21 search results - page 3 / 5 » Cryptanalysis of Some Group-Oriented Proxy Signature Schemes |
JOC
2008
13 years 5 months ago
2008
We describe two different attacks against the iso/iec 9796-1 signature standard for RSA and Rabin. Both attacks consist in an existential forgery under a chosen-message attack: the...
EUROCRYPT
2004
Springer
13 years 11 months ago
2004
Springer
For the last two decades the notion and implementations of proxy signatures have been used to allow transfer of digital signing power within some context (in order to enable flexi...
ACISP
2003
Springer
13 years 9 months ago
2003
Springer
In some practical circumstances, the ability of a signer should be restricted. In group signature schemes, a group member may be allowed to generate signatures up to a certain numb...
CTRSA
2010
Springer
14 years 10 days ago
2010
Springer
Sanitizable signature schemes allow a semi-trusted entity to modify some specific portions of a signed message while keeping a valid signature of the original off-line signer. In...
CORR
2010
Springer
13 years 5 months ago
2010
Springer
The signcryption is a relatively new cryptographic technique that is supposed to fulfill the functionalities of encryption and digital signature in a single logical step. Although...