New functions that emulate the device's hashing functions

src_features/signMessageEIP712/hash_wrap.h

@@ -0,0 +1,17 @@
+#ifndef HASH_WRAP_H_
+#define HASH_WRAP_H_
+
+#include <stdlib.h>
+#include "sha3.h"
+
+#define CX_LAST 1
+
+typedef sha3_context cx_sha3_t;
+typedef struct {} cx_hash_t;
+
+extern cx_sha3_t   global_sha3;
+
+int cx_keccak_init(cx_hash_t *hash, size_t size);
+int cx_hash(cx_hash_t *hash, int mode, const unsigned char *in,
+            unsigned int len, unsigned char *out, unsigned int out_len);
+#endif // HASH_WRAP_H_