Cryptographic File Systems Performance: What You Don't Know Can Hurt You
SISW '03 Proceedings of the Second IEEE International Security in Storage Workshop
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Proceedings of the 2005 ACM SIGMOD international conference on Management of data
A Versatile and User-Oriented Versioning File System
FAST '04 Proceedings of the 3rd USENIX Conference on File and Storage Technologies
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Proceedings of the 2005 ACM workshop on Storage security and survivability
Adding Secure Deletion to Your Favorite File System
SISW '05 Proceedings of the Third IEEE International Security in Storage Workshop
File System Design with Assured Delete
SISW '05 Proceedings of the Third IEEE International Security in Storage Workshop
Communications of the ACM - Music information retrieval
On incremental file system development
ACM Transactions on Storage (TOS)
Secure deletion for a versioning file system
FAST'05 Proceedings of the 4th conference on USENIX Conference on File and Storage Technologies - Volume 4
Secure data deletion for Linux file systems
SSYM'01 Proceedings of the 10th conference on USENIX Security Symposium - Volume 10
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SSYM'04 Proceedings of the 13th conference on USENIX Security Symposium - Volume 13
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SSYM'96 Proceedings of the 6th conference on USENIX Security Symposium, Focusing on Applications of Cryptography - Volume 6
SSYM'96 Proceedings of the 6th conference on USENIX Security Symposium, Focusing on Applications of Cryptography - Volume 6
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ATEC '00 Proceedings of the annual conference on USENIX Annual Technical Conference
Secure deletion for NAND flash file system
Proceedings of the 2008 ACM symposium on Applied computing
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ACM Computing Surveys (CSUR)
Data node encrypted file system: efficient secure deletion for flash memory
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OSDI'12 Proceedings of the 10th USENIX conference on Operating Systems Design and Implementation
TrueErase: per-file secure deletion for the storage data path
Proceedings of the 28th Annual Computer Security Applications Conference
Proceedings of the 2013 ACM SIGSAC conference on Computer & communications security
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This paper has three goals. (1) We try to debunk several held misconceptions about secure deletion: that encryption is an ideal solution for everybody, that existing data-overwriting tools work well, and that securely deleted files must be overwritten many times. (2) We discuss new and important issues that are often neglected: secure deletion consistency in case of power failures, handling versioning and journalling file systems, and metadata overwriting. (3) We present two solutions for on-demand secure deletion. First, we have created a highly portable and flexible system that performs only the minimal amount of work in kernel mode. Second, we present two in-kernel solutions in the form of Ext3 file system patches that can perform comprehensive data and metadata overwriting. We evaluated our proposed solutions and discuss the trade-offs involved.