256-bit ECC on the other hand is frequently performed by 4-wide 64-bit operation... | Hacker News

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		stouset 3 days ago \| parent \| context \| favorite \| on: RSA-260 Factorized 256-bit ECC on the other hand is frequently performed by 4-wide 64-bit operations with a little extra accounting.
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mswphd 3 days ago [–]

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)

monster_truck 3 days ago | [–]

Can get all the way down to 4 with a little CRT/RNS if you're trying to go even faster

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