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Design and implementation of secure network file system

Author: YouDongHai
Tutor: LiuNaiZuo
School: University of Electronic Science and Technology
Course: Information Security
Keywords: File System Security services Stacked Linux
CLC: TP393.08
Type: Master's thesis
Year: 2011
Downloads: 41
Quote: 0
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Abstract


With the rapid development of the Internet and data storage technology , to share all kinds of data resources through the network has been very popular . However , in an open network environment , shared data secure network systems support . Network File System in Unix-like systems are often used , then there is a more serious security flaws . This paper designs and implements a secure network file system , named SNFS ( Secure Network File System ) . SNFS provide file data confidentiality, integrity protection and be able to authenticate the documents as visitors . SNFS using a stackable file system technology , which is located between the virtual file system and the underlying file system , and can be loaded into the operating system as a kernel component , so it has good versatility . Run through the standard system calls in applications above SNFS still to access the file , the perception of the presence of less than the file encryption and decryption operations , thus SNFS is transparent for applications , and has good usability . When SNFS use as a secure network file system , the the ciphertext data files , client directly through the network to access files on the file server , network transmission , only files of the ciphertext data , all file data is stored on the file server 's The encryption and decryption operations in the client kernel . Each file has its own symmetric key encryption key using the user's public key is stored in the file header , the user only through their own private key to decrypt the file key, before the encrypted file transparent read and write operations . , SNFS file data integrity protection , any tampering with the file data in the file server or network transmission process can be client aware . Finally , in this paper, analysis and evaluation a security in SNFS and to test its performance , by comparison with the existing major security file system , prove SNFS provide good security service for the underlying file system at the same time , also has a higher performance .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Computer network > General issues > Computer Network Security
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