AEAD Modes for ZUC Family Stream Ciphers
This work addresses the need for efficient and secure authenticated encryption modes for ZUC stream ciphers, which is incremental as it adapts existing frameworks to these specific ciphers.
The paper tackles the problem of improving efficiency for ZUC family stream ciphers by proposing two AEAD modes, ZUC-GXM and ZUC-MUR, which are designed for ZUC-128 and ZUC-256, with the latter offering nonce misuse-resistance for robust applications.
In order to improve the efficiency of using ZUC primitives, we give two AEAD (Authenticated Encryption with Associated Data) modes for them, ZUC-GXM and ZUC-MUR. They are suitable for ZUC (ZUC-128) and two cases of ZUC-256. The former is a nonce-based AEAD, which is following the GCM framework. The latter is a nonce misuse-resistant one which is based on the framework of SIV variance, providing more robust applications for ZUC family stream ciphers.