A binary vector used as the input to initialize the algorithm for the encryption of a plaintext block sequence to increase security by introducing additional cryptographic variance and to synchronize cryptographic equipment. The initialization vector need not be secret. Some of the Triple Data Encryption Algorithm Modes of Operation require 3 initialization vectors.
See NIST SP 800-20 under Initialization Vector for more information.
See the following for more information:
NIST SP 800-20 under IV
NIST SP 800-38D under IV
A nonce that is associated with an invocation of authenticated encryption on a particular plaintext and AAD
See NIST SP 800-38D under Initialization Vector for more information.
A bit string that is used as an initial value in computing the first iteration of the PRF in feedback mode. It may be an empty string.
See NIST SP 800-108r1 under IV for more information.