Symmetric Key

March 5, 2018

Symmetric Key

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A cryptographic key that is used to perform both the cryptographic operation and its inverse, for example to encrypt and decrypt, or create a message authentication code and to verify the code.
SOURCE: SP 800-63; CNSSI-4009

A single cryptographic key that is used with a secret (symmetric) key algorithm.
SOURCE: SP 800-21 [2nd Ed]