Bit commitment using pseudo-randomness
Webpseudo-random generator, a bit t commitmen proto col can b e constructed. This is er eak w condition, since ao Y ao] [Y has wn sho that pseudo-random generators can b e … http://short.iacr.org/cryptodb/data/paper.php?pubkey=1573
Bit commitment using pseudo-randomness
Did you know?
WebBit Commitment Using Pseudo-Random-Sequence Generators In document Foreword by Whitfield DiffiePrefaceAbout the AuthorChapter 1—Foundations (Page 137-140) This … WebJan 1, 2005 · M. Naor, Bit commitment using pseudo-randomness, J. Cryptology, vol. 4, pp. 151-158, 1991. M. Naor and K. Nissim, Communication preserving protocols for secure function evaluation, Proc. 33rd STOC, pp. 590-599, 2001.
WebBit Commitment Using Pseudo-Randomness; Article . Free Access. Share on. Bit Commitment Using Pseudo-Randomness. Author: Moni Naor. View Profile. Authors … WebMar 16, 2010 · Once we have n bits, we use a PRNG (Pseudo-Random Number Generator) to crank out as many bits as necessary. A PRNG is said to be cryptographically secure if, assuming that it operates over a wide enough unknown n -bit key, its output is computationally indistinguishable from uniformly random bits.
Webpseudorandom permutations [11], statistically binding bit commitment [13], and many more. Such a pseudorandom generator can be obtained from an arbitrary one-way function, as shown in [6]. The given construction is not efficient enough to be used in practice, as it requires O(n8) bits of input randomness (for example, if WebThis paper presents two practical message commitment schemes: one is suitable for committing many bits, and another is useful for committing any bit-long message. They …
WebAug 22, 2009 · This paper deals with generic transformations from ID-based key encapsulation mechanisms (IBKEM) to hybrid public-key encryption (PKE). The best generic transformation known until now is by Boneh and Katz and requires roughly 704-bit overhead in the ciphertext. We present new generic transformations that are applicable to …
WebFeb 5, 1999 · Pseudorandom generators are fundamental to many theoretical and applied aspects of computing. We show how to construct a pseudorandom generator from any oneway function. Since it is easy to... solar water heater mauiWebFeb 1, 2000 · Bit commitment using pseudo-randomness Proc. of Crypto'89, Lecture Notes in Computer Science, 435, Springer-Verlag, Berlin ( 1990) p. 128–136 Google Scholar Oka96 T. Okamoto, On relationships between statistical zero-knowledge proofs, in Proc. of STOC'96, 1986, pp. 649–658. Google Scholar Ore87 slytherin amulettWebDec 24, 2024 · If e.g. one had a pseudo-random number generator whose initial state was completely unpredictable, and which could be treated as a random oracle unless someone had access to about two billion consecutive bits, and a program used it to produce 10,000 bits, that would be fine if nobody else could get more numbers based upon the same … solar water heater netherlandsWebNov 11, 2024 · where xᵢ · λᵢ is a bit string, result of the concatenation between the bit string xᵢ and the single bit λᵢ. The H function generates a one bit longer sequence from the initial seed. By calling the H function l(k) times and taking just the last bit from each iteration, we have generated a sequence of l(k) bits. Obviously this function is G.. We are now able to … slytherin and gryffindor friendshipWebExample 2 (Bit commitment from a pseudo-random generator [Nao91]). Let Rbe a PRG from nbits to 3n bits and suppose Alice wishes to commit a bit b. 1. Bob selects a … slytherin and gryffindor mixWebMar 18, 2001 · Our cryptosystem is the first proven to be secure against a strong type of chosen ciphertext attack proposed by Rackoff and Simon, in which the attacker knows the ciphertext she wishes to break and... solar water heater not circulating glycolIn 1991 Moni Naor showed how to create a bit-commitment scheme from a cryptographically secure pseudorandom number generator. The construction is as follows. If G is pseudo-random generator such that G takes n bits to 3n bits, then if Alice wants to commit to a bit b: Bob selects a random 3n-bit … 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 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 $${\displaystyle X}$$ is a vector of many … 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, optical and other types of PUFs have … 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: 1. Alice "calls" the coin flip 2. Bob flips the coin 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 slytherin and hufflepuff wallpaper