Block Cipher

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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. 

See  NIST SP 800-90A Rev. 1 under Block Cipher  for more information. 
 
 A parameterized family of permutations on bit strings of a fixed length; the parameter that determines the permutation is a bit string called the key. 

See   NIST SP 800-38D under Block Cipher and NIST SP 800-38F for more information. 
 
An algorithm for a parameterized family of permutations on bit strings of a fixed length. 

See  NIST SP 800-38B under Block Cipher for more information. 
 
An invertible symmetric-key cryptographic algorithm that operates on fixed-length blocks of input using a secret key and an unvarying transformation algorithm. The resulting output block is the same length as the input block. 

See  NIST SP 800-107 Rev. 1 under Block cipher for more information. 
 
 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. 

See  NIST SP 800-135 Rev. 1 and NIST SP 800-38A under Block Cipher for more information. 

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