[fsbl] add fsbl for cv181x/cv180x

Change-Id: I6809bc5016d4bc148f62be2ed3f8e928ec111f19

fsbl/lib/BigDigits/bigdigitsRand.h

@@ -0,0 +1,56 @@
+/* $Id: bigdigitsRand.h $ */
+
+/** @file
+    Interface for BigDigits "mp" random number functions using a "pretty-good" internal RNG
+*/
+
+/***** BEGIN LICENSE BLOCK *****
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * Copyright (c) 2001-16 David Ireland, D.I. Management Services Pty Limited
+ * <http://www.di-mgt.com.au/bigdigits.html>. All rights reserved.
+ *
+ ***** END LICENSE BLOCK *****/
+/*
+ * Last updated:
+ * $Date: 2016-03-31 09:51:00 $
+ * $Revision: 2.6.1 $
+ * $Author: dai $
+ */
+
+/*	[v2.2] changed name from spRandom to bigdigitsRand */
+
+#ifndef BIGDIGITSRAND_H_
+#define BIGDIGITSRAND_H_ 1
+
+#include "bigdigits.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**	Returns a "better" pseudo-random digit using internal RNG. */
+DIGIT_T spBetterRand(void);
+
+/** Generate a random mp number of bit length at most \c nbits using internal RNG 
+@param[out] a to receive generated random number
+@param[in]  ndigits number of digits in a
+@param[in]  nbits maximum number of bits
+@returns Number of digits actually set 
+*/
+size_t mpRandomBits(DIGIT_T a[], size_t ndigits, size_t nbits);
+
+/* Added in [v2.4] */
+/** Generate array of random octets (bytes) using internal RNG
+ *  @remarks This function is in the correct form for BD_RANDFUNC to use in bdRandomSeeded(). 
+  * \c seed is ignored. */
+int mpRandomOctets(unsigned char *bytes, size_t nbytes, const unsigned char *seed, size_t seedlen);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BIGDIGITSRAND_H_ */