256-bit ECC on the other hand is frequently performed by 4-wide 64-bit operations with a little extra accounting.
and the more recent (post-quantum) lattice-based stuff can get away with ~16 bit arithmetic (it's vectors of ~512-1024 dimension, but the operations are SIMD-friendly)
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and the more recent (post-quantum) lattice-based stuff can get away with ~16 bit arithmetic (it's vectors of ~512-1024 dimension, but the operations are SIMD-friendly)