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, 14 insertions, 0 deletions

diff --git a/src/crypto/shen_ed25519_ref/ref10/ge_tobytes.c b/src/crypto/shen_ed25519_ref/ref10/ge_tobytes.c
new file mode 100644
index 000000000..31b3d33e0
--- /dev/null
+++ b/src/crypto/shen_ed25519_ref/ref10/ge_tobytes.c
@@ -0,0 +1,14 @@
+#include "ge.h"
+
+void ge_tobytes(unsigned char *s,const ge_p2 *h)
+{
+  fe recip;
+  fe x;
+  fe y;
+
+  fe_invert(recip,h->Z);
+  fe_mul(x,h->X,recip);
+  fe_mul(y,h->Y,recip);
+  fe_tobytes(s,y);
+  s[31] ^= fe_isnegative(x) << 7;
+}