Mutually Independent Commitments
نویسندگان
چکیده
We study the two-party commitment problem, where two players have secret values they wish to commit to each other. Traditional commitment schemes cannot be used here because they do not guarantee independence of the committed values. We present three increasingly strong definitions of independence in this setting and give practical protocols for each. Our work is related to work in non-malleable cryptography. However, the two-party commitment problem can be solved much more efficiently than by using non-malleability techniques.
منابع مشابه
Mutually Independent Commitments
Computationally binding and perfectly hiding commitments can be constructed from GM-secure public-key encryptions. The main idea is to send an encryption of the message together with the public key. To decommit, we reveal the random bits used to encrypt the message. In fact, one-way functions suffice to construct computationally binding and perfectly hiding commitments. Perfectly binding and co...
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