Mercurial > dropbear

diff dbutil.h @ 817:a625f9e135a4

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Constant time memcmp for the hmac and password crypt
author Matt Johnston <matt@ucc.asn.au>
date Thu, 03 Oct 2013 22:25:30 +0800
parents 504f33c684b5
children 4095b6d7c9fc
line wrap: on
line diff
--- a/dbutil.h	Sat Sep 21 00:34:36 2013 +0800
+++ b/dbutil.h	Thu Oct 03 22:25:30 2013 +0800
@@ -94,4 +94,7 @@
 /* Dropbear assertion */
 #define dropbear_assert(X) do { if (!(X)) { fail_assert(#X, __FILE__, __LINE__); } } while (0)
 
+/* Returns 0 if a and b have the same contents */
+int constant_time_memcmp(const void* a, const void *b, size_t n);
+
 #endif /* _DBUTIL_H_ */