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ISW
2005
Springer
15 years 11 months ago
Universally Composable Time-Stamping Schemes with Audit
Abstract. We present a universally composable time-stamping scheme based on universal one-way hash functions. The model we use contains an ideal auditing functionality (implementab...
Ahto Buldas, Peeter Laud, Märt Saarepera, Jan...
ACISP
2001
Springer
15 years 10 months ago
Improving the Availability of Time-Stamping Services
We discuss the availability questions that arise when digital time stamps are used for preserving the evidentiary value of electronic documents. We analyze the time-stamping protoc...
Arne Ansper, Ahto Buldas, Märt Saarepera, Jan...
ASIACRYPT
2000
Springer
15 years 10 months ago
Cryptanalytic Time/Memory/Data Tradeoffs for Stream Ciphers
In 1980 Hellman introduced a general technique for breaking arbitrary block ciphers with N possible keys in time T and memory M related by the tradeoff curve TM2 = N2 for 1 T N. ...
Alex Biryukov, Adi Shamir
INFORMATICALT
1998
96views more  INFORMATICALT 1998»
15 years 6 months ago
State Estimation of Dynamic Systems in the Presence of Time-Varying Outliers in Observations
Abstract. In the previous papers (Masreliez and Martin, 1977; Novoviˇcova, 1987; Schick and Mitter, 1994) the problem of recursive estimation of linear dynamic systems parameters ...
Rimantas Pupeikis
ICIAR
2009
Springer
15 years 4 months ago
Real-Time Image-Based Motion Detection Using Color and Structure
Abstract. In this paper we propose a method for automating the process of detecting regions of motion in a video sequence in real time. The main idea of this work is to detect moti...
Manali Chakraborty, Olac Fuentes