Random oracles are practical: a paradigm for designing efficient protocols
CCS '93 Proceedings of the 1st ACM conference on Computer and communications security
Simple forward-secure signatures from any signature scheme
Proceedings of the 7th ACM conference on Computer and communications security
A method for obtaining digital signatures and public-key cryptosystems
Communications of the ACM
Foundations of Cryptography: Basic Tools
Foundations of Cryptography: Basic Tools
Handbook of Applied Cryptography
Handbook of Applied Cryptography
Identity-Based Encryption from the Weil Pairing
SIAM Journal on Computing
A Forward-Secure Digital Signature Scheme
CRYPTO '99 Proceedings of the 19th Annual International Cryptology Conference on Advances in Cryptology
Forward-Secure Signatures with Optimal Signing and Verifying
CRYPTO '01 Proceedings of the 21st Annual International Cryptology Conference on Advances in Cryptology
Digital Signcryption or How to Achieve Cost(Signature & Encryption)
CRYPTO '97 Proceedings of the 17th Annual International Cryptology Conference on Advances in Cryptology
Efficient Generic Forward-Secure Signatures with an Unbounded Number Of Time Periods
EUROCRYPT '02 Proceedings of the International Conference on the Theory and Applications of Cryptographic Techniques: Advances in Cryptology
A New Forward-Secure Digital Signature Scheme
ASIACRYPT '00 Proceedings of the 6th International Conference on the Theory and Application of Cryptology and Information Security: Advances in Cryptology
Efficient Authentication and Signing of Multicast Streams over Lossy Channels
SP '00 Proceedings of the 2000 IEEE Symposium on Security and Privacy
Time-lock Puzzles and Timed-release Crypto
Time-lock Puzzles and Timed-release Crypto
Guide to Elliptic Curve Cryptography
Guide to Elliptic Curve Cryptography
Introduction to Modern Cryptography (Chapman & Hall/Crc Cryptography and Network Security Series)
Introduction to Modern Cryptography (Chapman & Hall/Crc Cryptography and Network Security Series)
Compact sequential aggregate signatures
Proceedings of the 2007 ACM symposium on Applied computing
Extended Abstract: Forward-Secure Sequential Aggregate Authentication
SP '07 Proceedings of the 2007 IEEE Symposium on Security and Privacy
A Forward-Secure Public-Key Encryption Scheme
Journal of Cryptology
Low-cost Anonymous Timed-Release Encryption
IAS '07 Proceedings of the Third International Symposium on Information Assurance and Security
Forward-secure signatures in untrusted update environments: efficient and generic constructions
Proceedings of the 14th ACM conference on Computer and communications security
Proceedings of the 14th ACM conference on Computer and communications security
Performance of a Wireless Unattended Sensor Network in a Freshwater Environment
HICSS '08 Proceedings of the Proceedings of the 41st Annual Hawaii International Conference on System Sciences
Practical forward secure sequential aggregate signatures
Proceedings of the 2008 ACM symposium on Information, computer and communications security
Catch Me (If You Can): Data Survival in Unattended Sensor Networks
PERCOM '08 Proceedings of the 2008 Sixth Annual IEEE International Conference on Pervasive Computing and Communications
A New Approach to Secure Logging
Proceeedings of the 22nd annual IFIP WG 11.3 working conference on Data and Applications Security
POSH: Proactive co-Operative Self-Healing in Unattended Wireless Sensor Networks
SRDS '08 Proceedings of the 2008 Symposium on Reliable Distributed Systems
Timed-Release Encryption Revisited
ProvSec '08 Proceedings of the 2nd International Conference on Provable Security
DISH: Distributed Self-Healing
SSS '08 Proceedings of the 10th International Symposium on Stabilization, Safety, and Security of Distributed Systems
A new approach to secure logging
ACM Transactions on Storage (TOS)
BAF: An Efficient Publicly Verifiable Secure Audit Logging Scheme for Distributed Systems
ACSAC '09 Proceedings of the 2009 Annual Computer Security Applications Conference
Aggregate and verifiably encrypted signatures from bilinear maps
EUROCRYPT'03 Proceedings of the 22nd international conference on Theory and applications of cryptographic techniques
Forward-secure signatures with fast key update
SCN'02 Proceedings of the 3rd international conference on Security in communication networks
ISCIS'06 Proceedings of the 21st international conference on Computer and Information Sciences
Timed-release encryption with pre-open capability and its application to certified e-mail system
ISC'05 Proceedings of the 8th international conference on Information Security
Sequential aggregate signatures and multisignatures without random oracles
EUROCRYPT'06 Proceedings of the 24th annual international conference on The Theory and Applications of Cryptographic Techniques
Improved anonymous timed-release encryption
ESORICS'07 Proceedings of the 12th European conference on Research in Computer Security
ETA: efficient and tiny and authentication for heterogeneous wireless systems
Proceedings of the sixth ACM conference on Security and privacy in wireless and mobile networks
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Unattended Wireless Sensor Networks (UWSNs) operating in hostile environments face great security and performance challenges due to the lack of continuous real-time communication with the final data receivers (e.g., mobile data collectors). The lack of real-time communication forces sensors to accumulate sensed data possibly for long time periods, along with the corresponding authentication tags. It also makes UWSNs vulnerable to active adversaries, which can compromise sensors and manipulate the collected data. Hence, it is critical to have forward security property such that even if the adversary can compromise the current keying materials, she cannot forge authentication tags generated before the compromise. Forward secure and aggregate signature schemes are developed to address these issues. Unfortunately, existing schemes either impose substantial overhead, or do not allow public verifiability, thereby impractical for resource-constrained UWSNs. In this paper, we propose a new class of cryptographic schemes, referred to as Hash-BasedSequentialAggregate andForwardSecureSignature (HaSAFSS), which allows a signer to sequentially generate a compact, fixed-size, and publicly verifiable signature efficiently. We develop three HaSAFSS schemes, Symmetric HaSAFSS (Sym-HaSAFSS), Elliptic Curve Cryptography (ECC) based HaSAFSS (ECC-HaSAFSS) and self-SUstaining HaSAFSS (SU-HaSAFSS). These schemes integrate the efficiency of MAC-based aggregate signatures and the public verifiability of Public Key Cryptography (PKC)-based signatures by preserving forward security via Timed-Release Encryption (TRE). We demonstrate that our schemes are secure and also significantly more efficient than previous approaches.