undefined | Better HN

0 pointskoolba9y ago0 comments

Using a truncated SHA-512/256 also has the advantage of being considerably faster than SHA-256 on 64-bit CPUs. The performance difference is close to 50%. As such, I see no reason to use SHA-256 for anything[1], you're better off just using SHA-512/256 as the net storage is the same as well (32-bytes).

[1]: Assuming you're running on a 64-bit platform...

0 comments

3 comments · 1 top-level

kobeya9y ago· 2 in thread

For hashing large data, yes. For password derivation schemes or hash trees, no. SHA512 is only faster per byte because the block size is larger. SHA256 has faster rounds.

koolbaOP9y ago

If you're using SHA-anything for hashing passwords you're doing it wrong.

kobeya9y ago

Industry standards like PBKDF2 use hash functions like SHA internally.

j / k navigate · click thread line to collapse