DAGSTUHL
2006
13 years 6 months ago
2006
It is well known that unconditionally secure bit commitment is impossible even in the quantum world. In this paper a weak variant of quantum bit commitment, introduced independent...
EUROCRYPT
1999
Springer
13 years 8 months ago
1999
Springer
We consider the problem of basing Oblivious Transfer (OT) and Bit Commitment (BC), with information theoretic security, on seemingly weaker primitives. We introduce a general model...
IMA
2003
Springer
13 years 9 months ago
2003
Springer
In extension of the bit commitment task and following work initiated by Crépeau and Kilian, we introduce and solve the problem of characterising the optimal rate at which a discr...
ASIACRYPT
2005
Springer
13 years 10 months ago
2005
Springer
We introduce a new cryptographic primitive called the blind coupon mechanism (BCM). In effect, the BCM is an authenticated bit commitment scheme, which is AND-homomorphic. It has n...