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-rw-r--r--verify.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/verify.c b/verify.c
new file mode 100644
index 00000000..943e606b
--- /dev/null
+++ b/verify.c
@@ -0,0 +1,44 @@
+/* $OpenBSD: */
+
+/* Public Domain, from supercop-20130419/crypto_verify/32/ref/verify.c */
+
+#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;
+}