Added ref10 shen_ed25519_ref code, which includes code that can replace crypto-ops with a version straight from Bernstein's ref 10

1 files changed, 40 insertions, 0 deletions

diff --git a/src/crypto/shen_ed25519_ref/verify.c b/src/crypto/shen_ed25519_ref/verify.c
new file mode 100755
index 000000000..a04186b60
--- /dev/null
+++ b/src/crypto/shen_ed25519_ref/verify.c
@@ -0,0 +1,40 @@
+#include "crypto_verify_32.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;
+}