- pseudorandom function
- мат. псевдослучайная функция
Большой англо-русский и русско-английский словарь. 2001.
pseudorandom function
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Pseudorandom function family — In cryptography, a pseudorandom function family, abbreviated PRF, is a collection of efficiently computable functions which emulate a random oracle in the following way: No efficient algorithm can distinguish (with significant advantage) between… … Wikipedia
Naor-Reingold Pseudorandom Function — In 1997, Moni Naor and Omer Reingold described efficient constructions for various cryptographic primitives in private key as well as public key cryptography. Their result is the construction of an efficient pseudorandom function. Let p and l be… … Wikipedia
Pseudorandom generator — In theoretical computer science, a pseudorandom generator is a deterministic method of generating a large amount of pseudorandom, or apparently random, data, from a small amount of initial random data. The initial data is commonly known as a… … Wikipedia
Pseudorandom permutation — In cryptography, a pseudorandom permutation, abbreviated PRP, is an idealized block cipher. It means the cipher that cannot be distinguished from a random permutation (that is, a permutation selected at random with uniform probability, from the… … Wikipedia
Pseudorandom generator theorem — In computational complexity a distribution is considered pseudorandom if no efficient computation can distinguish it from the true uniform distribution by a non negligible advantage. Formally, a family of distributions Dn is pseudorandom if for… … Wikipedia
Pseudorandom number generator — A pseudorandom number generator (PRNG), also known as a deterministic random bit generator (DRBG),[1] is an algorithm for generating a sequence of numbers that approximates the properties of random numbers. The sequence is not truly random in… … Wikipedia
Pseudorandom binary sequence — A binary sequence (BS) is a sequence of N bits, :a j for j=0,1,...,N 1, i.e. m ones and N m zeros. A BS is pseudo random (PRBS) if its autocorrelation function :C(v)=sum {j=0}^{N 1} a ja {j+v}has only two values::C(v)=egin{cases}m, mbox{ if }… … Wikipedia
One-way function — Unsolved problems in computer science Do one way functions exist? In computer science, a one way function is a function that is easy to compute on every input, but hard to invert given the image of a random input. Here easy and hard are to be… … Wikipedia
Cryptographic hash function — A cryptographic hash function (specifically, SHA 1) at work. Note that even small changes in the source input (here in the word over ) drastically change the resulting output, by the so called avalanche effect. A cryptographic hash function is a… … Wikipedia
Cryptographically secure pseudorandom number generator — A cryptographically secure pseudo random number generator (CSPRNG) is a pseudo random number generator (PRNG) with properties that make it suitable for use in cryptography. Many aspects of cryptography require random numbers, for example: Key… … Wikipedia
Pure function — In computer programming, a function may be described as pure if both these statements about the function hold: # The function always evaluates the same result value given the same argument value(s). The function result value cannot depend on any… … Wikipedia
