CN111130755B

CN111130755B - Matrix double encryption method based on signature

Info

Publication number: CN111130755B
Application number: CN201911394658.4A
Authority: CN
Inventors: 杨兴荣; 胡勇; 杨兴海; 廖毅; 朱恒; 刘洋; 邓孔祥; 王芳; 王龙; 漆国强; 刘冬洋
Original assignee: Shijihengtong Technology Co ltd
Current assignee: Shijihengtong Technology Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2023-05-09
Anticipated expiration: 2039-12-30
Also published as: CN111130755A

Abstract

The invention discloses a matrix double encryption method based on signature, which comprises a data encryption method and a data decryption method; the encryption process is used in a data transmission stage, and the decryption process is used in a data completion stage; encrypting data by a secret key, and then converting the secret key into a signature matrix by a convention matrix to achieve the aim of data encryption transmission; after the server side receives the signature data and the encrypted data, the server side can decrypt the original data through the signature data; the invention ensures the safety of data in the data transmission process and greatly reduces the possibility of information leakage.

Description

Matrix double encryption method based on signature

Technical Field

The invention belongs to the field of information security, and particularly relates to a matrix double encryption method based on signature.

Background

With the rapid development of the internet, the application range of the internet is continuously expanded, and the idea of adding the internet is also permeated into various fields. However, the information is developed at a high speed like a double-edged sword, so that convenience is brought, meanwhile, the possibility of information leakage is also brought, and the information security is ensured to be more and more valued by enterprises. Ensuring the reliability of encrypted data during data transmission is an effective method for solving the information security problem.

Disclosure of Invention

The invention aims to: the invention provides a signature-based matrix double encryption method which ensures data security and greatly reduces information leakage.

The technical scheme is as follows: a matrix double encryption method based on signature comprises a data encryption method and a data decryption method; the data encryption method comprises the steps of generating a secret key, and encrypting original data by using the secret key, so that the original data is converted into encrypted data; after the data plaintext is encrypted, the data decryption can be performed after the signature data is converted by the key matrix; the signature is matrixed, and the matrixing process is the same as above, so that a converted matrix is obtained; the signature data is a data string obtained by converting a key and a key matrix, and is transmitted together with the ciphertext; the key matrix is a digital matrix obtained after the key data is coded and converted, and the key matrix is a matrix agreed by an encryption end and a decryption end and is used for analyzing intermediate data of a real key.

Specifically, the key data is transcoded to 0 to 9 and the letters a to z are correspondingly converted to the corresponding numbers.

Specifically, in the data encryption method, a 128-bit key is generated, and the original data is subjected to AES encryption by using the key.

More specifically, in the data encryption method, the key needs to be subjected to matrix conversion, after a matrix key matrix is obtained, the matrix is multiplied by a decryption matrix agreed with a decryption end, so that the 128-bit key is subjected to encryption processing, and the signature obtained after the key encryption is random.

Specifically, when the data is decrypted, the agreed matrix is inverted, the inverted matrix is multiplied by the signature matrix to obtain the key original matrix, and the 128-bit key can be reversely obtained through the inversion coding of the key original matrix.

More specifically, the inversely solved key is carried into the AES decryption algorithm to parse out the original data of the ciphertext.

The beneficial effects are that: compared with the prior art, the invention has the advantages that: in the data transmission process, the data security is ensured, the possibility of information leakage is reduced, and the method adopts twice encryption to greatly increase the security of encrypted ciphertext; and the agreed decryption matrix and the agreed matrix conversion coding are adopted, so that the possibility that the signature password is converted into a matrix key is reduced.

Drawings

Fig. 1 is a flow chart of the encryption of the present invention.

Fig. 2 is a decryption flow chart of the present invention.

Detailed Description

The invention is further elucidated below in connection with the drawings and the detailed description.

As shown in fig. 1, a signature-based matrix double encryption method includes a data encryption method and a data decryption method; the data encryption method comprises the steps of generating a secret key, and encrypting original data by using the secret key, so that the original data is converted into encrypted data; after the data plaintext is encrypted, the data decryption can be performed after the signature data is converted by the key matrix; the signature is matrixed, and the matrixing process is the same as above, so that a converted matrix is obtained; the signature data is a data string obtained by converting a key and a key matrix, and is transmitted together with the ciphertext; the key matrix is a digital matrix obtained after the key data is coded and converted, and the key matrix is a matrix agreed by an encryption end and a decryption end and is used for analyzing intermediate data of a real key.

In terms of the process, the encryption flow is used in the data transmission stage, the decryption flow is used in the data completion stage, and in order to prevent the leakage of the novel data in the transmission process, the decryption can be normally used for returning the data to the original state.

The specific operation is as follows:

in the encryption stage, a 128-bit key is first randomly generated, and the original data is AES-encrypted with the key, whereby the original data is converted into encrypted data. In addition, the key is converted into matrix, the conversion condition is that each character of the matrix key is digitized, the digital conversion is that a coding table is used for converting the characters into digits, such as 0 to 9 and a character a into an integer set of corresponding set bits (-18, 18), and the matrix corresponding to the 128-bit key is 16 multiplied by 8.

In the decryption stage, firstly, the signature is matrixed and matrixed process is the same as the above to obtain a converted matrix, the agreed matrix is inverted, then the inverted matrix is multiplied by the signature matrix to obtain a key original matrix, and the key of 128 bits can be reversely obtained through the inversion coding of the key original matrix; and finally, the secret key is brought into an AES decryption algorithm to analyze the original data of the ciphertext.

By the encryption method and the decryption method, plaintext and original data are encrypted and packaged when the data are transmitted, and a receiving end decrypts the data by a decryption method after receiving the data, so that the safety of the data in the transmission process is effectively ensured.

Claims

1. A matrix double encryption method based on signature is characterized in that: in the encryption stage, firstly, randomly generating a 128-bit key, carrying out AES encryption on original data by using the key, so that the original data is converted into encrypted data, carrying out matrix conversion on the key, wherein the conversion condition is that each character of the matrix key is digitized, the digitalization is that the character is converted into a number by using an encoding table, the matrix corresponding to the 128-bit key is 16 multiplied by 8, after the matrix of the key after the matrixing is obtained, the matrix is multiplied by a decryption matrix agreed with a decryption end, the 128-bit key is subjected to encryption processing, and because the key is randomly generated, the signature after the key encryption is obtained is different, and finally, the signature data and the encrypted ciphertext are transmitted together; in the decryption stage, firstly, the signature is matrixed and matrixed process is the same as the above to obtain a converted matrix, the agreed matrix is inverted, then the inverted matrix is multiplied by the signature matrix to obtain a key original matrix, and the key of 128 bits can be reversely obtained through the inversion coding of the key original matrix; and finally, the secret key is brought into an AES decryption algorithm to analyze the original data of the ciphertext.

2. A signature-based matrix double encryption method according to claim 1, characterized in that:

the key data is transcoded to 0 to 9 and the letters a to z are correspondingly converted to corresponding numbers.