• computer science Do one-way functions exist? More unsolved problems in computer science In computer science, a one-way function is a function that is easy to...
    14 KB (1,956 words) - 16:22, 30 March 2025
  • Thumbnail for One-way compression function
    a one-way compression function is a function that transforms two fixed-length inputs into a fixed-length output. The transformation is "one-way", meaning...
    24 KB (3,977 words) - 11:37, 24 March 2025
  • Thumbnail for Trapdoor function
    functions are a special case of one-way functions and are widely used in public-key cryptography. In mathematical terms, if f is a trapdoor function,...
    9 KB (1,316 words) - 00:34, 25 June 2024
  • Thumbnail for Cryptographic hash function
    such that h = hash(m). This concept is related to that of a one-way function. Functions that lack this property are vulnerable to preimage attacks. Second...
    49 KB (6,299 words) - 15:10, 30 May 2025
  • Look up one-way in Wiktionary, the free dictionary. One-way or one way may refer to: One-way traffic, a street either facilitating only one-way traffic...
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  • In cryptography a universal one-way hash function (UOWHF, often pronounced "woof") is a type of universal hash function of particular importance to cryptography...
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  • predicate of a one-way function f is a predicate b (i.e., a function whose output is a single bit) which is easy to compute (as a function of x) but is...
    6 KB (859 words) - 23:41, 11 July 2024
  • exact one-third of an arbitrary angle. Hence the function which assigns the triple of an angle to a given angle can be thought of as a one-way function, the...
    4 KB (476 words) - 22:33, 19 April 2023
  • |f_{k}\rangle } In both cases f is a one-way quantum function that has the same properties as a classical one-way function. That is, the result is easy to...
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  • existence of pseudorandom generators is related to the existence of one-way functions through a number of theorems, collectively referred to as the pseudorandom...
    14 KB (1,933 words) - 18:11, 26 June 2023
  • exponent e when given b, c, and m – is believed to be difficult. This one-way function behavior makes modular exponentiation a candidate for use in cryptographic...
    21 KB (2,759 words) - 07:00, 17 May 2025
  • a prime number. However, they left open the problem of realizing a one-way function, possibly because the difficulty of factoring was not well-studied...
    60 KB (7,783 words) - 17:58, 20 June 2025
  • signatures is based on the security of the one-way hash function and the length of its output. For a hash function that generates an n-bit message digest...
    13 KB (2,017 words) - 21:47, 26 November 2024
  • Thumbnail for One-time password
    algorithm, credited to Leslie Lamport, uses a one-way function (call it f {\displaystyle f} ). This one-time password system works as follows: A seed...
    26 KB (3,542 words) - 03:44, 7 June 2025
  • Manuel Blum and Michael Shub that is derived from Michael O. Rabin's one-way function. Blum Blum Shub takes the form x n + 1 = x n 2 mod M {\displaystyle...
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  • that, commitment via one-way hash functions was considered, e.g., as part of, say, Lamport signature, the original one-time one-bit signature scheme....
    47 KB (7,701 words) - 08:55, 26 February 2025
  • Thumbnail for Physical unclonable function
    proposed in a general fashion by Pappu in 2001, under the name Physical One-Way Function (POWF), with the term PUF being coined in 2002, whilst describing the...
    35 KB (4,103 words) - 12:39, 23 May 2025
  • also uses one of two one-way functions, depending on the NTLM version; NT LanMan and NTLM version 1 use the DES-based LanMan one-way function (LMOWF),...
    29 KB (3,408 words) - 17:14, 6 January 2025
  • Thumbnail for Piecewise function
    ("subdomains") on which the function may be defined differently. Piecewise definition is actually a way of specifying the function, rather than a characteristic...
    10 KB (1,065 words) - 06:05, 17 May 2025
  • In this respect it is the hardware analog of a one-way function. The name "physical unclonable function" might be a little misleading as some PUFs are...
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  • have a one-way function, where there is either no restriction or no movement in one direction. Delay valves are usually color-coded to their function. 1988...
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  • been proven that pseudorandom generators can be constructed from any one-way function which are believed to exist. Pseudorandom generators are necessary...
    14 KB (1,864 words) - 00:22, 20 June 2025
  • refer to: Verifiable unpredictable function, a public-key one-way function in cryptography; see Verifiable random function Vänsterns Ungdomsförbund (lit. 'Youth...
    415 bytes (86 words) - 17:31, 2 February 2023
  • Thumbnail for Russell Impagliazzo
    include: the construction of a pseudorandom number generator from any one-way function, his proof of Yao's XOR lemma via "hard core sets", his proof of the...
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  • Thumbnail for RC5
    however, is more complex, expanding the key using an essentially one-way function with the binary expansions of both e and the golden ratio as sources...
    12 KB (1,465 words) - 18:48, 18 February 2025
  • mathematics, a function from a set X to a set Y assigns to each element of X exactly one element of Y. The set X is called the domain of the function and the...
    76 KB (11,410 words) - 20:15, 22 May 2025
  • Thumbnail for Public-key cryptography
    with cryptographic algorithms based on mathematical problems termed one-way functions. Security of public-key cryptography depends on keeping the private...
    40 KB (4,510 words) - 21:45, 23 June 2025
  • indicate that VMPC is not a good candidate for a cryptographic one-way function". The VMPC function is used in an encryption algorithm – the VMPC stream cipher...
    3 KB (427 words) - 10:22, 8 October 2024
  • Thumbnail for Michael Luby
    In cryptography he is known for his contributions showing that any one-way function can be used as the basis for private cryptography, and for his analysis...
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  • universal one-way function is a function that is known to be one-way if one-way functions exist. In mathematics, a universal function is one that contains...
    734 bytes (135 words) - 15:01, 16 December 2022