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A comment on Kangaroo Twelve Implementation in Go. Parent comment

Re:Kangaroo Twelve Implementation in Go by tptacek on Sunday June 11, 2017 @02:13PM (#14533025)
This only matters if there's an existing protocol that uses truncated SHA-2 you need to interoperate with (and your premise is there is not).

There is no functional advantage to having a different IV for SHA-2 5-2/256.

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Re:Kangaroo Twelve Implementation in Go by baby on Sunday June 11, 2017 @02:51PM (#14533182)
Yup, this looks like it's a cross-domain protection.
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Re:Kangaroo Twelve Implementation in Go by tptacek on Sunday June 11, 2017 @03:02PM (#14533224)
Sure, but if you care about domain separation, you can't rely on the IV anyways.
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