555 search results - page 39 / 111 » From ABZ to Cryptography |
ACNS
2007
Springer
14 years 4 months ago
2007
Springer
In a proxy re-encryption scheme a semi-trusted proxy converts a ciphertext for Alice into a ciphertext for Bob without seeing the underlying plaintext. A number of solutions have ...
TCC
2007
Springer
14 years 4 months ago
2007
Springer
We present a lower bound on the round complexity of a natural class of black-box constructions of statistically hiding commitments from one-way permutations. This implies a Ω( n ...
ACNS
2005
Springer
14 years 3 months ago
2005
Springer
Digital signature systems provide a way to transfer trust from the public key to the signed data; this is used extensively within PKIs. However, some applications need a transfer o...
ACNS
2005
Springer
14 years 3 months ago
2005
Springer
Passwords are one of the most common cause of system break-ins, because the low entropy of passwords makes systems vulnerable to brute force guessing attacks (dictionary attacks). ...
HIP
2005
Springer
14 years 3 months ago
2005
Springer
A CAPTCHA which humans find to be highly legible and which is designed to resist automatic character–segmentation attacks is described. As first detailed in [BR05], these ‘Sc...