U.S. flag   An unofficial archive of your favorite United States government website
Dot gov

Official websites do not use .rip
We are an unofficial archive, replace .rip by .gov in the URL to access the official website. Access our document index here.

Https

We are building a provable archive!
A lock (Dot gov) or https:// don't prove our archive is authentic, only that you securely accessed it. Note that we are working to fix that :)

Computer Security Resource Center

Computer Security Resource Center

This is an archive
(replace .gov by .rip)
    Glossary
A  |  B  |  C  |  D  |  E  |  F  |  G  |  H  |  I  |  J  |  K  |  L  |  M  |  N  |  O  |  P  |  Q  |  R  |  S  |  T  |  U  |  V  |  W  |  X  |  Y  |  Z

Block Cipher Algorithm

Definition(s):

  A family of functions and their inverse functions that is parameterized by cryptographic keys; the functions map bit strings of a fixed length to bit strings of the same length.
Source(s):
NIST SP 800-175B Rev. 1 under Block cipher algorithm

  A family of functions and their inverses that is parameterized by cryptographic keys; the functions map bit strings of a fixed length to bit strings of the same length.
Source(s):
NIST SP 800-38C

  A family of functions and their inverses that is parameterized by a cryptographic key; the function maps bit strings of a fixed length to bit strings of the same length.
Source(s):
NIST SP 800-67 Rev. 2
NIST SP 800-67 Rev. 1 [Superseded]

  A symmetric-key cryptographic algorithm that transforms one block of information at a time using a cryptographic key. For a block cipher algorithm, the length of the input block is the same as the length of the output block.
Source(s):
NIST SP 800-57 Part 1 Rev. 5 under Block cipher (algorithm)