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CRYPTO
2003
Springer
15 years 5 months ago
2003
Springer
We consider the fundamental problem of authenticated group key exchange among n parties within a larger and insecure public network. A number of solutions to this problem have bee...
CRYPTO
2003
Springer
15 years 5 months ago
2003
Springer
We revisit the definitions of zero-knowledge in the Common Reference String (CRS) model and the Random Oracle (RO) model. We argue that even though these definitions syntacticall...
EUROCRYPT
2003
Springer
15 years 5 months ago
2003
Springer
We introduce captcha, an automated test that humans can pass, but current computer programs can’t pass: any program that has high success over a captcha can be used to solve an u...
EUROCRYPT
2003
Springer
15 years 5 months ago
2003
Springer
A classical construction of stream ciphers is to combine several LFSRs and a highly non-linear Boolean function f. Their security is usually analysed in terms of correlation attack...
EUROCRYPT
2003
Springer
15 years 5 months ago
2003
Springer
Cryptographic computations are often carried out on insecure devices for which the threat of key exposure represents a serious concern. Forward security allows one to mitigate the...