985 search results - page 24 / 197 » On the validity of digital signatures |
ACNS
2004
Springer
14 years 16 days ago
2004
Springer
The concept of group signature allows a group member to sign message anonymously on behalf of the group. In the event of a dispute, a designated entity can reveal the identity of a...
ICISC
2001
13 years 10 months ago
2001
Motivated by emerging needs in online interactions, we define a new type of digital signature called a `Content Extraction Signature' (CES). A CES allows the owner, Bob, of a...
MTA
2007
13 years 8 months ago
2007
This paper addresses the problem of ensuring the integrity of a digital video and presents a scalable signature scheme for video authentication based on cryptographic secret sharin...
ASIACRYPT
2011
Springer
12 years 8 months ago
2011
Springer
We provide constructions of (m, 1)-programmable hash functions (PHFs) for m ≥ 2. Mimicking certain programmability properties of random oracles, PHFs can, e.g., be plugged into ...
MFCS
1990
Springer
14 years 25 days ago
1990
Springer
We introduce the notion of associative one-way functions and prove that they exist if and only if P 6= NP. As evidence of their utility, we present two novel protocols that apply ...