solved 26

Author: JavaProgrammerLB

26.py

@@ -3,11 +3,43 @@
 
 def main():
     file_path = "maze/maze/mybroken.zip"
-    first_step(file_path)
+    result_file_path = "maze/maze/my.zip"
+    email_md5 = "bbb8b499a0eef99b52c7f13f4e78c24b"
+    # first_step(file_path)
+    second_step(email_md5, file_path, result_file_path)
 
 
 def first_step(file_path):
     file = open(file_path, "rb")
+    get_bytes_md5(file.read())
+
+
+def second_step(target, file_path, result_file_path):
+    file = open(file_path, "rb")
+    bs = file.read()
+    finished = False
+    for i in range(len(bs)):
+        for j in range(256):
+            bs_head = bs[: i]
+            bs_center = chr(j).encode("latin1")
+            bs_tail = bs[i + 1:]
+            new_bs = bs_head + bs_center + bs_tail
+            now = get_bytes_md5(new_bs)
+            if now == target:
+                result_file = open(result_file_path, "wb")
+                result_file.write(bs)
+                print("Done! result={}".format(result_file_path))
+                finished = True
+                break
+        if finished:
+            break
+
+
+def get_bytes_md5(hex_string):
+    mymd5 = hashlib.md5()
+    mymd5.update(hex_string)
+    hexdigest = mymd5.hexdigest()
+    return hexdigest
 
 
 if __name__ == "__main__":

README.md

@@ -1,6 +1,16 @@
 # pythonchallenge
 Solve Problems in http://www.pythonchallenge.com
 
+#### 26
+result: http://www.pythonchallenge.com/pc/hex/speedboat.html
+```python
+import hashlib
+```
+- we get mybroken.zip in level 24
+- the decent means leopold mozart
+- we have sent an email to leopold mozart in level 19
+- fix the broken zip file to match the md5
+
 
 #### 25
 result: http://www.pythonchallenge.com/pc/hex/decent.html

maze/maze/my.zip

@@ -18,4 +18,5 @@ def read_bin_file(file_path):
     # read_bin_file("indian/indian.wav")
     # read_bin_file("indian/result.wav")
     # read_bin_file("maze/maze/mybroken.gif")
-    read_bin_file("lake/lake1.jpg")
+    # read_bin_file("lake/lake1.jpg")
+    read_bin_file("maze/maze/mybroken.zip")