Couhp · April 5, 2018 15:24 · Apr 5, 2018
diff --git a/gistfile1.txt b/gistfile1.txt
@@ -0,0 +1,95 @@
+# from mpi4py import MPI
+import hashlib
+import sys
+from sys import exit
+import time
+import math
+
+comm = MPI.COMM_WORLD
+rank = comm.Get_rank()
+size = comm.Get_size()
+name = MPI.Get_processor_name()
+maxLen = 5
+
+char_list = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z']
+index_temp = {}
+for i in range(len(char_list)) :
+    index_temp[char_list[i]] = i
+
+def split_code (node_size) :
+    my_suffle_list = set()
+    temp_char_list = char_list + ['']
+    for i in range(len(temp_char_list)) :
+        for j in range(len(temp_char_list)) :
+            my_suffle_list.add(temp_char_list[i] + temp_char_list[j])
+    my_suffle_list.remove('')
+    my_suffle_list = list(my_suffle_list)
+    working_list = []
+    for i in range(node_size) : 
+        working_list.append([])
+    for i in range(len(my_suffle_list)) :
+        working_list[i%node_size].append(my_suffle_list)
+
+    return char_list
+
+
+def next_code (current) : 
+    if current == '' : return char_list[0]  
+    for i in range(len(current)-1, -1, -1) :
+        s = current[i]
+        if s == char_list[-1] : continue
+        else :
+            result = current[:i] + char_list[index_temp[s]+1] + current[i+1:]
+            return result
+    return ''.join([char_list[0] for x in range(len(current)+1)])
+
+def check_sha(encr, code) :
+    hashStr = str(hashlib.sha256(code.encode('utf-8')).hexdigest())
+    if hasattr == encr :
+        message = {"found": True, "result": code}
+        comm.send(message, dest=0, tag=1)
+        return True
+    return False
+
+
+##-=====================
+if rank == 0:
+
+    encrypt = '36bbe50ed96841d10443bcb670d6554f0a34b761be67ec9c4a8ad2c0c44ca42c'
+    clear_text = 'abcde'
+    start_time = time.time()
+
+    init_list = split_code(size-1)
+
+    for i in range(1, size): 
+        message = {"encrypt": encrypt, "list": init_list[i-1]}
+        comm.send(message, dest=i, tag=0)
+
+    while True :
+        for j in range(1, size):
+            res = comm.recv(source=j, tag=1)
+            found = res.get('found')
+            if found :
+                decrypted = res.get("result")
+                print ("the result :" + decrypted)
+                for i in range(1,size):
+                    newMessage = {"shutdown": True}
+                    comm.send(newMessage, dest=i,tag=0)
+                exit()
+
+# Compute node
+else :
+    while True :
+        data = comm.recv(source=0, tag=0)
+        encr = data.get("encrypt")
+        my_list = data.get('list')
+        for code in my_list :
+            current = ''
+            while True :
+                current = next_code(current)
+                current_code = code + current
+                if (check_sha(encr, current_code)) :
+                    break
+
+
+
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