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AES-GCM(Advanced Encryption Standard with Galois Counter Mode) is an encryption authentication algorithm, which includes two main components: an AES engine and Ghash module. Because of the computation feedback in Ghash operation, the Ghash module limits the performance of the whole AES-GCM system. In this study, an efficient architecture of Ghash is presented. The architecture uses an optimized bit-parallel...
GMAC (Galois Message Authentication Code) is a special case of authenticated encryption mode GCM (Galois/Counter Mode) when it acts as a stand-alone MAC. As the hash function of GMAC, Ghash is based on the GF(2128) multiplier. It is the algebraic properties of Ghash that support incremental authentication of GMAC. In this paper, an efficient hardware implementation on Xilinx Virtex 5 FPGA platform,...
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