The Performance section of the spec (https://github.com/BLAKE3-team/BLAKE3-specs... | Hacker News

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oconnor663 on Jan 9, 2020 | parent | context | favorite | on: The BLAKE3 cryptographic hash function

The Performance section of the spec (https://github.com/BLAKE3-team/BLAKE3-specs/blob/master/blak...) has a paragraph about short input performance. 64 bytes happens to be the BLAKE3 block size, and performance at that length or shorter is best in class. Look at the left edge of Figure 3 (https://i.imgur.com/smGHAKA.png).

nabla9 on Jan 9, 2020 | [–]

64 bytes happens to be the typical cache line size so it makes sense to use it as a block size.

garmaine on Jan 10, 2020 | [–]

What about padding?

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