[Cryptech-Commits] [test/novena_trng] 01/01: Adding a simple script to extract binary data from response data.

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joachim at secworks.se pushed a commit to branch master
in repository test/novena_trng.

commit 40228041877c373a9f8f8d33068534cade212311
Author: Joachim Strömbergson <joachim at secworks.se>
Date:   Mon Dec 8 21:39:31 2014 +0100

    Adding a simple script to extract binary data from response data.
---
 src/sw/binextract.py | 98 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 98 insertions(+)

diff --git a/src/sw/binextract.py b/src/sw/binextract.py
new file mode 100755
index 0000000..5cac2e8
--- /dev/null
+++ b/src/sw/binextract.py
@@ -0,0 +1,98 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+#=======================================================================
+#
+# binextract.py
+# -------------
+# Reads file with read data word logs and extracts the binary data.
+# Redirect std out to target file.
+#
+#
+# Author: Joachim Strömbergson
+# Copyright (c) 2014, Secworks Sweden AB
+#
+# Redistribution and use in source and binary forms, with or
+# without modification, are permitted provided that the following
+# conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+#=======================================================================
+
+#-------------------------------------------------------------------
+# Python module imports.
+#-------------------------------------------------------------------
+import sys
+import os
+
+
+#-------------------------------------------------------------------
+# Defines.
+#-------------------------------------------------------------------
+# Verbose operation on/off
+VERBOSE = False
+NUM_BYTES = 4
+
+
+#-------------------------------------------------------------------
+# main()
+#
+# Parse any arguments and run the tests.
+#-------------------------------------------------------------------
+def main():
+    file_name = sys.argv[1]
+
+    with open(file_name, 'r') as my_file:
+        for line in my_file:
+            my_bytes = []
+
+#            print(line[23 : 25], line[26 : 28], line[29 : 31], line[32 : 34])
+
+            my_bytes.append(int(line[23 : 25], 16))
+            my_bytes.append(int(line[26 : 28], 16))
+            my_bytes.append(int(line[29 : 31], 16))
+            my_bytes.append(int(line[32 : 34], 16))
+
+            if VERBOSE:
+                print("Bytes extracted: ", end='')
+                for my_byte in my_bytes:
+                    print('0x%02x' % my_byte, end=' ')
+                print("")
+
+            else:
+                for my_byte in my_bytes:
+                    os.write(1, bytes(chr(my_byte), 'latin_1'))
+
+
+#-------------------------------------------------------------------
+# __name__
+# Python thingy which allows the file to be run standalone as
+# well as parsed from within a Python interpreter.
+#-------------------------------------------------------------------
+if __name__=="__main__":
+    # Run the main function.
+    sys.exit(main())
+
+
+#=======================================================================
+# EOF binextract.py
+#=======================================================================