Zuc stream cipher

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ZUC is a new stream cipher included in the Long Term Evolution standards starting in Release 11 for mobile devices.[1][2]

It uses a 16-stage Linear Feedback Shift Register (LFSR) with each stage in GF() and produces a 32-bit word on each tick.


  1. ^ [1] 3GPP Technical Specification 35.222
  2. ^ [2] Specification of the 3GPP Confidentiality and Integrity Algorithms 128-EEA3 & 128-EIA3: Document 2: ZUC Specification