completed test exc

period_1/04-blockchain_class/403_T03_A03_Hash_File_Comparison/FileComparison_a_t.py

@@ -18,7 +18,7 @@ To test run 'FileComparison.py' in your command line
 Notes:
     * do not change class structure or method signature to not break unit tests
     * visit this url for more information on this topic:
-    https://home.cs.colorado.edu/~jrblack/papers/cbh.html
+    https://home.cs.colorado.edu/~jrblack1/papers/cbh.html
 """
 from cryptography.hazmat.primitives import hashes
 from os import listdir
@@ -33,7 +33,11 @@ with  open(path + '/original.png', 'rb') as original_file:
 # TODO 1: Find the hash of the original file
 # use SHA256() hash function
 
-original_hash = None  # you need to modify this
+# original_hash = 
+# has original file
+original_hash = hashes.Hash(hashes.SHA256())
+original_hash.update(content)
+original_hash = original_hash.finalize()
 
 
 file_list = [f for f in listdir(path + '/received/') if isfile(join(path + '/received/', f))]
@@ -47,8 +51,9 @@ for f in file_list:
     with  open(path + '/received/' + f, 'rb') as copy_file:
         content = copy_file.read()
     
-    hash = f # you need to modify this
-
+    hash = hashes.Hash(hashes.SHA256())
+    hash.update(content)
+    hash = hash.finalize()
     if hash == original_hash:
         print(f, 'is original!')
     else: