On 07/11/12 00:56, Sašo Kiselkov wrote:
* SHA-512: simplest to implement (since the code is already in the
kernel) and provides a modest performance boost of around 60%.
FIPS 180-4 introduces SHA-512/t support and explicitly SHA-512/256.
http://csrc.nist.gov/publications/fips/fips180-4/fips-180-4.pdf
Note this is NOT a simple truncation of SHA-512 since when using
SHA-512/t the initial value H(0) is different.
See sections 5.3.6.2 and 6.7.
I recommend the checksum value for this be
checksum=sha512/256
A / in the value doesn't cause any problems and it is the official NIST
name of that hash.
With the internal enum being: ZIO_CHECKSUM_SHA512_256
CR 7020616 already exists for adding this in Oracle Solaris.
--
Darren J Moffat
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