The VHDL reference implementation along with optimized versions of the stream cipher Grain-128AEAD.

The top file is grain_top.vhd which includes all other components. The testbench is crypto_tb.vhd and is only used for simulations. When synthesizing the design, the only warning that should occur, for parallelization levels > 1, is that iControllerClk2 is not used. The signal is only used in the non-parallelized version.

See the .vhd files for comments on how to configure the design to your liking.

Developed by Mattias Sönnerup, Ripudaman Khattar and Jonathan Sönnerup