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Date: Sat, 10 Aug 2013 19:59:08 -0400
From: Daniel Franke <>
Subject: RE: [PHC] C99 in reference implementations

On Aug 10, 2013 7:18 PM, "Dennis E. Hamilton" <>

> My recommendation would be to use Clean C (C Language that is C++
compatible) and also limit the solution to the free-standing subset of C.
 That means the most standard headers to use are any of float.h, iso646.h,
limits.h, stdarg.h, stdbool.h, stddef.h, and stdint.h, so long Clean C is
also achieved.  (I suspect that rules out stdbool.h.)

Adherence to this discipline rules out all means of dynamic memory
allocation other than by user-supplied callbacks. Since the PHS() prototype
doesn't have any such callbacks in it, this would preclude implementation
of any hash algorithm with configurable memory-hardness.

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