Security without identification: transaction systems to make big brother obsolete
Communications of the ACM
Journal of Cryptology
Preserving digital information forever
DL '00 Proceedings of the fifth ACM conference on Digital libraries
Communications of the ACM
A method for obtaining digital signatures and public-key cryptosystems
Communications of the ACM
Handbook of Applied Cryptography
Handbook of Applied Cryptography
Enabling the Archival Storage of Signed Documents
FAST '02 Proceedings of the Conference on File and Storage Technologies
Secure History Preservation Through Timeline Entanglement
Proceedings of the 11th USENIX Security Symposium
The LOCKSS peer-to-peer digital preservation system
ACM Transactions on Computer Systems (TOCS)
A fresh look at the reliability of long-term digital storage
Proceedings of the 1st ACM SIGOPS/EuroSys European Conference on Computer Systems 2006
The need for preservation aware storage: a position paper
ACM SIGOPS Operating Systems Review
Long Term Trusted Archive Services
ICDS '07 Proceedings of the First International Conference on the Digital Society
Preservation DataStores: Architecture for Preservation Aware Storage
MSST '07 Proceedings of the 24th IEEE Conference on Mass Storage Systems and Technologies
Pors: proofs of retrievability for large files
Proceedings of the 14th ACM conference on Computer and communications security
Provable data possession at untrusted stores
Proceedings of the 14th ACM conference on Computer and communications security
SafeStore: a durable and practical storage system
ATC'07 2007 USENIX Annual Technical Conference on Proceedings of the USENIX Annual Technical Conference
POTSHARDS: secure long-term storage without encryption
ATC'07 2007 USENIX Annual Technical Conference on Proceedings of the USENIX Annual Technical Conference
A survey of single-database private information retrieval: techniques and applications
PKC'07 Proceedings of the 10th international conference on Practice and theory in public-key cryptography
Space-efficient private search with applications to rateless codes
FC'07/USEC'07 Proceedings of the 11th International Conference on Financial cryptography and 1st International conference on Usable Security
Why traditional storage systems don't help us save stuff forever
HotDep'05 Proceedings of the First conference on Hot topics in system dependability
EuroPKI'05 Proceedings of the Second European conference on Public Key Infrastructure
POTSHARDS—a secure, recoverable, long-term archival storage system
ACM Transactions on Storage (TOS)
A comprehensive reference architecture for trustworthy long-term archiving of sensitive data
NTMS'09 Proceedings of the 3rd international conference on New technologies, mobility and security
Modeling long-term signature validation for resolution of dispute
TOSCA'11 Proceedings of the 2011 international conference on Theory of Security and Applications
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Long-term archival of signed documents presents specific challenges that do not need to be considered in short-term storage systems. In this paper we present a Secure Long-Term Archival System (SLTAS) that protects, in a verifiable way, the validity of today's digital signatures in a distant future. Moreover, our protocol is the first proposal that provides a proof of when a signature was created, without the possibility of backdating. We include a description of our scheme and an evaluation of its performance in terms of computing time and storage space. Finally, we discuss how to extend our system to achieve additional security properties. This paper does not focus on the long-term availability of archived information. nor on format migration problems.