Added initial fuzzy hashing code.

src/binwalk/fuzzyhash.py

+import ctypes
+import ctypes.util
+from binwalk.compat import *
+
+class FuzzyHash(object):
+
+	# Requires libfuzzy.so
+	LIBRARY_NAME = "fuzzy"
+
+	# Max result is 148 (http://ssdeep.sourceforge.net/api/html/fuzzy_8h.html)
+	FUZZY_MAX_RESULT = 150
+
+	def __init__(self):
+		self.lib = ctypes.cdll.LoadLibrary(ctypes.util.find_library(self.LIBRARY_NAME))
+
+	def compare_files(self, file1, file2):
+		hash1 = ctypes.create_string_buffer(self.FUZZY_MAX_RESULT)
+		hash2 = ctypes.create_string_buffer(self.FUZZY_MAX_RESULT)
+
+		if self.lib.fuzzy_hash_filename(str2bytes(file1), hash1) == 0 and self.lib.fuzzy_hash_filename(str2bytes(file2), hash2) == 0:
+			return self.lib.fuzzy_compare(hash1, hash2)
+
+		return None
+
+
+if __name__ == '__main__':
+	import sys
+	
+	print (FuzzyHash().compare_files(sys.argv[1], sys.argv[2]))