, the security of the data input process can be greatly improved by encrypting the input data. Specifically, when the user is in a public place such as a train station or a shopping mall, he may choose to encrypt the data when inputting a password. After receiving the encryption request, the terminal displays a fingerprint input interface for obtaining the user's fingerprint. Then go to step S202.

In step S202, the terminal judges whether the first fingerprint matches the second fingerprint in the database, if not, proceeds to step S203; if matches, proceeds to step S204. It should be noted that the database includes the second fingerprint, the encryption algorithm and the relationship between them. The specific establishment process is as follows: first, the terminal obtains the user's second fingerprint; then, the terminal obtains the encryption algorithm; finally, the terminal stores the second fingerprint of the user. Two fingerprints, encryption algorithms and the relationship between the two to establish a database. Wherein, the correspondence between the second fingerprint and the encryption algorithm can be one-to-one, one-to-many or many-to-many, and binding the second fingerprint to the encryption algorithm can ensure that the user knows the specific calculation process of the encryption algorithm.

In step S203, if the first fingerprint does not match the second fingerprint in step S202, the terminal prompts the user to input an incorrect fingerprint. Preferably, after the terminal prompts the user to input wrong fingerprints, the terminal may further prompt the user whether to choose to input initial data, so that the user who is eager to input data can quickly input data.

In step S204, if the first fingerprint matches the second fingerprint in step S202, the terminal obtains the encryption algorithm corresponding to the second fingerprint, and generates a random number, wherein the random number has multiple digits. The encryption algorithm is a series of algorithms that use random numbers to encrypt the data according to the characteristics of the data. For example, if the data is a decimal number, the encryption of the data can be realized by adding, subtracting, multiplying, and dividing the data and random numbers; Random numbers are subjected to logic operations such as XOR, AND, or to realize data encryption. In this way, there are various methods of encrypting with random numbers according to data characteristics, which are difficult to decipher, and effectively improve the security of data input.

Specifically, the encryption algorithm includes at least one of an addition encryption algorithm, a subtraction encryption algorithm, a multiplication encryption algorithm, a division encryption algorithm, an XOR encryption algorithm, or an encryption algorithm and an encryption algorithm. Next, the above algorithm will be introduced in detail.

First, take the original data 233985 and the random number 123456 as examples to illustrate the addition encryption algorithm, subtraction encryption algorithm, multiplication encryption algorithm, and division encryption algorithm.

Among them, the addition encryption algorithm is to add the random number 123456 and the original data 233985 bit by bit, and keep the lowest bit of each bit after the addition to obtain the encrypted data 356331. Preferably, the addition encryption algorithm can also be to add the random number 123456 and the original data 233985 to obtain the encrypted data 357441.

The subtraction encryption algorithm is to subtract the original data 233985 and the random number 123456 bit by bit, and take the absolute value of each bit after the subtraction to obtain the encrypted data 110531. Preferably, the subtraction encryption algorithm can also subtract the original data 233985 and the random number 123456, and take the absolute value after subtraction to obtain the encrypted data 110529.

The multiplication encryption algorithm is to multiply the random number 123456 and the original data 233985 bit by bit, and retain the lowest bit of each bit after multiplication to obtain the encrypted data 269600.

The division encryption algorithm is to divide the original data 233985 and the random number 123456 bit by bit, and keep the integer part of each bit after division to obtain the encrypted data 211210.

Next, taking the original data 110101 and the random number 1011 as examples, the XOR encryption algorithm, or the encryption algorithm, and the encryption algorithm are described. Since the number of digits of the random number is smaller than that of the original data, the random number 101100 is obtained after the last digit of the random number 1011 is filled with 0. Similarly, if the random number is 1100010101, the number of digits of the random number 1100010101 is greater than the number of digits of the original data, so the last digit of the random number 1100010101 is discarded to obtain the random number 110001.

Wherein, the XOR encryption algorithm is to perform a bitwise XOR operation on the random number 101100 and the original data 110101 to obtain the encrypted data 011001.

Or the encryption algorithm is to perform a bitwise OR operation on the random number 101100 and the original data 110101 to obtain the encrypted data 111101.

The AND encryption algorithm is to perform a bitwise AND operation on the random number 101100 and the original data 110101 to obtain the encrypted data 100100.

It should be noted that how the above-mentioned encryption performs the encryption calculation of the random number and the original data can be set by the user, and is not specifically limited here.

It should be noted that random numbers, commonly known as random numbers, are numbers arranged in a random order and subject to a certain probability distribution law. They are uncertain, that is, the numbers generated each time are uncertain. In this way, even through one encryption algorithm, the encrypted data obtained is different due to different random numbers, thereby enhancing the security of data input.

In this preferred embodiment, setting the random number to a multi-digit number can increase the difficulty of decrypting encrypted data, thereby further improving the security of data input. Preferably, if the number of digits of the random number 0110 is less than the number of digits of the original data 1010010, 0000110 can be obtained by adding 0 to the first digit of the random number 0110, or 1110110 can be obtained by adding 1 to the first digit of the random number 0110, or by adding 1 to the first digit of the random number 0110 Add 1 to the last digit to get 0110111 and so on to process the random number to obtain a random number with the same number of digits as the original data, so as to facilitate the calculation of the two. Similarly, if the number of digits of the random number 0110101 is greater than that of the original data 1011, the random number 0110 can be obtained by discarding the last digit of the random number 0110101, or the random number 0101 can be obtained by discarding the first digit of the random number 0110101, etc. Handle random numbers. It should be noted that the relevant processing method may be determined by the user himself, which is not specifically limited here.

At the same time, in this preferred embodiment, not only can the random number be processed into a random number with the same number of digits as the original data, but also a random number with a different number of digits and the original data can be used for calculation, such as directly combining the original data 2031 with the random number The number 11 is added to obtain the encrypted data 2042. It should be noted that the examples listed here are not specifically limited. Then go to step S205.

In step S205, the terminal displays the random number. Specifically, the terminal displays the random number generated in step S204 to the user, so that the user can calculate and obtain encrypted data according to the random number. Then go to step S206.

In step S206, the terminal receives the encrypted data input by the user, wherein the encrypted data is calculated by the user according to the random number, the original data and the preset encryption algorithm. The original data is the data that needs to be encrypted. For example, when the user uses the WeChat payment method to pay after consumption in a restaurant, the payment password 123456 originally set by the user is the original data.

It should be noted that the preset encryption algorithm is one of the encryption algorithms described above. In the case where the original data is 123456 and the generated random number is 13, if the preset encryption algorithm is the original data minus the random number, the user will input the encrypted data 123443; and if the preset encryption algorithm is the original data plus the random number , the user will enter the encrypted data 123469. In the case where the original data is 123456 and the preset encryption algorithm is the original data minus the random number, if the generated random number is 11, the user will input the encrypted data 123445; if the generated random number is 21, the user will input the encrypted data Data 123435. To sum up, it can be seen that the difference in the preset encryption algorithm and the difference in the generated random number will make the encrypted data input by the user different, thus increasing the difficulty for people to decipher the encrypted data, thereby improving the security of data input.

In this way, the encrypted data input process of the encrypted data input method in this preferred embodiment is completed.

On the basis of the first preferred embodiment, the encrypted data input method of this preferred embodiment describes in detail the related algorithms that use multi-digit random numbers for encryption. Since the random numbers are multi-digit, the processing method is complicated, and there are many types of related algorithms , so it is very difficult for others to crack, thereby further improving the security of data input.

Embodiment Three

Please refer to FIG. 3 , which is a structural diagram of a first preferred embodiment of the encrypted data input device of the present invention. The encrypted data input device 30 of this preferred embodiment includes a first fingerprint acquisition module 301 , an encryption algorithm and random number acquisition module 302 , a random number display module 303 and an encrypted data receiving module 304 . Wherein, the first fingerprint acquisition module 301 is used to acquire the first fingerprint input by the user; the encryption algorithm and random number acquisition module 302 is used to acquire the corresponding encryption algorithm in the database according to the first fingerprint, and generate a random number, wherein the random number is Multiple digits; the random number display module 303 is used to display the random number; the encrypted data receiving module 304 is used to receive the encrypted data input by the user, wherein the encrypted data is calculated by the user according to the random number, the original data and the preset encryption algorithm out.

When the encrypted data input device 30 is used, firstly, the first fingerprint acquisition module 301 acquires the first fingerprint input by the user. In social life, we have to deal with a lot of passwords every day, bank card withdrawal requires passwords, connects to wireless networks requires passwords, and so on. For the convenience of remembering passwords, people often choose one or several passwords as the shared passwords of multiple accounts. Once the passwords are leaked, the privacy and interests of users will be endangered. Therefore, it is necessary to improve the security of the password input process.

Due to the uniqueness and convenience of fingerprints, the acquisition of the user's first fingerprint by the first fingerprint acquisition module 301 in this preferred embodiment can be used to identify the user's identity, and the encryption algorithm can be bound with the user, so that the user The encrypted data can be quickly calculated according to the encryption algorithm. In this way, the security of the data input process can be greatly improved by encrypting the input data. Specifically, when the user is in a public place such as a train station or a shopping mall, he can choose to encrypt the data when entering a password, and the fingerprint input interface will be displayed after receiving the encryption request, so that the first fingerprint acquisition module 301 can acquire The fingerprint entered by the user. Then the encryption algorithm and random number acquisition module 302 is called.

Then, the encryption algorithm and random number acquisition module 302 acquires the corresponding encryption algorithm in the database according to the first fingerprint, and generates a random number, wherein the random number has multiple digits. Specifically, the encryption algorithm is a series of algorithms that use random numbers to encrypt the data according to the characteristics of the data. For example, if the data is a decimal number, the encryption of the data can be realized by adding, subtracting, multiplying, and dividing the data and random numbers; Random numbers are subjected to logic operations such as XOR, AND, or to realize data encryption. In this way, there are various methods of encrypting with random numbers according to data characteristics, which are difficult to decipher, and effectively improve the security of data input.

It should be noted that random numbers, commonly known as random numbers, are numbers arranged in a random order and subject to a certain probability distribution law. They are uncertain, that is, the numbers generated each time are uncertain. In this way, even through one encryption algorithm, the encrypted data obtained is different due to different random numbers, thereby enhancing the security of data input.

In this preferred embodiment, setting the random number to a multi-digit number can increase the difficulty of decrypting encrypted data, thereby further improving the security of data input. Then the random number display module 303 is called.

Next, the random number display module 303 performs a display operation on the random number. Specifically, the random number display module 303 displays the encryption algorithm and the random number generated by the random number acquisition module 302 to the user, so that the user can calculate and obtain encrypted data according to the random number. Then the encrypted data receiving module 304 is called.

Finally, the encrypted data receiving module 304 receives the encrypted data input by the user, wherein the encrypted data is calculated by the user according to random numbers, original data and a preset encryption algorithm. The original data is the data that needs to be encrypted. For example, when the user uses the WeChat payment method to pay after consumption in a restaurant, the payment password 123456 originally set by the user is the original data.

In the case where the original data is 123456 and the generated random number is 3, if the preset encryption algorithm is the original data minus the random number, the user will input the encrypted data 123453; and if the preset encryption algorithm is the original data plus the random number , the user will enter encrypted data 123459. In the case where the original data is 123456 and the preset encryption algorithm is the original data minus the random number, if the generated random number is 1, the user will input the encrypted data 123455; if the generated random number is 2, the user will input the encrypted data Data 123454. To sum up, it can be seen that the difference in the preset encryption algorithm and the difference in the generated random number will make the encrypted data input by the user different, thus increasing the difficulty for people to decipher the encrypted data, thereby improving the security of data input.

In this way, the encrypted data input process of the encrypted data input device of the preferred embodiment is completed.

The encrypted data input device of this preferred embodiment encrypts the input data by using multi-bit random numbers. Since the random numbers generated each time are different, even under the same encryption algorithm, the encrypted data generated by each encryption is different. Not the same, which greatly increases the difficulty of decrypting encrypted data, thereby improving the security of encrypted data input, and effectively protecting the original data.

Embodiment Four

Please refer to FIG. 4 , which is a structural diagram of a second preferred embodiment of the encrypted data input device of the present invention. The encrypted data input device 40 of this preferred embodiment includes a first fingerprint acquisition module 401 , an encryption algorithm and random number acquisition module 402 , a random number display module 403 and an encrypted data receiving module 404 . Wherein, the encryption algorithm and random number acquisition module 402 also includes a second fingerprint acquisition unit 4021, an encryption algorithm acquisition unit 4022, a database establishment unit 4023, a fingerprint matching judgment unit 4024, an encryption algorithm and random number acquisition unit 4025, and a prompt unit 4026.

The encrypted data input device of this preferred embodiment is refined on the basis of the first preferred embodiment, wherein the second fingerprint acquisition unit 401 is used to acquire the user's second fingerprint; the encryption algorithm acquisition unit 402 is used to acquire the encryption algorithm The database building unit 403 is used to store the second fingerprint, the encryption algorithm and the association between the two, so as to set up the database; the fingerprint matching judging unit 404 is used to judge whether the first fingerprint matches the second fingerprint in the database; the encryption algorithm and random The number obtaining unit 405 is used for obtaining the encryption algorithm corresponding to the second fingerprint when matching, and generating a random number; the prompting unit 406 is used for prompting the user to input wrong fingerprint when not matching.

When the encrypted data input device 40 is used, first, the first fingerprint acquisition module 401 acquires the first fingerprint input by the user. In social life, we have to deal with a lot of passwords every day, bank card withdrawal requires passwords, connects to wireless networks requires passwords, and so on. For the convenience of remembering passwords, people often choose one or several passwords as the shared passwords of multiple accounts. Once the passwords are leaked, the privacy and interests of users will be endangered. Therefore, it is necessary to improve the security of the password input process.

Due to the uniqueness and convenience of fingerprints, in this preferred embodiment, by obtaining the user's first fingerprint, it can be used to identify the user's identity, and the encryption algorithm can be bound to the user, so that the user can quickly calculate according to the encryption algorithm. get encrypted data. In this way, the security of the data input process can be greatly improved by encrypting the input data. Specifically, when the user is in a public place such as a train station or a shopping mall, he can choose to encrypt the data when entering a password, and the fingerprint input interface will be displayed after receiving the encryption request, so that the first fingerprint acquisition module 401 can acquire The fingerprint entered by the user. Then call the fingerprint matching judgment unit 4024 in the encryption algorithm and random number acquisition module 402 .

Then, the fingerprint matching judging unit 4024 judges whether the first fingerprint matches the second fingerprint in the database, and if it does not match, then calls the encryption algorithm and the prompt unit 4026 in the random number acquisition module 402; The encryption algorithm in the number acquisition module 402 and the random number acquisition unit 4025. It should be noted that the database includes the second fingerprint, the encryption algorithm and the relationship between the two. The specific establishment process is as follows: first, the second fingerprint acquisition unit 4021 in the encryption algorithm and random number acquisition module 402 acquires the user's second fingerprint. Two fingerprints; then, the encryption algorithm and the encryption algorithm acquisition unit 4022 in the random number acquisition module 402 acquire the encryption algorithm; finally, the encryption algorithm and the database establishment unit 4023 in the random number acquisition module 402 store the second fingerprint, the encryption algorithm and both relationship to create a database. Wherein, the correspondence between the second fingerprint and the encryption algorithm can be one-to-one, one-to-many or many-to-many, and binding the second fingerprint to the encryption algorithm can ensure that the user knows the specific calculation process of the encryption algorithm.

If the fingerprint matching judging unit 4024 judges that the first fingerprint does not match the second fingerprint, the prompting unit 4026 prompts the user to input an incorrect fingerprint. After the prompting unit 4026 prompts the user to input wrong fingerprints, it can further prompt the user whether to choose to input initial data, so that the user who is eager to input data can quickly input data.

If the fingerprint matching judgment unit 4024 judges that the first fingerprint matches the second fingerprint, the encryption algorithm and random number acquisition unit 4025 acquires the encryption algorithm corresponding to the second fingerprint, and generates a random number, wherein the random number has multiple digits. The encryption algorithm is a series of algorithms that use random numbers to encrypt the data according to the characteristics of the data. For example, if the data is a decimal number, the encryption of the data can be realized by adding, subtracting, multiplying, and dividing the data and random numbers; Random numbers are subjected to logic operations such as XOR, AND, or to realize data encryption. In this way, there are various methods of encrypting with random numbers according to data characteristics, which are difficult to decipher, and effectively improve the security of data input.

Specifically, the encryption algorithm includes at least one of an addition encryption algorithm, a subtraction encryption algorithm, a multiplication encryption algorithm, a division encryption algorithm, an XOR encryption algorithm, or an encryption algorithm and an encryption algorithm. Next, the above algorithm will be introduced in detail.

Specifically, the encryption algorithm includes at least one of an addition encryption algorithm, a subtraction encryption algorithm, a multiplication encryption algorithm, a division encryption algorithm, an XOR encryption algorithm, or an encryption algorithm and an encryption algorithm. Next, the above algorithm will be introduced in detail.

First, take the original data 233985 and the random number 123456 as examples to illustrate the addition encryption algorithm, subtraction encryption algorithm, multiplication encryption algorithm, and division encryption algorithm.

Among them, the addition encryption algorithm is to add the random number 123456 and the original data 233985 bit by bit, and keep the lowest bit of each bit after the addition to obtain the encrypted data 356331. Preferably, the addition encryption algorithm can also be to add the random number 123456 and the original data 233985 to obtain the encrypted data 357441.

The subtraction encryption algorithm is to subtract the original data 233985 and the random number 123456 bit by bit, and take the absolute value of each bit after the subtraction to obtain the encrypted data 110531. Preferably, the subtraction encryption algorithm can also subtract the original data 233985 and the random number 123456, and take the absolute value after subtraction to obtain the encrypted data 110529.

The multiplication encryption algorithm is to multiply the random number 123456 and the original data 233985 bit by bit, and retain the lowest bit of each bit after multiplication to obtain the encrypted data 269600.

The division encryption algorithm is to divide the original data 233985 and the random number 123456 bit by bit, and keep the integer part of each bit after division to obtain the encrypted data 211210.

Next, taking the original data 110101 and the random number 1011 as examples, the XOR encryption algorithm, or the encryption algorithm, and the encryption algorithm are described. Since the number of digits of the random number is smaller than that of the original data, the random number 101100 is obtained after the last digit of the random number 1011 is filled with 0. Similarly, if the random number is 1100010101, the number of digits of the random number 1100010101 is greater than the number of digits of the original data, so the last digit of the random number 1100010101 is discarded to obtain the random number 110001.

Wherein, the XOR encryption algorithm is to perform a bitwise XOR operation on the random number 101100 and the original data 110101 to obtain the encrypted data 011001.

Or the encryption algorithm is to perform a bitwise OR operation on the random number 101100 and the original data 110101 to obtain the encrypted data 111101.

The AND encryption algorithm is to perform a bitwise AND operation on the random number 101100 and the original data 110101 to obtain the encrypted data 100100.

It should be noted that how the above-mentioned encryption algorithm encrypts the random number and the original data can be set by the user, and is not specifically limited here.

It should be noted that random numbers, commonly known as random numbers, are numbers arranged in a random order and subject to a certain probability distribution law. They are uncertain, that is, the numbers generated each time are uncertain. In this way, even through one encryption algorithm, the encrypted data obtained is different due to different random numbers, thereby enhancing the security of data input.

In this preferred embodiment, setting the random number to a multi-digit number can increase the difficulty of decrypting encrypted data, thereby further improving the security of data input. Then call the random number display module 403 .

Then, the random number display module 403 performs a display operation on the random number. Specifically, the random number display module 403 displays the encryption algorithm and the random number generated by the random number acquisition unit 4025 to the user, so that the user can calculate and obtain encrypted data according to the random number. Then the encrypted data receiving module 404 is called.

Finally, the encrypted data receiving module 404 receives the encrypted data input by the user, wherein the encrypted data is calculated by the user according to random numbers, original data and a preset encryption algorithm. The original data is the data that needs to be encrypted. For example, when the user uses the WeChat payment method to pay after consumption in a restaurant, the payment password 123456 originally set by the user is the original data.

It should be noted that the preset encryption algorithm is one of the encryption algorithms described above. In the case where the original data is 123456 and the generated random number is 3, if the preset encryption algorithm is the original data minus the random number, the user will input the encrypted data 123453; and if the preset encryption algorithm is the original data plus the random number , the user will enter encrypted data 123459. In the case where the original data is 123456 and the preset encryption algorithm is the original data minus the random number, if the generated random number is 1, the user will input the encrypted data 123455; if the generated random number is 2, the user will input the encrypted data Data 123454. To sum up, it can be seen that the difference in the preset encryption algorithm and the difference in the generated random number will make the encrypted data input by the user different, thus increasing the difficulty for people to decipher the encrypted data, thereby improving the security of data input.

In this way, the encrypted data input process of the encrypted data input device of the preferred embodiment is completed.

On the basis of the first preferred embodiment, the encrypted data input device of this preferred embodiment describes in detail the related algorithms that use multi-digit random numbers for encryption. Since the random numbers are multi-digit, the processing method is complicated, and there are many kinds of related algorithms , so it is very difficult for others to crack, thereby further improving the security of data input.

Embodiment five

Please refer to FIG. 5 , which is a flowchart of a specific embodiment of the encrypted data input method and device of the present invention.

Step S501, when waiting at the train station, Zhang San long presses the power button of the mobile phone to turn on the mobile phone and play games. The mobile phone receives a password input request generated by long pressing the power button, prompting Zhang San whether to encrypt the unlock password.

In step S502, Zhang San chooses to encrypt the unlocking password in order to ensure that the unlocking password is not leaked due to the crowds at the train station. After receiving the encryption request, the mobile phone displays the fingerprint input interface.

In step S503, Zhang San inputs a fingerprint on the fingerprint input interface, and the mobile phone obtains an additive encryption algorithm based on the fingerprint, and generates a random number 1 to be displayed on the mobile phone interface.

Step S504, Zhang San sees the random number 121212 displayed on the mobile phone, adds it to the original password 987654 bit by bit, and keeps the lowest digit of each digit after the addition to get a new password 008866, so he enters the new password.

Step S505, the mobile phone receives that the new password entered by Zhang San is consistent with the encrypted password, so the screen is unlocked.

The encrypted data input method and the data input device in this preferred embodiment encrypt data by using multi-bit random numbers. Since multi-bit random numbers are complicated to process and there are many encryption algorithms related to random numbers, the difficulty of data being cracked is greatly increased. This greatly increases the security of data entry.

Each functional unit in the embodiment of the present invention may be integrated into one processing module, or each unit may physically exist separately, or two or more units may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules. If the integrated modules are realized in the form of software function modules and sold or used as independent products, they can also be stored in a computer-readable storage medium. The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, and the like. Each of the above devices or systems may execute the methods in the corresponding method embodiments.

In summary, although the present invention has been disclosed above with preferred embodiments, the above preferred embodiments are not intended to limit the present invention, and those of ordinary skill in the art can make various modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope defined in the claims.

Claims (10)

1. An encrypted data input method, characterized in that, comprising: Obtain the first fingerprint input by the user; Obtain the corresponding encryption algorithm in the database according to the first fingerprint, and generate a random number, wherein the random number is a multi-digit number; performing a display operation on the random number; receiving encrypted data input by the user, wherein the encrypted data is calculated by the user according to the random number, original data and a preset encryption algorithm. 2. The encrypted data input method according to claim 1, the step of establishing the database specifically comprises: Obtain the second fingerprint of the user; Get the encryption algorithm; storing the second fingerprint, the encryption algorithm and the association relationship between them to establish the database. 3. The encrypted data input method according to claim 1, the step of obtaining a corresponding encryption algorithm in the database according to the first fingerprint and generating a random number specifically includes: judging whether the first fingerprint matches a second fingerprint in the database; If it matches, then obtain the encryption algorithm corresponding to the second fingerprint, and generate a random number; If they do not match, it will prompt the user to input wrong fingerprint. 4. The encrypted data input method according to claim 1, wherein the preset encryption algorithm is one of the database encryption algorithms. 5. The encrypted data input method according to claim 1, said encryption algorithm at least comprises an addition encryption algorithm, a subtraction encryption algorithm, a multiplication encryption algorithm, a division encryption algorithm, an XOR encryption algorithm, or an encryption algorithm, and One of the encryption algorithms. Wherein, the addition encryption algorithm is to add the random number and the original data bit by bit, and retain the lowest bit of each bit after the addition to obtain the encrypted data; The subtraction encryption algorithm is to subtract the original data and the random number bit by bit, and take the absolute value of each bit after the subtraction to obtain the encrypted data; The multiplication encryption algorithm is to multiply the random number and the original data bit by bit, and retain the lowest bit of each bit after multiplication to obtain the encrypted data; The encryption algorithm for dividing is to divide the original data and the random number bit by bit, and retain the integer part of each bit after the division to obtain the encrypted data; The XOR encryption algorithm is to perform a bitwise XOR operation on the random number and the original data to obtain encrypted data; The OR encryption algorithm is to perform a bitwise OR operation on the random number and the original data to obtain the encrypted data; The AND encryption algorithm is to perform bitwise AND operation on the random number and the original data to obtain the encrypted data. 6. The encrypted data input method according to claim 5, if the number of digits of the random number is less than the number of digits of the original data, an operation of adding 0 to the last digit of the random number is performed. 7. The encrypted data input method according to claim 5, if the number of digits of the random number is greater than that of the original data, the last digit of the random number is discarded. 8. An encrypted data input device, characterized in that it comprises: The first fingerprint acquisition module is used to acquire the first fingerprint input by the user; An encryption algorithm and random number acquisition module, configured to acquire a corresponding encryption algorithm in the database according to the first fingerprint, and generate a random number, wherein the random number is a multi-digit number; a random number display module, configured to display the random number; An encrypted data receiving module, configured to receive encrypted data input by the user, wherein the encrypted data is calculated by the user according to the random number, original data and a preset encryption algorithm. 9. The encrypted data input device according to claim 8, said encryption algorithm and random number acquisition module further comprising: a second fingerprint acquiring unit, configured to acquire the second fingerprint of the user; An encryption algorithm acquisition unit, configured to acquire an encryption algorithm; The database building unit is configured to store the second fingerprint, the encryption algorithm and their association, so as to create the database. 10. The encrypted data input device according to claim 8, said encryption algorithm and random number acquisition module further comprising: A fingerprint matching judging unit, configured to judge whether the first fingerprint matches the second fingerprint in the database; An encryption algorithm and random number acquisition unit, configured to acquire the encryption algorithm corresponding to the second fingerprint during matching, and generate a random number; The prompting unit is configured to prompt the user to input wrong fingerprints when there is no match.