Computer Security Resource Center

Computer Security Resource Center

Computer Security
Resource Center

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AddRoundKey()

Abbreviation(s) and Synonym(s):

None

Definition(s):

  Transformation in the Cipher and Inverse Cipher in which a Round Key is added to the State using an XOR operation. The length of a Round Key equals the size of the State (i.e., for Nb = 4, the Round Key length equals 128 bits/16 bytes).
Source(s):
FIPS 197