HMAC-SHA256 でIPアドレスを仮名化

In [12]:

    

import hmac
import hashlib
import Crypto.Cipher.AES
import socket
import struct
from array import array
import ipaddress
import numpy as np

key = "secret"
text = "192.168.0."
signature = hmac.new(key,text,hashlib.sha256).hexdigest()
print signature
text = "192.168.0."
signature = hmac.new(key,text,hashlib.sha256).hexdigest()
print signature
key = "secret2"
text = "192.168.0."
signature = hmac.new(key,text,hashlib.sha256).hexdigest()
print signature


    

    




67fc5539637305c38e3256cfa11ca196a22f3c02fba6016018a2da45d0b90765
67fc5539637305c38e3256cfa11ca196a22f3c02fba6016018a2da45d0b90765
d4877bfec686040daf976a0846afccc0deffef9cb9b7f5e4d771f49833d61853

In [34]:

    

ip=ipaddress.ip_address(u"255.255.255.255")


    

In [35]:

    

ip


    

    
Out[35]:





IPv4Address(u'255.255.255.255')

In [36]:

    

addr = int(ip)


    

In [37]:

    

addr


    

    
Out[37]:





4294967295

In [38]:

    

print "addr:\n",format(addr,'032b')


    

    




addr:
11111111111111111111111111111111

In [39]:

    

net = addr >> 8 << 8
print "addr:\n",format(net,'032b')


    

    




addr:
11111111111111111111111100000000

In [40]:

    

ipaddress.IPv4Address(net)


    

    
Out[40]:





IPv4Address(u'255.255.255.0')

In [66]:

    

host = addr & (2**8-1) 
print "addr:\n",format(host,'032b')


    

    




addr:
00000000000000000000000011111111

In [67]:

    

ipaddress.IPv4Address(host)


    

    
Out[67]:





IPv4Address(u'0.0.0.255')

In [68]:

    




    

    
Out[68]:





'1111111111111111111111111111111100000000'

In [72]:

    

2**8


    

    
Out[72]:





256

In [73]:

    

ip=ipaddress.ip_address(u"192.168.0.1")


    

In [74]:

    

addr = int(ip)


    

In [101]:

    

key = "secret"
ip=ipaddress.ip_address(u"192.168.0.0")
print ip.exploded
signature = hmac.new(key,ip.exploded,hashlib.sha256).hexdigest()
print signature


    

    




192.168.0.0
a8d0041786413438397fad8ca9ac76b953a3d69eae02c71f80260c1a504b1f7f

In [104]:

    

key = "secret"
ip=ipaddress.ip_address(u"192.168.1.0")
print ip.exploded
signature = hmac.new(key,ip.exploded,hashlib.sha256).hexdigest()
print signature


    

    




192.168.1.0
8c3846806237fb162152c5aa3a6f33402a887c8aaddcb429e7e7035b6c2e4ef0

In [ ]:

    




    

In [99]:

    




    

    
Out[99]:





u'2001:0db8:0000:0000:0000:0000:0000:0000'

In [102]:

    

ip=ipaddress.ip_address(u"2001:db8::0")
print ip.exploded
signature = hmac.new(key,ip.exploded,hashlib.sha256).hexdigest()
print signature


    

    




2001:0db8:0000:0000:0000:0000:0000:0000
b57bc65d1bfb665858bdf45ee0ebc984115c63734223be206e35d53781a91694

In [ ]:

    




    

In [106]:

    

ip=ipaddress.ip_address(u"2001:DB8:0:0:8:800:200C:0")
print ip.exploded
signature = hmac.new(key,ip.exploded,hashlib.sha256).hexdigest()
print signature


    

    




2001:0db8:0000:0000:0008:0800:200c:0000
6e7f8162892efa041d94188f4ad19a1e9968535d735133ef17cd01e60db832ac

In [107]:

    

ip=ipaddress.ip_address(u"2001:DB8:0:0:8:800:200C:0")
print ip.exploded
signature = hmac.new(key,ip.exploded,hashlib.sha256).hexdigest()
print signature


    

    




2001:0db8:0000:0000:0008:0800:200c:0000
6e7f8162892efa041d94188f4ad19a1e9968535d735133ef17cd01e60db832ac

In [ ]: