1 files changed, 49 insertions, 0 deletions

diff --git a/verify.c b/verify.c
new file mode 100644
index 000000000..1671a4132
--- /dev/null
+++ b/verify.c
@@ -0,0 +1,49 @@
+/* $OpenBSD: verify.c,v 1.3 2013/12/09 11:03:45 markus Exp $ */
+
+/*
+ * Public Domain, Author: Daniel J. Bernstein
+ * Copied from nacl-20110221/crypto_verify/32/ref/verify.c
+ */
+
+#include "includes.h"
+
+#include "crypto_api.h"
+
+int crypto_verify_32(const unsigned char *x,const unsigned char *y)
+{
+  unsigned int differentbits = 0;
+#define F(i) differentbits |= x[i] ^ y[i];
+  F(0)
+  F(1)
+  F(2)
+  F(3)
+  F(4)
+  F(5)
+  F(6)
+  F(7)
+  F(8)
+  F(9)
+  F(10)
+  F(11)
+  F(12)
+  F(13)
+  F(14)
+  F(15)
+  F(16)
+  F(17)
+  F(18)
+  F(19)
+  F(20)
+  F(21)
+  F(22)
+  F(23)
+  F(24)
+  F(25)
+  F(26)
+  F(27)
+  F(28)
+  F(29)
+  F(30)
+  F(31)
+  return (1 & ((differentbits - 1) >> 8)) - 1;
+}