Caesar Alg
Brightcells
2 zmienionych plików z 32 dodań i 5 usunięć
+ 10
- 5
api/encrypt_views.py
@@ -2,7 +2,6 @@ |
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| 2 | 2 |
|
| 3 | 3 |
from __future__ import division |
| 4 | 4 |
|
| 5 |
-import json |
|
| 6 | 5 |
import random |
| 7 | 6 |
|
| 8 | 7 |
from django_response import response |
@@ -10,13 +9,15 @@ from logit import logit |
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| 10 | 9 |
|
| 11 | 10 |
from mch.models import BrandInfo, ModelImageInfo, ModelInfo |
| 12 | 11 |
from utils.algorithm.b64 import b64_decrypt, b64_encrypt |
| 12 |
+from utils.algorithm.caesar import caesar_decrypt, caesar_encrypt |
|
| 13 | 13 |
from utils.algorithm.rsalg import rsa_decrypt, rsa_encrypt |
| 14 | 14 |
|
| 15 | 15 |
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| 16 |
-# CIPHER_ALGORITHM = ('B64', 'RSA')
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| 17 |
-CIPHER_ALGORITHM = ('B64', )
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| 16 |
+# CIPHER_ALGORITHM = ('CAESAR', 'B64', 'RSA')
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| 17 |
+CIPHER_ALGORITHM = ('CAESAR', 'B64')
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|
| 18 | 18 |
|
| 19 | 19 |
CIPHER_PREFIX = {
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| 20 |
+ 'CAESAR': '0', |
|
| 20 | 21 |
'B64': '1', |
| 21 | 22 |
'RSA': '2', |
| 22 | 23 |
} |
@@ -28,7 +29,9 @@ def encrypt(request): |
||
| 28 | 29 |
|
| 29 | 30 |
alg = random.choice(CIPHER_ALGORITHM) |
| 30 | 31 |
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| 31 |
- if alg == 'B64': |
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| 32 |
+ if alg == 'CAESAR': |
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| 33 |
+ ciphertext = caesar_encrypt(plaintext) |
|
| 34 |
+ elif alg == 'B64': |
|
| 32 | 35 |
ciphertext = b64_encrypt(plaintext) |
| 33 | 36 |
elif alg == 'RSA': |
| 34 | 37 |
ciphertext = rsa_encrypt(plaintext) |
@@ -46,7 +49,9 @@ def decrypt(request): |
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| 46 | 49 |
|
| 47 | 50 |
alg, ciphertext = ciphertext.split('+', 1)
|
| 48 | 51 |
|
| 49 |
- if alg == CIPHER_PREFIX['B64']: |
|
| 52 |
+ if alg == CIPHER_PREFIX['CAESAR']: |
|
| 53 |
+ plaintext = caesar_decrypt(ciphertext) |
|
| 54 |
+ elif alg == CIPHER_PREFIX['B64']: |
|
| 50 | 55 |
plaintext = b64_decrypt(ciphertext) |
| 51 | 56 |
elif alg == CIPHER_PREFIX['RSA']: |
| 52 | 57 |
plaintext = rsa_decrypt(ciphertext) |
+ 22
- 0
utils/algorithm/caesar.py
@@ -0,0 +1,22 @@ |
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| 1 |
+# -*- coding: utf-8 -*- |
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| 2 |
+ |
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| 3 |
+import random |
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| 4 |
+import string |
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| 5 |
+ |
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| 6 |
+ |
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| 7 |
+fromstr = '0123456789#' |
|
| 8 |
+tostr = 'RKxyjwzcs6U' |
|
| 9 |
+ |
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| 10 |
+ |
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| 11 |
+def generate_tostr(n): |
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| 12 |
+ fromstrlist = list(string.letters + string.digits) |
|
| 13 |
+ random.shuffle(fromstrlist) |
|
| 14 |
+ return ''.join(fromstrlist)[:n] |
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| 15 |
+ |
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| 16 |
+ |
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+def caesar_encrypt(plaintext): |
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| 18 |
+ return str(plaintext).translate(string.maketrans(fromstr, tostr)) |
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| 19 |
+ |
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| 20 |
+ |
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| 21 |
+def caesar_decrypt(ciphertext): |
|
| 22 |
+ return str(ciphertext).translate(string.maketrans(tostr, fromstr)) |