71 search results - page 12 / 15 » On the security of a class of image encryption schemes |
ACISP
2005
Springer
14 years 1 months ago
2005
Springer
We present the first group signature scheme with provable security and signature size O(λ) bits where the group manager, the group members, and the Open Authority (OA) are all id...
IJIT
2004
13 years 8 months ago
2004
In this paper we investigate the watermarking authentication when applied to medical imagery field. We first give an overview of watermarking technology by paying attention to frag...
ICIP
2005
IEEE
14 years 9 months ago
2005
IEEE
This paper presents a novel Mod-4 steganographic method in discrete cosine transform (DCT) domain. A group of 2?2 quantized DCT coefficients (GQC) is selected as the valid embeddi...
ESORICS
2010
Springer
13 years 8 months ago
2010
Springer
We present a formal, symbolic definition of election verifiability for electronic voting protocols in the context of the applied pi calculus. Our definition is given in terms of bo...
PKC
1999
Springer
13 years 11 months ago
1999
Springer
One of the key directions in complexity theory which has also filtered through to cryptographic research, is the effort to classify related but seemingly distinct notions. Separa...