985 search results - page 24 / 197 » On the validity of digital signatures |
ACNS
2004
Springer
15 years 3 months 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...
100
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ICISC
2001
15 years 1 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
14 years 11 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...
134
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ASIACRYPT
2011
Springer
13 years 11 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
15 years 3 months 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 ...