Bit commitment scheme
WebAug 22, 2014 · Institute of Telecommunications Abstract and Figures In classical cryptography, the bit commitment scheme is one of the most important primitives. We … WebMay 4, 1997 · The proof can be based on any bit commitment scheme with a particular set of properties. We suggest an efficient implementation based on factoring. We also present a 4-move perfect zero-knowledge interactive argument for any NPlanguage L. On input x ∈ L, the communication complexity is O( x c) · max(k, l) bits, where l is the security ...
Bit commitment scheme
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WebJan 2, 1994 · It is shown that the existence of a statistically hiding bit commitment scheme with noninteractive opening and public verifiability implies theexistence of fail-stop signatures, and that such signatures can now be based on any one-way permutation. We show that the existence of a statistically hiding bit commitment scheme with … Commitment schemes have important applications in a number of cryptographic protocols including secure coin flipping, zero-knowledge proofs, and secure computation. A way to visualize a commitment scheme is to think of a sender as putting a message in a locked box, and giving the box to a receiver. See more A commitment scheme is a cryptographic primitive that allows one to commit to a chosen value (or chosen statement) while keeping it hidden to others, with the ability to reveal the committed value later. Commitment … See more A commitment scheme can either be perfectly binding (it is impossible for Alice to alter her commitment after she has made it, even if she has unbounded computational … See more It is an interesting question in quantum cryptography if unconditionally secure bit commitment protocols exist on the quantum level, that is, protocols which are (at least … See more Coin flipping Suppose Alice and Bob want to resolve some dispute via coin flipping. If they are physically in the same place, a typical procedure might be: See more Formal definitions of commitment schemes vary strongly in notation and in flavour. The first such flavour is whether the commitment scheme provides perfect or computational … See more Some commitment schemes permit a proof to be given of only a portion of the committed value. In these schemes, the secret value See more Physical unclonable functions (PUFs) rely on the use of a physical key with internal randomness, which is hard to clone or to emulate. Electronic, … See more
WebThe main problem of this scheme is that all voters should be involved in the ballot counting process due to in the counting stage the authority needs the help of each voter to open the ballot in the bit-commitment scheme. A new scheme has been proposed in to improve voting scheme based on blind signatures [26]. In addition, the threshold encryption WebNov 18, 2014 · This Letter revisits a previously proposed scheme that realizes bit commitment using only classical communication and proposes a novel multiround scheme based on finite-field arithmetic that extends the commitment time beyond this limit, and proves its security against classical attacks. Bit commitment is a fundamental …
WebMar 23, 2013 · In general, a scheme can not be both perfectly hiding and perfectly binding, because they are opposing principles: If Alice was computationally unbound, hiding … WebNov 3, 1993 · A complete protocol for bit commitment based on the transmission of polarized photons is described and it is shown that under the laws of quantum physics, this protocol cannot be cheated by either party except with exponentially small probability. We describe a complete protocol for bit commitment based on the transmission of polarized …
WebCommitment schemes are designed so that a party cannot change the value or statement after they have committed to it: that is, commitment schemes are binding. Commitment schemes have important applications in a number of cryptographic protocols including secure coin flipping, zero-knowledge proofs, and secure computation.
WebCommitment schemes have important applications in a number of cryptographic protocols including secure coin flipping, zero-knowledge proofs, and secure computation. A way to … shuttle court lengthWebApr 1, 2024 · Bit commitment, used in a wide range of cryptographic protocols (e.g. zero-knowledge proof, multiparty secure computation, and oblivious transfer), consists of two … the paper roWebIn order to build such an equivocal and extractable commitment scheme, in the standard model (without random oracles), let us start with two commitment schemes: an equivocal bit-commitment scheme Commit eq(b;r), for a bit b 2f0;1gand random coins r, that outputs a commitment c, and the opening value d 2f0;1g2k; 2 the paper ron howardWebBit Commitment - from any One Way Permutations. Ask Question. Asked 6 years, 1 month ago. Modified 6 years, 1 month ago. Viewed 324 times. 2. In the Wiki Page on … shuttle cos to denWebOct 29, 2015 · Bit commitment schemes are at the basis of modern cryptography. Since information-theoretic security is impossible both in the classical and in the quantum … the paper republicWebNov 29, 2024 · A complexity-based canonical (non-interactive) quantum bit commitment scheme refers to a kind of scheme such that the commitment consists of just a single … the paper rollWebJan 1, 2006 · This paper proposes a bit commitment scheme, BC(·), and efficient statistical zero knowledge (in short, SZK) protocols in which, for any given multi-variable polynomial f(X 1,..,X t) and any given modulus n, prover P gives (I 1,..,I t) to verifier V and can convince V that V knows (x 1,..,x t) satisfying f(x 1,..,x t) = 0 (mod n) and I i = BC ... the paper ron howard date