Merge Starkware branch

src/stark_crypto.h

@@ -0,0 +1,25 @@
+#ifndef __STARK_CRYPTO_H__
+#define __STARK_CRYPTO_H__
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <string.h>
+
+#include "os.h"
+#include "cx.h"
+
+
+/* EC points */
+#define FIELD_ELEMENT_SIZE (32)
+#define EC_POINT_SIZE (2 * FIELD_ELEMENT_SIZE + 1)
+typedef unsigned char FieldElement[FIELD_ELEMENT_SIZE];
+typedef unsigned char ECPoint[EC_POINT_SIZE];
+
+void pedersen(FieldElement res, /* out */
+              FieldElement a, FieldElement b);
+
+int stark_sign(uint8_t *signautre, /* out */
+               uint8_t *privateKeyData, FieldElement token1,
+               FieldElement token2, FieldElement msg);
+
+#endif