ZUC was a word-oriented stream cipher. The initial it requires a 128-bit key and a 128-bit initialization vector (IV) as input, and output a string of 32-bit words of the Keystream (so, each 32-bit word here referred to as a key word). Key can be used for encryption/decryption. IV initialization, that is, the clock controls password runs but does not produce output. The second stage is the stage of its work, at this stage, with each clock pulse, it produces an output <span style= font-size:10.5pt font-family: >32-bit words-ZUC was a word-oriented stream cipher. The initial it requires a 128-bit key and a 128-bit initialization vector (IV) as input, and output a string of 32-bit words of the Keystream (so, each 32-bit word here referred to as a key word). Key can be used for encryption/decryption. IV initialization, that is, the clock controls password runs but does not produce output. The second stage is the stage of its work, at this stage, with each clock pulse, it produces an output <span style= font-size:10.5pt font-family:　>32-bit words