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Update ecdh.c

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kokke
2017-12-05 14:41:18 +01:00
committed by GitHub
parent 41beef69ca
commit 3499d33614
1 changed files with 5 additions and 1 deletions
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ecdh.c
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@@ -58,7 +58,11 @@
#include <assert.h>
#endif
/* Use (some) constant-time operations? */
/* Use (some) constant-time operations?
NOTE: The library is _not_ capable of operating in constant-time and leaks information via timing.
Even if all operations are written const-time-style, it requires the hardware is able to multiply in constant time.
Multiplication on ARM Cortex-M processors takes a variable number of cycles depending on the operands...
*/
#ifndef CONST_TIME
#define CONST_TIME 0
#endif