181 search results - page 30 / 37 » Improving multi-tier security using redundant authentication |
IJNSEC
2007
13 years 7 months ago
2007
In this paper, we present a novel steganographic technique for hiding data in a kind of PDF texts. We first point out the secret channels in a kind of PDF English texts, which ar...
IEEECIT
2006
IEEE
14 years 1 months ago
2006
IEEE
— User authentication is still heavily reliant on the use of passwords, and the security problems associated with passwords are becoming more and more serious. The main causes of...
INFOCOM
2006
IEEE
14 years 1 months ago
2006
IEEE
— As the use of sensor networks increases, security in this domain becomes a very real concern. One fundamental aspect of providing confidentiality and authentication is key dis...
IH
2001
Springer
13 years 11 months ago
2001
Springer
We present a set of watermarking techniques for effective covert communication over an audio signal carrier. Watermark robustness is enabled using: (i) redundant spread-spectrum fo...
ISARCS
2010
13 years 9 months ago
2010
Abstract. Supervisory Control and Data Acquisition (SCADA) systems are migrating from isolated to highly-interconnected large scale architectures. In addition, these systems are in...