ZUC stream cipher

ZUC is a stream cipher included in the Long Term Evolution standards used in 3GPP specifications for confidentiality and integrity . It is named after Zu Chongzhi, the fifth-century Chinese mathematician.

It uses a 16-stage linear feedback shift register with each stage in $\mathrm{G}\mathrm{F}(2^{31}-1)$ and produces a 32-bit word on each tick.

Further reading

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