985 search results - page 23 / 197 » On the validity of digital signatures |
ICCSA
2005
Springer
14 years 2 months ago
2005
Springer
In resent years, Popescu proposed several group signature schemes based on the Okamoto-Shiraishi assumption in [8–11], and claimed his schemes are secure. However, this paper dem...
CISC
2008
Springer
13 years 10 months ago
2008
Springer
The notion of anonymous signatures has recently been formalized by [18], which captures an interesting property that a digital signature can sometimes hide the identity of the sign...
IJNSEC
2008
13 years 8 months ago
2008
The devastating consequence of secret key exposure in digital signature is that any signature can be forged and cannot be trusted. To mitigate the damage of secret key exposure, f...
ISW
1997
Springer
14 years 28 days ago
1997
Springer
This paper will show that Hsu and Wu’s efficient nonrepudiable threshold proxy signature scheme with known signers and Yang, Tzeng and Hwang’s efficient nonrepudiable threshol...
ISW
1997
Springer
14 years 10 days ago
1997
Springer
Signcryption is a new paradigm in public key cryptography that simultaneously fulfills both the functions of digital signature and public key encryption in a logically single step,...