First version of Threefish512-CTR with BLAKE3-MAC & a custom shamirs secret sharing port alongside C bridges with test vectors & Compilation instructions

crypto/shamirs_secret_sharing/include/fileutils.h

@@ -0,0 +1,26 @@
+#ifndef Py_FILEUTILS_H
+#define Py_FILEUTILS_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x03050000
+PyAPI_FUNC(wchar_t *) Py_DecodeLocale(
+    const char *arg,
+    size_t *size);
+
+PyAPI_FUNC(char*) Py_EncodeLocale(
+    const wchar_t *text,
+    size_t *error_pos);
+#endif
+
+#ifndef Py_LIMITED_API
+#  define Py_CPYTHON_FILEUTILS_H
+#  include "cpython/fileutils.h"
+#  undef Py_CPYTHON_FILEUTILS_H
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_FILEUTILS_H */