DESfiddle下載 - DESfiddle源代碼下載

DESfiddle

Ai源碼

1.0.0

下載

Desfiddle

一種易於使用Python軟件包，用於實現和實驗著名的DES加密算法。它實現了經典（來自DES的教科書描述中的默認設置）和非古典DES。查看DES應用程序，以顯示使用包裝的雪崩效果和弱鍵的非常具體的實現。

動機

Python有很多DES軟件包，但它們都沒有提供如此高的靈活性來實現DES的非古典版本。該軟件包的目的是針對實施DES時可以調整的不同超級參數進行試驗。

特徵

迄今為止僅包裝實現DES的非經典版本。
許多超參數_^*調整 -
- 回合數
- 明文和鑰匙的半寬度
- 明文和鑰匙的錘距
- 置換框（初始，最終和逆）
- 換檔陣列
- S-boxes
- 擴展框
實施經典的DES就像將超參數留在其默認值的情況下一樣容易，其餘的將自動處理。
每個功能都有一個附加的詳細文檔字符串，因此最大程度地減少了導航到文檔的使用情況。因此，如果您很快想查看功能描述，只需在Python解釋器中輸入help(<function_name>)即可。

獎勵：此軟件包可以是IIT（BHU）教授的CSE 537-網絡安全課程的救生。

_{^{*調整其中一些可能需要更改當前版本的源代碼}}

安裝

在您的終端/命令提示中運行以下命令 -

 $ pip install DESfiddle

注意：如果您沒有安裝pip ，請按照以下步驟操作。

進口和用法

 # Importing
import DESfiddle.utils as dfu

# Usage
permutation_arr = dfu.generate_permutation(64)

 # Importing
from DESfiddle.utils import *
# or just specify the function name you wanna import

# Usage
permutation_arr = generate_permutation(64)

代碼示例

 from DESfiddle.utils import *

# Inputs in binary setting
plaintext = "0101010101010101010101010101010101010101010101010101010101010101"
key = "1111111111111111111111111111111100000000000000000000000000000000"

# Settings
nor = 16
halfwidth = 32
hamming_dist = 1

# Hamming the plaintext in binary mode
ref_pt_arr = preprocess_plaintext(plaintext, halfwidth)
pt_arr = preprocess_plaintext(plaintext, halfwidth, hamming_dist)
key = preprocess_key(key, halfwidth)
rkb,rkh = generate_round_keys(key,nor, halfwidth)
ref_ciphertext, ref_round_ciphertexts = encrypt(ref_pt_arr, rkb, nor, halfwidth)
_, round_ciphertexts = encrypt(pt_arr, rkb, nor, halfwidth)
diff = calc_diff(ref_round_ciphertexts, round_ciphertexts)

# Hamming the key in binary mode
pt_arr = preprocess_plaintext(plaintext, halfwidth)
ref_key = preprocess_key(key,halfwidth)
key = preprocess_key(key, halfwidth, hamming_dist)
ref_rkb, ref_rkh = generate_round_keys(ref_key, nor, halfwidth)
rkb,_ = generate_round_keys(key, nor, halfwidth)
ref_ciphertext, ref_round_ciphertexts = encrypt(pt_arr, ref_rkb, nor, halfwidth)
_, round_ciphertexts = encrypt(pt_arr, rkb, nor, halfwidth)
diff = calc_diff(ref_round_ciphertexts, round_ciphertexts)

 from DESfiddle.utils import *

# Inputs in ASCII setting
plaintext = "This is so cool"
key = "Yesss"

# Settings
nor = 16
halfwidth = 32
hamming_dist = 1

# Preprocessing when input in ASCII
plaintext = txt_to_hex(plaintext)
plaintext = hex_to_bin(plaintext)
key = txt_to_hex(key)
key = hex_to_bin(key)

# Hamming the plaintext in binary mode
ref_pt_arr = preprocess_plaintext(plaintext, halfwidth)
pt_arr = preprocess_plaintext(plaintext, halfwidth, hamming_dist)
key = preprocess_key(key, halfwidth)
rkb,rkh = generate_round_keys(key,nor, halfwidth)
ref_ciphertext, ref_round_ciphertexts = encrypt(ref_pt_arr, rkb, nor, halfwidth)
_, round_ciphertexts = encrypt(pt_arr, rkb, nor, halfwidth)
diff = calc_diff(ref_round_ciphertexts, round_ciphertexts)

# Hamming the key in binary mode
pt_arr = preprocess_plaintext(plaintext, halfwidth)
ref_key = preprocess_key(key,halfwidth)
key = preprocess_key(key, halfwidth, hamming_dist)
ref_rkb, ref_rkh = generate_round_keys(ref_key, nor, halfwidth)
rkb,_ = generate_round_keys(key, nor, halfwidth)
ref_ciphertext, ref_round_ciphertexts = encrypt(pt_arr, ref_rkb, nor, halfwidth)
_, round_ciphertexts = encrypt(pt_arr, rkb, nor, halfwidth)
diff = calc_diff(ref_round_ciphertexts, round_ciphertexts)