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Jeffrey Walton 2018-12-13 11:57:52 -05:00
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commit 9156c49555
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donna_sse.cpp
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// donna_sse.cpp - written and placed in public domain by Jeffrey Walton // donna_sse.cpp - written and placed in public domain by Jeffrey Walton
// This is a port of Andrew Moon's public domain code. // This is an integration of Andrew Moon's public domain code.
// Also see curve25519-donna-sse2.h. // Also see curve25519-donna-sse2.h.
// This is a port of Andrew Moon's public domain code. The port was clean, // This is a integration of Andrew Moon's public domain code. The port was
// but it has one potential problem. The original code is C and relies upon // clean, but it has one potential problem. The original code is C and relies
// unions. Accessing the inactive union member is undefined behavior in C++. // upon unions. Accessing the inactive union member is undefined behavior in
// That means copying the array into packedelem8.u is OK; but then using // C++. That means copying the array into packedelem8.u is OK; but then using
// packedelem8.v in a calcualtion is undefined behavior. We will have to // packedelem8.v in a calcualtion is undefined behavior. We will have to
// keep an eye on things or rewrite significant portions of this code. // keep an eye on things or rewrite significant portions of this code.