SFTP multi-terminal file secure transmission method and system based on national cryptographic algorithm
A national secret algorithm and secure transmission technology, which is applied in the field of SFTP multi-terminal file secure transmission based on the national secret algorithm, can solve the problems of information interception and content tampering, achieve high security intensity, reduce the risk of being deciphered and tampered, The effect of fast operation speed
Pending Publication Date: 2022-04-12
中国东盟信息港股份有限公司
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[0004] However, during the entire data output process, the file processing application is often not deployed on the SFTP server, the file content is generated and uploaded to SFTP, and the file is downloaded from SFTP and transferred to the processing application. In this process, information is still intercepted and content is blocked. The risk of tampering, file data interaction in the Internet scene requires a secure transmission method that can prevent data leakage during file transmission and ensure the reliability and accuracy of file transmission
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[0039] The present invention will be further described below in conjunction with the specific embodiments in the accompanying drawings.
[0040] refer to figure 1 , 2 , a method for SFTP multi-terminal secure file transfer based on national secret algorithm, comprising:
[0041] Construct the corresponding SFTP file directory for each consumer client on the SFTP server. The SFTP server is used to implement file transfer with the file consumer client. Since data interaction with multiple file consumer clients is required, the corresponding SFTP file is constructed. The file directory can prevent data files belonging to consumer clients from being downloaded or tampered with by other consumer clients;
[0042] Set the ssh private key and public key used by the consumer client connection, specifically, the SFTP server executes the sftp.sh script, and uses ssh-keygen to generate the RSA public key id_rsa_U corresponding to each consumer client i .pub and private key id_rsa_U i...
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The invention discloses an SFTP multi-terminal file secure transmission method based on a national cryptographic algorithm, relates to the technical field of information, and solves the technical problem of insufficient file transmission security. The method comprises the following steps: constructing a corresponding SFTP file directory for each consumption client at an SFTP server; setting an ssh private key and a public key connected and used by the consumption client; abstracting the original content Y of the file by using an SM3 algorithm at the consumption client; signing the file abstract Y'by using a private key d of SM2; encrypting the original content Y of the file by using an SM4ECB mode; assembling the http message and sending the http message to the SFTP server side; receiving data at the SFTP server side, sequentially performing signature verification and verification, and re-encrypting the original content of the file to obtain a ciphertext file; and storing the ciphertext file in an SFTP file directory for a consumption client to request downloading. The invention further discloses a system applying the method. According to the invention, data leakage in the file transmission process can be prevented, and the reliability and accuracy of file transmission are guaranteed.
Description
technical field [0001] The present invention relates to the field of information technology, more specifically, it relates to a method and system for secure transmission of SFTP multi-terminal files based on national secret algorithm. Background technique [0002] With the continuous development of science and technology, the transformation of enterprises to the direction of digitalization has become a global trend. There are more and more scenarios for processing and interacting data through information technology, making data transmission security an important issue that needs to be faced. Lack of data transmission security will cause serious damage to production, operation, personal assets, personal privacy and other aspects. [0003] FTP and SFTP are two of the most commonly used file transfer methods. FTP (File Transfer Protocol, File Transfer Protocol) is based on the TCP / IP protocol and does not provide a secure channel to transfer files between hosts. Passwords and...
Claims
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Login to View More IPC IPC(8): H04L67/06H04L9/32H04L9/30H04L9/40
Inventor 陈智超邓建财方凯德张珊珊蓝予
Owner 中国东盟信息港股份有限公司