From bf0831b3e877ec53f223b73c1de5f6028f24a885 Mon Sep 17 00:00:00 2001
From: Sophia Papagiannaki <papagiannaki@stettbacher.ch>
Date: Tue, 19 May 2020 18:30:53 +0200
Subject: Version 2.1.0

Implemented firmware update.
---
 md5_helper.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 md5_helper.c

(limited to 'md5_helper.c')

diff --git a/md5_helper.c b/md5_helper.c
new file mode 100644
index 0000000..895ea3c
--- /dev/null
+++ b/md5_helper.c
@@ -0,0 +1,54 @@
+/**
+* @file			md5_helper.c
+* @brief		MD5 checksum generation.
+* @author		Patrick Roth - roth@stettbacher.ch
+* @date			2010-04-30
+* @copyright	2010 Stettbacher Signal Processing AG
+* 
+* @remarks
+*
+* <PRE>
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License as published by the Free Software Foundation; either
+* version 2.1 of the License, or (at your option) any later version.
+*
+* This library is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+* Lesser General Public License for more details.
+*
+* You should have received a copy of the GNU Lesser General Public
+* License along with this library; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+* </PRE>
+*
+*/
+
+#include <stdio.h>
+
+#include "md5.h"
+
+
+/**
+ * Generate the MD5 checksum.
+ * 
+ * @param	addr: 		A pointer to the start address.
+ * @param	size:		The size to compare.
+ * @param	buf: 		Destination buffer; must provide room for 32+1 chars!
+ * @return	A pointer to the first digit of the generated MD5 checksum. The
+ *          checksum's length is always 16 bytes.
+ */
+void getMd5ChecksumString(void *addr, ssize_t size, char *buf)
+{
+	MD5_CTX md5;
+	
+	MD5Init(&md5);
+	MD5Update(&md5, (unsigned char*)(addr), (unsigned int)size);
+	MD5Final(&md5);
+
+	for(int i = 0; i < 16; i++) {
+		sprintf(buf+i*2, "%02x", md5.digest[i]);
+	}
+    *(buf+32) = '\0';
+}
-- 
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