File system encryption with integrated user management

Authors:
Stefan Ludwig;Winfried Kalfa
Affiliations:
Corporate Technology, Siemens AG, Munich;Chemnitz University of Technology
Venue:
ACM SIGOPS Operating Systems Review
Year:
2001

Citing 2
Cited 1

A cryptographic file system for UNIX

CCS '93 Proceedings of the 1st ACM conference on Computer and communications security
Encrypting virtual memory

SSYM'00 Proceedings of the 9th conference on USENIX Security Symposium - Volume 9

Integrated file-level cryptographical access control

Journal of Computing Sciences in Colleges

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Abstract

Existing cryptographic file systems for Unix do not take into account that sensitive data must often be shared with other users, but still kept secret. By design, the only one who has access to the secret data is the person who encrypted it and therefore knows the encryption key or password. This paper presents a kernel driver for a new encrypted file system, called Fairly Secure File System (FSFS), which provides mechanisms for user management and access control for encrypted files. The driver has been specifically designed with multi user systems in mind. FSFS also tries to prevent unintentional transfer of sensitive data to unencrypted file systems, where it would be stored in plaintext.