79 search results - page 2 / 16 » Fair Blind Signatures without Random Oracles |
EUROCRYPT
2010
Springer
13 years 5 months ago
2010
Springer
We investigate the possibility to prove security of the well-known blind signature schemes by Chaum, and by Pointcheval and Stern in the standard model, i.e., without random oracle...
EUROCRYPT
2006
Springer
13 years 8 months ago
2006
Springer
We present the first aggregate signature, the first multisignature, and the first verifiably encrypted signature provably secure without random oracles. Our constructions derive f...
PKC
2007
Springer
13 years 11 months ago
2007
Springer
Abstract. Key-insulated cryptography is a crucial technique for protecting private keys. To strengthen the security of key-insulated protocols, Hanaoka, Hanaoka and Imai recently i...
ICICS
2007
Springer
13 years 11 months ago
2007
Springer
We propose a convertible undeniable signature scheme without random oracles. Our construction is based on the Waters signatures proposed in Eurocrypt 2005. The security of our sche...
DAM
2006
13 years 4 months ago
2006
We propose the concept of fine-grained forward-secure signature schemes. Such signature schemes not only provide non-repudiation w.r.t. past time periods the way ordinary forward-...