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ChaCha related 64 bit oriented ARX cipher
Jan. 26, 2024, 8:48 a.m. |
IACR News www.iacr.org
ePrint Report: ChaCha related 64 bit oriented ARX cipher
Daniel Nager
A cipher scheme related to ChaCha with the variation of using 64 bit operations instead of 32 bits, and the same 512 bit state size, is presented. We will provide strong argumentation to assert that the same security of ChaCha can be obtained with half number of instructions for the same number of 20 rounds. Also, an strategy to implement this cipher on SIMD extensions is presented, with a …
bits can cipher daniel eprint report operations report security size state
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