Deterministic Random Bit Generator (DRBG)

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Abbreviation(s) and Synonym(s):

Deterministic random bit generator (DRBG)

NIST SP 800-106, NIST SP 800-107 Rev. 1

deterministic random number generator

NIST SP 800-106, NIST SP 800-107 Rev. 1

DRBG

NIST SP 800-57 Part 1 Rev. 3, NIST SP 800-57 Part 1 Rev. 4, NIST SP 800-78-4, NIST SP 800-90A Rev. 1, NIST SP 800-90B

Pseudorandom Number (or Bit) Generator

NIST SP 800-57 Part 1 Rev. 4

Pseudorandom Number Generator

NIST SP 800-57 Part 1 Rev. 4

Pseudorandom number generator (PRNG)

NIST SP 800-22 Rev. 1a, NIST SP 800-57 Part 1 Rev. 4, NIST SP 800-63-2

Pseudo-random Number Generator (PRNG)

NIST SP 800-106

Definition(s):

  See Deterministic random bit generator (DRBG).
Source(s):
NIST SP 800-57 Part 1 Rev. 4 [Superseded] under Pseudorandom number generator (PRNG)
NIST SP 800-57 Part 1 Rev. 5 under Pseudorandom number generator (PRNG)
NIST SP 800-57 Part 1 Rev. 3 [Superseded] under Pseudorandom number generator (PRNG)

  An RBG that includes a DRBG mechanism and (at least initially) has access to a randomness source. The DRBG produces a sequence of bits from a secret initial value called a seed, along with other possible inputs. A DRBG is often called a Pseudorandom Number (or Bit) Generator. Contrast with NRBG.
Source(s):
NIST SP 800-90A Rev. 1

  See Deterministic Random Bit Generator.
Source(s):
NIST SP 800-90A Rev. 1 under Pseudorandom Number Generator

  An RBG that includes a DRBG mechanism and (at least initially) has access to a source of entropy input. The DRBG produces a sequence of bits from a secret initial value called a seed, along with other possible inputs. A DRBG is often called a Pseudorandom Number (or Bit) Generator.
Source(s):
NIST SP 800-90B

  A random bit generator that includes a DRBG algorithm and (at least initially) has access to a source of randomness. The DRBG produces a sequence of bits from a secret initial value called a seed, along with other possible inputs. A cryptographic DRBG has the additional property that the output is unpredictable, given that the seed is not known. A DRBG is sometimes also called a Pseudo-random Number Generator (PRNG) or a deterministic random number generator.
Source(s):
NIST SP 800-57 Part 1 Rev. 4 [Superseded] under Deterministic random bit generator (DRBG)

  A random bit generator that includes a DRBG algorithm and (at least initially) has access to a source of randomness. The DRBG produces a sequence of bits from a secret initial value called a seed. A cryptographic DRBG has the additional property that the output is unpredictable given that the seed is not known. A DRBG is sometimes also called a pseudo-random number generator (PRNG) or a deterministic random number generator.
Source(s):
NIST SP 800-57 Part 1 Rev. 5 under Deterministic random bit generator (DRBG)

  An algorithm that produces a sequence of bits that are uniquely determined from an initial value called a seed. The output of the DRBG “appears” to be random, i.e., the output is statistically indistinguishable from random values. A cryptographic DRBG has the additional property that the output is unpredictable, given that the seed is not known. A DRBG is sometimes also called a Pseudo Random Number Generator (PRNG) or a deterministic random number generator.
Source(s):
NIST SP 800-57 Part 1 Rev. 3 [Superseded] under Deterministic random bit generator (DRBG)

Glossary Comments

Comments about specific definitions should be sent to the authors of the linked Source publication. For NIST publications, an email is usually found within the document.

Comments about the glossary's presentation and functionality should be sent to secglossary@nist.gov.

See NISTIR 7298 Rev. 3 for additional details.

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Deterministic Random Bit Generator (DRBG)

Glossary Comments