ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/scripts/sercomm-crypto.py b/scripts/sercomm-crypto.py
new file mode 100755
index 0000000..bed3e49
--- /dev/null
+++ b/scripts/sercomm-crypto.py
@@ -0,0 +1,86 @@
+#!/usr/bin/env python3
+
+import argparse
+import binascii
+import hashlib
+import os
+import struct
+
+def create_header(key, version, iv, random, size):
+ header = struct.pack('32s32s32s32s32s', key, version, iv, random, size)
+
+ return header
+
+def create_output(args):
+ in_st = os.stat(args.input_file)
+ in_size = in_st.st_size
+
+ key = "".encode('ascii')
+ version = args.version.encode('ascii')
+ iv = "".encode('ascii')
+ random = "".encode('ascii')
+ size = str(in_size).encode('ascii')
+ header = create_header(key, version, iv, random, size)
+
+ out_f = open(args.output_file, 'w+b')
+ out_f.write(header)
+ out_f.close()
+
+ md5 = hashlib.md5()
+ md5.update(header[0x60:0x80])
+ md5.update(header[0x20:0x40])
+ md5_1 = md5.digest()
+
+ md5 = hashlib.md5()
+ md5.update(header[0x80:0xA0])
+ md5.update(header[0x20:0x40])
+ md5_2 = md5.digest()
+
+ key = md5_1 + md5_2
+
+ key_f = open(args.key_file, 'w+b')
+ key_f.write(binascii.hexlify(bytearray(key)))
+ key_f.close()
+
+ print("AES 256 CBC Key:", binascii.hexlify(bytearray(key)))
+
+def main():
+ global args
+
+ parser = argparse.ArgumentParser(description='')
+
+ parser.add_argument('--input-file',
+ dest='input_file',
+ action='store',
+ type=str,
+ help='Input file')
+
+ parser.add_argument('--key-file',
+ dest='key_file',
+ action='store',
+ type=str,
+ help='AES 256 CBC Key File')
+
+ parser.add_argument('--output-file',
+ dest='output_file',
+ action='store',
+ type=str,
+ help='Output file')
+
+ parser.add_argument('--version',
+ dest='version',
+ action='store',
+ type=str,
+ help='Version')
+
+ args = parser.parse_args()
+
+ if ((not args.input_file) or
+ (not args.key_file) or
+ (not args.output_file) or
+ (not args.version)):
+ parser.print_help()
+
+ create_output(args)
+
+main()